blkdeactivate man page

blkdeactivate — utility to deactivate block devices

Synopsis

blkdeactivate [-d dm_options] [-e] [-h] [-l lvm_options] [-m mpath_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, --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 to indicate the device was skipped.

-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 the Volume Group as a whole is quicker 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 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.

-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), umount(8)

Referenced By

lvchange(8), lvconvert(8), lvcreate(8), lvdisplay(8), lvextend(8), lvm(8), lvmconfig(8), lvmdiskscan(8), lvm-fullreport(8), lvm-lvpoll(8), lvreduce(8), lvremove(8), lvrename(8), lvresize(8), lvs(8), lvscan(8), pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8), pvscan(8), vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgconvert(8), vgcreate(8), vgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8), vgsplit(8).

LVM TOOLS 2.02.173(2) (2017-07-20) Red Hat, Inc