Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
new file mode 100644
index 0000000000..417a2fe21b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -0,0 +1,173 @@
+What:		/sys/bus/rbd/add
+Date:		Oct, 2010
+KernelVersion:	v2.6.37
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(WO) Add rbd block device.
+
+		Usage: <mon ip addr> <options> <pool name> <rbd image name> [<snap name>]
+
+		Example::
+
+		 $ 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.
+
+
+What:		/sys/bus/rbd/remove
+Date:		Oct, 2010
+KernelVersion:	v2.6.37
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(WO) Remove rbd block device.
+
+		Usage: <dev-id> [force]
+
+		Example::
+
+		 $ echo 2 > /sys/bus/rbd/remove
+
+		Optional "force" argument which when passed will wait for
+		running requests and then unmap the image. Requests sent to the
+		driver after initiating the removal will be failed. (August
+		2016, since 4.9.)
+
+
+What:		/sys/bus/rbd/add_single_major
+Date:		Dec, 2013
+KernelVersion:	v3.14
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(WO) 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, this
+		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:		Dec, 2013
+KernelVersion:	v3.14
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(WO) 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, this
+		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.
+
+
+What:		/sys/bus/rbd/supported_features
+Date:		Mar, 2017
+KernelVersion:	v4.11
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(RO) Displays the features supported by the rbd module so that
+		userspace can generate meaningful error messages and spell out
+		unsupported features that need to be disabled.
+
+
+What:		/sys/bus/rbd/devices/<dev-id>/size
+What:		/sys/bus/rbd/devices/<dev-id>/major
+What:		/sys/bus/rbd/devices/<dev-id>/client_id
+What:		/sys/bus/rbd/devices/<dev-id>/pool
+What:		/sys/bus/rbd/devices/<dev-id>/name
+What:		/sys/bus/rbd/devices/<dev-id>/refresh
+What:		/sys/bus/rbd/devices/<dev-id>/current_snap
+Date:		Oct, 2010
+KernelVersion:	v2.6.37
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+
+		==============	================================================
+		size		(RO) The size (in bytes) of the mapped block
+				device.
+
+		major		(RO) The block device major number.
+
+		client_id	(RO) The ceph unique client id that was assigned
+				for this specific session.
+
+		pool		(RO) The name of the storage pool where this rbd
+				image resides. An rbd image name is unique
+				within its pool.
+
+		name		(RO) The name of the rbd image.
+
+		refresh		(WO) Writing to this file will reread the image
+				header data and set all relevant data structures
+				accordingly.
+
+		current_snap	(RO) The current snapshot for which the device
+				is mapped.
+		==============	================================================
+
+
+What:		/sys/bus/rbd/devices/<dev-id>/pool_id
+Date:		Jul, 2012
+KernelVersion:	v3.6
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(RO) The unique identifier for the rbd image's pool. This is a
+		permanent attribute of the pool. A pool's id will never change.
+
+
+What:		/sys/bus/rbd/devices/<dev-id>/image_id
+What:		/sys/bus/rbd/devices/<dev-id>/features
+Date:		Oct, 2012
+KernelVersion:	v3.7
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		=========	===============================================
+		image_id	(RO) The unique id for the rbd image. (For rbd
+				image format 1 this is empty.)
+
+		features	(RO) A hexadecimal encoding of the feature bits
+				for this image.
+		=========	===============================================
+
+
+What:		/sys/bus/rbd/devices/<dev-id>/parent
+Date:		Nov, 2012
+KernelVersion:	v3.8
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(RO) Information identifying the chain of parent images in a
+		layered rbd image. Entries are separated by empty lines.
+
+
+What:		/sys/bus/rbd/devices/<dev-id>/minor
+Date:		Dec, 2013
+KernelVersion:	v3.14
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		(RO) The block device minor number.
+
+
+What:		/sys/bus/rbd/devices/<dev-id>/snap_id
+What:		/sys/bus/rbd/devices/<dev-id>/config_info
+What:		/sys/bus/rbd/devices/<dev-id>/cluster_fsid
+What:		/sys/bus/rbd/devices/<dev-id>/client_addr
+Date:		Aug, 2016
+KernelVersion:	v4.9
+Contact:	Sage Weil <sage@newdream.net>
+Description:
+		============	================================================
+		snap_id		(RO) The current snapshot's id.
+
+		config_info	(RO) The string written into
+				/sys/bus/rbd/add{,_single_major}.
+
+		cluster_fsid	(RO) The ceph cluster UUID.
+
+		client_addr	(RO) The ceph unique client
+				entity_addr_t (address + nonce). The format is
+				<address>:<port>/<nonce>: '1.2.3.4:1234/5678' or
+				'[1:2:3:4:5:6:7:8]:1234/5678'.
+		============	================================================