rbd-nbd − map rbd images to nbd device
rbd−nbd
[−c conf] [−−read−only]
[−−device nbd device]
[−−nbds_max limit]
[−−max_part limit]
[−−exclusive]
[−−encryption−format format]
[−−encryption−passphrase−file
passphrase−file]
[−−io−timeout seconds]
[−−reattach−timeout seconds] map
image−spec | snap−spec
rbd−nbd unmap nbd device |
image−spec | snap−spec
rbd−nbd list−mapped
rbd−nbd attach −−device nbd device
image−spec | snap−spec
rbd−nbd detach nbd device |
image−spec | snap−spec
rbd−nbd is a client for RADOS block device (rbd) images like rbd kernel module. It will map a rbd image to a nbd (Network Block Device) device, allowing access it as regular local block device.
−c ceph.conf
Use ceph.conf configuration file instead of the default /etc/ceph/ceph.conf to determine monitor addresses during startup.
−−read−only
Map read−only.
−−nbds_max *limit*
Override the parameter nbds_max of NBD kernel module when modprobe, used to limit the count of nbd device.
−−max_part *limit*
Override for module param max_part.
−−exclusive
Forbid writes by other clients.
−−encryption−format
Image encryption format. Possible values: luks1, luks2
−−encryption−passphrase−file
Path of file containing a passphrase for unlocking image encryption.
−−io−timeout *seconds*
Override device timeout. Linux kernel will default to a 30 second request timeout. Allow the user to optionally specify an alternate timeout.
−−reattach−timeout *seconds*
Specify timeout for the kernel to wait for a new rbd−nbd process is attached after the old process is detached. The default is 30 second.
image−spec
is [pool−name]/image−name
snap−spec is
[pool−name]/image−name@snap−name
The default for pool−name is "rbd". If an image name contains a slash character ('/'), pool−name is required.
rbd−nbd is part of Ceph, a massively scalable, open−source, distributed storage system. Please refer to the Ceph documentation at http://ceph.com/docs for more information.
rbd(8)
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