aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-12-02 08:05:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-12-02 08:05:22 -0800
commit04ed0978d5ca5a3460a6f1f7443f8147a183669f (patch)
tree91f71e29b0cb4a7d644fc64aa7d4c0ee2c4dc0a0 /Documentation
parent8520eeaa1235ee78d32558b6a57e02b236c9e588 (diff)
parentdfc5606dc51381186de765243bab340c8e021868 (diff)
downloadmrst-s0i3-test-04ed0978d5ca5a3460a6f1f7443f8147a183669f.tar.gz
mrst-s0i3-test-04ed0978d5ca5a3460a6f1f7443f8147a183669f.tar.xz
mrst-s0i3-test-04ed0978d5ca5a3460a6f1f7443f8147a183669f.zip
Merge branch 'rbd-sysfs' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'rbd-sysfs' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: replace the rbd sysfs interface
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-rbd83
1 files changed, 83 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
new file mode 100644
index 00000000000..90a87e2a572
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -0,0 +1,83 @@
+What: /sys/bus/rbd/
+Date: November 2010
+Contact: Yehuda Sadeh <yehuda@hq.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
+
+rollback_snap
+
+ Rolls back data to the specified snapshot. This goes over the entire
+ list of rados blocks and sends a rollback command to each.
+
+ $ echo <snap-name> > /sys/bus/rbd/devices/<dev-id>/snap_rollback
+
+snap_*
+
+ A directory per each snapshot
+
+
+Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name>
+-------------------------------------------------------------
+
+id
+
+ The rados internal snapshot id assigned for this snapshot
+
+size
+
+ The size of the image when this snapshot was taken.
+
+