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Full Discussion: Expand LV
Operating Systems AIX Expand LV Post 302749433 by bakunin on Friday 28th of December 2012 09:24:29 AM
Old 12-28-2012
Quote:
Originally Posted by markper
As I recall, AIX can expand the FS on the fly, correct?
If you mean by "on the fly" online: yes, AIX neither requires a recreation of the FS nor do you have to unmount it, you can do it safely while fully accessing the FS.

If you increase the FS AIX will automatically increase the underlying LV too, so you could use "chfs" without even touching the underlying LV. Increasing the LV prior to increasing the FS gives you just better control over the allocation of the PPs used to increase the size of the LV. If you want to use specific PPs from a certain disks (out of several possible ones) you better increase the LV by hand and only then enlarge the FS, otherwise you can immediately enlarge the FS.

I hope this helps.

bakunin
 

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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)
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