blkdeactivate(8)
NAME
blkdeactivate --- utility to deactivate block devices
SYNOPSIS
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
SEE ALSO
dmsetup(8), lsblk(8), lvm(8), mdadm(8), multipathd(8), umount(8)
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