Commit | Line | Data |
---|---|---|
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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 | ||
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 | major | |
29 | ||
30 | The block device major number. | |
31 | ||
32 | name | |
33 | ||
34 | The name of the rbd image. | |
35 | ||
589d30e0 AE |
36 | image_id |
37 | ||
38 | The unique id for the rbd image. (For rbd image format 1 | |
39 | this is empty.) | |
40 | ||
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41 | pool |
42 | ||
9bb2f334 AE |
43 | The name of the storage pool where this rbd image resides. |
44 | An rbd image name is unique within its pool. | |
45 | ||
46 | pool_id | |
47 | ||
48 | The unique identifier for the rbd image's pool. This is | |
49 | a permanent attribute of the pool. A pool's id will never | |
50 | change. | |
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51 | |
52 | size | |
53 | ||
54 | The size (in bytes) of the mapped block device. | |
55 | ||
56 | refresh | |
57 | ||
58 | Writing to this file will reread the image header data and set | |
59 | all relevant datastructures accordingly. | |
60 | ||
61 | current_snap | |
62 | ||
63 | The current snapshot for which the device is mapped. | |
64 | ||
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65 | snap_* |
66 | ||
67 | A directory per each snapshot | |
68 | ||
69 | ||
70 | Entries under /sys/bus/rbd/devices/<dev-id>/snap_<snap-name> | |
71 | ------------------------------------------------------------- | |
72 | ||
b7f6519e | 73 | snap_id |
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74 | |
75 | The rados internal snapshot id assigned for this snapshot | |
76 | ||
b7f6519e | 77 | snap_size |
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78 | |
79 | The size of the image when this snapshot was taken. | |
80 | ||
81 |