NAME¶

blkdeactivate — utility to deactivate block devices

SYNOPSIS¶

blkdeactivate [-d dm_options] [-e] [-h] [-l lvm_options] [-m mpath_options] [-r mdraid_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:

-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:

-m, --mpathoptions mpath_options

Comma-separated list of device-mapper multipath specific options:

-r, --mdraidoptions mdraid_options

Comma-separated list of MD RAID specific options:

-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)