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 Entries under /sys/bus/rbd/devices/<dev-id>/
22 --------------------------------------------
26 The ceph unique client id that was assigned for this specific session.
30 The block device major number.
34 The name of the rbd image.
38 The pool where this rbd image resides. The pool-name pair is unique
43 The size (in bytes) of the mapped block device.
47 Writing to this file will reread the image header data and set
48 all relevant datastructures accordingly.
52 The current snapshot for which the device is mapped.
58 $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_create
62 Rolls back data to the specified snapshot. This goes over the entire
63 list of rados blocks and sends a rollback command to each.
65 $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_rollback
69 A directory per each snapshot
72 Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name>
73 -------------------------------------------------------------
77 The rados internal snapshot id assigned for this snapshot
81 The size of the image when this snapshot was taken.