Commit 7035cdf3 authored Oct 08, 2012 by Linus Torvalds

ceph-client

Pull ceph updates from Sage Weil:
 "The bulk of this pull is a series from Alex that refactors and cleans
  up the RBD code to lay the groundwork for supporting the new image
  format and evolving feature set.  There are also some cleanups in
  libceph, and for ceph there's fixed validation of file striping
  layouts and a bugfix in the code handling a shrinking MDS cluster."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (71 commits)
  ceph: avoid 32-bit page index overflow
  ceph: return EIO on invalid layout on GET_DATALOC ioctl
  rbd: BUG on invalid layout
  ceph: propagate layout error on osd request creation
  libceph: check for invalid mapping
  ceph: convert to use le32_add_cpu()
  ceph: Fix oops when handling mdsmap that decreases max_mds
  rbd: update remaining header fields for v2
  rbd: get snapshot name for a v2 image
  rbd: get the snapshot context for a v2 image
  rbd: get image features for a v2 image
  rbd: get the object prefix for a v2 rbd image
  rbd: add code to get the size of a v2 rbd image
  rbd: lay out header probe infrastructure
  rbd: encapsulate code that gets snapshot info
  rbd: add an rbd features field
  rbd: don't use index in __rbd_add_snap_dev()
  rbd: kill create_snap sysfs entry
  rbd: define rbd_dev_image_id()
  rbd: define some new format constants
  ...

parents 6432f212 6285bc23

Documentation/ABI/testing/sysfs-bus-rbd

+12 −6

Original line number	Diff line number	Diff line
		@@ -25,6 +25,10 @@ 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.
		@@ -33,6 +37,11 @@ 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 name of the storage pool where this rbd image resides.
		@@ -57,12 +66,6 @@ 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
		@@ -79,4 +82,7 @@ snap_size

		The size of the image when this snapshot was taken.

		snap_features

		A hexadecimal encoding of the feature bits for this snapshot.