blkdeactivate(8) - Linux man page

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 deactivate. 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

-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.
-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