Being used for adding and removing rbd block devices.
-Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name]
+Usage: <mon ip addr> <options> <pool name> <rbd image name> [<snap name>]
$ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
will be assigned for any registered block device. If snapshot is used, it will
be mapped read-only.
-Removal of a device:
+Usage: <dev-id> [force]
- $ echo <dev-id> > /sys/bus/rbd/remove
+ $ echo 2 > /sys/bus/rbd/remove
+
+Optional "force" argument which when passed will wait for running requests and
+then unmap the image. Requests sent to the driver after initiating the removal
+will be failed. (August 2016, since 4.9.)
What: /sys/bus/rbd/add_single_major
Date: December 2013
Entries under /sys/bus/rbd/devices/<dev-id>/
--------------------------------------------
+client_addr
+
+ The ceph unique client entity_addr_t (address + nonce).
+ The format is <address>:<port>/<nonce>: '1.2.3.4:1234/5678' or
+ '[1:2:3:4:5:6:7:8]:1234/5678'. (August 2016, since 4.9.)
+
client_id
The ceph unique client id that was assigned for this specific session.
+cluster_fsid
+
+ The ceph cluster UUID. (August 2016, since 4.9.)
+
+config_info
+
+ The string written into /sys/bus/rbd/add{,_single_major}. (August
+ 2016, since 4.9.)
+
features
A hexadecimal encoding of the feature bits for this image.
The current snapshot for which the device is mapped.
+snap_id
+
+ The current snapshot's id. (August 2016, since 4.9.)
+
parent
Information identifying the chain of parent images in a layered rbd