02-03-2010
Yes, ever tried to run GNU xargs on a non-Linux system? Last time I tried I had quite some dependencies to pull in too. Sometimes it's not available in binary form, so you'll have to compile it from source (including everything else in the findutils package), suddenly realizing that GNU code relies heavily on GNU libc. My code only needs a compiler (any standard C compiler will suffice) and a C library (again, any will suffice as long as POSIX is supported).
Also, in contrast to xargs, you're allowed to run more than 1 command in parallel. You could, for example, create gzip, bzip2, and LZMA compressed archives at the same time. Try that with xargs alone.
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LEARN ABOUT MOJAVE
vgreduce
VGREDUCE(8) System Manager's Manual VGREDUCE(8)
NAME
vgreduce - reduce a volume group
SYNOPSIS
vgreduce [-a|--all] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--removemissing] [-t|--test] [-v|--verbose] VolumeGroupName [Physi-
calVolumePath...]
DESCRIPTION
vgreduce allows you to remove one or more unused physical volumes from a volume group.
OPTIONS
See lvm for common options.
-a, --all
Removes all empty physical volumes if none are given on command line.
--removemissing
Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those. This resumes normal
operation of the volume group (new logical volumes may again be created, changed and so on).
If this is not possible (there are logical volumes referencing the missing physical volumes) and you cannot or do not want to remove
them manually, you can run this option with --force to have vgreduce remove any partial LVs.
Any logical volumes and dependent snapshots that were partly on the missing disks get removed completely. This includes those parts
that lie on disks that are still present.
If your logical volumes spanned several disks including the ones that are lost, you might want to try to salvage data first by acti-
vating your logical volumes with --partial as described in lvm (8).
SEE ALSO
lvm(8), vgextend(8)
Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGREDUCE(8)