#Linux disk map out bad blocks driver#
#Linux disk map out bad blocks full#

When the object map feature isĮnabled on an image, limiting the diff to the object extents willĭramatically improve performance since the differences can be computedīy examining the in-memory object map instead of querying RADOS for each

#Linux disk map out bad blocks full#

Specifies that the diff should be limited to the extents of a full object This will disable features that are dependent upon exclusive ownership Specifies that the image will be used concurrently by multiple clients. Journaling: journaled IO support (requires exclusive-lock) Object-map: object map support (requires exclusive-lock)įast-diff: fast diff calculations (requires object-map) The following features are supported:Įxclusive-lock: exclusive locking support Multiple features can be enabled by repeating this option Specifies which RBD format 2 feature should be enabled when creatingĪn image. krbd-options is a comma-separated list of options Specifies which options to use when mapping or unmapping an image via the o krbd-options, -options krbd-options  Make json or xml formatted output more human-readable. Specifies output formatting (default: plain, json, xml) -pretty-format  Live migration of a virtual machine, or for use underneathĪ clustered file system. This is useful for situations where an image mustīe open from more than one client at once, like during Option for lock add that allows multiple clients to lock the This option is overridden by -keyring if the latter is also specified. Specifies a file containing the secret key of -id user to use with the map command. Specifies a keyring file containing a secret for the specified user Specifies the username (without the client. Specifies the snapshot name for the specific operation. See striping section (below) for more details. Specifies the number of objects to stripe over before looping back Which takes a power of two (default object size is 2 ^ rbd_default_order). The default value can be changed with the configuration option rbd_default_order, Object size is 4M, smallest is 4K and maximum is 32M. Nearest power of two if no suffix is given, unit B is assumed. If no suffix is given, unit M is assumed. Specifies the size of the new rbd image or the new size of the existing rbd Support for cloning and is more easily extensible to allow more The Bobtail release and the kernel rbd module since kernel 3.10 (exceptįor “fancy” striping, which is supported since kernel 4.17). Thisįormat is understood by all versions of librbd and the kernel rbd module,īut does not support newer features like cloning.įormat 2 - Use the second rbd format, which is supported by librbd since The default is 2.įormat 1 - (deprecated) Use the original format for a new rbd image. Use a pre-defined image namespace within a pool -no-progress ĭo not output progress information (goes to standard error byĭefault for some commands).

Use different cluster name as compared to default cluster name ceph. m monaddress Ĭonnect to specified monitor (instead of looking through nf). Use nf configuration file instead of the default /etc/ceph/nf toĭetermine monitor addresses during startup.

RBD images are simple block devices that are striped over objects and

#Linux disk map out bad blocks driver#

Used by the Linux rbd driver and the rbd storage driver for QEMU/KVM. Rbd is a utility for manipulating rados block device (RBD) images,