diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-rbd')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-rbd | 79 |
1 files changed, 47 insertions, 32 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd index 90a87e2a572..501adc2a9ec 100644 --- a/Documentation/ABI/testing/sysfs-bus-rbd +++ b/Documentation/ABI/testing/sysfs-bus-rbd @@ -1,6 +1,6 @@ What: /sys/bus/rbd/ Date: November 2010 -Contact: Yehuda Sadeh <yehuda@hq.newdream.net>, +Contact: Yehuda Sadeh <yehuda@newdream.net>, Sage Weil <sage@newdream.net> Description: @@ -18,6 +18,28 @@ Removal of a device: $ echo <dev-id> > /sys/bus/rbd/remove +What: /sys/bus/rbd/add_single_major +Date: December 2013 +KernelVersion: 3.14 +Contact: Sage Weil <sage@inktank.com> +Description: Available only if rbd module is inserted with single_major + parameter set to true. + Usage is the same as for /sys/bus/rbd/add. If present, + should be used instead of the latter: any attempts to use + /sys/bus/rbd/add if /sys/bus/rbd/add_single_major is + available will fail for backwards compatibility reasons. + +What: /sys/bus/rbd/remove_single_major +Date: December 2013 +KernelVersion: 3.14 +Contact: Sage Weil <sage@inktank.com> +Description: Available only if rbd module is inserted with single_major + parameter set to true. + Usage is the same as for /sys/bus/rbd/remove. If present, + should be used instead of the latter: any attempts to use + /sys/bus/rbd/remove if /sys/bus/rbd/remove_single_major is + available will fail for backwards compatibility reasons. + Entries under /sys/bus/rbd/devices/<dev-id>/ -------------------------------------------- @@ -25,18 +47,37 @@ client_id The ceph unique client id that was assigned for this specific session. +features + + A hexadecimal encoding of the feature bits for this image. + major The block device major number. +minor + + The block device minor number. (December 2013, since 3.14.) + name The name of the rbd image. +image_id + + The unique id for the rbd image. (For rbd image format 1 + this is empty.) + pool - The pool where this rbd image resides. The pool-name pair is unique - per rados system. + The name of the storage pool where this rbd image resides. + An rbd image name is unique within its pool. + +pool_id + + The unique identifier for the rbd image's pool. This is + a permanent attribute of the pool. A pool's id will never + change. size @@ -51,33 +92,7 @@ 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. - +parent + Information identifying the pool, image, and snapshot id for + the parent image in a layered rbd image (format 2 only). |