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:

              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.

       -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)

Red Hat, Inc                           LVM TOOLS 2.02.176(2) (2017-11-03)                       BLKDEACTIVATE(8)