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BLKDEACTIVATE(8)                                              BLKDEACTIVATE(8)



NAME
       blkdeactivate -- utility to deactivate block devices

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

DESCRIPTION
       blkdeactivate  utility  deactivates block devices. If a device is mounted, the utility can unmount it automati-
       cally 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  about
              device being skipped or not.

       -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 Volume
                     Group as a whole takes less time 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 first before deactivation.   This  avoids  a  situation
                     where  blkdeactivate  may  end up waiting if all 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. If a device is mounted, skip its deactivation.

       blkdeactivate

       Deactivate  all supported block devices found in the system. If a device is mounted, unmount it first if possi-
       ble.

       blkdeactivate -u

       Deactivate supplied device together with all its holders. If any of the devices processed is  mounted,  unmount
       it first if possible.

       blkdeactivate -u /dev/vg/lvol0

       Deactivate all supported block devices found in the system. Retry deactivation of device-mapper devices in case
       the deactivation fails. 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. Retry deactivation of device-mapper devices in case
       the deactivation fails 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 2.02.143(2)-RHEL6 (2016-12-13)   BLKDEACTIVATE(8)