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42e76a1920
blkdeactivate -m disablequeueing causes "multipathd disablequeueing maps" call inside blkdeactivate script before deactivating devices. This avoids a situation where blkdeactivate may wait for paths to appear if multipath is set to queueing and there's a stack of other devices and/or mount points on top of such multipath device. See also https://bugzilla.redhat.com/show_bug.cgi?id=1344381.
106 lines
3.3 KiB
Groff
106 lines
3.3 KiB
Groff
.TH "BLKDEACTIVATE" "8" "LVM TOOLS #VERSION#" "Red Hat, Inc" "\""
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.SH "NAME"
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blkdeactivate \(em utility to deactivate block devices
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.SH SYNOPSIS
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.B blkdeactivate
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.RB [ \-d \ \fIdm_options\fP ]
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.RB [ \-e ]
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.RB [ \-h ]
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.RB [ \-l \ \fIlvm_options\fP ]
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.RB [ \-m \ \fImpath_options\fP ]
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.RB [ \-u ]
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.RB [ \-v ]
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.RI [ device ]
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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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device-mapper devices (DM), including LVM volumes and
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software RAID MD devices. LVM volumes are handled directly
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using the \fBlvm\fP(8) command, the rest of device-mapper
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based devices are handled using the \fBdmsetup\fP(8) command.
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MD devices are handled using the \fBmdadm\fP(8) command.
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.SH OPTIONS
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.TP
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.BR \-d ", " \-\-dmoption \ \fIdm_options\fP
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Comma separated list of device-mapper specific options.
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Accepted \fBdmsetup\fP(8) options are:
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.RS
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.IP \fIretry\fP
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Retry removal several times in case of failure.
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.IP \fIforce\fP
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Force device removal.
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.RE
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.TP
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.BR \-e ", " \-\-errors
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Show errors reported from tools called by \fBblkdeactivate\fP. Without this
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option, any error messages from these external tools are suppressed and the
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\fBblkdeactivate\fP itself provides only a summary message about device being
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skipped or not.
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.TP
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.BR \-h ", " \-\-help
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Display the help text.
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.TP
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.BR \-l ", " \-\-lvmoption \ \fIlvm_options\fP
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Comma separated list of LVM specific options:
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.RS
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.IP \fIretry\fP
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Retry removal several times in case of failure.
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.IP \fIwholevg\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 each
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Logical Volume separately.
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.RE
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.TP
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.BR \-m ", " \-\-mpathoption \ \fImpath_options\fP
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Comma separated list of device-mapper multipath specific options:
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.RS
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.IP \fIdisablequeueing\fP
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Disable queueing on all multipath devices first before deactivation.
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This avoids a situation where blkdeactivate may end up waiting if
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all paths are unavailable for any underlying device-mapper multipath
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device.
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.RE
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.TP
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.BR \-u ", " \-\-umount
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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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.TP
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.BR \-v ", " \-\-verbose
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Run in verbose mode. Use \-\-vv for even more verbose mode.
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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 dmsetup (8),
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.BR lsblk (8),
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.BR lvm (8),
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.BR mdadm (8),
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.BR multipathd (8),
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.BR umount (8)
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