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1What: /sys/bus/rbd/add
2Date: Oct, 2010
3KernelVersion: v2.6.37
4Contact: Sage Weil <sage@newdream.net>
5Description:
6 (WO) Add rbd block device.
7
8 Usage: <mon ip addr> <options> <pool name> <rbd image name> [<snap name>]
9
10 Example::
11
12 $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
13
14 The snapshot name can be "-" or omitted to map the image
15 read/write. A <dev-id> will be assigned for any registered block
16 device. If snapshot is used, it will be mapped read-only.
17
18
19What: /sys/bus/rbd/remove
20Date: Oct, 2010
21KernelVersion: v2.6.37
22Contact: Sage Weil <sage@newdream.net>
23Description:
24 (WO) Remove rbd block device.
25
26 Usage: <dev-id> [force]
27
28 Example::
29
30 $ echo 2 > /sys/bus/rbd/remove
31
32 Optional "force" argument which when passed will wait for
33 running requests and then unmap the image. Requests sent to the
34 driver after initiating the removal will be failed. (August
35 2016, since 4.9.)
36
37
38What: /sys/bus/rbd/add_single_major
39Date: Dec, 2013
40KernelVersion: v3.14
41Contact: Sage Weil <sage@newdream.net>
42Description:
43 (WO) Available only if rbd module is inserted with single_major
44 parameter set to true.
45
46 Usage is the same as for /sys/bus/rbd/add. If present, this
47 should be used instead of the latter: any attempts to use
48 /sys/bus/rbd/add if /sys/bus/rbd/add_single_major is available
49 will fail for backwards compatibility reasons.
50
51
52What: /sys/bus/rbd/remove_single_major
53Date: Dec, 2013
54KernelVersion: v3.14
55Contact: Sage Weil <sage@newdream.net>
56Description:
57 (WO) Available only if rbd module is inserted with single_major
58 parameter set to true.
59
60 Usage is the same as for /sys/bus/rbd/remove. If present, this
61 should be used instead of the latter: any attempts to use
62 /sys/bus/rbd/remove if /sys/bus/rbd/remove_single_major is
63 available will fail for backwards compatibility reasons.
64
65
66What: /sys/bus/rbd/supported_features
67Date: Mar, 2017
68KernelVersion: v4.11
69Contact: Sage Weil <sage@newdream.net>
70Description:
71 (RO) Displays the features supported by the rbd module so that
72 userspace can generate meaningful error messages and spell out
73 unsupported features that need to be disabled.
74
75
76What: /sys/bus/rbd/devices/<dev-id>/size
77What: /sys/bus/rbd/devices/<dev-id>/major
78What: /sys/bus/rbd/devices/<dev-id>/client_id
79What: /sys/bus/rbd/devices/<dev-id>/pool
80What: /sys/bus/rbd/devices/<dev-id>/name
81What: /sys/bus/rbd/devices/<dev-id>/refresh
82What: /sys/bus/rbd/devices/<dev-id>/current_snap
83Date: Oct, 2010
84KernelVersion: v2.6.37
85Contact: Sage Weil <sage@newdream.net>
86Description:
87
88 ============== ================================================
89 size (RO) The size (in bytes) of the mapped block
90 device.
91
92 major (RO) The block device major number.
93
94 client_id (RO) The ceph unique client id that was assigned
95 for this specific session.
96
97 pool (RO) The name of the storage pool where this rbd
98 image resides. An rbd image name is unique
99 within its pool.
100
101 name (RO) The name of the rbd image.
102
103 refresh (WO) Writing to this file will reread the image
104 header data and set all relevant data structures
105 accordingly.
106
107 current_snap (RO) The current snapshot for which the device
108 is mapped.
109 ============== ================================================
110
111
112What: /sys/bus/rbd/devices/<dev-id>/pool_id
113Date: Jul, 2012
114KernelVersion: v3.6
115Contact: Sage Weil <sage@newdream.net>
116Description:
117 (RO) The unique identifier for the rbd image's pool. This is a
118 permanent attribute of the pool. A pool's id will never change.
119
120
121What: /sys/bus/rbd/devices/<dev-id>/image_id
122What: /sys/bus/rbd/devices/<dev-id>/features
123Date: Oct, 2012
124KernelVersion: v3.7
125Contact: Sage Weil <sage@newdream.net>
126Description:
127 ========= ===============================================
128 image_id (RO) The unique id for the rbd image. (For rbd
129 image format 1 this is empty.)
130
131 features (RO) A hexadecimal encoding of the feature bits
132 for this image.
133 ========= ===============================================
134
135
136What: /sys/bus/rbd/devices/<dev-id>/parent
137Date: Nov, 2012
138KernelVersion: v3.8
139Contact: Sage Weil <sage@newdream.net>
140Description:
141 (RO) Information identifying the chain of parent images in a
142 layered rbd image. Entries are separated by empty lines.
143
144
145What: /sys/bus/rbd/devices/<dev-id>/minor
146Date: Dec, 2013
147KernelVersion: v3.14
148Contact: Sage Weil <sage@newdream.net>
149Description:
150 (RO) The block device minor number.
151
152
153What: /sys/bus/rbd/devices/<dev-id>/snap_id
154What: /sys/bus/rbd/devices/<dev-id>/config_info
155What: /sys/bus/rbd/devices/<dev-id>/cluster_fsid
156What: /sys/bus/rbd/devices/<dev-id>/client_addr
157Date: Aug, 2016
158KernelVersion: v4.9
159Contact: Sage Weil <sage@newdream.net>
160Description:
161 ============ ================================================
162 snap_id (RO) The current snapshot's id.
163
164 config_info (RO) The string written into
165 /sys/bus/rbd/add{,_single_major}.
166
167 cluster_fsid (RO) The ceph cluster UUID.
168
169 client_addr (RO) The ceph unique client
170 entity_addr_t (address + nonce). The format is
171 <address>:<port>/<nonce>: '1.2.3.4:1234/5678' or
172 '[1:2:3:4:5:6:7:8]:1234/5678'.
173 ============ ================================================
1What: /sys/bus/rbd/add
2Date: Oct, 2010
3KernelVersion: v2.6.37
4Contact: Sage Weil <sage@newdream.net>
5Description:
6 (WO) Add rbd block device.
7
8 Usage: <mon ip addr> <options> <pool name> <rbd image name> [<snap name>]
9
10 $ echo "192.168.0.1 name=admin rbd foo" > /sys/bus/rbd/add
11
12 The snapshot name can be "-" or omitted to map the image
13 read/write. A <dev-id> will be assigned for any registered block
14 device. If snapshot is used, it will be mapped read-only.
15
16
17What: /sys/bus/rbd/remove
18Date: Oct, 2010
19KernelVersion: v2.6.37
20Contact: Sage Weil <sage@newdream.net>
21Description:
22 (WO) Remove rbd block device.
23
24 Usage: <dev-id> [force]
25
26 $ echo 2 > /sys/bus/rbd/remove
27
28 Optional "force" argument which when passed will wait for
29 running requests and then unmap the image. Requests sent to the
30 driver after initiating the removal will be failed. (August
31 2016, since 4.9.)
32
33
34What: /sys/bus/rbd/add_single_major
35Date: Dec, 2013
36KernelVersion: v3.14
37Contact: Sage Weil <sage@newdream.net>
38Description:
39 (WO) Available only if rbd module is inserted with single_major
40 parameter set to true.
41
42 Usage is the same as for /sys/bus/rbd/add. If present, this
43 should be used instead of the latter: any attempts to use
44 /sys/bus/rbd/add if /sys/bus/rbd/add_single_major is available
45 will fail for backwards compatibility reasons.
46
47
48What: /sys/bus/rbd/remove_single_major
49Date: Dec, 2013
50KernelVersion: v3.14
51Contact: Sage Weil <sage@newdream.net>
52Description:
53 (WO) Available only if rbd module is inserted with single_major
54 parameter set to true.
55
56 Usage is the same as for /sys/bus/rbd/remove. If present, this
57 should be used instead of the latter: any attempts to use
58 /sys/bus/rbd/remove if /sys/bus/rbd/remove_single_major is
59 available will fail for backwards compatibility reasons.
60
61
62What: /sys/bus/rbd/supported_features
63Date: Mar, 2017
64KernelVersion: v4.11
65Contact: Sage Weil <sage@newdream.net>
66Description:
67 (RO) Displays the features supported by the rbd module so that
68 userspace can generate meaningful error messages and spell out
69 unsupported features that need to be disabled.
70
71
72What: /sys/bus/rbd/devices/<dev-id>/size
73What: /sys/bus/rbd/devices/<dev-id>/major
74What: /sys/bus/rbd/devices/<dev-id>/client_id
75What: /sys/bus/rbd/devices/<dev-id>/pool
76What: /sys/bus/rbd/devices/<dev-id>/name
77What: /sys/bus/rbd/devices/<dev-id>/refresh
78What: /sys/bus/rbd/devices/<dev-id>/current_snap
79Date: Oct, 2010
80KernelVersion: v2.6.37
81Contact: Sage Weil <sage@newdream.net>
82Description:
83 size: (RO) The size (in bytes) of the mapped block
84 device.
85
86 major: (RO) The block device major number.
87
88 client_id: (RO) The ceph unique client id that was assigned
89 for this specific session.
90
91 pool: (RO) The name of the storage pool where this rbd
92 image resides. An rbd image name is unique
93 within its pool.
94
95 name: (RO) The name of the rbd image.
96
97 refresh: (WO) Writing to this file will reread the image
98 header data and set all relevant data structures
99 accordingly.
100
101 current_snap: (RO) The current snapshot for which the device
102 is mapped.
103
104
105What: /sys/bus/rbd/devices/<dev-id>/pool_id
106Date: Jul, 2012
107KernelVersion: v3.6
108Contact: Sage Weil <sage@newdream.net>
109Description:
110 (RO) The unique identifier for the rbd image's pool. This is a
111 permanent attribute of the pool. A pool's id will never change.
112
113
114What: /sys/bus/rbd/devices/<dev-id>/image_id
115What: /sys/bus/rbd/devices/<dev-id>/features
116Date: Oct, 2012
117KernelVersion: v3.7
118Contact: Sage Weil <sage@newdream.net>
119Description:
120 image_id: (RO) The unique id for the rbd image. (For rbd
121 image format 1 this is empty.)
122
123 features: (RO) A hexadecimal encoding of the feature bits
124 for this image.
125
126
127What: /sys/bus/rbd/devices/<dev-id>/parent
128Date: Nov, 2012
129KernelVersion: v3.8
130Contact: Sage Weil <sage@newdream.net>
131Description:
132 (RO) Information identifying the chain of parent images in a
133 layered rbd image. Entries are separated by empty lines.
134
135
136What: /sys/bus/rbd/devices/<dev-id>/minor
137Date: Dec, 2013
138KernelVersion: v3.14
139Contact: Sage Weil <sage@newdream.net>
140Description:
141 (RO) The block device minor number.
142
143
144What: /sys/bus/rbd/devices/<dev-id>/snap_id
145What: /sys/bus/rbd/devices/<dev-id>/config_info
146What: /sys/bus/rbd/devices/<dev-id>/cluster_fsid
147What: /sys/bus/rbd/devices/<dev-id>/client_addr
148Date: Aug, 2016
149KernelVersion: v4.9
150Contact: Sage Weil <sage@newdream.net>
151Description:
152 snap_id: (RO) The current snapshot's id.
153
154 config_info: (RO) The string written into
155 /sys/bus/rbd/add{,_single_major}.
156
157 cluster_fsid: (RO) The ceph cluster UUID.
158
159 client_addr: (RO) The ceph unique client
160 entity_addr_t (address + nonce). The format is
161 <address>:<port>/<nonce>: '1.2.3.4:1234/5678' or
162 '[1:2:3:4:5:6:7:8]:1234/5678'.