Linux "blkdeactivate" Command Line Options and Examples

utility to deactivate block devices

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.

Usage:

blkdeactivate [-d dm_options] [-e] [-h] [-l lvm_options] [-m mpath_options] [-r mdraid_options] [-u] [-v] [device]

Related Commands

Command Line Options:

-d

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.


                            blkdeactivate -d ...

-e

Show errors reported from tools called by blkdeactivate. Without this option, any error messages from these external tools aresuppressed and the blkdeactivate itself provides only a summary message to indicate the device was skipped.


                            blkdeactivate -e ...

-h

Display the help text.


                            blkdeactivate -h ...

-l

Comma-separated list of LVM specific options:retry Retry removal several times in case of failure.wholevgDeactivate the whole LVM Volume Group when processing a Logical Volume. Deactivating the Volume Group as a whole isquicker than deactivating each Logical Volume separately.


                            blkdeactivate -l ...

-m

Comma-separated list of device-mapper multipath specific options:disablequeueingDisable queueing on all multipath devices before deactivation. This avoids a situation where blkdeactivate may end upwaiting if all the paths are unavailable for any underlying device-mapper multipath device.


                            blkdeactivate -m ...

-r

Comma-separated list of MD RAID specific options:wait Wait MD device's resync, recovery or reshape action to complete before deactivation.


                            blkdeactivate -r ...

-u

Unmount a mounted device before trying to deactivate it. Without this option used, a device that is mounted is not deacti‐vated.


                            blkdeactivate -u ...

-v

Run in verbose mode. Use --vv for even more verbose mode.EXAMPLESDeactivate all supported block devices found in the system, skipping mounted devices. # blkdeactivateDeactivate all supported block devices found in the system, unmounting any mounted devices first, if possible. # blkdeactivate -uDeactivate the device /dev/vg/lvol0 together with all its holders, unmounting any mounted devices first, if possible. # blkdeacti‐vate -u /dev/vg/lvol0Deactivate all supported block devices found in the system. If the deactivation of a device-mapper device fails, retry it. Deactivatethe whole Volume Group at once when processing an LVM Logical Volume. # blkdeactivate -u -d retry -l wholevgDeactivate all supported block devices found in the system. If the deactivation of a device-mapper device fails, retry it and forceremoval. # blkdeactivate -d force,retry


                            blkdeactivate -v ...