BLKDEACTIVATE - Online Linux Manual PageSection : 8
Updated : LVM TOOLS 2.03.18(2)-git (2022-11-10)
Source : Red Hat, Inc
Note : "
NAME blkdeactivate — utility to deactivate block devices
SYNOPSIS blkdeactivate [−d dm_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_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.
EXAMPLES 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
SEE ALSO dmsetup(8), lsblk(8), lvm(8), mdadm(8), multipathd(8), vdo(8), umount(8) 0
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