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Operating Systems AIX Logical volume name conflict in two volume group Post 302377815 by bakunin on Saturday 5th of December 2009 09:36:02 AM
Old 12-05-2009
Quote:
Originally Posted by dantares
After some research I think the command synclvodm could solve the problem of name conflict by renaming the logical volume automatically by default.
Unfortunately i don't think so. "synclvodm" updates the contents of the ODM with the data of the VGDA (volume group descriptor area) and the LVCB (logical volume control block), nothing more, nothing less. You have this name conflict in the physical configuration (your VG/LV information as it is stored on disk) and your problem is not that the ODM contains other data than your disks. Therefore "synclvodm" will most likely not help you at all.

I'd try the following, which needs some downtime, but should be save. CAUTION: I cannot recreate your problem condition on the fly so the following is UNTESTED:

- use "varyoffvg" to completely unmount both of the VGs containing the conflicting LV.

- Use "exportvg" to get both VGs completely out of the system configuration.

- then use "synclvodm" to get a clean system configuration in the ODM

- "importvg" and "varyonvg" one of the VGs and delete the offending LV (you said you want to delete one of them anyways, but of course you could recreate and copy it under a different name to remove the conflict)

- "importvg" the other VG

The name conflict should be removed.

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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