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- What: /sys/block/rnbd<N>/rnbd/unmap_device
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: To unmap a volume, "normal" or "force" has to be written to:
- /sys/block/rnbd<N>/rnbd/unmap_device
- When "normal" is used, the operation will fail with EBUSY if any process
- is using the device. When "force" is used, the device is also unmapped
- when device is in use. All I/Os that are in progress will fail.
- Example::
- # echo "normal" > /sys/block/rnbd0/rnbd/unmap_device
- What: /sys/block/rnbd<N>/rnbd/state
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: The file contains the current state of the block device. The state file
- returns "open" when the device is successfully mapped from the server
- and accepting I/O requests. When the connection to the server gets
- disconnected in case of an error (e.g. link failure), the state file
- returns "closed" and all I/O requests submitted to it will fail with -EIO.
- What: /sys/block/rnbd<N>/rnbd/session
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: RNBD uses RTRS session to transport the data between client and
- server. The entry "session" contains the name of the session, that
- was used to establish the RTRS session. It's the same name that
- was passed as server parameter to the map_device entry.
- What: /sys/block/rnbd<N>/rnbd/mapping_path
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: Contains the path that was passed as "device_path" to the map_device
- operation.
- What: /sys/block/rnbd<N>/rnbd/access_mode
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: Contains the device access mode: ro, rw or migration.
- What: /sys/block/rnbd<N>/rnbd/resize
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: Write the number of sectors to change the size of the disk.
- What: /sys/block/rnbd<N>/rnbd/remap_device
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: Remap the disconnected device if the session is not destroyed yet.
- What: /sys/block/rnbd<N>/rnbd/nr_poll_queues
- Date: Feb 2020
- KernelVersion: 5.7
- Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]>
- Description: Contains the number of poll-mode queues
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