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-What: /sys/bus/rbd/
-Date: November 2010
-Contact: Yehuda Sadeh <yehuda@newdream.net>,
- Sage Weil <sage@newdream.net>
-Description:
-
-Being used for adding and removing rbd block devices.
-
-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
-
-The snapshot name can be "-" or omitted to map the image read/write. A <dev-id>
-will be assigned for any registered block device. If snapshot is used, it will
-be mapped read-only.
-
-Removal of a device:
-
- $ echo <dev-id> > /sys/bus/rbd/remove
-
-Entries under /sys/bus/rbd/devices/<dev-id>/
---------------------------------------------
-
-client_id
-
- The ceph unique client id that was assigned for this specific session.
-
-major
-
- The block device major number.
-
-name
-
- The name of the rbd image.
-
-pool
-
- The pool where this rbd image resides. The pool-name pair is unique
- per rados system.
-
-size
-
- The size (in bytes) of the mapped block device.
-
-refresh
-
- Writing to this file will reread the image header data and set
- all relevant datastructures accordingly.
-
-current_snap
-
- The current snapshot for which the device is mapped.
-
-create_snap
-
- Create a snapshot:
-
- $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_create
-
-snap_*
-
- A directory per each snapshot
-
-
-Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name>
--------------------------------------------------------------
-
-snap_id
-
- The rados internal snapshot id assigned for this snapshot
-
-snap_size
-
- The size of the image when this snapshot was taken.
-
-