Name
blkdeactivate \(em utility to deactivate block devicesSynopsis
blkdeactivate [ -ddm_options ] [ -e ] [ -h ] [ -l lvm_options ] [ -m mpath_options ] [ -r mdraid_options ] [ -o vdo_options ] [ -u ] [ -v ] [ device ] Description
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.Options
-d | --dmoptions " " dm_optionsComma 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 | --errorsShow 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 | --helpDisplay the help text.
-l | --lvmoptions " " lvm_optionsComma-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_optionsComma-separated list of MD RAID specific options:
wait Wait MD device's resync, recovery or reshape action to complete before deactivation.
-m | --mpathoptions " " mpath_optionsComma-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_optionsComma-separated list of VDO specific options:
configfile = fileUse specified VDO configuration file.
-u | --umountUnmount a mounted device before trying to deactivate it. Without this option used, a device that is mounted is not deactivated.
-v ", " --verboseRun in verbose mode. Use -vv for even more verbose mode.
Examples
Deactivate all supported block devices found in the system, skipping mounted devices. # blkdeactivateDeactivate 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