The snapshot name can be "-"oromittedto map the image read/write. A <dev-id> will be assigned forany registered block
device. If snapshot is used, it will be mapped read-only.
Optional"force" argument which when passed will wait for
running requests andthen unmap the image. Requests sent to the
driver after initiating the removal will be failed. (August 2016, since 4.9.)
What: /sys/bus/rbd/add_single_major Date: Dec, 2013
KernelVersion: v3.14
Contact: Sage Weil <sage@newdream.net>
Description:
(WO) Available only if rbd moduleis inserted with single_major
parameter settotrue.
Usageis the same as for /sys/bus/rbd/add. If present, this
should be used instead of the latter: any attempts touse
/sys/bus/rbd/addif /sys/bus/rbd/add_single_major is available
will fail for backwards compatibility reasons.
What: /sys/bus/rbd/remove_single_major Date: Dec, 2013
KernelVersion: v3.14
Contact: Sage Weil <sage@newdream.net>
Description:
(WO) Available only if rbd moduleis inserted with single_major
parameter settotrue.
Usageis the same as for /sys/bus/rbd/remove. If present, this
should be used instead of the latter: any attempts touse
/sys/bus/rbd/remove if /sys/bus/rbd/remove_single_major is
available will fail for backwards compatibility reasons.
What: /sys/bus/rbd/supported_features Date: Mar, 2017
KernelVersion: v4.11
Contact: Sage Weil <sage@newdream.net>
Description:
(RO) Displays the features supported by the rbd module so that
userspace can generate meaningful error messages and spell out
unsupported features that need to be disabled.
============== ================================================ size (RO) The size (in bytes) of the mapped block
device.
major (RO) The block device major number.
client_id (RO) The ceph unique client id that was assigned for this specific session.
pool (RO) The name of the storage pool where this rbd
image resides. An rbd image name is unique
within its pool.
name (RO) The name of the rbd image.
refresh (WO) Writing to this file will reread the image
header dataandsetall relevant data structures
accordingly.
current_snap (RO) The current snapshot for which the device is mapped.
============== ================================================
What: /sys/bus/rbd/devices/<dev-id>/pool_id Date: Jul, 2012
KernelVersion: v3.6
Contact: Sage Weil <sage@newdream.net>
Description:
(RO) The unique identifier for the rbd image's pool. This is a
permanent attribute of the pool. A pool's id will never change.
What: /sys/bus/rbd/devices/<dev-id>/image_id
What: /sys/bus/rbd/devices/<dev-id>/features Date: Oct, 2012
KernelVersion: v3.7
Contact: Sage Weil <sage@newdream.net>
Description:
========= ===============================================
image_id (RO) The unique id for the rbd image. (For rbd
image format1 this is empty.)
features (RO) A hexadecimal encoding of the feature bits for this image.
========= ===============================================
What: /sys/bus/rbd/devices/<dev-id>/parent Date: Nov, 2012
KernelVersion: v3.8
Contact: Sage Weil <sage@newdream.net>
Description:
(RO) Information identifying the chain of parent images in a
layered rbd image. Entries are separated by empty lines.
What: /sys/bus/rbd/devices/<dev-id>/minor Date: Dec, 2013
KernelVersion: v3.14
Contact: Sage Weil <sage@newdream.net>
Description:
(RO) The block device minor number.
What: /sys/bus/rbd/devices/<dev-id>/snap_id
What: /sys/bus/rbd/devices/<dev-id>/config_info
What: /sys/bus/rbd/devices/<dev-id>/cluster_fsid
What: /sys/bus/rbd/devices/<dev-id>/client_addr Date: Aug, 2016
KernelVersion: v4.9
Contact: Sage Weil <sage@newdream.net>
Description:
============ ================================================
snap_id (RO) The current snapshot's id.
config_info (RO) The string written into
/sys/bus/rbd/add{,_single_major}.
cluster_fsid (RO) The ceph cluster UUID.
client_addr (RO) The ceph unique client
entity_addr_t (address + nonce). The formatis
<address>:<port>/<nonce>: '1.2.3.4:1234/5678'or '[1:2:3:4:5:6:7:8]:1234/5678'.
============ ================================================
Messung V0.5 in Prozent
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