1 What: /sys/block/rnbd<N>/rnbd/unmap_device
4 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
5 Description: To unmap a volume, "normal" or "force" has to be written to:
6 /sys/block/rnbd<N>/rnbd/unmap_device
8 When "normal" is used, the operation will fail with EBUSY if any process
9 is using the device. When "force" is used, the device is also unmapped
10 when device is in use. All I/Os that are in progress will fail.
14 # echo "normal" > /sys/block/rnbd0/rnbd/unmap_device
16 What: /sys/block/rnbd<N>/rnbd/state
19 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
20 Description: The file contains the current state of the block device. The state file
21 returns "open" when the device is successfully mapped from the server
22 and accepting I/O requests. When the connection to the server gets
23 disconnected in case of an error (e.g. link failure), the state file
24 returns "closed" and all I/O requests submitted to it will fail with -EIO.
26 What: /sys/block/rnbd<N>/rnbd/session
29 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
30 Description: RNBD uses RTRS session to transport the data between client and
31 server. The entry "session" contains the name of the session, that
32 was used to establish the RTRS session. It's the same name that
33 was passed as server parameter to the map_device entry.
35 What: /sys/block/rnbd<N>/rnbd/mapping_path
38 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
39 Description: Contains the path that was passed as "device_path" to the map_device
42 What: /sys/block/rnbd<N>/rnbd/access_mode
45 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
46 Description: Contains the device access mode: ro, rw or migration.
48 What: /sys/block/rnbd<N>/rnbd/resize
51 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
52 Description: Write the number of sectors to change the size of the disk.
54 What: /sys/block/rnbd<N>/rnbd/remap_device
57 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
58 Description: Remap the disconnected device if the session is not destroyed yet.
60 What: /sys/block/rnbd<N>/rnbd/nr_poll_queues
63 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
64 Description: Contains the number of poll-mode queues