2010-11-19 22:51:04 +00:00
|
|
|
What: /sys/bus/rbd/
|
|
|
|
|
Date: November 2010
|
2011-03-21 22:06:50 +00:00
|
|
|
Contact: Yehuda Sadeh <yehuda@newdream.net>,
|
2010-11-19 22:51:04 +00:00
|
|
|
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>
|
|
|
|
|
-------------------------------------------------------------
|
|
|
|
|
|
2011-12-01 23:12:03 +00:00
|
|
|
snap_id
|
2010-11-19 22:51:04 +00:00
|
|
|
|
|
|
|
|
The rados internal snapshot id assigned for this snapshot
|
|
|
|
|
|
2011-12-01 23:12:03 +00:00
|
|
|
snap_size
|
2010-11-19 22:51:04 +00:00
|
|
|
|
|
|
|
|
The size of the image when this snapshot was taken.
|
|
|
|
|
|
|
|
|
|
|
