2 #include <linux/ceph/ceph_debug.h>
4 #include <linux/module.h>
6 #include <linux/highmem.h>
8 #include <linux/pagemap.h>
9 #include <linux/slab.h>
10 #include <linux/uaccess.h>
12 #include <linux/bio.h>
15 #include <linux/ceph/libceph.h>
16 #include <linux/ceph/osd_client.h>
17 #include <linux/ceph/messenger.h>
18 #include <linux/ceph/decode.h>
19 #include <linux/ceph/auth.h>
20 #include <linux/ceph/pagelist.h>
22 #define OSD_OPREPLY_FRONT_LEN 512
24 static struct kmem_cache
*ceph_osd_request_cache
;
26 static const struct ceph_connection_operations osd_con_ops
;
29 * Implement client access to distributed object storage cluster.
31 * All data objects are stored within a cluster/cloud of OSDs, or
32 * "object storage devices." (Note that Ceph OSDs have _nothing_ to
33 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
34 * remote daemons serving up and coordinating consistent and safe
37 * Cluster membership and the mapping of data objects onto storage devices
38 * are described by the osd map.
40 * We keep track of pending OSD requests (read, write), resubmit
41 * requests to different OSDs when the cluster topology/data layout
42 * change, or retry the affected requests when the communications
43 * channel with an OSD is reset.
46 static void link_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
);
47 static void unlink_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
);
48 static void link_linger(struct ceph_osd
*osd
,
49 struct ceph_osd_linger_request
*lreq
);
50 static void unlink_linger(struct ceph_osd
*osd
,
51 struct ceph_osd_linger_request
*lreq
);
54 static inline bool rwsem_is_wrlocked(struct rw_semaphore
*sem
)
58 if (unlikely(down_read_trylock(sem
))) {
65 static inline void verify_osdc_locked(struct ceph_osd_client
*osdc
)
67 WARN_ON(!rwsem_is_locked(&osdc
->lock
));
69 static inline void verify_osdc_wrlocked(struct ceph_osd_client
*osdc
)
71 WARN_ON(!rwsem_is_wrlocked(&osdc
->lock
));
73 static inline void verify_osd_locked(struct ceph_osd
*osd
)
75 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
77 WARN_ON(!(mutex_is_locked(&osd
->lock
) &&
78 rwsem_is_locked(&osdc
->lock
)) &&
79 !rwsem_is_wrlocked(&osdc
->lock
));
81 static inline void verify_lreq_locked(struct ceph_osd_linger_request
*lreq
)
83 WARN_ON(!mutex_is_locked(&lreq
->lock
));
86 static inline void verify_osdc_locked(struct ceph_osd_client
*osdc
) { }
87 static inline void verify_osdc_wrlocked(struct ceph_osd_client
*osdc
) { }
88 static inline void verify_osd_locked(struct ceph_osd
*osd
) { }
89 static inline void verify_lreq_locked(struct ceph_osd_linger_request
*lreq
) { }
93 * calculate the mapping of a file extent onto an object, and fill out the
94 * request accordingly. shorten extent as necessary if it crosses an
97 * fill osd op in request message.
99 static int calc_layout(struct ceph_file_layout
*layout
, u64 off
, u64
*plen
,
100 u64
*objnum
, u64
*objoff
, u64
*objlen
)
102 u64 orig_len
= *plen
;
106 r
= ceph_calc_file_object_mapping(layout
, off
, orig_len
, objnum
,
110 if (*objlen
< orig_len
) {
112 dout(" skipping last %llu, final file extent %llu~%llu\n",
113 orig_len
- *plen
, off
, *plen
);
116 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum
, *objoff
, *objlen
);
121 static void ceph_osd_data_init(struct ceph_osd_data
*osd_data
)
123 memset(osd_data
, 0, sizeof (*osd_data
));
124 osd_data
->type
= CEPH_OSD_DATA_TYPE_NONE
;
127 static void ceph_osd_data_pages_init(struct ceph_osd_data
*osd_data
,
128 struct page
**pages
, u64 length
, u32 alignment
,
129 bool pages_from_pool
, bool own_pages
)
131 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGES
;
132 osd_data
->pages
= pages
;
133 osd_data
->length
= length
;
134 osd_data
->alignment
= alignment
;
135 osd_data
->pages_from_pool
= pages_from_pool
;
136 osd_data
->own_pages
= own_pages
;
139 static void ceph_osd_data_pagelist_init(struct ceph_osd_data
*osd_data
,
140 struct ceph_pagelist
*pagelist
)
142 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGELIST
;
143 osd_data
->pagelist
= pagelist
;
147 static void ceph_osd_data_bio_init(struct ceph_osd_data
*osd_data
,
148 struct bio
*bio
, size_t bio_length
)
150 osd_data
->type
= CEPH_OSD_DATA_TYPE_BIO
;
152 osd_data
->bio_length
= bio_length
;
154 #endif /* CONFIG_BLOCK */
156 #define osd_req_op_data(oreq, whch, typ, fld) \
158 struct ceph_osd_request *__oreq = (oreq); \
159 unsigned int __whch = (whch); \
160 BUG_ON(__whch >= __oreq->r_num_ops); \
161 &__oreq->r_ops[__whch].typ.fld; \
164 static struct ceph_osd_data
*
165 osd_req_op_raw_data_in(struct ceph_osd_request
*osd_req
, unsigned int which
)
167 BUG_ON(which
>= osd_req
->r_num_ops
);
169 return &osd_req
->r_ops
[which
].raw_data_in
;
172 struct ceph_osd_data
*
173 osd_req_op_extent_osd_data(struct ceph_osd_request
*osd_req
,
176 return osd_req_op_data(osd_req
, which
, extent
, osd_data
);
178 EXPORT_SYMBOL(osd_req_op_extent_osd_data
);
180 void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*osd_req
,
181 unsigned int which
, struct page
**pages
,
182 u64 length
, u32 alignment
,
183 bool pages_from_pool
, bool own_pages
)
185 struct ceph_osd_data
*osd_data
;
187 osd_data
= osd_req_op_raw_data_in(osd_req
, which
);
188 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
189 pages_from_pool
, own_pages
);
191 EXPORT_SYMBOL(osd_req_op_raw_data_in_pages
);
193 void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*osd_req
,
194 unsigned int which
, struct page
**pages
,
195 u64 length
, u32 alignment
,
196 bool pages_from_pool
, bool own_pages
)
198 struct ceph_osd_data
*osd_data
;
200 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
201 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
202 pages_from_pool
, own_pages
);
204 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages
);
206 void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*osd_req
,
207 unsigned int which
, struct ceph_pagelist
*pagelist
)
209 struct ceph_osd_data
*osd_data
;
211 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
212 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
214 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist
);
217 void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*osd_req
,
218 unsigned int which
, struct bio
*bio
, size_t bio_length
)
220 struct ceph_osd_data
*osd_data
;
222 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
223 ceph_osd_data_bio_init(osd_data
, bio
, bio_length
);
225 EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio
);
226 #endif /* CONFIG_BLOCK */
228 static void osd_req_op_cls_request_info_pagelist(
229 struct ceph_osd_request
*osd_req
,
230 unsigned int which
, struct ceph_pagelist
*pagelist
)
232 struct ceph_osd_data
*osd_data
;
234 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_info
);
235 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
238 void osd_req_op_cls_request_data_pagelist(
239 struct ceph_osd_request
*osd_req
,
240 unsigned int which
, struct ceph_pagelist
*pagelist
)
242 struct ceph_osd_data
*osd_data
;
244 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
245 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
246 osd_req
->r_ops
[which
].cls
.indata_len
+= pagelist
->length
;
247 osd_req
->r_ops
[which
].indata_len
+= pagelist
->length
;
249 EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist
);
251 void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*osd_req
,
252 unsigned int which
, struct page
**pages
, u64 length
,
253 u32 alignment
, bool pages_from_pool
, bool own_pages
)
255 struct ceph_osd_data
*osd_data
;
257 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
258 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
259 pages_from_pool
, own_pages
);
260 osd_req
->r_ops
[which
].cls
.indata_len
+= length
;
261 osd_req
->r_ops
[which
].indata_len
+= length
;
263 EXPORT_SYMBOL(osd_req_op_cls_request_data_pages
);
265 void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*osd_req
,
266 unsigned int which
, struct page
**pages
, u64 length
,
267 u32 alignment
, bool pages_from_pool
, bool own_pages
)
269 struct ceph_osd_data
*osd_data
;
271 osd_data
= osd_req_op_data(osd_req
, which
, cls
, response_data
);
272 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
273 pages_from_pool
, own_pages
);
275 EXPORT_SYMBOL(osd_req_op_cls_response_data_pages
);
277 static u64
ceph_osd_data_length(struct ceph_osd_data
*osd_data
)
279 switch (osd_data
->type
) {
280 case CEPH_OSD_DATA_TYPE_NONE
:
282 case CEPH_OSD_DATA_TYPE_PAGES
:
283 return osd_data
->length
;
284 case CEPH_OSD_DATA_TYPE_PAGELIST
:
285 return (u64
)osd_data
->pagelist
->length
;
287 case CEPH_OSD_DATA_TYPE_BIO
:
288 return (u64
)osd_data
->bio_length
;
289 #endif /* CONFIG_BLOCK */
291 WARN(true, "unrecognized data type %d\n", (int)osd_data
->type
);
296 static void ceph_osd_data_release(struct ceph_osd_data
*osd_data
)
298 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
&& osd_data
->own_pages
) {
301 num_pages
= calc_pages_for((u64
)osd_data
->alignment
,
302 (u64
)osd_data
->length
);
303 ceph_release_page_vector(osd_data
->pages
, num_pages
);
305 ceph_osd_data_init(osd_data
);
308 static void osd_req_op_data_release(struct ceph_osd_request
*osd_req
,
311 struct ceph_osd_req_op
*op
;
313 BUG_ON(which
>= osd_req
->r_num_ops
);
314 op
= &osd_req
->r_ops
[which
];
317 case CEPH_OSD_OP_READ
:
318 case CEPH_OSD_OP_WRITE
:
319 case CEPH_OSD_OP_WRITEFULL
:
320 ceph_osd_data_release(&op
->extent
.osd_data
);
322 case CEPH_OSD_OP_CALL
:
323 ceph_osd_data_release(&op
->cls
.request_info
);
324 ceph_osd_data_release(&op
->cls
.request_data
);
325 ceph_osd_data_release(&op
->cls
.response_data
);
327 case CEPH_OSD_OP_SETXATTR
:
328 case CEPH_OSD_OP_CMPXATTR
:
329 ceph_osd_data_release(&op
->xattr
.osd_data
);
331 case CEPH_OSD_OP_STAT
:
332 ceph_osd_data_release(&op
->raw_data_in
);
334 case CEPH_OSD_OP_NOTIFY_ACK
:
335 ceph_osd_data_release(&op
->notify_ack
.request_data
);
337 case CEPH_OSD_OP_NOTIFY
:
338 ceph_osd_data_release(&op
->notify
.request_data
);
339 ceph_osd_data_release(&op
->notify
.response_data
);
341 case CEPH_OSD_OP_LIST_WATCHERS
:
342 ceph_osd_data_release(&op
->list_watchers
.response_data
);
350 * Assumes @t is zero-initialized.
352 static void target_init(struct ceph_osd_request_target
*t
)
354 ceph_oid_init(&t
->base_oid
);
355 ceph_oloc_init(&t
->base_oloc
);
356 ceph_oid_init(&t
->target_oid
);
357 ceph_oloc_init(&t
->target_oloc
);
359 ceph_osds_init(&t
->acting
);
360 ceph_osds_init(&t
->up
);
364 t
->osd
= CEPH_HOMELESS_OSD
;
367 static void target_copy(struct ceph_osd_request_target
*dest
,
368 const struct ceph_osd_request_target
*src
)
370 ceph_oid_copy(&dest
->base_oid
, &src
->base_oid
);
371 ceph_oloc_copy(&dest
->base_oloc
, &src
->base_oloc
);
372 ceph_oid_copy(&dest
->target_oid
, &src
->target_oid
);
373 ceph_oloc_copy(&dest
->target_oloc
, &src
->target_oloc
);
375 dest
->pgid
= src
->pgid
; /* struct */
376 dest
->pg_num
= src
->pg_num
;
377 dest
->pg_num_mask
= src
->pg_num_mask
;
378 ceph_osds_copy(&dest
->acting
, &src
->acting
);
379 ceph_osds_copy(&dest
->up
, &src
->up
);
380 dest
->size
= src
->size
;
381 dest
->min_size
= src
->min_size
;
382 dest
->sort_bitwise
= src
->sort_bitwise
;
384 dest
->flags
= src
->flags
;
385 dest
->paused
= src
->paused
;
387 dest
->osd
= src
->osd
;
390 static void target_destroy(struct ceph_osd_request_target
*t
)
392 ceph_oid_destroy(&t
->base_oid
);
393 ceph_oloc_destroy(&t
->base_oloc
);
394 ceph_oid_destroy(&t
->target_oid
);
395 ceph_oloc_destroy(&t
->target_oloc
);
401 static void request_release_checks(struct ceph_osd_request
*req
)
403 WARN_ON(!RB_EMPTY_NODE(&req
->r_node
));
404 WARN_ON(!RB_EMPTY_NODE(&req
->r_mc_node
));
405 WARN_ON(!list_empty(&req
->r_unsafe_item
));
409 static void ceph_osdc_release_request(struct kref
*kref
)
411 struct ceph_osd_request
*req
= container_of(kref
,
412 struct ceph_osd_request
, r_kref
);
415 dout("%s %p (r_request %p r_reply %p)\n", __func__
, req
,
416 req
->r_request
, req
->r_reply
);
417 request_release_checks(req
);
420 ceph_msg_put(req
->r_request
);
422 ceph_msg_put(req
->r_reply
);
424 for (which
= 0; which
< req
->r_num_ops
; which
++)
425 osd_req_op_data_release(req
, which
);
427 target_destroy(&req
->r_t
);
428 ceph_put_snap_context(req
->r_snapc
);
431 mempool_free(req
, req
->r_osdc
->req_mempool
);
432 else if (req
->r_num_ops
<= CEPH_OSD_SLAB_OPS
)
433 kmem_cache_free(ceph_osd_request_cache
, req
);
438 void ceph_osdc_get_request(struct ceph_osd_request
*req
)
440 dout("%s %p (was %d)\n", __func__
, req
,
441 atomic_read(&req
->r_kref
.refcount
));
442 kref_get(&req
->r_kref
);
444 EXPORT_SYMBOL(ceph_osdc_get_request
);
446 void ceph_osdc_put_request(struct ceph_osd_request
*req
)
449 dout("%s %p (was %d)\n", __func__
, req
,
450 atomic_read(&req
->r_kref
.refcount
));
451 kref_put(&req
->r_kref
, ceph_osdc_release_request
);
454 EXPORT_SYMBOL(ceph_osdc_put_request
);
456 static void request_init(struct ceph_osd_request
*req
)
458 /* req only, each op is zeroed in _osd_req_op_init() */
459 memset(req
, 0, sizeof(*req
));
461 kref_init(&req
->r_kref
);
462 init_completion(&req
->r_completion
);
463 init_completion(&req
->r_safe_completion
);
464 RB_CLEAR_NODE(&req
->r_node
);
465 RB_CLEAR_NODE(&req
->r_mc_node
);
466 INIT_LIST_HEAD(&req
->r_unsafe_item
);
468 target_init(&req
->r_t
);
472 * This is ugly, but it allows us to reuse linger registration and ping
473 * requests, keeping the structure of the code around send_linger{_ping}()
474 * reasonable. Setting up a min_nr=2 mempool for each linger request
475 * and dealing with copying ops (this blasts req only, watch op remains
476 * intact) isn't any better.
478 static void request_reinit(struct ceph_osd_request
*req
)
480 struct ceph_osd_client
*osdc
= req
->r_osdc
;
481 bool mempool
= req
->r_mempool
;
482 unsigned int num_ops
= req
->r_num_ops
;
483 u64 snapid
= req
->r_snapid
;
484 struct ceph_snap_context
*snapc
= req
->r_snapc
;
485 bool linger
= req
->r_linger
;
486 struct ceph_msg
*request_msg
= req
->r_request
;
487 struct ceph_msg
*reply_msg
= req
->r_reply
;
489 dout("%s req %p\n", __func__
, req
);
490 WARN_ON(atomic_read(&req
->r_kref
.refcount
) != 1);
491 request_release_checks(req
);
493 WARN_ON(atomic_read(&request_msg
->kref
.refcount
) != 1);
494 WARN_ON(atomic_read(&reply_msg
->kref
.refcount
) != 1);
495 target_destroy(&req
->r_t
);
499 req
->r_mempool
= mempool
;
500 req
->r_num_ops
= num_ops
;
501 req
->r_snapid
= snapid
;
502 req
->r_snapc
= snapc
;
503 req
->r_linger
= linger
;
504 req
->r_request
= request_msg
;
505 req
->r_reply
= reply_msg
;
508 struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
509 struct ceph_snap_context
*snapc
,
510 unsigned int num_ops
,
514 struct ceph_osd_request
*req
;
517 BUG_ON(num_ops
> CEPH_OSD_SLAB_OPS
);
518 req
= mempool_alloc(osdc
->req_mempool
, gfp_flags
);
519 } else if (num_ops
<= CEPH_OSD_SLAB_OPS
) {
520 req
= kmem_cache_alloc(ceph_osd_request_cache
, gfp_flags
);
522 BUG_ON(num_ops
> CEPH_OSD_MAX_OPS
);
523 req
= kmalloc(sizeof(*req
) + num_ops
* sizeof(req
->r_ops
[0]),
531 req
->r_mempool
= use_mempool
;
532 req
->r_num_ops
= num_ops
;
533 req
->r_snapid
= CEPH_NOSNAP
;
534 req
->r_snapc
= ceph_get_snap_context(snapc
);
536 dout("%s req %p\n", __func__
, req
);
539 EXPORT_SYMBOL(ceph_osdc_alloc_request
);
541 static int ceph_oloc_encoding_size(struct ceph_object_locator
*oloc
)
543 return 8 + 4 + 4 + 4 + (oloc
->pool_ns
? oloc
->pool_ns
->len
: 0);
546 int ceph_osdc_alloc_messages(struct ceph_osd_request
*req
, gfp_t gfp
)
548 struct ceph_osd_client
*osdc
= req
->r_osdc
;
549 struct ceph_msg
*msg
;
552 WARN_ON(ceph_oid_empty(&req
->r_base_oid
));
553 WARN_ON(ceph_oloc_empty(&req
->r_base_oloc
));
555 /* create request message */
556 msg_size
= 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */
557 msg_size
+= 4 + 4 + 4 + 8; /* mtime, reassert_version */
558 msg_size
+= CEPH_ENCODING_START_BLK_LEN
+
559 ceph_oloc_encoding_size(&req
->r_base_oloc
); /* oloc */
560 msg_size
+= 1 + 8 + 4 + 4; /* pgid */
561 msg_size
+= 4 + req
->r_base_oid
.name_len
; /* oid */
562 msg_size
+= 2 + req
->r_num_ops
* sizeof(struct ceph_osd_op
);
563 msg_size
+= 8; /* snapid */
564 msg_size
+= 8; /* snap_seq */
565 msg_size
+= 4 + 8 * (req
->r_snapc
? req
->r_snapc
->num_snaps
: 0);
566 msg_size
+= 4; /* retry_attempt */
569 msg
= ceph_msgpool_get(&osdc
->msgpool_op
, 0);
571 msg
= ceph_msg_new(CEPH_MSG_OSD_OP
, msg_size
, gfp
, true);
575 memset(msg
->front
.iov_base
, 0, msg
->front
.iov_len
);
576 req
->r_request
= msg
;
578 /* create reply message */
579 msg_size
= OSD_OPREPLY_FRONT_LEN
;
580 msg_size
+= req
->r_base_oid
.name_len
;
581 msg_size
+= req
->r_num_ops
* sizeof(struct ceph_osd_op
);
584 msg
= ceph_msgpool_get(&osdc
->msgpool_op_reply
, 0);
586 msg
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, msg_size
, gfp
, true);
594 EXPORT_SYMBOL(ceph_osdc_alloc_messages
);
596 static bool osd_req_opcode_valid(u16 opcode
)
599 #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true;
600 __CEPH_FORALL_OSD_OPS(GENERATE_CASE
)
608 * This is an osd op init function for opcodes that have no data or
609 * other information associated with them. It also serves as a
610 * common init routine for all the other init functions, below.
612 static struct ceph_osd_req_op
*
613 _osd_req_op_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
614 u16 opcode
, u32 flags
)
616 struct ceph_osd_req_op
*op
;
618 BUG_ON(which
>= osd_req
->r_num_ops
);
619 BUG_ON(!osd_req_opcode_valid(opcode
));
621 op
= &osd_req
->r_ops
[which
];
622 memset(op
, 0, sizeof (*op
));
629 void osd_req_op_init(struct ceph_osd_request
*osd_req
,
630 unsigned int which
, u16 opcode
, u32 flags
)
632 (void)_osd_req_op_init(osd_req
, which
, opcode
, flags
);
634 EXPORT_SYMBOL(osd_req_op_init
);
636 void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
637 unsigned int which
, u16 opcode
,
638 u64 offset
, u64 length
,
639 u64 truncate_size
, u32 truncate_seq
)
641 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
643 size_t payload_len
= 0;
645 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
646 opcode
!= CEPH_OSD_OP_WRITEFULL
&& opcode
!= CEPH_OSD_OP_ZERO
&&
647 opcode
!= CEPH_OSD_OP_TRUNCATE
);
649 op
->extent
.offset
= offset
;
650 op
->extent
.length
= length
;
651 op
->extent
.truncate_size
= truncate_size
;
652 op
->extent
.truncate_seq
= truncate_seq
;
653 if (opcode
== CEPH_OSD_OP_WRITE
|| opcode
== CEPH_OSD_OP_WRITEFULL
)
654 payload_len
+= length
;
656 op
->indata_len
= payload_len
;
658 EXPORT_SYMBOL(osd_req_op_extent_init
);
660 void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
661 unsigned int which
, u64 length
)
663 struct ceph_osd_req_op
*op
;
666 BUG_ON(which
>= osd_req
->r_num_ops
);
667 op
= &osd_req
->r_ops
[which
];
668 previous
= op
->extent
.length
;
670 if (length
== previous
)
671 return; /* Nothing to do */
672 BUG_ON(length
> previous
);
674 op
->extent
.length
= length
;
675 if (op
->op
== CEPH_OSD_OP_WRITE
|| op
->op
== CEPH_OSD_OP_WRITEFULL
)
676 op
->indata_len
-= previous
- length
;
678 EXPORT_SYMBOL(osd_req_op_extent_update
);
680 void osd_req_op_extent_dup_last(struct ceph_osd_request
*osd_req
,
681 unsigned int which
, u64 offset_inc
)
683 struct ceph_osd_req_op
*op
, *prev_op
;
685 BUG_ON(which
+ 1 >= osd_req
->r_num_ops
);
687 prev_op
= &osd_req
->r_ops
[which
];
688 op
= _osd_req_op_init(osd_req
, which
+ 1, prev_op
->op
, prev_op
->flags
);
689 /* dup previous one */
690 op
->indata_len
= prev_op
->indata_len
;
691 op
->outdata_len
= prev_op
->outdata_len
;
692 op
->extent
= prev_op
->extent
;
694 op
->extent
.offset
+= offset_inc
;
695 op
->extent
.length
-= offset_inc
;
697 if (op
->op
== CEPH_OSD_OP_WRITE
|| op
->op
== CEPH_OSD_OP_WRITEFULL
)
698 op
->indata_len
-= offset_inc
;
700 EXPORT_SYMBOL(osd_req_op_extent_dup_last
);
702 void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
703 u16 opcode
, const char *class, const char *method
)
705 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
707 struct ceph_pagelist
*pagelist
;
708 size_t payload_len
= 0;
711 BUG_ON(opcode
!= CEPH_OSD_OP_CALL
);
713 pagelist
= kmalloc(sizeof (*pagelist
), GFP_NOFS
);
715 ceph_pagelist_init(pagelist
);
717 op
->cls
.class_name
= class;
718 size
= strlen(class);
719 BUG_ON(size
> (size_t) U8_MAX
);
720 op
->cls
.class_len
= size
;
721 ceph_pagelist_append(pagelist
, class, size
);
724 op
->cls
.method_name
= method
;
725 size
= strlen(method
);
726 BUG_ON(size
> (size_t) U8_MAX
);
727 op
->cls
.method_len
= size
;
728 ceph_pagelist_append(pagelist
, method
, size
);
731 osd_req_op_cls_request_info_pagelist(osd_req
, which
, pagelist
);
733 op
->indata_len
= payload_len
;
735 EXPORT_SYMBOL(osd_req_op_cls_init
);
737 int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
738 u16 opcode
, const char *name
, const void *value
,
739 size_t size
, u8 cmp_op
, u8 cmp_mode
)
741 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
743 struct ceph_pagelist
*pagelist
;
746 BUG_ON(opcode
!= CEPH_OSD_OP_SETXATTR
&& opcode
!= CEPH_OSD_OP_CMPXATTR
);
748 pagelist
= kmalloc(sizeof(*pagelist
), GFP_NOFS
);
752 ceph_pagelist_init(pagelist
);
754 payload_len
= strlen(name
);
755 op
->xattr
.name_len
= payload_len
;
756 ceph_pagelist_append(pagelist
, name
, payload_len
);
758 op
->xattr
.value_len
= size
;
759 ceph_pagelist_append(pagelist
, value
, size
);
762 op
->xattr
.cmp_op
= cmp_op
;
763 op
->xattr
.cmp_mode
= cmp_mode
;
765 ceph_osd_data_pagelist_init(&op
->xattr
.osd_data
, pagelist
);
766 op
->indata_len
= payload_len
;
769 EXPORT_SYMBOL(osd_req_op_xattr_init
);
772 * @watch_opcode: CEPH_OSD_WATCH_OP_*
774 static void osd_req_op_watch_init(struct ceph_osd_request
*req
, int which
,
775 u64 cookie
, u8 watch_opcode
)
777 struct ceph_osd_req_op
*op
;
779 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_WATCH
, 0);
780 op
->watch
.cookie
= cookie
;
781 op
->watch
.op
= watch_opcode
;
785 void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
787 u64 expected_object_size
,
788 u64 expected_write_size
)
790 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
791 CEPH_OSD_OP_SETALLOCHINT
,
794 op
->alloc_hint
.expected_object_size
= expected_object_size
;
795 op
->alloc_hint
.expected_write_size
= expected_write_size
;
798 * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
799 * not worth a feature bit. Set FAILOK per-op flag to make
800 * sure older osds don't trip over an unsupported opcode.
802 op
->flags
|= CEPH_OSD_OP_FLAG_FAILOK
;
804 EXPORT_SYMBOL(osd_req_op_alloc_hint_init
);
806 static void ceph_osdc_msg_data_add(struct ceph_msg
*msg
,
807 struct ceph_osd_data
*osd_data
)
809 u64 length
= ceph_osd_data_length(osd_data
);
811 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
812 BUG_ON(length
> (u64
) SIZE_MAX
);
814 ceph_msg_data_add_pages(msg
, osd_data
->pages
,
815 length
, osd_data
->alignment
);
816 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGELIST
) {
818 ceph_msg_data_add_pagelist(msg
, osd_data
->pagelist
);
820 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_BIO
) {
821 ceph_msg_data_add_bio(msg
, osd_data
->bio
, length
);
824 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_NONE
);
828 static u32
osd_req_encode_op(struct ceph_osd_op
*dst
,
829 const struct ceph_osd_req_op
*src
)
831 if (WARN_ON(!osd_req_opcode_valid(src
->op
))) {
832 pr_err("unrecognized osd opcode %d\n", src
->op
);
838 case CEPH_OSD_OP_STAT
:
840 case CEPH_OSD_OP_READ
:
841 case CEPH_OSD_OP_WRITE
:
842 case CEPH_OSD_OP_WRITEFULL
:
843 case CEPH_OSD_OP_ZERO
:
844 case CEPH_OSD_OP_TRUNCATE
:
845 dst
->extent
.offset
= cpu_to_le64(src
->extent
.offset
);
846 dst
->extent
.length
= cpu_to_le64(src
->extent
.length
);
847 dst
->extent
.truncate_size
=
848 cpu_to_le64(src
->extent
.truncate_size
);
849 dst
->extent
.truncate_seq
=
850 cpu_to_le32(src
->extent
.truncate_seq
);
852 case CEPH_OSD_OP_CALL
:
853 dst
->cls
.class_len
= src
->cls
.class_len
;
854 dst
->cls
.method_len
= src
->cls
.method_len
;
855 dst
->cls
.indata_len
= cpu_to_le32(src
->cls
.indata_len
);
857 case CEPH_OSD_OP_STARTSYNC
:
859 case CEPH_OSD_OP_WATCH
:
860 dst
->watch
.cookie
= cpu_to_le64(src
->watch
.cookie
);
861 dst
->watch
.ver
= cpu_to_le64(0);
862 dst
->watch
.op
= src
->watch
.op
;
863 dst
->watch
.gen
= cpu_to_le32(src
->watch
.gen
);
865 case CEPH_OSD_OP_NOTIFY_ACK
:
867 case CEPH_OSD_OP_NOTIFY
:
868 dst
->notify
.cookie
= cpu_to_le64(src
->notify
.cookie
);
870 case CEPH_OSD_OP_LIST_WATCHERS
:
872 case CEPH_OSD_OP_SETALLOCHINT
:
873 dst
->alloc_hint
.expected_object_size
=
874 cpu_to_le64(src
->alloc_hint
.expected_object_size
);
875 dst
->alloc_hint
.expected_write_size
=
876 cpu_to_le64(src
->alloc_hint
.expected_write_size
);
878 case CEPH_OSD_OP_SETXATTR
:
879 case CEPH_OSD_OP_CMPXATTR
:
880 dst
->xattr
.name_len
= cpu_to_le32(src
->xattr
.name_len
);
881 dst
->xattr
.value_len
= cpu_to_le32(src
->xattr
.value_len
);
882 dst
->xattr
.cmp_op
= src
->xattr
.cmp_op
;
883 dst
->xattr
.cmp_mode
= src
->xattr
.cmp_mode
;
885 case CEPH_OSD_OP_CREATE
:
886 case CEPH_OSD_OP_DELETE
:
889 pr_err("unsupported osd opcode %s\n",
890 ceph_osd_op_name(src
->op
));
896 dst
->op
= cpu_to_le16(src
->op
);
897 dst
->flags
= cpu_to_le32(src
->flags
);
898 dst
->payload_len
= cpu_to_le32(src
->indata_len
);
900 return src
->indata_len
;
904 * build new request AND message, calculate layout, and adjust file
907 * if the file was recently truncated, we include information about its
908 * old and new size so that the object can be updated appropriately. (we
909 * avoid synchronously deleting truncated objects because it's slow.)
911 * if @do_sync, include a 'startsync' command so that the osd will flush
914 struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*osdc
,
915 struct ceph_file_layout
*layout
,
916 struct ceph_vino vino
,
918 unsigned int which
, int num_ops
,
919 int opcode
, int flags
,
920 struct ceph_snap_context
*snapc
,
925 struct ceph_osd_request
*req
;
931 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
932 opcode
!= CEPH_OSD_OP_ZERO
&& opcode
!= CEPH_OSD_OP_TRUNCATE
&&
933 opcode
!= CEPH_OSD_OP_CREATE
&& opcode
!= CEPH_OSD_OP_DELETE
);
935 req
= ceph_osdc_alloc_request(osdc
, snapc
, num_ops
, use_mempool
,
942 /* calculate max write size */
943 r
= calc_layout(layout
, off
, plen
, &objnum
, &objoff
, &objlen
);
947 if (opcode
== CEPH_OSD_OP_CREATE
|| opcode
== CEPH_OSD_OP_DELETE
) {
948 osd_req_op_init(req
, which
, opcode
, 0);
950 u32 object_size
= layout
->object_size
;
951 u32 object_base
= off
- objoff
;
952 if (!(truncate_seq
== 1 && truncate_size
== -1ULL)) {
953 if (truncate_size
<= object_base
) {
956 truncate_size
-= object_base
;
957 if (truncate_size
> object_size
)
958 truncate_size
= object_size
;
961 osd_req_op_extent_init(req
, which
, opcode
, objoff
, objlen
,
962 truncate_size
, truncate_seq
);
965 req
->r_flags
= flags
;
966 req
->r_base_oloc
.pool
= layout
->pool_id
;
967 req
->r_base_oloc
.pool_ns
= ceph_try_get_string(layout
->pool_ns
);
968 ceph_oid_printf(&req
->r_base_oid
, "%llx.%08llx", vino
.ino
, objnum
);
970 req
->r_snapid
= vino
.snap
;
971 if (flags
& CEPH_OSD_FLAG_WRITE
)
972 req
->r_data_offset
= off
;
974 r
= ceph_osdc_alloc_messages(req
, GFP_NOFS
);
981 ceph_osdc_put_request(req
);
984 EXPORT_SYMBOL(ceph_osdc_new_request
);
987 * We keep osd requests in an rbtree, sorted by ->r_tid.
989 DEFINE_RB_FUNCS(request
, struct ceph_osd_request
, r_tid
, r_node
)
990 DEFINE_RB_FUNCS(request_mc
, struct ceph_osd_request
, r_tid
, r_mc_node
)
992 static bool osd_homeless(struct ceph_osd
*osd
)
994 return osd
->o_osd
== CEPH_HOMELESS_OSD
;
997 static bool osd_registered(struct ceph_osd
*osd
)
999 verify_osdc_locked(osd
->o_osdc
);
1001 return !RB_EMPTY_NODE(&osd
->o_node
);
1005 * Assumes @osd is zero-initialized.
1007 static void osd_init(struct ceph_osd
*osd
)
1009 atomic_set(&osd
->o_ref
, 1);
1010 RB_CLEAR_NODE(&osd
->o_node
);
1011 osd
->o_requests
= RB_ROOT
;
1012 osd
->o_linger_requests
= RB_ROOT
;
1013 INIT_LIST_HEAD(&osd
->o_osd_lru
);
1014 INIT_LIST_HEAD(&osd
->o_keepalive_item
);
1015 osd
->o_incarnation
= 1;
1016 mutex_init(&osd
->lock
);
1019 static void osd_cleanup(struct ceph_osd
*osd
)
1021 WARN_ON(!RB_EMPTY_NODE(&osd
->o_node
));
1022 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_requests
));
1023 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_linger_requests
));
1024 WARN_ON(!list_empty(&osd
->o_osd_lru
));
1025 WARN_ON(!list_empty(&osd
->o_keepalive_item
));
1027 if (osd
->o_auth
.authorizer
) {
1028 WARN_ON(osd_homeless(osd
));
1029 ceph_auth_destroy_authorizer(osd
->o_auth
.authorizer
);
1034 * Track open sessions with osds.
1036 static struct ceph_osd
*create_osd(struct ceph_osd_client
*osdc
, int onum
)
1038 struct ceph_osd
*osd
;
1040 WARN_ON(onum
== CEPH_HOMELESS_OSD
);
1042 osd
= kzalloc(sizeof(*osd
), GFP_NOIO
| __GFP_NOFAIL
);
1047 ceph_con_init(&osd
->o_con
, osd
, &osd_con_ops
, &osdc
->client
->msgr
);
1052 static struct ceph_osd
*get_osd(struct ceph_osd
*osd
)
1054 if (atomic_inc_not_zero(&osd
->o_ref
)) {
1055 dout("get_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
)-1,
1056 atomic_read(&osd
->o_ref
));
1059 dout("get_osd %p FAIL\n", osd
);
1064 static void put_osd(struct ceph_osd
*osd
)
1066 dout("put_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
),
1067 atomic_read(&osd
->o_ref
) - 1);
1068 if (atomic_dec_and_test(&osd
->o_ref
)) {
1074 DEFINE_RB_FUNCS(osd
, struct ceph_osd
, o_osd
, o_node
)
1076 static void __move_osd_to_lru(struct ceph_osd
*osd
)
1078 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
1080 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1081 BUG_ON(!list_empty(&osd
->o_osd_lru
));
1083 spin_lock(&osdc
->osd_lru_lock
);
1084 list_add_tail(&osd
->o_osd_lru
, &osdc
->osd_lru
);
1085 spin_unlock(&osdc
->osd_lru_lock
);
1087 osd
->lru_ttl
= jiffies
+ osdc
->client
->options
->osd_idle_ttl
;
1090 static void maybe_move_osd_to_lru(struct ceph_osd
*osd
)
1092 if (RB_EMPTY_ROOT(&osd
->o_requests
) &&
1093 RB_EMPTY_ROOT(&osd
->o_linger_requests
))
1094 __move_osd_to_lru(osd
);
1097 static void __remove_osd_from_lru(struct ceph_osd
*osd
)
1099 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
1101 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1103 spin_lock(&osdc
->osd_lru_lock
);
1104 if (!list_empty(&osd
->o_osd_lru
))
1105 list_del_init(&osd
->o_osd_lru
);
1106 spin_unlock(&osdc
->osd_lru_lock
);
1110 * Close the connection and assign any leftover requests to the
1113 static void close_osd(struct ceph_osd
*osd
)
1115 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
1118 verify_osdc_wrlocked(osdc
);
1119 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1121 ceph_con_close(&osd
->o_con
);
1123 for (n
= rb_first(&osd
->o_requests
); n
; ) {
1124 struct ceph_osd_request
*req
=
1125 rb_entry(n
, struct ceph_osd_request
, r_node
);
1127 n
= rb_next(n
); /* unlink_request() */
1129 dout(" reassigning req %p tid %llu\n", req
, req
->r_tid
);
1130 unlink_request(osd
, req
);
1131 link_request(&osdc
->homeless_osd
, req
);
1133 for (n
= rb_first(&osd
->o_linger_requests
); n
; ) {
1134 struct ceph_osd_linger_request
*lreq
=
1135 rb_entry(n
, struct ceph_osd_linger_request
, node
);
1137 n
= rb_next(n
); /* unlink_linger() */
1139 dout(" reassigning lreq %p linger_id %llu\n", lreq
,
1141 unlink_linger(osd
, lreq
);
1142 link_linger(&osdc
->homeless_osd
, lreq
);
1145 __remove_osd_from_lru(osd
);
1146 erase_osd(&osdc
->osds
, osd
);
1153 static int reopen_osd(struct ceph_osd
*osd
)
1155 struct ceph_entity_addr
*peer_addr
;
1157 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1159 if (RB_EMPTY_ROOT(&osd
->o_requests
) &&
1160 RB_EMPTY_ROOT(&osd
->o_linger_requests
)) {
1165 peer_addr
= &osd
->o_osdc
->osdmap
->osd_addr
[osd
->o_osd
];
1166 if (!memcmp(peer_addr
, &osd
->o_con
.peer_addr
, sizeof (*peer_addr
)) &&
1167 !ceph_con_opened(&osd
->o_con
)) {
1170 dout("osd addr hasn't changed and connection never opened, "
1171 "letting msgr retry\n");
1172 /* touch each r_stamp for handle_timeout()'s benfit */
1173 for (n
= rb_first(&osd
->o_requests
); n
; n
= rb_next(n
)) {
1174 struct ceph_osd_request
*req
=
1175 rb_entry(n
, struct ceph_osd_request
, r_node
);
1176 req
->r_stamp
= jiffies
;
1182 ceph_con_close(&osd
->o_con
);
1183 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
, peer_addr
);
1184 osd
->o_incarnation
++;
1189 static struct ceph_osd
*lookup_create_osd(struct ceph_osd_client
*osdc
, int o
,
1192 struct ceph_osd
*osd
;
1195 verify_osdc_wrlocked(osdc
);
1197 verify_osdc_locked(osdc
);
1199 if (o
!= CEPH_HOMELESS_OSD
)
1200 osd
= lookup_osd(&osdc
->osds
, o
);
1202 osd
= &osdc
->homeless_osd
;
1205 return ERR_PTR(-EAGAIN
);
1207 osd
= create_osd(osdc
, o
);
1208 insert_osd(&osdc
->osds
, osd
);
1209 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
,
1210 &osdc
->osdmap
->osd_addr
[osd
->o_osd
]);
1213 dout("%s osdc %p osd%d -> osd %p\n", __func__
, osdc
, o
, osd
);
1218 * Create request <-> OSD session relation.
1220 * @req has to be assigned a tid, @osd may be homeless.
1222 static void link_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
)
1224 verify_osd_locked(osd
);
1225 WARN_ON(!req
->r_tid
|| req
->r_osd
);
1226 dout("%s osd %p osd%d req %p tid %llu\n", __func__
, osd
, osd
->o_osd
,
1229 if (!osd_homeless(osd
))
1230 __remove_osd_from_lru(osd
);
1232 atomic_inc(&osd
->o_osdc
->num_homeless
);
1235 insert_request(&osd
->o_requests
, req
);
1239 static void unlink_request(struct ceph_osd
*osd
, struct ceph_osd_request
*req
)
1241 verify_osd_locked(osd
);
1242 WARN_ON(req
->r_osd
!= osd
);
1243 dout("%s osd %p osd%d req %p tid %llu\n", __func__
, osd
, osd
->o_osd
,
1247 erase_request(&osd
->o_requests
, req
);
1250 if (!osd_homeless(osd
))
1251 maybe_move_osd_to_lru(osd
);
1253 atomic_dec(&osd
->o_osdc
->num_homeless
);
1256 static bool __pool_full(struct ceph_pg_pool_info
*pi
)
1258 return pi
->flags
& CEPH_POOL_FLAG_FULL
;
1261 static bool have_pool_full(struct ceph_osd_client
*osdc
)
1265 for (n
= rb_first(&osdc
->osdmap
->pg_pools
); n
; n
= rb_next(n
)) {
1266 struct ceph_pg_pool_info
*pi
=
1267 rb_entry(n
, struct ceph_pg_pool_info
, node
);
1269 if (__pool_full(pi
))
1276 static bool pool_full(struct ceph_osd_client
*osdc
, s64 pool_id
)
1278 struct ceph_pg_pool_info
*pi
;
1280 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pool_id
);
1284 return __pool_full(pi
);
1288 * Returns whether a request should be blocked from being sent
1289 * based on the current osdmap and osd_client settings.
1291 static bool target_should_be_paused(struct ceph_osd_client
*osdc
,
1292 const struct ceph_osd_request_target
*t
,
1293 struct ceph_pg_pool_info
*pi
)
1295 bool pauserd
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
);
1296 bool pausewr
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
) ||
1297 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
1300 WARN_ON(pi
->id
!= t
->base_oloc
.pool
);
1301 return (t
->flags
& CEPH_OSD_FLAG_READ
&& pauserd
) ||
1302 (t
->flags
& CEPH_OSD_FLAG_WRITE
&& pausewr
);
1305 enum calc_target_result
{
1306 CALC_TARGET_NO_ACTION
= 0,
1307 CALC_TARGET_NEED_RESEND
,
1308 CALC_TARGET_POOL_DNE
,
1311 static enum calc_target_result
calc_target(struct ceph_osd_client
*osdc
,
1312 struct ceph_osd_request_target
*t
,
1313 u32
*last_force_resend
,
1316 struct ceph_pg_pool_info
*pi
;
1317 struct ceph_pg pgid
, last_pgid
;
1318 struct ceph_osds up
, acting
;
1319 bool force_resend
= false;
1320 bool need_check_tiering
= false;
1321 bool need_resend
= false;
1322 bool sort_bitwise
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_SORTBITWISE
);
1323 enum calc_target_result ct_res
;
1326 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, t
->base_oloc
.pool
);
1328 t
->osd
= CEPH_HOMELESS_OSD
;
1329 ct_res
= CALC_TARGET_POOL_DNE
;
1333 if (osdc
->osdmap
->epoch
== pi
->last_force_request_resend
) {
1334 if (last_force_resend
&&
1335 *last_force_resend
< pi
->last_force_request_resend
) {
1336 *last_force_resend
= pi
->last_force_request_resend
;
1337 force_resend
= true;
1338 } else if (!last_force_resend
) {
1339 force_resend
= true;
1342 if (ceph_oid_empty(&t
->target_oid
) || force_resend
) {
1343 ceph_oid_copy(&t
->target_oid
, &t
->base_oid
);
1344 need_check_tiering
= true;
1346 if (ceph_oloc_empty(&t
->target_oloc
) || force_resend
) {
1347 ceph_oloc_copy(&t
->target_oloc
, &t
->base_oloc
);
1348 need_check_tiering
= true;
1351 if (need_check_tiering
&&
1352 (t
->flags
& CEPH_OSD_FLAG_IGNORE_OVERLAY
) == 0) {
1353 if (t
->flags
& CEPH_OSD_FLAG_READ
&& pi
->read_tier
>= 0)
1354 t
->target_oloc
.pool
= pi
->read_tier
;
1355 if (t
->flags
& CEPH_OSD_FLAG_WRITE
&& pi
->write_tier
>= 0)
1356 t
->target_oloc
.pool
= pi
->write_tier
;
1359 ret
= ceph_object_locator_to_pg(osdc
->osdmap
, &t
->target_oid
,
1360 &t
->target_oloc
, &pgid
);
1362 WARN_ON(ret
!= -ENOENT
);
1363 t
->osd
= CEPH_HOMELESS_OSD
;
1364 ct_res
= CALC_TARGET_POOL_DNE
;
1367 last_pgid
.pool
= pgid
.pool
;
1368 last_pgid
.seed
= ceph_stable_mod(pgid
.seed
, t
->pg_num
, t
->pg_num_mask
);
1370 ceph_pg_to_up_acting_osds(osdc
->osdmap
, &pgid
, &up
, &acting
);
1372 ceph_is_new_interval(&t
->acting
,
1385 force_resend
= true;
1387 if (t
->paused
&& !target_should_be_paused(osdc
, t
, pi
)) {
1392 if (ceph_pg_compare(&t
->pgid
, &pgid
) ||
1393 ceph_osds_changed(&t
->acting
, &acting
, any_change
) ||
1395 t
->pgid
= pgid
; /* struct */
1396 ceph_osds_copy(&t
->acting
, &acting
);
1397 ceph_osds_copy(&t
->up
, &up
);
1399 t
->min_size
= pi
->min_size
;
1400 t
->pg_num
= pi
->pg_num
;
1401 t
->pg_num_mask
= pi
->pg_num_mask
;
1402 t
->sort_bitwise
= sort_bitwise
;
1404 t
->osd
= acting
.primary
;
1408 ct_res
= need_resend
? CALC_TARGET_NEED_RESEND
: CALC_TARGET_NO_ACTION
;
1410 dout("%s t %p -> ct_res %d osd %d\n", __func__
, t
, ct_res
, t
->osd
);
1414 static void setup_request_data(struct ceph_osd_request
*req
,
1415 struct ceph_msg
*msg
)
1420 if (!list_empty(&msg
->data
))
1423 WARN_ON(msg
->data_length
);
1424 for (i
= 0; i
< req
->r_num_ops
; i
++) {
1425 struct ceph_osd_req_op
*op
= &req
->r_ops
[i
];
1429 case CEPH_OSD_OP_WRITE
:
1430 case CEPH_OSD_OP_WRITEFULL
:
1431 WARN_ON(op
->indata_len
!= op
->extent
.length
);
1432 ceph_osdc_msg_data_add(msg
, &op
->extent
.osd_data
);
1434 case CEPH_OSD_OP_SETXATTR
:
1435 case CEPH_OSD_OP_CMPXATTR
:
1436 WARN_ON(op
->indata_len
!= op
->xattr
.name_len
+
1437 op
->xattr
.value_len
);
1438 ceph_osdc_msg_data_add(msg
, &op
->xattr
.osd_data
);
1440 case CEPH_OSD_OP_NOTIFY_ACK
:
1441 ceph_osdc_msg_data_add(msg
,
1442 &op
->notify_ack
.request_data
);
1446 case CEPH_OSD_OP_STAT
:
1447 ceph_osdc_msg_data_add(req
->r_reply
,
1450 case CEPH_OSD_OP_READ
:
1451 ceph_osdc_msg_data_add(req
->r_reply
,
1452 &op
->extent
.osd_data
);
1454 case CEPH_OSD_OP_LIST_WATCHERS
:
1455 ceph_osdc_msg_data_add(req
->r_reply
,
1456 &op
->list_watchers
.response_data
);
1460 case CEPH_OSD_OP_CALL
:
1461 WARN_ON(op
->indata_len
!= op
->cls
.class_len
+
1462 op
->cls
.method_len
+
1463 op
->cls
.indata_len
);
1464 ceph_osdc_msg_data_add(msg
, &op
->cls
.request_info
);
1465 /* optional, can be NONE */
1466 ceph_osdc_msg_data_add(msg
, &op
->cls
.request_data
);
1467 /* optional, can be NONE */
1468 ceph_osdc_msg_data_add(req
->r_reply
,
1469 &op
->cls
.response_data
);
1471 case CEPH_OSD_OP_NOTIFY
:
1472 ceph_osdc_msg_data_add(msg
,
1473 &op
->notify
.request_data
);
1474 ceph_osdc_msg_data_add(req
->r_reply
,
1475 &op
->notify
.response_data
);
1479 data_len
+= op
->indata_len
;
1482 WARN_ON(data_len
!= msg
->data_length
);
1485 static void encode_request(struct ceph_osd_request
*req
, struct ceph_msg
*msg
)
1487 void *p
= msg
->front
.iov_base
;
1488 void *const end
= p
+ msg
->front_alloc_len
;
1492 if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
) {
1493 /* snapshots aren't writeable */
1494 WARN_ON(req
->r_snapid
!= CEPH_NOSNAP
);
1496 WARN_ON(req
->r_mtime
.tv_sec
|| req
->r_mtime
.tv_nsec
||
1497 req
->r_data_offset
|| req
->r_snapc
);
1500 setup_request_data(req
, msg
);
1502 ceph_encode_32(&p
, 1); /* client_inc, always 1 */
1503 ceph_encode_32(&p
, req
->r_osdc
->osdmap
->epoch
);
1504 ceph_encode_32(&p
, req
->r_flags
);
1505 ceph_encode_timespec(p
, &req
->r_mtime
);
1506 p
+= sizeof(struct ceph_timespec
);
1507 /* aka reassert_version */
1508 memcpy(p
, &req
->r_replay_version
, sizeof(req
->r_replay_version
));
1509 p
+= sizeof(req
->r_replay_version
);
1512 ceph_start_encoding(&p
, 5, 4,
1513 ceph_oloc_encoding_size(&req
->r_t
.target_oloc
));
1514 ceph_encode_64(&p
, req
->r_t
.target_oloc
.pool
);
1515 ceph_encode_32(&p
, -1); /* preferred */
1516 ceph_encode_32(&p
, 0); /* key len */
1517 if (req
->r_t
.target_oloc
.pool_ns
)
1518 ceph_encode_string(&p
, end
, req
->r_t
.target_oloc
.pool_ns
->str
,
1519 req
->r_t
.target_oloc
.pool_ns
->len
);
1521 ceph_encode_32(&p
, 0);
1524 ceph_encode_8(&p
, 1);
1525 ceph_encode_64(&p
, req
->r_t
.pgid
.pool
);
1526 ceph_encode_32(&p
, req
->r_t
.pgid
.seed
);
1527 ceph_encode_32(&p
, -1); /* preferred */
1530 ceph_encode_32(&p
, req
->r_t
.target_oid
.name_len
);
1531 memcpy(p
, req
->r_t
.target_oid
.name
, req
->r_t
.target_oid
.name_len
);
1532 p
+= req
->r_t
.target_oid
.name_len
;
1534 /* ops, can imply data */
1535 ceph_encode_16(&p
, req
->r_num_ops
);
1536 for (i
= 0; i
< req
->r_num_ops
; i
++) {
1537 data_len
+= osd_req_encode_op(p
, &req
->r_ops
[i
]);
1538 p
+= sizeof(struct ceph_osd_op
);
1541 ceph_encode_64(&p
, req
->r_snapid
); /* snapid */
1543 ceph_encode_64(&p
, req
->r_snapc
->seq
);
1544 ceph_encode_32(&p
, req
->r_snapc
->num_snaps
);
1545 for (i
= 0; i
< req
->r_snapc
->num_snaps
; i
++)
1546 ceph_encode_64(&p
, req
->r_snapc
->snaps
[i
]);
1548 ceph_encode_64(&p
, 0); /* snap_seq */
1549 ceph_encode_32(&p
, 0); /* snaps len */
1552 ceph_encode_32(&p
, req
->r_attempts
); /* retry_attempt */
1555 msg
->front
.iov_len
= p
- msg
->front
.iov_base
;
1556 msg
->hdr
.version
= cpu_to_le16(4); /* MOSDOp v4 */
1557 msg
->hdr
.front_len
= cpu_to_le32(msg
->front
.iov_len
);
1558 msg
->hdr
.data_len
= cpu_to_le32(data_len
);
1560 * The header "data_off" is a hint to the receiver allowing it
1561 * to align received data into its buffers such that there's no
1562 * need to re-copy it before writing it to disk (direct I/O).
1564 msg
->hdr
.data_off
= cpu_to_le16(req
->r_data_offset
);
1566 dout("%s req %p oid %s oid_len %d front %zu data %u\n", __func__
,
1567 req
, req
->r_t
.target_oid
.name
, req
->r_t
.target_oid
.name_len
,
1568 msg
->front
.iov_len
, data_len
);
1572 * @req has to be assigned a tid and registered.
1574 static void send_request(struct ceph_osd_request
*req
)
1576 struct ceph_osd
*osd
= req
->r_osd
;
1578 verify_osd_locked(osd
);
1579 WARN_ON(osd
->o_osd
!= req
->r_t
.osd
);
1582 * We may have a previously queued request message hanging
1583 * around. Cancel it to avoid corrupting the msgr.
1586 ceph_msg_revoke(req
->r_request
);
1588 req
->r_flags
|= CEPH_OSD_FLAG_KNOWN_REDIR
;
1589 if (req
->r_attempts
)
1590 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
1592 WARN_ON(req
->r_flags
& CEPH_OSD_FLAG_RETRY
);
1594 encode_request(req
, req
->r_request
);
1596 dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n",
1597 __func__
, req
, req
->r_tid
, req
->r_t
.pgid
.pool
, req
->r_t
.pgid
.seed
,
1598 req
->r_t
.osd
, req
->r_flags
, req
->r_attempts
);
1600 req
->r_t
.paused
= false;
1601 req
->r_stamp
= jiffies
;
1604 req
->r_sent
= osd
->o_incarnation
;
1605 req
->r_request
->hdr
.tid
= cpu_to_le64(req
->r_tid
);
1606 ceph_con_send(&osd
->o_con
, ceph_msg_get(req
->r_request
));
1609 static void maybe_request_map(struct ceph_osd_client
*osdc
)
1611 bool continuous
= false;
1613 verify_osdc_locked(osdc
);
1614 WARN_ON(!osdc
->osdmap
->epoch
);
1616 if (ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
1617 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
) ||
1618 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
)) {
1619 dout("%s osdc %p continuous\n", __func__
, osdc
);
1622 dout("%s osdc %p onetime\n", __func__
, osdc
);
1625 if (ceph_monc_want_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
1626 osdc
->osdmap
->epoch
+ 1, continuous
))
1627 ceph_monc_renew_subs(&osdc
->client
->monc
);
1630 static void send_map_check(struct ceph_osd_request
*req
);
1632 static void __submit_request(struct ceph_osd_request
*req
, bool wrlocked
)
1634 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1635 struct ceph_osd
*osd
;
1636 enum calc_target_result ct_res
;
1637 bool need_send
= false;
1638 bool promoted
= false;
1640 WARN_ON(req
->r_tid
|| req
->r_got_reply
);
1641 dout("%s req %p wrlocked %d\n", __func__
, req
, wrlocked
);
1644 ct_res
= calc_target(osdc
, &req
->r_t
, &req
->r_last_force_resend
, false);
1645 if (ct_res
== CALC_TARGET_POOL_DNE
&& !wrlocked
)
1648 osd
= lookup_create_osd(osdc
, req
->r_t
.osd
, wrlocked
);
1650 WARN_ON(PTR_ERR(osd
) != -EAGAIN
|| wrlocked
);
1654 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1655 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
)) {
1656 dout("req %p pausewr\n", req
);
1657 req
->r_t
.paused
= true;
1658 maybe_request_map(osdc
);
1659 } else if ((req
->r_flags
& CEPH_OSD_FLAG_READ
) &&
1660 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
)) {
1661 dout("req %p pauserd\n", req
);
1662 req
->r_t
.paused
= true;
1663 maybe_request_map(osdc
);
1664 } else if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1665 !(req
->r_flags
& (CEPH_OSD_FLAG_FULL_TRY
|
1666 CEPH_OSD_FLAG_FULL_FORCE
)) &&
1667 (ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
1668 pool_full(osdc
, req
->r_t
.base_oloc
.pool
))) {
1669 dout("req %p full/pool_full\n", req
);
1670 pr_warn_ratelimited("FULL or reached pool quota\n");
1671 req
->r_t
.paused
= true;
1672 maybe_request_map(osdc
);
1673 } else if (!osd_homeless(osd
)) {
1676 maybe_request_map(osdc
);
1679 mutex_lock(&osd
->lock
);
1681 * Assign the tid atomically with send_request() to protect
1682 * multiple writes to the same object from racing with each
1683 * other, resulting in out of order ops on the OSDs.
1685 req
->r_tid
= atomic64_inc_return(&osdc
->last_tid
);
1686 link_request(osd
, req
);
1689 mutex_unlock(&osd
->lock
);
1691 if (ct_res
== CALC_TARGET_POOL_DNE
)
1692 send_map_check(req
);
1695 downgrade_write(&osdc
->lock
);
1699 up_read(&osdc
->lock
);
1700 down_write(&osdc
->lock
);
1706 static void account_request(struct ceph_osd_request
*req
)
1708 unsigned int mask
= CEPH_OSD_FLAG_ACK
| CEPH_OSD_FLAG_ONDISK
;
1710 if (req
->r_flags
& CEPH_OSD_FLAG_READ
) {
1711 WARN_ON(req
->r_flags
& mask
);
1712 req
->r_flags
|= CEPH_OSD_FLAG_ACK
;
1713 } else if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
)
1714 WARN_ON(!(req
->r_flags
& mask
));
1718 WARN_ON(req
->r_unsafe_callback
&& (req
->r_flags
& mask
) != mask
);
1719 atomic_inc(&req
->r_osdc
->num_requests
);
1722 static void submit_request(struct ceph_osd_request
*req
, bool wrlocked
)
1724 ceph_osdc_get_request(req
);
1725 account_request(req
);
1726 __submit_request(req
, wrlocked
);
1729 static void __finish_request(struct ceph_osd_request
*req
)
1731 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1732 struct ceph_osd
*osd
= req
->r_osd
;
1734 verify_osd_locked(osd
);
1735 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
1737 WARN_ON(lookup_request_mc(&osdc
->map_checks
, req
->r_tid
));
1738 unlink_request(osd
, req
);
1739 atomic_dec(&osdc
->num_requests
);
1742 * If an OSD has failed or returned and a request has been sent
1743 * twice, it's possible to get a reply and end up here while the
1744 * request message is queued for delivery. We will ignore the
1745 * reply, so not a big deal, but better to try and catch it.
1747 ceph_msg_revoke(req
->r_request
);
1748 ceph_msg_revoke_incoming(req
->r_reply
);
1751 static void finish_request(struct ceph_osd_request
*req
)
1753 __finish_request(req
);
1754 ceph_osdc_put_request(req
);
1757 static void __complete_request(struct ceph_osd_request
*req
)
1759 if (req
->r_callback
)
1760 req
->r_callback(req
);
1762 complete_all(&req
->r_completion
);
1766 * Note that this is open-coded in handle_reply(), which has to deal
1767 * with ack vs commit, dup acks, etc.
1769 static void complete_request(struct ceph_osd_request
*req
, int err
)
1771 dout("%s req %p tid %llu err %d\n", __func__
, req
, req
->r_tid
, err
);
1773 req
->r_result
= err
;
1774 __finish_request(req
);
1775 __complete_request(req
);
1776 complete_all(&req
->r_safe_completion
);
1777 ceph_osdc_put_request(req
);
1780 static void cancel_map_check(struct ceph_osd_request
*req
)
1782 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1783 struct ceph_osd_request
*lookup_req
;
1785 verify_osdc_wrlocked(osdc
);
1787 lookup_req
= lookup_request_mc(&osdc
->map_checks
, req
->r_tid
);
1791 WARN_ON(lookup_req
!= req
);
1792 erase_request_mc(&osdc
->map_checks
, req
);
1793 ceph_osdc_put_request(req
);
1796 static void cancel_request(struct ceph_osd_request
*req
)
1798 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
1800 cancel_map_check(req
);
1801 finish_request(req
);
1804 static void check_pool_dne(struct ceph_osd_request
*req
)
1806 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1807 struct ceph_osdmap
*map
= osdc
->osdmap
;
1809 verify_osdc_wrlocked(osdc
);
1810 WARN_ON(!map
->epoch
);
1812 if (req
->r_attempts
) {
1814 * We sent a request earlier, which means that
1815 * previously the pool existed, and now it does not
1816 * (i.e., it was deleted).
1818 req
->r_map_dne_bound
= map
->epoch
;
1819 dout("%s req %p tid %llu pool disappeared\n", __func__
, req
,
1822 dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__
,
1823 req
, req
->r_tid
, req
->r_map_dne_bound
, map
->epoch
);
1826 if (req
->r_map_dne_bound
) {
1827 if (map
->epoch
>= req
->r_map_dne_bound
) {
1828 /* we had a new enough map */
1829 pr_info_ratelimited("tid %llu pool does not exist\n",
1831 complete_request(req
, -ENOENT
);
1834 send_map_check(req
);
1838 static void map_check_cb(struct ceph_mon_generic_request
*greq
)
1840 struct ceph_osd_client
*osdc
= &greq
->monc
->client
->osdc
;
1841 struct ceph_osd_request
*req
;
1842 u64 tid
= greq
->private_data
;
1844 WARN_ON(greq
->result
|| !greq
->u
.newest
);
1846 down_write(&osdc
->lock
);
1847 req
= lookup_request_mc(&osdc
->map_checks
, tid
);
1849 dout("%s tid %llu dne\n", __func__
, tid
);
1853 dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__
,
1854 req
, req
->r_tid
, req
->r_map_dne_bound
, greq
->u
.newest
);
1855 if (!req
->r_map_dne_bound
)
1856 req
->r_map_dne_bound
= greq
->u
.newest
;
1857 erase_request_mc(&osdc
->map_checks
, req
);
1858 check_pool_dne(req
);
1860 ceph_osdc_put_request(req
);
1862 up_write(&osdc
->lock
);
1865 static void send_map_check(struct ceph_osd_request
*req
)
1867 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1868 struct ceph_osd_request
*lookup_req
;
1871 verify_osdc_wrlocked(osdc
);
1873 lookup_req
= lookup_request_mc(&osdc
->map_checks
, req
->r_tid
);
1875 WARN_ON(lookup_req
!= req
);
1879 ceph_osdc_get_request(req
);
1880 insert_request_mc(&osdc
->map_checks
, req
);
1881 ret
= ceph_monc_get_version_async(&osdc
->client
->monc
, "osdmap",
1882 map_check_cb
, req
->r_tid
);
1887 * lingering requests, watch/notify v2 infrastructure
1889 static void linger_release(struct kref
*kref
)
1891 struct ceph_osd_linger_request
*lreq
=
1892 container_of(kref
, struct ceph_osd_linger_request
, kref
);
1894 dout("%s lreq %p reg_req %p ping_req %p\n", __func__
, lreq
,
1895 lreq
->reg_req
, lreq
->ping_req
);
1896 WARN_ON(!RB_EMPTY_NODE(&lreq
->node
));
1897 WARN_ON(!RB_EMPTY_NODE(&lreq
->osdc_node
));
1898 WARN_ON(!RB_EMPTY_NODE(&lreq
->mc_node
));
1899 WARN_ON(!list_empty(&lreq
->scan_item
));
1900 WARN_ON(!list_empty(&lreq
->pending_lworks
));
1904 ceph_osdc_put_request(lreq
->reg_req
);
1906 ceph_osdc_put_request(lreq
->ping_req
);
1907 target_destroy(&lreq
->t
);
1911 static void linger_put(struct ceph_osd_linger_request
*lreq
)
1914 kref_put(&lreq
->kref
, linger_release
);
1917 static struct ceph_osd_linger_request
*
1918 linger_get(struct ceph_osd_linger_request
*lreq
)
1920 kref_get(&lreq
->kref
);
1924 static struct ceph_osd_linger_request
*
1925 linger_alloc(struct ceph_osd_client
*osdc
)
1927 struct ceph_osd_linger_request
*lreq
;
1929 lreq
= kzalloc(sizeof(*lreq
), GFP_NOIO
);
1933 kref_init(&lreq
->kref
);
1934 mutex_init(&lreq
->lock
);
1935 RB_CLEAR_NODE(&lreq
->node
);
1936 RB_CLEAR_NODE(&lreq
->osdc_node
);
1937 RB_CLEAR_NODE(&lreq
->mc_node
);
1938 INIT_LIST_HEAD(&lreq
->scan_item
);
1939 INIT_LIST_HEAD(&lreq
->pending_lworks
);
1940 init_completion(&lreq
->reg_commit_wait
);
1941 init_completion(&lreq
->notify_finish_wait
);
1944 target_init(&lreq
->t
);
1946 dout("%s lreq %p\n", __func__
, lreq
);
1950 DEFINE_RB_INSDEL_FUNCS(linger
, struct ceph_osd_linger_request
, linger_id
, node
)
1951 DEFINE_RB_FUNCS(linger_osdc
, struct ceph_osd_linger_request
, linger_id
, osdc_node
)
1952 DEFINE_RB_FUNCS(linger_mc
, struct ceph_osd_linger_request
, linger_id
, mc_node
)
1955 * Create linger request <-> OSD session relation.
1957 * @lreq has to be registered, @osd may be homeless.
1959 static void link_linger(struct ceph_osd
*osd
,
1960 struct ceph_osd_linger_request
*lreq
)
1962 verify_osd_locked(osd
);
1963 WARN_ON(!lreq
->linger_id
|| lreq
->osd
);
1964 dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__
, osd
,
1965 osd
->o_osd
, lreq
, lreq
->linger_id
);
1967 if (!osd_homeless(osd
))
1968 __remove_osd_from_lru(osd
);
1970 atomic_inc(&osd
->o_osdc
->num_homeless
);
1973 insert_linger(&osd
->o_linger_requests
, lreq
);
1977 static void unlink_linger(struct ceph_osd
*osd
,
1978 struct ceph_osd_linger_request
*lreq
)
1980 verify_osd_locked(osd
);
1981 WARN_ON(lreq
->osd
!= osd
);
1982 dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__
, osd
,
1983 osd
->o_osd
, lreq
, lreq
->linger_id
);
1986 erase_linger(&osd
->o_linger_requests
, lreq
);
1989 if (!osd_homeless(osd
))
1990 maybe_move_osd_to_lru(osd
);
1992 atomic_dec(&osd
->o_osdc
->num_homeless
);
1995 static bool __linger_registered(struct ceph_osd_linger_request
*lreq
)
1997 verify_osdc_locked(lreq
->osdc
);
1999 return !RB_EMPTY_NODE(&lreq
->osdc_node
);
2002 static bool linger_registered(struct ceph_osd_linger_request
*lreq
)
2004 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2007 down_read(&osdc
->lock
);
2008 registered
= __linger_registered(lreq
);
2009 up_read(&osdc
->lock
);
2014 static void linger_register(struct ceph_osd_linger_request
*lreq
)
2016 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2018 verify_osdc_wrlocked(osdc
);
2019 WARN_ON(lreq
->linger_id
);
2022 lreq
->linger_id
= ++osdc
->last_linger_id
;
2023 insert_linger_osdc(&osdc
->linger_requests
, lreq
);
2026 static void linger_unregister(struct ceph_osd_linger_request
*lreq
)
2028 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2030 verify_osdc_wrlocked(osdc
);
2032 erase_linger_osdc(&osdc
->linger_requests
, lreq
);
2036 static void cancel_linger_request(struct ceph_osd_request
*req
)
2038 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2040 WARN_ON(!req
->r_linger
);
2041 cancel_request(req
);
2045 struct linger_work
{
2046 struct work_struct work
;
2047 struct ceph_osd_linger_request
*lreq
;
2048 struct list_head pending_item
;
2049 unsigned long queued_stamp
;
2055 void *payload
; /* points into @msg front */
2058 struct ceph_msg
*msg
; /* for ceph_msg_put() */
2066 static struct linger_work
*lwork_alloc(struct ceph_osd_linger_request
*lreq
,
2069 struct linger_work
*lwork
;
2071 lwork
= kzalloc(sizeof(*lwork
), GFP_NOIO
);
2075 INIT_WORK(&lwork
->work
, workfn
);
2076 INIT_LIST_HEAD(&lwork
->pending_item
);
2077 lwork
->lreq
= linger_get(lreq
);
2082 static void lwork_free(struct linger_work
*lwork
)
2084 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2086 mutex_lock(&lreq
->lock
);
2087 list_del(&lwork
->pending_item
);
2088 mutex_unlock(&lreq
->lock
);
2094 static void lwork_queue(struct linger_work
*lwork
)
2096 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2097 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2099 verify_lreq_locked(lreq
);
2100 WARN_ON(!list_empty(&lwork
->pending_item
));
2102 lwork
->queued_stamp
= jiffies
;
2103 list_add_tail(&lwork
->pending_item
, &lreq
->pending_lworks
);
2104 queue_work(osdc
->notify_wq
, &lwork
->work
);
2107 static void do_watch_notify(struct work_struct
*w
)
2109 struct linger_work
*lwork
= container_of(w
, struct linger_work
, work
);
2110 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2112 if (!linger_registered(lreq
)) {
2113 dout("%s lreq %p not registered\n", __func__
, lreq
);
2117 WARN_ON(!lreq
->is_watch
);
2118 dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n",
2119 __func__
, lreq
, lwork
->notify
.notify_id
, lwork
->notify
.notifier_id
,
2120 lwork
->notify
.payload_len
);
2121 lreq
->wcb(lreq
->data
, lwork
->notify
.notify_id
, lreq
->linger_id
,
2122 lwork
->notify
.notifier_id
, lwork
->notify
.payload
,
2123 lwork
->notify
.payload_len
);
2126 ceph_msg_put(lwork
->notify
.msg
);
2130 static void do_watch_error(struct work_struct
*w
)
2132 struct linger_work
*lwork
= container_of(w
, struct linger_work
, work
);
2133 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2135 if (!linger_registered(lreq
)) {
2136 dout("%s lreq %p not registered\n", __func__
, lreq
);
2140 dout("%s lreq %p err %d\n", __func__
, lreq
, lwork
->error
.err
);
2141 lreq
->errcb(lreq
->data
, lreq
->linger_id
, lwork
->error
.err
);
2147 static void queue_watch_error(struct ceph_osd_linger_request
*lreq
)
2149 struct linger_work
*lwork
;
2151 lwork
= lwork_alloc(lreq
, do_watch_error
);
2153 pr_err("failed to allocate error-lwork\n");
2157 lwork
->error
.err
= lreq
->last_error
;
2161 static void linger_reg_commit_complete(struct ceph_osd_linger_request
*lreq
,
2164 if (!completion_done(&lreq
->reg_commit_wait
)) {
2165 lreq
->reg_commit_error
= (result
<= 0 ? result
: 0);
2166 complete_all(&lreq
->reg_commit_wait
);
2170 static void linger_commit_cb(struct ceph_osd_request
*req
)
2172 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2174 mutex_lock(&lreq
->lock
);
2175 dout("%s lreq %p linger_id %llu result %d\n", __func__
, lreq
,
2176 lreq
->linger_id
, req
->r_result
);
2177 WARN_ON(!__linger_registered(lreq
));
2178 linger_reg_commit_complete(lreq
, req
->r_result
);
2179 lreq
->committed
= true;
2181 if (!lreq
->is_watch
) {
2182 struct ceph_osd_data
*osd_data
=
2183 osd_req_op_data(req
, 0, notify
, response_data
);
2184 void *p
= page_address(osd_data
->pages
[0]);
2186 WARN_ON(req
->r_ops
[0].op
!= CEPH_OSD_OP_NOTIFY
||
2187 osd_data
->type
!= CEPH_OSD_DATA_TYPE_PAGES
);
2189 /* make note of the notify_id */
2190 if (req
->r_ops
[0].outdata_len
>= sizeof(u64
)) {
2191 lreq
->notify_id
= ceph_decode_64(&p
);
2192 dout("lreq %p notify_id %llu\n", lreq
,
2195 dout("lreq %p no notify_id\n", lreq
);
2199 mutex_unlock(&lreq
->lock
);
2203 static int normalize_watch_error(int err
)
2206 * Translate ENOENT -> ENOTCONN so that a delete->disconnection
2207 * notification and a failure to reconnect because we raced with
2208 * the delete appear the same to the user.
2216 static void linger_reconnect_cb(struct ceph_osd_request
*req
)
2218 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2220 mutex_lock(&lreq
->lock
);
2221 dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__
,
2222 lreq
, lreq
->linger_id
, req
->r_result
, lreq
->last_error
);
2223 if (req
->r_result
< 0) {
2224 if (!lreq
->last_error
) {
2225 lreq
->last_error
= normalize_watch_error(req
->r_result
);
2226 queue_watch_error(lreq
);
2230 mutex_unlock(&lreq
->lock
);
2234 static void send_linger(struct ceph_osd_linger_request
*lreq
)
2236 struct ceph_osd_request
*req
= lreq
->reg_req
;
2237 struct ceph_osd_req_op
*op
= &req
->r_ops
[0];
2239 verify_osdc_wrlocked(req
->r_osdc
);
2240 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2243 cancel_linger_request(req
);
2245 request_reinit(req
);
2246 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
2247 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
2248 req
->r_flags
= lreq
->t
.flags
;
2249 req
->r_mtime
= lreq
->mtime
;
2251 mutex_lock(&lreq
->lock
);
2252 if (lreq
->is_watch
&& lreq
->committed
) {
2253 WARN_ON(op
->op
!= CEPH_OSD_OP_WATCH
||
2254 op
->watch
.cookie
!= lreq
->linger_id
);
2255 op
->watch
.op
= CEPH_OSD_WATCH_OP_RECONNECT
;
2256 op
->watch
.gen
= ++lreq
->register_gen
;
2257 dout("lreq %p reconnect register_gen %u\n", lreq
,
2259 req
->r_callback
= linger_reconnect_cb
;
2261 if (!lreq
->is_watch
)
2262 lreq
->notify_id
= 0;
2264 WARN_ON(op
->watch
.op
!= CEPH_OSD_WATCH_OP_WATCH
);
2265 dout("lreq %p register\n", lreq
);
2266 req
->r_callback
= linger_commit_cb
;
2268 mutex_unlock(&lreq
->lock
);
2270 req
->r_priv
= linger_get(lreq
);
2271 req
->r_linger
= true;
2273 submit_request(req
, true);
2276 static void linger_ping_cb(struct ceph_osd_request
*req
)
2278 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2280 mutex_lock(&lreq
->lock
);
2281 dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n",
2282 __func__
, lreq
, lreq
->linger_id
, req
->r_result
, lreq
->ping_sent
,
2284 if (lreq
->register_gen
== req
->r_ops
[0].watch
.gen
) {
2285 if (!req
->r_result
) {
2286 lreq
->watch_valid_thru
= lreq
->ping_sent
;
2287 } else if (!lreq
->last_error
) {
2288 lreq
->last_error
= normalize_watch_error(req
->r_result
);
2289 queue_watch_error(lreq
);
2292 dout("lreq %p register_gen %u ignoring old pong %u\n", lreq
,
2293 lreq
->register_gen
, req
->r_ops
[0].watch
.gen
);
2296 mutex_unlock(&lreq
->lock
);
2300 static void send_linger_ping(struct ceph_osd_linger_request
*lreq
)
2302 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2303 struct ceph_osd_request
*req
= lreq
->ping_req
;
2304 struct ceph_osd_req_op
*op
= &req
->r_ops
[0];
2306 if (ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
)) {
2307 dout("%s PAUSERD\n", __func__
);
2311 lreq
->ping_sent
= jiffies
;
2312 dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n",
2313 __func__
, lreq
, lreq
->linger_id
, lreq
->ping_sent
,
2314 lreq
->register_gen
);
2317 cancel_linger_request(req
);
2319 request_reinit(req
);
2320 target_copy(&req
->r_t
, &lreq
->t
);
2322 WARN_ON(op
->op
!= CEPH_OSD_OP_WATCH
||
2323 op
->watch
.cookie
!= lreq
->linger_id
||
2324 op
->watch
.op
!= CEPH_OSD_WATCH_OP_PING
);
2325 op
->watch
.gen
= lreq
->register_gen
;
2326 req
->r_callback
= linger_ping_cb
;
2327 req
->r_priv
= linger_get(lreq
);
2328 req
->r_linger
= true;
2330 ceph_osdc_get_request(req
);
2331 account_request(req
);
2332 req
->r_tid
= atomic64_inc_return(&osdc
->last_tid
);
2333 link_request(lreq
->osd
, req
);
2337 static void linger_submit(struct ceph_osd_linger_request
*lreq
)
2339 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2340 struct ceph_osd
*osd
;
2342 calc_target(osdc
, &lreq
->t
, &lreq
->last_force_resend
, false);
2343 osd
= lookup_create_osd(osdc
, lreq
->t
.osd
, true);
2344 link_linger(osd
, lreq
);
2349 static void cancel_linger_map_check(struct ceph_osd_linger_request
*lreq
)
2351 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2352 struct ceph_osd_linger_request
*lookup_lreq
;
2354 verify_osdc_wrlocked(osdc
);
2356 lookup_lreq
= lookup_linger_mc(&osdc
->linger_map_checks
,
2361 WARN_ON(lookup_lreq
!= lreq
);
2362 erase_linger_mc(&osdc
->linger_map_checks
, lreq
);
2367 * @lreq has to be both registered and linked.
2369 static void __linger_cancel(struct ceph_osd_linger_request
*lreq
)
2371 if (lreq
->is_watch
&& lreq
->ping_req
->r_osd
)
2372 cancel_linger_request(lreq
->ping_req
);
2373 if (lreq
->reg_req
->r_osd
)
2374 cancel_linger_request(lreq
->reg_req
);
2375 cancel_linger_map_check(lreq
);
2376 unlink_linger(lreq
->osd
, lreq
);
2377 linger_unregister(lreq
);
2380 static void linger_cancel(struct ceph_osd_linger_request
*lreq
)
2382 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2384 down_write(&osdc
->lock
);
2385 if (__linger_registered(lreq
))
2386 __linger_cancel(lreq
);
2387 up_write(&osdc
->lock
);
2390 static void send_linger_map_check(struct ceph_osd_linger_request
*lreq
);
2392 static void check_linger_pool_dne(struct ceph_osd_linger_request
*lreq
)
2394 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2395 struct ceph_osdmap
*map
= osdc
->osdmap
;
2397 verify_osdc_wrlocked(osdc
);
2398 WARN_ON(!map
->epoch
);
2400 if (lreq
->register_gen
) {
2401 lreq
->map_dne_bound
= map
->epoch
;
2402 dout("%s lreq %p linger_id %llu pool disappeared\n", __func__
,
2403 lreq
, lreq
->linger_id
);
2405 dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n",
2406 __func__
, lreq
, lreq
->linger_id
, lreq
->map_dne_bound
,
2410 if (lreq
->map_dne_bound
) {
2411 if (map
->epoch
>= lreq
->map_dne_bound
) {
2412 /* we had a new enough map */
2413 pr_info("linger_id %llu pool does not exist\n",
2415 linger_reg_commit_complete(lreq
, -ENOENT
);
2416 __linger_cancel(lreq
);
2419 send_linger_map_check(lreq
);
2423 static void linger_map_check_cb(struct ceph_mon_generic_request
*greq
)
2425 struct ceph_osd_client
*osdc
= &greq
->monc
->client
->osdc
;
2426 struct ceph_osd_linger_request
*lreq
;
2427 u64 linger_id
= greq
->private_data
;
2429 WARN_ON(greq
->result
|| !greq
->u
.newest
);
2431 down_write(&osdc
->lock
);
2432 lreq
= lookup_linger_mc(&osdc
->linger_map_checks
, linger_id
);
2434 dout("%s linger_id %llu dne\n", __func__
, linger_id
);
2438 dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n",
2439 __func__
, lreq
, lreq
->linger_id
, lreq
->map_dne_bound
,
2441 if (!lreq
->map_dne_bound
)
2442 lreq
->map_dne_bound
= greq
->u
.newest
;
2443 erase_linger_mc(&osdc
->linger_map_checks
, lreq
);
2444 check_linger_pool_dne(lreq
);
2448 up_write(&osdc
->lock
);
2451 static void send_linger_map_check(struct ceph_osd_linger_request
*lreq
)
2453 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2454 struct ceph_osd_linger_request
*lookup_lreq
;
2457 verify_osdc_wrlocked(osdc
);
2459 lookup_lreq
= lookup_linger_mc(&osdc
->linger_map_checks
,
2462 WARN_ON(lookup_lreq
!= lreq
);
2467 insert_linger_mc(&osdc
->linger_map_checks
, lreq
);
2468 ret
= ceph_monc_get_version_async(&osdc
->client
->monc
, "osdmap",
2469 linger_map_check_cb
, lreq
->linger_id
);
2473 static int linger_reg_commit_wait(struct ceph_osd_linger_request
*lreq
)
2477 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2478 ret
= wait_for_completion_interruptible(&lreq
->reg_commit_wait
);
2479 return ret
?: lreq
->reg_commit_error
;
2482 static int linger_notify_finish_wait(struct ceph_osd_linger_request
*lreq
)
2486 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2487 ret
= wait_for_completion_interruptible(&lreq
->notify_finish_wait
);
2488 return ret
?: lreq
->notify_finish_error
;
2492 * Timeout callback, called every N seconds. When 1 or more OSD
2493 * requests has been active for more than N seconds, we send a keepalive
2494 * (tag + timestamp) to its OSD to ensure any communications channel
2495 * reset is detected.
2497 static void handle_timeout(struct work_struct
*work
)
2499 struct ceph_osd_client
*osdc
=
2500 container_of(work
, struct ceph_osd_client
, timeout_work
.work
);
2501 struct ceph_options
*opts
= osdc
->client
->options
;
2502 unsigned long cutoff
= jiffies
- opts
->osd_keepalive_timeout
;
2503 LIST_HEAD(slow_osds
);
2504 struct rb_node
*n
, *p
;
2506 dout("%s osdc %p\n", __func__
, osdc
);
2507 down_write(&osdc
->lock
);
2510 * ping osds that are a bit slow. this ensures that if there
2511 * is a break in the TCP connection we will notice, and reopen
2512 * a connection with that osd (from the fault callback).
2514 for (n
= rb_first(&osdc
->osds
); n
; n
= rb_next(n
)) {
2515 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
2518 for (p
= rb_first(&osd
->o_requests
); p
; p
= rb_next(p
)) {
2519 struct ceph_osd_request
*req
=
2520 rb_entry(p
, struct ceph_osd_request
, r_node
);
2522 if (time_before(req
->r_stamp
, cutoff
)) {
2523 dout(" req %p tid %llu on osd%d is laggy\n",
2524 req
, req
->r_tid
, osd
->o_osd
);
2528 for (p
= rb_first(&osd
->o_linger_requests
); p
; p
= rb_next(p
)) {
2529 struct ceph_osd_linger_request
*lreq
=
2530 rb_entry(p
, struct ceph_osd_linger_request
, node
);
2532 dout(" lreq %p linger_id %llu is served by osd%d\n",
2533 lreq
, lreq
->linger_id
, osd
->o_osd
);
2536 mutex_lock(&lreq
->lock
);
2537 if (lreq
->is_watch
&& lreq
->committed
&& !lreq
->last_error
)
2538 send_linger_ping(lreq
);
2539 mutex_unlock(&lreq
->lock
);
2543 list_move_tail(&osd
->o_keepalive_item
, &slow_osds
);
2546 if (atomic_read(&osdc
->num_homeless
) || !list_empty(&slow_osds
))
2547 maybe_request_map(osdc
);
2549 while (!list_empty(&slow_osds
)) {
2550 struct ceph_osd
*osd
= list_first_entry(&slow_osds
,
2553 list_del_init(&osd
->o_keepalive_item
);
2554 ceph_con_keepalive(&osd
->o_con
);
2557 up_write(&osdc
->lock
);
2558 schedule_delayed_work(&osdc
->timeout_work
,
2559 osdc
->client
->options
->osd_keepalive_timeout
);
2562 static void handle_osds_timeout(struct work_struct
*work
)
2564 struct ceph_osd_client
*osdc
=
2565 container_of(work
, struct ceph_osd_client
,
2566 osds_timeout_work
.work
);
2567 unsigned long delay
= osdc
->client
->options
->osd_idle_ttl
/ 4;
2568 struct ceph_osd
*osd
, *nosd
;
2570 dout("%s osdc %p\n", __func__
, osdc
);
2571 down_write(&osdc
->lock
);
2572 list_for_each_entry_safe(osd
, nosd
, &osdc
->osd_lru
, o_osd_lru
) {
2573 if (time_before(jiffies
, osd
->lru_ttl
))
2576 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_requests
));
2577 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_linger_requests
));
2581 up_write(&osdc
->lock
);
2582 schedule_delayed_work(&osdc
->osds_timeout_work
,
2583 round_jiffies_relative(delay
));
2586 static int ceph_oloc_decode(void **p
, void *end
,
2587 struct ceph_object_locator
*oloc
)
2589 u8 struct_v
, struct_cv
;
2594 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
2595 struct_v
= ceph_decode_8(p
);
2596 struct_cv
= ceph_decode_8(p
);
2598 pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
2599 struct_v
, struct_cv
);
2602 if (struct_cv
> 6) {
2603 pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
2604 struct_v
, struct_cv
);
2607 len
= ceph_decode_32(p
);
2608 ceph_decode_need(p
, end
, len
, e_inval
);
2609 struct_end
= *p
+ len
;
2611 oloc
->pool
= ceph_decode_64(p
);
2612 *p
+= 4; /* skip preferred */
2614 len
= ceph_decode_32(p
);
2616 pr_warn("ceph_object_locator::key is set\n");
2620 if (struct_v
>= 5) {
2621 bool changed
= false;
2623 len
= ceph_decode_32(p
);
2625 ceph_decode_need(p
, end
, len
, e_inval
);
2626 if (!oloc
->pool_ns
||
2627 ceph_compare_string(oloc
->pool_ns
, *p
, len
))
2635 /* redirect changes namespace */
2636 pr_warn("ceph_object_locator::nspace is changed\n");
2641 if (struct_v
>= 6) {
2642 s64 hash
= ceph_decode_64(p
);
2644 pr_warn("ceph_object_locator::hash is set\n");
2659 static int ceph_redirect_decode(void **p
, void *end
,
2660 struct ceph_request_redirect
*redir
)
2662 u8 struct_v
, struct_cv
;
2667 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
2668 struct_v
= ceph_decode_8(p
);
2669 struct_cv
= ceph_decode_8(p
);
2670 if (struct_cv
> 1) {
2671 pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
2672 struct_v
, struct_cv
);
2675 len
= ceph_decode_32(p
);
2676 ceph_decode_need(p
, end
, len
, e_inval
);
2677 struct_end
= *p
+ len
;
2679 ret
= ceph_oloc_decode(p
, end
, &redir
->oloc
);
2683 len
= ceph_decode_32(p
);
2685 pr_warn("ceph_request_redirect::object_name is set\n");
2689 len
= ceph_decode_32(p
);
2690 *p
+= len
; /* skip osd_instructions */
2702 struct MOSDOpReply
{
2703 struct ceph_pg pgid
;
2708 u32 outdata_len
[CEPH_OSD_MAX_OPS
];
2709 s32 rval
[CEPH_OSD_MAX_OPS
];
2711 struct ceph_eversion replay_version
;
2713 struct ceph_request_redirect redirect
;
2716 static int decode_MOSDOpReply(const struct ceph_msg
*msg
, struct MOSDOpReply
*m
)
2718 void *p
= msg
->front
.iov_base
;
2719 void *const end
= p
+ msg
->front
.iov_len
;
2720 u16 version
= le16_to_cpu(msg
->hdr
.version
);
2721 struct ceph_eversion bad_replay_version
;
2727 ceph_decode_32_safe(&p
, end
, len
, e_inval
);
2728 ceph_decode_need(&p
, end
, len
, e_inval
);
2729 p
+= len
; /* skip oid */
2731 ret
= ceph_decode_pgid(&p
, end
, &m
->pgid
);
2735 ceph_decode_64_safe(&p
, end
, m
->flags
, e_inval
);
2736 ceph_decode_32_safe(&p
, end
, m
->result
, e_inval
);
2737 ceph_decode_need(&p
, end
, sizeof(bad_replay_version
), e_inval
);
2738 memcpy(&bad_replay_version
, p
, sizeof(bad_replay_version
));
2739 p
+= sizeof(bad_replay_version
);
2740 ceph_decode_32_safe(&p
, end
, m
->epoch
, e_inval
);
2742 ceph_decode_32_safe(&p
, end
, m
->num_ops
, e_inval
);
2743 if (m
->num_ops
> ARRAY_SIZE(m
->outdata_len
))
2746 ceph_decode_need(&p
, end
, m
->num_ops
* sizeof(struct ceph_osd_op
),
2748 for (i
= 0; i
< m
->num_ops
; i
++) {
2749 struct ceph_osd_op
*op
= p
;
2751 m
->outdata_len
[i
] = le32_to_cpu(op
->payload_len
);
2755 ceph_decode_32_safe(&p
, end
, m
->retry_attempt
, e_inval
);
2756 for (i
= 0; i
< m
->num_ops
; i
++)
2757 ceph_decode_32_safe(&p
, end
, m
->rval
[i
], e_inval
);
2760 ceph_decode_need(&p
, end
, sizeof(m
->replay_version
), e_inval
);
2761 memcpy(&m
->replay_version
, p
, sizeof(m
->replay_version
));
2762 p
+= sizeof(m
->replay_version
);
2763 ceph_decode_64_safe(&p
, end
, m
->user_version
, e_inval
);
2765 m
->replay_version
= bad_replay_version
; /* struct */
2766 m
->user_version
= le64_to_cpu(m
->replay_version
.version
);
2771 ceph_decode_8_safe(&p
, end
, decode_redir
, e_inval
);
2779 ret
= ceph_redirect_decode(&p
, end
, &m
->redirect
);
2783 ceph_oloc_init(&m
->redirect
.oloc
);
2793 * We are done with @req if
2794 * - @m is a safe reply, or
2795 * - @m is an unsafe reply and we didn't want a safe one
2797 static bool done_request(const struct ceph_osd_request
*req
,
2798 const struct MOSDOpReply
*m
)
2800 return (m
->result
< 0 ||
2801 (m
->flags
& CEPH_OSD_FLAG_ONDISK
) ||
2802 !(req
->r_flags
& CEPH_OSD_FLAG_ONDISK
));
2806 * handle osd op reply. either call the callback if it is specified,
2807 * or do the completion to wake up the waiting thread.
2809 * ->r_unsafe_callback is set? yes no
2811 * first reply is OK (needed r_cb/r_completion, r_cb/r_completion,
2812 * any or needed/got safe) r_safe_completion r_safe_completion
2814 * first reply is unsafe r_unsafe_cb(true) (nothing)
2816 * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion,
2817 * r_safe_completion r_safe_completion
2819 static void handle_reply(struct ceph_osd
*osd
, struct ceph_msg
*msg
)
2821 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2822 struct ceph_osd_request
*req
;
2823 struct MOSDOpReply m
;
2824 u64 tid
= le64_to_cpu(msg
->hdr
.tid
);
2830 dout("%s msg %p tid %llu\n", __func__
, msg
, tid
);
2832 down_read(&osdc
->lock
);
2833 if (!osd_registered(osd
)) {
2834 dout("%s osd%d unknown\n", __func__
, osd
->o_osd
);
2835 goto out_unlock_osdc
;
2837 WARN_ON(osd
->o_osd
!= le64_to_cpu(msg
->hdr
.src
.num
));
2839 mutex_lock(&osd
->lock
);
2840 req
= lookup_request(&osd
->o_requests
, tid
);
2842 dout("%s osd%d tid %llu unknown\n", __func__
, osd
->o_osd
, tid
);
2843 goto out_unlock_session
;
2846 m
.redirect
.oloc
.pool_ns
= req
->r_t
.target_oloc
.pool_ns
;
2847 ret
= decode_MOSDOpReply(msg
, &m
);
2848 m
.redirect
.oloc
.pool_ns
= NULL
;
2850 pr_err("failed to decode MOSDOpReply for tid %llu: %d\n",
2855 dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n",
2856 __func__
, req
, req
->r_tid
, m
.flags
, m
.pgid
.pool
, m
.pgid
.seed
,
2857 m
.epoch
, m
.retry_attempt
, le32_to_cpu(m
.replay_version
.epoch
),
2858 le64_to_cpu(m
.replay_version
.version
), m
.user_version
);
2860 if (m
.retry_attempt
>= 0) {
2861 if (m
.retry_attempt
!= req
->r_attempts
- 1) {
2862 dout("req %p tid %llu retry_attempt %d != %d, ignoring\n",
2863 req
, req
->r_tid
, m
.retry_attempt
,
2864 req
->r_attempts
- 1);
2865 goto out_unlock_session
;
2868 WARN_ON(1); /* MOSDOpReply v4 is assumed */
2871 if (!ceph_oloc_empty(&m
.redirect
.oloc
)) {
2872 dout("req %p tid %llu redirect pool %lld\n", req
, req
->r_tid
,
2873 m
.redirect
.oloc
.pool
);
2874 unlink_request(osd
, req
);
2875 mutex_unlock(&osd
->lock
);
2878 * Not ceph_oloc_copy() - changing pool_ns is not
2881 req
->r_t
.target_oloc
.pool
= m
.redirect
.oloc
.pool
;
2882 req
->r_flags
|= CEPH_OSD_FLAG_REDIRECTED
;
2884 __submit_request(req
, false);
2885 goto out_unlock_osdc
;
2888 if (m
.num_ops
!= req
->r_num_ops
) {
2889 pr_err("num_ops %d != %d for tid %llu\n", m
.num_ops
,
2890 req
->r_num_ops
, req
->r_tid
);
2893 for (i
= 0; i
< req
->r_num_ops
; i
++) {
2894 dout(" req %p tid %llu op %d rval %d len %u\n", req
,
2895 req
->r_tid
, i
, m
.rval
[i
], m
.outdata_len
[i
]);
2896 req
->r_ops
[i
].rval
= m
.rval
[i
];
2897 req
->r_ops
[i
].outdata_len
= m
.outdata_len
[i
];
2898 data_len
+= m
.outdata_len
[i
];
2900 if (data_len
!= le32_to_cpu(msg
->hdr
.data_len
)) {
2901 pr_err("sum of lens %u != %u for tid %llu\n", data_len
,
2902 le32_to_cpu(msg
->hdr
.data_len
), req
->r_tid
);
2905 dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__
,
2906 req
, req
->r_tid
, req
->r_got_reply
, m
.result
, data_len
);
2908 already_acked
= req
->r_got_reply
;
2909 if (!already_acked
) {
2910 req
->r_result
= m
.result
?: data_len
;
2911 req
->r_replay_version
= m
.replay_version
; /* struct */
2912 req
->r_got_reply
= true;
2913 } else if (!(m
.flags
& CEPH_OSD_FLAG_ONDISK
)) {
2914 dout("req %p tid %llu dup ack\n", req
, req
->r_tid
);
2915 goto out_unlock_session
;
2918 if (done_request(req
, &m
)) {
2919 __finish_request(req
);
2920 if (req
->r_linger
) {
2921 WARN_ON(req
->r_unsafe_callback
);
2922 dout("req %p tid %llu cb (locked)\n", req
, req
->r_tid
);
2923 __complete_request(req
);
2927 mutex_unlock(&osd
->lock
);
2928 up_read(&osdc
->lock
);
2930 if (done_request(req
, &m
)) {
2931 if (already_acked
&& req
->r_unsafe_callback
) {
2932 dout("req %p tid %llu safe-cb\n", req
, req
->r_tid
);
2933 req
->r_unsafe_callback(req
, false);
2934 } else if (!req
->r_linger
) {
2935 dout("req %p tid %llu cb\n", req
, req
->r_tid
);
2936 __complete_request(req
);
2938 if (m
.flags
& CEPH_OSD_FLAG_ONDISK
)
2939 complete_all(&req
->r_safe_completion
);
2940 ceph_osdc_put_request(req
);
2942 if (req
->r_unsafe_callback
) {
2943 dout("req %p tid %llu unsafe-cb\n", req
, req
->r_tid
);
2944 req
->r_unsafe_callback(req
, true);
2953 complete_request(req
, -EIO
);
2955 mutex_unlock(&osd
->lock
);
2957 up_read(&osdc
->lock
);
2960 static void set_pool_was_full(struct ceph_osd_client
*osdc
)
2964 for (n
= rb_first(&osdc
->osdmap
->pg_pools
); n
; n
= rb_next(n
)) {
2965 struct ceph_pg_pool_info
*pi
=
2966 rb_entry(n
, struct ceph_pg_pool_info
, node
);
2968 pi
->was_full
= __pool_full(pi
);
2972 static bool pool_cleared_full(struct ceph_osd_client
*osdc
, s64 pool_id
)
2974 struct ceph_pg_pool_info
*pi
;
2976 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pool_id
);
2980 return pi
->was_full
&& !__pool_full(pi
);
2983 static enum calc_target_result
2984 recalc_linger_target(struct ceph_osd_linger_request
*lreq
)
2986 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2987 enum calc_target_result ct_res
;
2989 ct_res
= calc_target(osdc
, &lreq
->t
, &lreq
->last_force_resend
, true);
2990 if (ct_res
== CALC_TARGET_NEED_RESEND
) {
2991 struct ceph_osd
*osd
;
2993 osd
= lookup_create_osd(osdc
, lreq
->t
.osd
, true);
2994 if (osd
!= lreq
->osd
) {
2995 unlink_linger(lreq
->osd
, lreq
);
2996 link_linger(osd
, lreq
);
3004 * Requeue requests whose mapping to an OSD has changed.
3006 static void scan_requests(struct ceph_osd
*osd
,
3009 bool check_pool_cleared_full
,
3010 struct rb_root
*need_resend
,
3011 struct list_head
*need_resend_linger
)
3013 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
3015 bool force_resend_writes
;
3017 for (n
= rb_first(&osd
->o_linger_requests
); n
; ) {
3018 struct ceph_osd_linger_request
*lreq
=
3019 rb_entry(n
, struct ceph_osd_linger_request
, node
);
3020 enum calc_target_result ct_res
;
3022 n
= rb_next(n
); /* recalc_linger_target() */
3024 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
,
3026 ct_res
= recalc_linger_target(lreq
);
3028 case CALC_TARGET_NO_ACTION
:
3029 force_resend_writes
= cleared_full
||
3030 (check_pool_cleared_full
&&
3031 pool_cleared_full(osdc
, lreq
->t
.base_oloc
.pool
));
3032 if (!force_resend
&& !force_resend_writes
)
3036 case CALC_TARGET_NEED_RESEND
:
3037 cancel_linger_map_check(lreq
);
3039 * scan_requests() for the previous epoch(s)
3040 * may have already added it to the list, since
3041 * it's not unlinked here.
3043 if (list_empty(&lreq
->scan_item
))
3044 list_add_tail(&lreq
->scan_item
, need_resend_linger
);
3046 case CALC_TARGET_POOL_DNE
:
3047 check_linger_pool_dne(lreq
);
3052 for (n
= rb_first(&osd
->o_requests
); n
; ) {
3053 struct ceph_osd_request
*req
=
3054 rb_entry(n
, struct ceph_osd_request
, r_node
);
3055 enum calc_target_result ct_res
;
3057 n
= rb_next(n
); /* unlink_request(), check_pool_dne() */
3059 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
3060 ct_res
= calc_target(osdc
, &req
->r_t
,
3061 &req
->r_last_force_resend
, false);
3063 case CALC_TARGET_NO_ACTION
:
3064 force_resend_writes
= cleared_full
||
3065 (check_pool_cleared_full
&&
3066 pool_cleared_full(osdc
, req
->r_t
.base_oloc
.pool
));
3067 if (!force_resend
&&
3068 (!(req
->r_flags
& CEPH_OSD_FLAG_WRITE
) ||
3069 !force_resend_writes
))
3073 case CALC_TARGET_NEED_RESEND
:
3074 cancel_map_check(req
);
3075 unlink_request(osd
, req
);
3076 insert_request(need_resend
, req
);
3078 case CALC_TARGET_POOL_DNE
:
3079 check_pool_dne(req
);
3085 static int handle_one_map(struct ceph_osd_client
*osdc
,
3086 void *p
, void *end
, bool incremental
,
3087 struct rb_root
*need_resend
,
3088 struct list_head
*need_resend_linger
)
3090 struct ceph_osdmap
*newmap
;
3092 bool skipped_map
= false;
3095 was_full
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
);
3096 set_pool_was_full(osdc
);
3099 newmap
= osdmap_apply_incremental(&p
, end
, osdc
->osdmap
);
3101 newmap
= ceph_osdmap_decode(&p
, end
);
3103 return PTR_ERR(newmap
);
3105 if (newmap
!= osdc
->osdmap
) {
3107 * Preserve ->was_full before destroying the old map.
3108 * For pools that weren't in the old map, ->was_full
3111 for (n
= rb_first(&newmap
->pg_pools
); n
; n
= rb_next(n
)) {
3112 struct ceph_pg_pool_info
*pi
=
3113 rb_entry(n
, struct ceph_pg_pool_info
, node
);
3114 struct ceph_pg_pool_info
*old_pi
;
3116 old_pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pi
->id
);
3118 pi
->was_full
= old_pi
->was_full
;
3120 WARN_ON(pi
->was_full
);
3123 if (osdc
->osdmap
->epoch
&&
3124 osdc
->osdmap
->epoch
+ 1 < newmap
->epoch
) {
3125 WARN_ON(incremental
);
3129 ceph_osdmap_destroy(osdc
->osdmap
);
3130 osdc
->osdmap
= newmap
;
3133 was_full
&= !ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
);
3134 scan_requests(&osdc
->homeless_osd
, skipped_map
, was_full
, true,
3135 need_resend
, need_resend_linger
);
3137 for (n
= rb_first(&osdc
->osds
); n
; ) {
3138 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
3140 n
= rb_next(n
); /* close_osd() */
3142 scan_requests(osd
, skipped_map
, was_full
, true, need_resend
,
3143 need_resend_linger
);
3144 if (!ceph_osd_is_up(osdc
->osdmap
, osd
->o_osd
) ||
3145 memcmp(&osd
->o_con
.peer_addr
,
3146 ceph_osd_addr(osdc
->osdmap
, osd
->o_osd
),
3147 sizeof(struct ceph_entity_addr
)))
3154 static void kick_requests(struct ceph_osd_client
*osdc
,
3155 struct rb_root
*need_resend
,
3156 struct list_head
*need_resend_linger
)
3158 struct ceph_osd_linger_request
*lreq
, *nlreq
;
3161 for (n
= rb_first(need_resend
); n
; ) {
3162 struct ceph_osd_request
*req
=
3163 rb_entry(n
, struct ceph_osd_request
, r_node
);
3164 struct ceph_osd
*osd
;
3167 erase_request(need_resend
, req
); /* before link_request() */
3169 WARN_ON(req
->r_osd
);
3170 calc_target(osdc
, &req
->r_t
, NULL
, false);
3171 osd
= lookup_create_osd(osdc
, req
->r_t
.osd
, true);
3172 link_request(osd
, req
);
3173 if (!req
->r_linger
) {
3174 if (!osd_homeless(osd
) && !req
->r_t
.paused
)
3177 cancel_linger_request(req
);
3181 list_for_each_entry_safe(lreq
, nlreq
, need_resend_linger
, scan_item
) {
3182 if (!osd_homeless(lreq
->osd
))
3185 list_del_init(&lreq
->scan_item
);
3190 * Process updated osd map.
3192 * The message contains any number of incremental and full maps, normally
3193 * indicating some sort of topology change in the cluster. Kick requests
3194 * off to different OSDs as needed.
3196 void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
3198 void *p
= msg
->front
.iov_base
;
3199 void *const end
= p
+ msg
->front
.iov_len
;
3200 u32 nr_maps
, maplen
;
3202 struct ceph_fsid fsid
;
3203 struct rb_root need_resend
= RB_ROOT
;
3204 LIST_HEAD(need_resend_linger
);
3205 bool handled_incremental
= false;
3206 bool was_pauserd
, was_pausewr
;
3207 bool pauserd
, pausewr
;
3210 dout("%s have %u\n", __func__
, osdc
->osdmap
->epoch
);
3211 down_write(&osdc
->lock
);
3214 ceph_decode_need(&p
, end
, sizeof(fsid
), bad
);
3215 ceph_decode_copy(&p
, &fsid
, sizeof(fsid
));
3216 if (ceph_check_fsid(osdc
->client
, &fsid
) < 0)
3219 was_pauserd
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
);
3220 was_pausewr
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
) ||
3221 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
3222 have_pool_full(osdc
);
3224 /* incremental maps */
3225 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
3226 dout(" %d inc maps\n", nr_maps
);
3227 while (nr_maps
> 0) {
3228 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
3229 epoch
= ceph_decode_32(&p
);
3230 maplen
= ceph_decode_32(&p
);
3231 ceph_decode_need(&p
, end
, maplen
, bad
);
3232 if (osdc
->osdmap
->epoch
&&
3233 osdc
->osdmap
->epoch
+ 1 == epoch
) {
3234 dout("applying incremental map %u len %d\n",
3236 err
= handle_one_map(osdc
, p
, p
+ maplen
, true,
3237 &need_resend
, &need_resend_linger
);
3240 handled_incremental
= true;
3242 dout("ignoring incremental map %u len %d\n",
3248 if (handled_incremental
)
3252 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
3253 dout(" %d full maps\n", nr_maps
);
3255 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
3256 epoch
= ceph_decode_32(&p
);
3257 maplen
= ceph_decode_32(&p
);
3258 ceph_decode_need(&p
, end
, maplen
, bad
);
3260 dout("skipping non-latest full map %u len %d\n",
3262 } else if (osdc
->osdmap
->epoch
>= epoch
) {
3263 dout("skipping full map %u len %d, "
3264 "older than our %u\n", epoch
, maplen
,
3265 osdc
->osdmap
->epoch
);
3267 dout("taking full map %u len %d\n", epoch
, maplen
);
3268 err
= handle_one_map(osdc
, p
, p
+ maplen
, false,
3269 &need_resend
, &need_resend_linger
);
3279 * subscribe to subsequent osdmap updates if full to ensure
3280 * we find out when we are no longer full and stop returning
3283 pauserd
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSERD
);
3284 pausewr
= ceph_osdmap_flag(osdc
, CEPH_OSDMAP_PAUSEWR
) ||
3285 ceph_osdmap_flag(osdc
, CEPH_OSDMAP_FULL
) ||
3286 have_pool_full(osdc
);
3287 if (was_pauserd
|| was_pausewr
|| pauserd
|| pausewr
)
3288 maybe_request_map(osdc
);
3290 kick_requests(osdc
, &need_resend
, &need_resend_linger
);
3292 ceph_monc_got_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
3293 osdc
->osdmap
->epoch
);
3294 up_write(&osdc
->lock
);
3295 wake_up_all(&osdc
->client
->auth_wq
);
3299 pr_err("osdc handle_map corrupt msg\n");
3301 up_write(&osdc
->lock
);
3305 * Resubmit requests pending on the given osd.
3307 static void kick_osd_requests(struct ceph_osd
*osd
)
3311 for (n
= rb_first(&osd
->o_requests
); n
; ) {
3312 struct ceph_osd_request
*req
=
3313 rb_entry(n
, struct ceph_osd_request
, r_node
);
3315 n
= rb_next(n
); /* cancel_linger_request() */
3317 if (!req
->r_linger
) {
3318 if (!req
->r_t
.paused
)
3321 cancel_linger_request(req
);
3324 for (n
= rb_first(&osd
->o_linger_requests
); n
; n
= rb_next(n
)) {
3325 struct ceph_osd_linger_request
*lreq
=
3326 rb_entry(n
, struct ceph_osd_linger_request
, node
);
3333 * If the osd connection drops, we need to resubmit all requests.
3335 static void osd_fault(struct ceph_connection
*con
)
3337 struct ceph_osd
*osd
= con
->private;
3338 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
3340 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
3342 down_write(&osdc
->lock
);
3343 if (!osd_registered(osd
)) {
3344 dout("%s osd%d unknown\n", __func__
, osd
->o_osd
);
3348 if (!reopen_osd(osd
))
3349 kick_osd_requests(osd
);
3350 maybe_request_map(osdc
);
3353 up_write(&osdc
->lock
);
3357 * Process osd watch notifications
3359 static void handle_watch_notify(struct ceph_osd_client
*osdc
,
3360 struct ceph_msg
*msg
)
3362 void *p
= msg
->front
.iov_base
;
3363 void *const end
= p
+ msg
->front
.iov_len
;
3364 struct ceph_osd_linger_request
*lreq
;
3365 struct linger_work
*lwork
;
3366 u8 proto_ver
, opcode
;
3367 u64 cookie
, notify_id
;
3368 u64 notifier_id
= 0;
3369 s32 return_code
= 0;
3370 void *payload
= NULL
;
3371 u32 payload_len
= 0;
3373 ceph_decode_8_safe(&p
, end
, proto_ver
, bad
);
3374 ceph_decode_8_safe(&p
, end
, opcode
, bad
);
3375 ceph_decode_64_safe(&p
, end
, cookie
, bad
);
3376 p
+= 8; /* skip ver */
3377 ceph_decode_64_safe(&p
, end
, notify_id
, bad
);
3379 if (proto_ver
>= 1) {
3380 ceph_decode_32_safe(&p
, end
, payload_len
, bad
);
3381 ceph_decode_need(&p
, end
, payload_len
, bad
);
3386 if (le16_to_cpu(msg
->hdr
.version
) >= 2)
3387 ceph_decode_32_safe(&p
, end
, return_code
, bad
);
3389 if (le16_to_cpu(msg
->hdr
.version
) >= 3)
3390 ceph_decode_64_safe(&p
, end
, notifier_id
, bad
);
3392 down_read(&osdc
->lock
);
3393 lreq
= lookup_linger_osdc(&osdc
->linger_requests
, cookie
);
3395 dout("%s opcode %d cookie %llu dne\n", __func__
, opcode
,
3397 goto out_unlock_osdc
;
3400 mutex_lock(&lreq
->lock
);
3401 dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__
,
3402 opcode
, cookie
, lreq
, lreq
->is_watch
);
3403 if (opcode
== CEPH_WATCH_EVENT_DISCONNECT
) {
3404 if (!lreq
->last_error
) {
3405 lreq
->last_error
= -ENOTCONN
;
3406 queue_watch_error(lreq
);
3408 } else if (!lreq
->is_watch
) {
3409 /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */
3410 if (lreq
->notify_id
&& lreq
->notify_id
!= notify_id
) {
3411 dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq
,
3412 lreq
->notify_id
, notify_id
);
3413 } else if (!completion_done(&lreq
->notify_finish_wait
)) {
3414 struct ceph_msg_data
*data
=
3415 list_first_entry_or_null(&msg
->data
,
3416 struct ceph_msg_data
,
3420 if (lreq
->preply_pages
) {
3421 WARN_ON(data
->type
!=
3422 CEPH_MSG_DATA_PAGES
);
3423 *lreq
->preply_pages
= data
->pages
;
3424 *lreq
->preply_len
= data
->length
;
3426 ceph_release_page_vector(data
->pages
,
3427 calc_pages_for(0, data
->length
));
3430 lreq
->notify_finish_error
= return_code
;
3431 complete_all(&lreq
->notify_finish_wait
);
3434 /* CEPH_WATCH_EVENT_NOTIFY */
3435 lwork
= lwork_alloc(lreq
, do_watch_notify
);
3437 pr_err("failed to allocate notify-lwork\n");
3438 goto out_unlock_lreq
;
3441 lwork
->notify
.notify_id
= notify_id
;
3442 lwork
->notify
.notifier_id
= notifier_id
;
3443 lwork
->notify
.payload
= payload
;
3444 lwork
->notify
.payload_len
= payload_len
;
3445 lwork
->notify
.msg
= ceph_msg_get(msg
);
3450 mutex_unlock(&lreq
->lock
);
3452 up_read(&osdc
->lock
);
3456 pr_err("osdc handle_watch_notify corrupt msg\n");
3460 * Register request, send initial attempt.
3462 int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
3463 struct ceph_osd_request
*req
,
3466 down_read(&osdc
->lock
);
3467 submit_request(req
, false);
3468 up_read(&osdc
->lock
);
3472 EXPORT_SYMBOL(ceph_osdc_start_request
);
3475 * Unregister a registered request. The request is not completed (i.e.
3476 * no callbacks or wakeups) - higher layers are supposed to know what
3477 * they are canceling.
3479 void ceph_osdc_cancel_request(struct ceph_osd_request
*req
)
3481 struct ceph_osd_client
*osdc
= req
->r_osdc
;
3483 down_write(&osdc
->lock
);
3485 cancel_request(req
);
3486 up_write(&osdc
->lock
);
3488 EXPORT_SYMBOL(ceph_osdc_cancel_request
);
3491 * @timeout: in jiffies, 0 means "wait forever"
3493 static int wait_request_timeout(struct ceph_osd_request
*req
,
3494 unsigned long timeout
)
3498 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
3499 left
= wait_for_completion_killable_timeout(&req
->r_completion
,
3500 ceph_timeout_jiffies(timeout
));
3502 left
= left
?: -ETIMEDOUT
;
3503 ceph_osdc_cancel_request(req
);
3505 /* kludge - need to to wake ceph_osdc_sync() */
3506 complete_all(&req
->r_safe_completion
);
3508 left
= req
->r_result
; /* completed */
3515 * wait for a request to complete
3517 int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
3518 struct ceph_osd_request
*req
)
3520 return wait_request_timeout(req
, 0);
3522 EXPORT_SYMBOL(ceph_osdc_wait_request
);
3525 * sync - wait for all in-flight requests to flush. avoid starvation.
3527 void ceph_osdc_sync(struct ceph_osd_client
*osdc
)
3529 struct rb_node
*n
, *p
;
3530 u64 last_tid
= atomic64_read(&osdc
->last_tid
);
3533 down_read(&osdc
->lock
);
3534 for (n
= rb_first(&osdc
->osds
); n
; n
= rb_next(n
)) {
3535 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
3537 mutex_lock(&osd
->lock
);
3538 for (p
= rb_first(&osd
->o_requests
); p
; p
= rb_next(p
)) {
3539 struct ceph_osd_request
*req
=
3540 rb_entry(p
, struct ceph_osd_request
, r_node
);
3542 if (req
->r_tid
> last_tid
)
3545 if (!(req
->r_flags
& CEPH_OSD_FLAG_WRITE
))
3548 ceph_osdc_get_request(req
);
3549 mutex_unlock(&osd
->lock
);
3550 up_read(&osdc
->lock
);
3551 dout("%s waiting on req %p tid %llu last_tid %llu\n",
3552 __func__
, req
, req
->r_tid
, last_tid
);
3553 wait_for_completion(&req
->r_safe_completion
);
3554 ceph_osdc_put_request(req
);
3558 mutex_unlock(&osd
->lock
);
3561 up_read(&osdc
->lock
);
3562 dout("%s done last_tid %llu\n", __func__
, last_tid
);
3564 EXPORT_SYMBOL(ceph_osdc_sync
);
3566 static struct ceph_osd_request
*
3567 alloc_linger_request(struct ceph_osd_linger_request
*lreq
)
3569 struct ceph_osd_request
*req
;
3571 req
= ceph_osdc_alloc_request(lreq
->osdc
, NULL
, 1, false, GFP_NOIO
);
3575 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
3576 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
3578 if (ceph_osdc_alloc_messages(req
, GFP_NOIO
)) {
3579 ceph_osdc_put_request(req
);
3587 * Returns a handle, caller owns a ref.
3589 struct ceph_osd_linger_request
*
3590 ceph_osdc_watch(struct ceph_osd_client
*osdc
,
3591 struct ceph_object_id
*oid
,
3592 struct ceph_object_locator
*oloc
,
3593 rados_watchcb2_t wcb
,
3594 rados_watcherrcb_t errcb
,
3597 struct ceph_osd_linger_request
*lreq
;
3600 lreq
= linger_alloc(osdc
);
3602 return ERR_PTR(-ENOMEM
);
3604 lreq
->is_watch
= true;
3606 lreq
->errcb
= errcb
;
3608 lreq
->watch_valid_thru
= jiffies
;
3610 ceph_oid_copy(&lreq
->t
.base_oid
, oid
);
3611 ceph_oloc_copy(&lreq
->t
.base_oloc
, oloc
);
3612 lreq
->t
.flags
= CEPH_OSD_FLAG_WRITE
| CEPH_OSD_FLAG_ONDISK
;
3613 lreq
->mtime
= CURRENT_TIME
;
3615 lreq
->reg_req
= alloc_linger_request(lreq
);
3616 if (!lreq
->reg_req
) {
3621 lreq
->ping_req
= alloc_linger_request(lreq
);
3622 if (!lreq
->ping_req
) {
3627 down_write(&osdc
->lock
);
3628 linger_register(lreq
); /* before osd_req_op_* */
3629 osd_req_op_watch_init(lreq
->reg_req
, 0, lreq
->linger_id
,
3630 CEPH_OSD_WATCH_OP_WATCH
);
3631 osd_req_op_watch_init(lreq
->ping_req
, 0, lreq
->linger_id
,
3632 CEPH_OSD_WATCH_OP_PING
);
3633 linger_submit(lreq
);
3634 up_write(&osdc
->lock
);
3636 ret
= linger_reg_commit_wait(lreq
);
3638 linger_cancel(lreq
);
3646 return ERR_PTR(ret
);
3648 EXPORT_SYMBOL(ceph_osdc_watch
);
3653 * Times out after mount_timeout to preserve rbd unmap behaviour
3654 * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap
3655 * with mount_timeout").
3657 int ceph_osdc_unwatch(struct ceph_osd_client
*osdc
,
3658 struct ceph_osd_linger_request
*lreq
)
3660 struct ceph_options
*opts
= osdc
->client
->options
;
3661 struct ceph_osd_request
*req
;
3664 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3668 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
3669 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
3670 req
->r_flags
= CEPH_OSD_FLAG_WRITE
| CEPH_OSD_FLAG_ONDISK
;
3671 req
->r_mtime
= CURRENT_TIME
;
3672 osd_req_op_watch_init(req
, 0, lreq
->linger_id
,
3673 CEPH_OSD_WATCH_OP_UNWATCH
);
3675 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3679 ceph_osdc_start_request(osdc
, req
, false);
3680 linger_cancel(lreq
);
3682 ret
= wait_request_timeout(req
, opts
->mount_timeout
);
3685 ceph_osdc_put_request(req
);
3688 EXPORT_SYMBOL(ceph_osdc_unwatch
);
3690 static int osd_req_op_notify_ack_init(struct ceph_osd_request
*req
, int which
,
3691 u64 notify_id
, u64 cookie
, void *payload
,
3694 struct ceph_osd_req_op
*op
;
3695 struct ceph_pagelist
*pl
;
3698 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_NOTIFY_ACK
, 0);
3700 pl
= kmalloc(sizeof(*pl
), GFP_NOIO
);
3704 ceph_pagelist_init(pl
);
3705 ret
= ceph_pagelist_encode_64(pl
, notify_id
);
3706 ret
|= ceph_pagelist_encode_64(pl
, cookie
);
3708 ret
|= ceph_pagelist_encode_32(pl
, payload_len
);
3709 ret
|= ceph_pagelist_append(pl
, payload
, payload_len
);
3711 ret
|= ceph_pagelist_encode_32(pl
, 0);
3714 ceph_pagelist_release(pl
);
3718 ceph_osd_data_pagelist_init(&op
->notify_ack
.request_data
, pl
);
3719 op
->indata_len
= pl
->length
;
3723 int ceph_osdc_notify_ack(struct ceph_osd_client
*osdc
,
3724 struct ceph_object_id
*oid
,
3725 struct ceph_object_locator
*oloc
,
3731 struct ceph_osd_request
*req
;
3734 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3738 ceph_oid_copy(&req
->r_base_oid
, oid
);
3739 ceph_oloc_copy(&req
->r_base_oloc
, oloc
);
3740 req
->r_flags
= CEPH_OSD_FLAG_READ
;
3742 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3746 ret
= osd_req_op_notify_ack_init(req
, 0, notify_id
, cookie
, payload
,
3751 ceph_osdc_start_request(osdc
, req
, false);
3752 ret
= ceph_osdc_wait_request(osdc
, req
);
3755 ceph_osdc_put_request(req
);
3758 EXPORT_SYMBOL(ceph_osdc_notify_ack
);
3760 static int osd_req_op_notify_init(struct ceph_osd_request
*req
, int which
,
3761 u64 cookie
, u32 prot_ver
, u32 timeout
,
3762 void *payload
, size_t payload_len
)
3764 struct ceph_osd_req_op
*op
;
3765 struct ceph_pagelist
*pl
;
3768 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_NOTIFY
, 0);
3769 op
->notify
.cookie
= cookie
;
3771 pl
= kmalloc(sizeof(*pl
), GFP_NOIO
);
3775 ceph_pagelist_init(pl
);
3776 ret
= ceph_pagelist_encode_32(pl
, 1); /* prot_ver */
3777 ret
|= ceph_pagelist_encode_32(pl
, timeout
);
3778 ret
|= ceph_pagelist_encode_32(pl
, payload_len
);
3779 ret
|= ceph_pagelist_append(pl
, payload
, payload_len
);
3781 ceph_pagelist_release(pl
);
3785 ceph_osd_data_pagelist_init(&op
->notify
.request_data
, pl
);
3786 op
->indata_len
= pl
->length
;
3791 * @timeout: in seconds
3793 * @preply_{pages,len} are initialized both on success and error.
3794 * The caller is responsible for:
3796 * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len))
3798 int ceph_osdc_notify(struct ceph_osd_client
*osdc
,
3799 struct ceph_object_id
*oid
,
3800 struct ceph_object_locator
*oloc
,
3804 struct page
***preply_pages
,
3807 struct ceph_osd_linger_request
*lreq
;
3808 struct page
**pages
;
3813 *preply_pages
= NULL
;
3817 lreq
= linger_alloc(osdc
);
3821 lreq
->preply_pages
= preply_pages
;
3822 lreq
->preply_len
= preply_len
;
3824 ceph_oid_copy(&lreq
->t
.base_oid
, oid
);
3825 ceph_oloc_copy(&lreq
->t
.base_oloc
, oloc
);
3826 lreq
->t
.flags
= CEPH_OSD_FLAG_READ
;
3828 lreq
->reg_req
= alloc_linger_request(lreq
);
3829 if (!lreq
->reg_req
) {
3835 pages
= ceph_alloc_page_vector(1, GFP_NOIO
);
3836 if (IS_ERR(pages
)) {
3837 ret
= PTR_ERR(pages
);
3841 down_write(&osdc
->lock
);
3842 linger_register(lreq
); /* before osd_req_op_* */
3843 ret
= osd_req_op_notify_init(lreq
->reg_req
, 0, lreq
->linger_id
, 1,
3844 timeout
, payload
, payload_len
);
3846 linger_unregister(lreq
);
3847 up_write(&osdc
->lock
);
3848 ceph_release_page_vector(pages
, 1);
3851 ceph_osd_data_pages_init(osd_req_op_data(lreq
->reg_req
, 0, notify
,
3853 pages
, PAGE_SIZE
, 0, false, true);
3854 linger_submit(lreq
);
3855 up_write(&osdc
->lock
);
3857 ret
= linger_reg_commit_wait(lreq
);
3859 ret
= linger_notify_finish_wait(lreq
);
3861 dout("lreq %p failed to initiate notify %d\n", lreq
, ret
);
3863 linger_cancel(lreq
);
3868 EXPORT_SYMBOL(ceph_osdc_notify
);
3871 * Return the number of milliseconds since the watch was last
3872 * confirmed, or an error. If there is an error, the watch is no
3873 * longer valid, and should be destroyed with ceph_osdc_unwatch().
3875 int ceph_osdc_watch_check(struct ceph_osd_client
*osdc
,
3876 struct ceph_osd_linger_request
*lreq
)
3878 unsigned long stamp
, age
;
3881 down_read(&osdc
->lock
);
3882 mutex_lock(&lreq
->lock
);
3883 stamp
= lreq
->watch_valid_thru
;
3884 if (!list_empty(&lreq
->pending_lworks
)) {
3885 struct linger_work
*lwork
=
3886 list_first_entry(&lreq
->pending_lworks
,
3890 if (time_before(lwork
->queued_stamp
, stamp
))
3891 stamp
= lwork
->queued_stamp
;
3893 age
= jiffies
- stamp
;
3894 dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__
,
3895 lreq
, lreq
->linger_id
, age
, lreq
->last_error
);
3896 /* we are truncating to msecs, so return a safe upper bound */
3897 ret
= lreq
->last_error
?: 1 + jiffies_to_msecs(age
);
3899 mutex_unlock(&lreq
->lock
);
3900 up_read(&osdc
->lock
);
3904 static int decode_watcher(void **p
, void *end
, struct ceph_watch_item
*item
)
3910 ret
= ceph_start_decoding(p
, end
, 2, "watch_item_t",
3911 &struct_v
, &struct_len
);
3915 ceph_decode_copy(p
, &item
->name
, sizeof(item
->name
));
3916 item
->cookie
= ceph_decode_64(p
);
3917 *p
+= 4; /* skip timeout_seconds */
3918 if (struct_v
>= 2) {
3919 ceph_decode_copy(p
, &item
->addr
, sizeof(item
->addr
));
3920 ceph_decode_addr(&item
->addr
);
3923 dout("%s %s%llu cookie %llu addr %s\n", __func__
,
3924 ENTITY_NAME(item
->name
), item
->cookie
,
3925 ceph_pr_addr(&item
->addr
.in_addr
));
3929 static int decode_watchers(void **p
, void *end
,
3930 struct ceph_watch_item
**watchers
,
3938 ret
= ceph_start_decoding(p
, end
, 1, "obj_list_watch_response_t",
3939 &struct_v
, &struct_len
);
3943 *num_watchers
= ceph_decode_32(p
);
3944 *watchers
= kcalloc(*num_watchers
, sizeof(**watchers
), GFP_NOIO
);
3948 for (i
= 0; i
< *num_watchers
; i
++) {
3949 ret
= decode_watcher(p
, end
, *watchers
+ i
);
3960 * On success, the caller is responsible for:
3964 int ceph_osdc_list_watchers(struct ceph_osd_client
*osdc
,
3965 struct ceph_object_id
*oid
,
3966 struct ceph_object_locator
*oloc
,
3967 struct ceph_watch_item
**watchers
,
3970 struct ceph_osd_request
*req
;
3971 struct page
**pages
;
3974 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3978 ceph_oid_copy(&req
->r_base_oid
, oid
);
3979 ceph_oloc_copy(&req
->r_base_oloc
, oloc
);
3980 req
->r_flags
= CEPH_OSD_FLAG_READ
;
3982 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3986 pages
= ceph_alloc_page_vector(1, GFP_NOIO
);
3987 if (IS_ERR(pages
)) {
3988 ret
= PTR_ERR(pages
);
3992 osd_req_op_init(req
, 0, CEPH_OSD_OP_LIST_WATCHERS
, 0);
3993 ceph_osd_data_pages_init(osd_req_op_data(req
, 0, list_watchers
,
3995 pages
, PAGE_SIZE
, 0, false, true);
3997 ceph_osdc_start_request(osdc
, req
, false);
3998 ret
= ceph_osdc_wait_request(osdc
, req
);
4000 void *p
= page_address(pages
[0]);
4001 void *const end
= p
+ req
->r_ops
[0].outdata_len
;
4003 ret
= decode_watchers(&p
, end
, watchers
, num_watchers
);
4007 ceph_osdc_put_request(req
);
4010 EXPORT_SYMBOL(ceph_osdc_list_watchers
);
4013 * Call all pending notify callbacks - for use after a watch is
4014 * unregistered, to make sure no more callbacks for it will be invoked
4016 void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
)
4018 dout("%s osdc %p\n", __func__
, osdc
);
4019 flush_workqueue(osdc
->notify_wq
);
4021 EXPORT_SYMBOL(ceph_osdc_flush_notifies
);
4023 void ceph_osdc_maybe_request_map(struct ceph_osd_client
*osdc
)
4025 down_read(&osdc
->lock
);
4026 maybe_request_map(osdc
);
4027 up_read(&osdc
->lock
);
4029 EXPORT_SYMBOL(ceph_osdc_maybe_request_map
);
4032 * Execute an OSD class method on an object.
4034 * @flags: CEPH_OSD_FLAG_*
4035 * @resp_len: out param for reply length
4037 int ceph_osdc_call(struct ceph_osd_client
*osdc
,
4038 struct ceph_object_id
*oid
,
4039 struct ceph_object_locator
*oloc
,
4040 const char *class, const char *method
,
4042 struct page
*req_page
, size_t req_len
,
4043 struct page
*resp_page
, size_t *resp_len
)
4045 struct ceph_osd_request
*req
;
4048 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
4052 ceph_oid_copy(&req
->r_base_oid
, oid
);
4053 ceph_oloc_copy(&req
->r_base_oloc
, oloc
);
4054 req
->r_flags
= flags
;
4056 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
4060 osd_req_op_cls_init(req
, 0, CEPH_OSD_OP_CALL
, class, method
);
4062 osd_req_op_cls_request_data_pages(req
, 0, &req_page
, req_len
,
4065 osd_req_op_cls_response_data_pages(req
, 0, &resp_page
,
4066 PAGE_SIZE
, 0, false, false);
4068 ceph_osdc_start_request(osdc
, req
, false);
4069 ret
= ceph_osdc_wait_request(osdc
, req
);
4071 ret
= req
->r_ops
[0].rval
;
4073 *resp_len
= req
->r_ops
[0].outdata_len
;
4077 ceph_osdc_put_request(req
);
4080 EXPORT_SYMBOL(ceph_osdc_call
);
4085 int ceph_osdc_init(struct ceph_osd_client
*osdc
, struct ceph_client
*client
)
4090 osdc
->client
= client
;
4091 init_rwsem(&osdc
->lock
);
4092 osdc
->osds
= RB_ROOT
;
4093 INIT_LIST_HEAD(&osdc
->osd_lru
);
4094 spin_lock_init(&osdc
->osd_lru_lock
);
4095 osd_init(&osdc
->homeless_osd
);
4096 osdc
->homeless_osd
.o_osdc
= osdc
;
4097 osdc
->homeless_osd
.o_osd
= CEPH_HOMELESS_OSD
;
4098 osdc
->last_linger_id
= CEPH_LINGER_ID_START
;
4099 osdc
->linger_requests
= RB_ROOT
;
4100 osdc
->map_checks
= RB_ROOT
;
4101 osdc
->linger_map_checks
= RB_ROOT
;
4102 INIT_DELAYED_WORK(&osdc
->timeout_work
, handle_timeout
);
4103 INIT_DELAYED_WORK(&osdc
->osds_timeout_work
, handle_osds_timeout
);
4106 osdc
->osdmap
= ceph_osdmap_alloc();
4110 osdc
->req_mempool
= mempool_create_slab_pool(10,
4111 ceph_osd_request_cache
);
4112 if (!osdc
->req_mempool
)
4115 err
= ceph_msgpool_init(&osdc
->msgpool_op
, CEPH_MSG_OSD_OP
,
4116 PAGE_SIZE
, 10, true, "osd_op");
4119 err
= ceph_msgpool_init(&osdc
->msgpool_op_reply
, CEPH_MSG_OSD_OPREPLY
,
4120 PAGE_SIZE
, 10, true, "osd_op_reply");
4125 osdc
->notify_wq
= create_singlethread_workqueue("ceph-watch-notify");
4126 if (!osdc
->notify_wq
)
4127 goto out_msgpool_reply
;
4129 schedule_delayed_work(&osdc
->timeout_work
,
4130 osdc
->client
->options
->osd_keepalive_timeout
);
4131 schedule_delayed_work(&osdc
->osds_timeout_work
,
4132 round_jiffies_relative(osdc
->client
->options
->osd_idle_ttl
));
4137 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
4139 ceph_msgpool_destroy(&osdc
->msgpool_op
);
4141 mempool_destroy(osdc
->req_mempool
);
4143 ceph_osdmap_destroy(osdc
->osdmap
);
4148 void ceph_osdc_stop(struct ceph_osd_client
*osdc
)
4150 flush_workqueue(osdc
->notify_wq
);
4151 destroy_workqueue(osdc
->notify_wq
);
4152 cancel_delayed_work_sync(&osdc
->timeout_work
);
4153 cancel_delayed_work_sync(&osdc
->osds_timeout_work
);
4155 down_write(&osdc
->lock
);
4156 while (!RB_EMPTY_ROOT(&osdc
->osds
)) {
4157 struct ceph_osd
*osd
= rb_entry(rb_first(&osdc
->osds
),
4158 struct ceph_osd
, o_node
);
4161 up_write(&osdc
->lock
);
4162 WARN_ON(atomic_read(&osdc
->homeless_osd
.o_ref
) != 1);
4163 osd_cleanup(&osdc
->homeless_osd
);
4165 WARN_ON(!list_empty(&osdc
->osd_lru
));
4166 WARN_ON(!RB_EMPTY_ROOT(&osdc
->linger_requests
));
4167 WARN_ON(!RB_EMPTY_ROOT(&osdc
->map_checks
));
4168 WARN_ON(!RB_EMPTY_ROOT(&osdc
->linger_map_checks
));
4169 WARN_ON(atomic_read(&osdc
->num_requests
));
4170 WARN_ON(atomic_read(&osdc
->num_homeless
));
4172 ceph_osdmap_destroy(osdc
->osdmap
);
4173 mempool_destroy(osdc
->req_mempool
);
4174 ceph_msgpool_destroy(&osdc
->msgpool_op
);
4175 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
4179 * Read some contiguous pages. If we cross a stripe boundary, shorten
4180 * *plen. Return number of bytes read, or error.
4182 int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
4183 struct ceph_vino vino
, struct ceph_file_layout
*layout
,
4185 u32 truncate_seq
, u64 truncate_size
,
4186 struct page
**pages
, int num_pages
, int page_align
)
4188 struct ceph_osd_request
*req
;
4191 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino
.ino
,
4192 vino
.snap
, off
, *plen
);
4193 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, plen
, 0, 1,
4194 CEPH_OSD_OP_READ
, CEPH_OSD_FLAG_READ
,
4195 NULL
, truncate_seq
, truncate_size
,
4198 return PTR_ERR(req
);
4200 /* it may be a short read due to an object boundary */
4201 osd_req_op_extent_osd_data_pages(req
, 0,
4202 pages
, *plen
, page_align
, false, false);
4204 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
4205 off
, *plen
, *plen
, page_align
);
4207 rc
= ceph_osdc_start_request(osdc
, req
, false);
4209 rc
= ceph_osdc_wait_request(osdc
, req
);
4211 ceph_osdc_put_request(req
);
4212 dout("readpages result %d\n", rc
);
4215 EXPORT_SYMBOL(ceph_osdc_readpages
);
4218 * do a synchronous write on N pages
4220 int ceph_osdc_writepages(struct ceph_osd_client
*osdc
, struct ceph_vino vino
,
4221 struct ceph_file_layout
*layout
,
4222 struct ceph_snap_context
*snapc
,
4224 u32 truncate_seq
, u64 truncate_size
,
4225 struct timespec
*mtime
,
4226 struct page
**pages
, int num_pages
)
4228 struct ceph_osd_request
*req
;
4230 int page_align
= off
& ~PAGE_MASK
;
4232 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, &len
, 0, 1,
4234 CEPH_OSD_FLAG_ONDISK
| CEPH_OSD_FLAG_WRITE
,
4235 snapc
, truncate_seq
, truncate_size
,
4238 return PTR_ERR(req
);
4240 /* it may be a short write due to an object boundary */
4241 osd_req_op_extent_osd_data_pages(req
, 0, pages
, len
, page_align
,
4243 dout("writepages %llu~%llu (%llu bytes)\n", off
, len
, len
);
4245 req
->r_mtime
= *mtime
;
4246 rc
= ceph_osdc_start_request(osdc
, req
, true);
4248 rc
= ceph_osdc_wait_request(osdc
, req
);
4250 ceph_osdc_put_request(req
);
4253 dout("writepages result %d\n", rc
);
4256 EXPORT_SYMBOL(ceph_osdc_writepages
);
4258 int ceph_osdc_setup(void)
4260 size_t size
= sizeof(struct ceph_osd_request
) +
4261 CEPH_OSD_SLAB_OPS
* sizeof(struct ceph_osd_req_op
);
4263 BUG_ON(ceph_osd_request_cache
);
4264 ceph_osd_request_cache
= kmem_cache_create("ceph_osd_request", size
,
4267 return ceph_osd_request_cache
? 0 : -ENOMEM
;
4269 EXPORT_SYMBOL(ceph_osdc_setup
);
4271 void ceph_osdc_cleanup(void)
4273 BUG_ON(!ceph_osd_request_cache
);
4274 kmem_cache_destroy(ceph_osd_request_cache
);
4275 ceph_osd_request_cache
= NULL
;
4277 EXPORT_SYMBOL(ceph_osdc_cleanup
);
4280 * handle incoming message
4282 static void dispatch(struct ceph_connection
*con
, struct ceph_msg
*msg
)
4284 struct ceph_osd
*osd
= con
->private;
4285 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
4286 int type
= le16_to_cpu(msg
->hdr
.type
);
4289 case CEPH_MSG_OSD_MAP
:
4290 ceph_osdc_handle_map(osdc
, msg
);
4292 case CEPH_MSG_OSD_OPREPLY
:
4293 handle_reply(osd
, msg
);
4295 case CEPH_MSG_WATCH_NOTIFY
:
4296 handle_watch_notify(osdc
, msg
);
4300 pr_err("received unknown message type %d %s\n", type
,
4301 ceph_msg_type_name(type
));
4308 * Lookup and return message for incoming reply. Don't try to do
4309 * anything about a larger than preallocated data portion of the
4310 * message at the moment - for now, just skip the message.
4312 static struct ceph_msg
*get_reply(struct ceph_connection
*con
,
4313 struct ceph_msg_header
*hdr
,
4316 struct ceph_osd
*osd
= con
->private;
4317 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
4318 struct ceph_msg
*m
= NULL
;
4319 struct ceph_osd_request
*req
;
4320 int front_len
= le32_to_cpu(hdr
->front_len
);
4321 int data_len
= le32_to_cpu(hdr
->data_len
);
4322 u64 tid
= le64_to_cpu(hdr
->tid
);
4324 down_read(&osdc
->lock
);
4325 if (!osd_registered(osd
)) {
4326 dout("%s osd%d unknown, skipping\n", __func__
, osd
->o_osd
);
4328 goto out_unlock_osdc
;
4330 WARN_ON(osd
->o_osd
!= le64_to_cpu(hdr
->src
.num
));
4332 mutex_lock(&osd
->lock
);
4333 req
= lookup_request(&osd
->o_requests
, tid
);
4335 dout("%s osd%d tid %llu unknown, skipping\n", __func__
,
4338 goto out_unlock_session
;
4341 ceph_msg_revoke_incoming(req
->r_reply
);
4343 if (front_len
> req
->r_reply
->front_alloc_len
) {
4344 pr_warn("%s osd%d tid %llu front %d > preallocated %d\n",
4345 __func__
, osd
->o_osd
, req
->r_tid
, front_len
,
4346 req
->r_reply
->front_alloc_len
);
4347 m
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, front_len
, GFP_NOFS
,
4350 goto out_unlock_session
;
4351 ceph_msg_put(req
->r_reply
);
4355 if (data_len
> req
->r_reply
->data_length
) {
4356 pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n",
4357 __func__
, osd
->o_osd
, req
->r_tid
, data_len
,
4358 req
->r_reply
->data_length
);
4361 goto out_unlock_session
;
4364 m
= ceph_msg_get(req
->r_reply
);
4365 dout("get_reply tid %lld %p\n", tid
, m
);
4368 mutex_unlock(&osd
->lock
);
4370 up_read(&osdc
->lock
);
4375 * TODO: switch to a msg-owned pagelist
4377 static struct ceph_msg
*alloc_msg_with_page_vector(struct ceph_msg_header
*hdr
)
4380 int type
= le16_to_cpu(hdr
->type
);
4381 u32 front_len
= le32_to_cpu(hdr
->front_len
);
4382 u32 data_len
= le32_to_cpu(hdr
->data_len
);
4384 m
= ceph_msg_new(type
, front_len
, GFP_NOIO
, false);
4389 struct page
**pages
;
4390 struct ceph_osd_data osd_data
;
4392 pages
= ceph_alloc_page_vector(calc_pages_for(0, data_len
),
4394 if (IS_ERR(pages
)) {
4399 ceph_osd_data_pages_init(&osd_data
, pages
, data_len
, 0, false,
4401 ceph_osdc_msg_data_add(m
, &osd_data
);
4407 static struct ceph_msg
*alloc_msg(struct ceph_connection
*con
,
4408 struct ceph_msg_header
*hdr
,
4411 struct ceph_osd
*osd
= con
->private;
4412 int type
= le16_to_cpu(hdr
->type
);
4416 case CEPH_MSG_OSD_MAP
:
4417 case CEPH_MSG_WATCH_NOTIFY
:
4418 return alloc_msg_with_page_vector(hdr
);
4419 case CEPH_MSG_OSD_OPREPLY
:
4420 return get_reply(con
, hdr
, skip
);
4422 pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__
,
4430 * Wrappers to refcount containing ceph_osd struct
4432 static struct ceph_connection
*get_osd_con(struct ceph_connection
*con
)
4434 struct ceph_osd
*osd
= con
->private;
4440 static void put_osd_con(struct ceph_connection
*con
)
4442 struct ceph_osd
*osd
= con
->private;
4450 * Note: returned pointer is the address of a structure that's
4451 * managed separately. Caller must *not* attempt to free it.
4453 static struct ceph_auth_handshake
*get_authorizer(struct ceph_connection
*con
,
4454 int *proto
, int force_new
)
4456 struct ceph_osd
*o
= con
->private;
4457 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4458 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4459 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4461 if (force_new
&& auth
->authorizer
) {
4462 ceph_auth_destroy_authorizer(auth
->authorizer
);
4463 auth
->authorizer
= NULL
;
4465 if (!auth
->authorizer
) {
4466 int ret
= ceph_auth_create_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
4469 return ERR_PTR(ret
);
4471 int ret
= ceph_auth_update_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
4474 return ERR_PTR(ret
);
4476 *proto
= ac
->protocol
;
4482 static int verify_authorizer_reply(struct ceph_connection
*con
, int len
)
4484 struct ceph_osd
*o
= con
->private;
4485 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4486 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4488 return ceph_auth_verify_authorizer_reply(ac
, o
->o_auth
.authorizer
, len
);
4491 static int invalidate_authorizer(struct ceph_connection
*con
)
4493 struct ceph_osd
*o
= con
->private;
4494 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4495 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4497 ceph_auth_invalidate_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
);
4498 return ceph_monc_validate_auth(&osdc
->client
->monc
);
4501 static int osd_sign_message(struct ceph_msg
*msg
)
4503 struct ceph_osd
*o
= msg
->con
->private;
4504 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4506 return ceph_auth_sign_message(auth
, msg
);
4509 static int osd_check_message_signature(struct ceph_msg
*msg
)
4511 struct ceph_osd
*o
= msg
->con
->private;
4512 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4514 return ceph_auth_check_message_signature(auth
, msg
);
4517 static const struct ceph_connection_operations osd_con_ops
= {
4520 .dispatch
= dispatch
,
4521 .get_authorizer
= get_authorizer
,
4522 .verify_authorizer_reply
= verify_authorizer_reply
,
4523 .invalidate_authorizer
= invalidate_authorizer
,
4524 .alloc_msg
= alloc_msg
,
4525 .sign_message
= osd_sign_message
,
4526 .check_message_signature
= osd_check_message_signature
,