3 Contact: Yehuda Sadeh <yehuda@newdream.net>,
4 Sage Weil <sage@newdream.net>
7 Being used for adding and removing rbd block devices.
9 Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name]
11 $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
13 The snapshot name can be "-" or omitted to map the image read/write. A <dev-id>
14 will be assigned for any registered block device. If snapshot is used, it will
19 $ echo <dev-id> > /sys/bus/rbd/remove
21 What: /sys/bus/rbd/add_single_major
24 Contact: Sage Weil <sage@inktank.com>
25 Description: Available only if rbd module is inserted with single_major
26 parameter set to true.
27 Usage is the same as for /sys/bus/rbd/add. If present,
28 should be used instead of the latter: any attempts to use
29 /sys/bus/rbd/add if /sys/bus/rbd/add_single_major is
30 available will fail for backwards compatibility reasons.
32 What: /sys/bus/rbd/remove_single_major
35 Contact: Sage Weil <sage@inktank.com>
36 Description: Available only if rbd module is inserted with single_major
37 parameter set to true.
38 Usage is the same as for /sys/bus/rbd/remove. If present,
39 should be used instead of the latter: any attempts to use
40 /sys/bus/rbd/remove if /sys/bus/rbd/remove_single_major is
41 available will fail for backwards compatibility reasons.
43 Entries under /sys/bus/rbd/devices/<dev-id>/
44 --------------------------------------------
48 The ceph unique client id that was assigned for this specific session.
52 A hexadecimal encoding of the feature bits for this image.
56 The block device major number.
60 The block device minor number. (December 2013, since 3.14.)
64 The name of the rbd image.
68 The unique id for the rbd image. (For rbd image format 1
73 The name of the storage pool where this rbd image resides.
74 An rbd image name is unique within its pool.
78 The unique identifier for the rbd image's pool. This is
79 a permanent attribute of the pool. A pool's id will never
84 The size (in bytes) of the mapped block device.
88 Writing to this file will reread the image header data and set
89 all relevant datastructures accordingly.
93 The current snapshot for which the device is mapped.
97 Information identifying the pool, image, and snapshot id for
98 the parent image in a layered rbd image (format 2 only).