projects / deliverable / linux.git / blame
| 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 | ||
| ff96128f ID |
97 | Information identifying the chain of parent images in a layered rbd |
| 98 | image. Entries are separated by empty lines. |