Server wipe tool for AIX and Linux Post: 302909350

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Top Forums UNIX for Advanced & Expert Users Server wipe tool for AIX and Linux Post 302909350 by rbatte1 on Wednesday 16th of July 2014 09:12:57 AM

07-16-2014

Moderator

I'd destroy the non-rootvg volume groups first with something like this:-for

Code:

vg in `lsvg |grep -Ev "^rootvg$"`
do
   # List and unmount filesystems
   lsvg -l $vg | grep "/" | while read a b c d e f mnt
   do
      echo $mnt
   done | sort -r | while read mnt        # Reverse sort to ensure sub-directories unmounted first
   do
      umount $mnt
   done

   # List disks and drop VG (forcing LV removal at same time)
   hdlist=
   lsvg -p $vg | grep hdisk | while read hd rest
   do
      hdlist="$hdlist $hd"
   done
   reducevg -f $vg $hdlist
done

This might hit problems if you have sibdirectories from other volume groups mounted under the ones you are trying to work on, but you are then pretty free to work with dd or the diag tools as suggested by Zaxxon. If you need to destroy the rootvg volume group, you will really need the console, from where you could boot from media and then run diag to format that device too or perhaps force a complete overwrite install onto the same disks.

Failing that, you can remove and degauss the disks or get them shredded. There are disposal contractors who will do this for you and you can get certification statements about device destruction with some detailing the serial numbers if you feel you need to go that far.

You then have to consider your backup media that you would use for a DR and destroy that too, else the server could be re-created. Again a disposal company can do this for you.

May I ask why you need to destroy everything and not just reuse the hardware? If you drop the logical volumes, then AIX will only create them empty again if you recreate them, even if you use the same disk blocks, the old data is not really available to you.

Robin

rbatte1

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LEARN ABOUT BSD

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)

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