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blkdeactivate - utility to deactivate block devices Traverses the tree of block devices and tries to deactivate them. Currently, it supports device-mapper-based devices together with LVM. See man/blkdeactivate.8 for more info. It is targeted for use during shutdown to properly deactivate the whole block device stack - systemd and init scripts are provided as well. However, it might be used directly on command line too. Please, see the commentary at the top of the blkdeactivate script for dependencies and versions of other utilities required.
73 lines
2.4 KiB
Groff
73 lines
2.4 KiB
Groff
.TH "BLKDEACTIVATE" "8" "LVM TOOLS #VERSION#" "Red Hat, Inc" "\""
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.SH "NAME"
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blkdeactivate \- utility to deactivate block devices
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.SH SYNOPSIS
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.B blkdeactivate
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.RI [ options ]
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.RI [ device... ]
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.sp
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.SH DESCRIPTION
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blkdeactivate utility deactivates block devices. If a device
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is mounted, the utility can unmount it automatically before
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trying to deactivate. The utility currently supports
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\fIdevice-mapper\fP devices, including \fILVM\fP volumes.
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LVM volumes are handled directly using the \fIlvm\fP command.
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Other device-mapper based devices are handled using the
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\fIdmsetup\fP command.
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.SH OPTIONS
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.IP "\fB\-h, \-\-help\fP"
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Display the help text.
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.IP "\fB\-u, \-\-umount\fP"
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Unmount a mounted device before trying to deactivate it.
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Without this option used, a device that is mounted is not deactivated.
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.IP "\fB\-d, \-\-dmoption\fP \fIdm_options\fP"
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Comma separated list of device-mapper specific options.
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.IP "\fB\-l, \-\-lvmoption\fP \fIlvm_options\fP"
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Comma separated list of LVM specific options.
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.SH DM_OPTIONS
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.IP "\fBretry\fP"
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Retry removal several times in case of failure.
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.IP "\fBforce\fP"
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Force device removal. See \fBdmsetup\fP(8) for more information.
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.SH LVM_OPTIONS
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.IP "\fBretry\fP"
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Retry removal several times in case of failure.
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.IP "\fBwholevg\fP"
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Deactivate the whole LVM Volume Group when processing a Logical Volume.
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Deactivating Volume Group as a whole takes less time than deactivating
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each Logical Volume separately.
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.SH EXAMPLES
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.sp
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Deactivate all supported block devices found in the system. If a device
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is mounted, skip its deactivation.
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.sp
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.B blkdeactivate
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Deactivate all supported block devices found in the system. If a device
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is mounted, unmount it first if possible.
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.sp
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.B blkdeactivate \-u
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Deactivate supplied device together with all its holders. If any of the
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devices processed is mounted, unmount it first if possible.
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.sp
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.B blkdeactivate \-u /dev/vg/lvol0
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Deactivate all supported block devices found in the system. Retry deactivation
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of device-mapper devices in case the deactivation fails. Deactivate the whole
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Volume Group at once when processing an LVM Logical Volume.
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.sp
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.B blkdeactivate \-u -d retry -l wholevg
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Deactivate all supported block devices found in the system. Retry deactivation
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of device-mapper devices in case the deactivation fails and force removal.
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.sp
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.B blkdeactivate -d force,retry
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.SH SEE ALSO
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.BR lsblk (8)
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.BR umount (8)
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.BR dmsetup (8)
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.BR lvm (8)
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