Commit | Line | Data |
---|---|---|
dfc5606d YS |
1 | What: /sys/bus/rbd/ |
2 | Date: November 2010 | |
55b00bae | 3 | Contact: Yehuda Sadeh <yehuda@newdream.net>, |
dfc5606d YS |
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 | ||
9b60e70b ID |
21 | What: /sys/bus/rbd/add_single_major |
22 | Date: December 2013 | |
23 | KernelVersion: 3.14 | |
24 | Contact: Sage Weil <sage@inktank.com> | |
25 | Description: Available only if rbd module is inserted with single_major | |
26 | parameter set to true. | |
27 | Usage is the same as for /sys/bus/rbd/add. If present, | |
28 | should be used instead of the latter: any attempts to use | |
29 | /sys/bus/rbd/add if /sys/bus/rbd/add_single_major is | |
30 | available will fail for backwards compatibility reasons. | |
31 | ||
32 | What: /sys/bus/rbd/remove_single_major | |
33 | Date: December 2013 | |
34 | KernelVersion: 3.14 | |
35 | Contact: Sage Weil <sage@inktank.com> | |
36 | Description: Available only if rbd module is inserted with single_major | |
37 | parameter set to true. | |
38 | Usage is the same as for /sys/bus/rbd/remove. If present, | |
39 | should be used instead of the latter: any attempts to use | |
40 | /sys/bus/rbd/remove if /sys/bus/rbd/remove_single_major is | |
41 | available will fail for backwards compatibility reasons. | |
42 | ||
dfc5606d YS |
43 | Entries under /sys/bus/rbd/devices/<dev-id>/ |
44 | -------------------------------------------- | |
45 | ||
46 | client_id | |
47 | ||
48 | The ceph unique client id that was assigned for this specific session. | |
49 | ||
34b13184 AE |
50 | features |
51 | ||
52 | A hexadecimal encoding of the feature bits for this image. | |
53 | ||
dfc5606d YS |
54 | major |
55 | ||
56 | The block device major number. | |
57 | ||
dd82fff1 ID |
58 | minor |
59 | ||
60 | The block device minor number. (December 2013, since 3.14.) | |
61 | ||
dfc5606d YS |
62 | name |
63 | ||
64 | The name of the rbd image. | |
65 | ||
589d30e0 AE |
66 | image_id |
67 | ||
68 | The unique id for the rbd image. (For rbd image format 1 | |
69 | this is empty.) | |
70 | ||
dfc5606d YS |
71 | pool |
72 | ||
9bb2f334 AE |
73 | The name of the storage pool where this rbd image resides. |
74 | An rbd image name is unique within its pool. | |
75 | ||
76 | pool_id | |
77 | ||
78 | The unique identifier for the rbd image's pool. This is | |
79 | a permanent attribute of the pool. A pool's id will never | |
80 | change. | |
dfc5606d YS |
81 | |
82 | size | |
83 | ||
84 | The size (in bytes) of the mapped block device. | |
85 | ||
86 | refresh | |
87 | ||
88 | Writing to this file will reread the image header data and set | |
89 | all relevant datastructures accordingly. | |
90 | ||
91 | current_snap | |
92 | ||
93 | The current snapshot for which the device is mapped. | |
94 | ||
86b00e0d AE |
95 | parent |
96 | ||
97 | Information identifying the pool, image, and snapshot id for | |
98 | the parent image in a layered rbd image (format 2 only). |