blkdeactivate (8) Linux Manual Page
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.
-
- -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.
-
- -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.
-
- -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)