centos man page for blkdeactivate

BLKDEACTIVATE(8)														  BLKDEACTIVATE(8)

NAME
       blkdeactivate - utility to deactivate block devices

SYNOPSIS
       blkdeactivate [options] [device...]

DESCRIPTION
       blkdeactivate  utility deactivates block devices. If a device is mounted, the utility can unmount it automatically before trying to deacti-
       vate. The utility currently supports device-mapper devices, including LVM volumes.  LVM volumes are handled directly using the lvm command.
       Other device-mapper based devices are handled using the dmsetup command.

OPTIONS
       -e, --errors
	      Show errors reported from tools called by blkdeactivate.	Without this option, any error messages from these external tools are sup-
	      pressed and the blkdeactivate itself provides only a summary message about device being skipped or not.

       -h, --help
	      Display the help text.

       -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.

       -d, --dmoption dm_options
	      Comma separated list of device-mapper specific options.

       -l, --lvmoption lvm_options
	      Comma separated list of LVM specific options.

DM_OPTIONS
       retry  Retry removal several times in case of failure.

       force  Force device removal. See dmsetup(8) for more information.

LVM_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.

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
       lsblk(8) umount(8) dmsetup(8) lvm(8)

Red Hat, Inc					     LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26)					  BLKDEACTIVATE(8)