About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / ABI / testing / sysfs-bus-rbd




Custom Search

Based on kernel version 3.9. Page generated on 2013-05-02 22:53 EST.

1	What:		/sys/bus/rbd/
2	Date:		November 2010
3	Contact:	Yehuda Sadeh <yehuda@newdream.net>,
4			Sage Weil <sage@newdream.net>
5	Description:
6	
7	Being used for adding and removing rbd block devices.
8	
9	Usage: <mon ip addr> <options> <pool name> <rbd image name> [snap name]
10	
11	 $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
12	
13	The snapshot name can be "-" or omitted to map the image read/write. A <dev-id>
14	will be assigned for any registered block device. If snapshot is used, it will
15	be mapped read-only.
16	
17	Removal of a device:
18	
19	  $ echo <dev-id> > /sys/bus/rbd/remove
20	
21	Entries under /sys/bus/rbd/devices/<dev-id>/
22	--------------------------------------------
23	
24	client_id
25	
26		The ceph unique client id that was assigned for this specific session.
27	
28	features
29	
30		A hexadecimal encoding of the feature bits for this image.
31	
32	major
33	
34		The block device major number.
35	
36	name
37	
38		The name of the rbd image.
39	
40	image_id
41	
42		The unique id for the rbd image.  (For rbd image format 1
43		this is empty.)
44	
45	pool
46	
47		The name of the storage pool where this rbd image resides.
48		An rbd image name is unique within its pool.
49	
50	pool_id
51	
52		The unique identifier for the rbd image's pool.  This is
53		a permanent attribute of the pool.  A pool's id will never
54		change.
55	
56	size
57	
58		The size (in bytes) of the mapped block device.
59	
60	refresh
61	
62		Writing to this file will reread the image header data and set
63		all relevant datastructures accordingly.
64	
65	current_snap
66	
67		The current snapshot for which the device is mapped.
68	
69	snap_*
70	
71		A directory per each snapshot
72	
73	parent
74	
75		Information identifying the pool, image, and snapshot id for
76		the parent image in a layered rbd image (format 2 only).
77	
78	Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name>
79	-------------------------------------------------------------
80	
81	snap_id
82	
83		The rados internal snapshot id assigned for this snapshot
84	
85	snap_size
86	
87		The size of the image when this snapshot was taken.
88	
89	snap_features
90	
91		A hexadecimal encoding of the feature bits for this snapshot.
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog
Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.