blkdeactivate (8)
NAME
blkdeactivate --- utility to deactivate block devicesSYNOPSIS
blkdeactivate [-d dm_options] [-e] [-h] [-l lvm_options] [-m mpath_options] [-u] [-v] [device]DESCRIPTION
blkdeactivate utility deactivates block devices. If a device is mounted, the utility can 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, --dmoption 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 about device being skipped or not.
- -h, --help
- Display the help text.
- -l, --lvmoption 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 Volume Group as a whole takes less time than deactivating each Logical Volume separately.
-
- -m, --mpathoption mpath_options
-
Comma separated list of device-mapper multipath specific options:
-
- disablequeueing
- Disable queueing on all multipath devices first before deactivation. This avoids a situation where blkdeactivate may end up waiting if all paths are unavailable for any underlying device-mapper multipath device.
-
- -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.
EXAMPLES
Deactivate all supported block devices found in the system. If a device is mounted, skip its deactivation.
blkdeactivate
Deactivate all supported block devices found in the system. If a device
is mounted, unmount it first if possible.
blkdeactivate -u
Deactivate supplied device together with all its holders. If any of the
devices processed is mounted, unmount it first if possible.
blkdeactivate -u /dev/vg/lvol0
Deactivate all supported block devices found in the system. Retry deactivation
of device-mapper devices in case the deactivation fails. 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. Retry deactivation
of device-mapper devices in case the deactivation fails and force removal.
blkdeactivate -d force,retry