blkdeactivate — utility to deactivate block devices
blkdeactivate [−d dm_options] [−e] [−h] [−l lvm_options] [−m mpath_options] [−r mdraid_options] [−o vdo_options] [−u] [−v] [device]
The blkdeactivate utility deactivates block devices. For mounted block devices, it attempts to unmount it automatically before trying to deactivate. The utility currently supports device-mapper devices (DM), including LVM volumes and software RAID MD devices. LVM volumes are handled directly using the lvm(8) command, the rest of device-mapper based devices are handled using the dmsetup(8) command. MD devices are handled using the mdadm(8) command.
−d|−−dmoptions dm_options
Comma separated list of device-mapper specific options. Accepted dmsetup(8) options are:
|
retry |
Retry removal several times in case of failure. |
|||
|
force |
Force device removal. |
−e|−−errors
Show errors reported from tools called by blkdeactivate. Without this option, any error messages from these external tools are suppressed and the blkdeactivate itself provides only a summary message to indicate the device was skipped.
−h|−−help
Display the help text.
−l|−−lvmoptions lvm_options
Comma-separated list of LVM specific options:
|
retry |
Retry removal several times in case of failure. |
wholevg
Deactivate the whole LVM Volume Group when processing a Logical Volume. Deactivating the Volume Group as a whole is quicker than deactivating each Logical Volume separately.
−r|−−mdraidoptions mdraid_options
Comma-separated list of MD RAID specific options:
|
wait |
Wait MD device’s resync, recovery or reshape action to complete before deactivation. |
−m|−−mpathoptions mpath_options
Comma-separated list of
device-mapper multipath specific options:
disablequeueing
Disable queueing on all multipath devices before deactivation. This avoids a situation where blkdeactivate may end up waiting if all the paths are unavailable for any underlying device-mapper multipath device.
−o|−−vdooptions vdo_options
Comma-separated list of VDO
specific options:
configfile=file
Use specified VDO configuration file.
−u|−−umount
Unmount a mounted device before trying to deactivate it. Without this option used, a device that is mounted is not deactivated.
−v, −−verbose
Run in verbose mode. Use −vv for even more verbose mode.
Deactivate all
supported block devices found in the system, skipping
mounted devices.
# blkdeactivate
Deactivate all
supported block devices found in the system, unmounting any
mounted devices first, if possible.
# blkdeactivate −u
Deactivate the
device /dev/vg/lvol0 together with all its holders,
unmounting any mounted devices first, if possible.
# blkdeactivate −u /dev/vg/lvol0
Deactivate all
supported block devices found in the system. If the
deactivation of a device-mapper device fails, retry it.
Deactivate the whole Volume Group at once when processing an
LVM Logical Volume.
# blkdeactivate −u −d retry −l
wholevg
Deactivate all
supported block devices found in the system. If the
deactivation of a device-mapper device fails, retry it and
force removal.
# blkdeactivate −d force,retry
dmsetup(8), lsblk(8), lvm(8), mdadm(8), multipathd(8), vdo(8), umount(8)