logical volume partially mirrored Post: 302206620

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Operating Systems AIX logical volume partially mirrored Post 302206620 by bakunin on Wednesday 18th of June 2008 05:53:58 AM

06-18-2008

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The paging space (at least one paging space) should remain on rootvg, as this is the volume group activated and mounted first on boot time. The machine needs to hve access to at least one paging space during boot.

You could delete the other swapspaces and create them anew on some SAN disk. Notice that all swap spaces should be of equal size: AIX uses them in a round-robin-schema. If you want to make the swap faster create more swapspaces and put all but one of them on the SAN storage. Do NOT create one big swap on the SAN and a small one in the rootvg, as is oftenly seen.

If the Websphere LV should be on rootvg or not is a matter of taste: some claim, that binaries should go along with the OS and only data should be on SAN storage. Others claim that binaries should reside with the data they work on.

In your case it is still not clear where the error comes from, as aside from the error everything looks normal. Maybe the error report (issue "errpt" and "errpt -a" respectively) might tell you something.

If you can, back up the LV, delete it and create it anew, then restore the data. Another possibility would be to backup the LV, create a new LV somewhere else, restore the data to it, then umount the original and mount the new one - takes 1 minute and an application restart.

Don't care if this is a production machine when proposing a downtime: if the management of the data center hasn't provided for some maintenance downtime then the management has made a GRAVE CONCEPTUAL error - it is well known that machines do not run for an infinite time - period. So it is their fault, not yours. You are just pointing it out. They may wince and they may whine, but in the end you'll get your downtime.

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LEARN ABOUT OPENSOLARIS

lvremove

LVREMOVE(8)                                                   System Manager's Manual                                                  LVREMOVE(8)

NAME

       lvremove - remove a logical volume

SYNOPSIS

       lvremove  [-A|--autobackup  {y|n}]  [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [-f|--force] [--noudevsync] LogicalVol-
       ume{Name|Path} [LogicalVolume{Name|Path}...]

DESCRIPTION

       lvremove removes one or more logical volumes.  Confirmation will be requested before  deactivating  any  active  logical  volume  prior  to
       removal.   Logical  volumes  cannot be deactivated or removed while they are open (e.g. if they contain a mounted filesystem).  Removing an
       origin logical volume will also remove all dependent snapshots.

       If the logical volume is clustered then it must be deactivated on all nodes in the cluster before it can be removed. A single lvchange com-
       mand issued from one node can do this.

OPTIONS

       See lvm(8) for common options.

       -f, --force
              Remove active logical volumes without confirmation.

       --noudevsync
              Disable  udev  synchronisation. The process will not wait for notification from udev.  It will continue irrespective of any possible
              udev processing in the background.  You should only use this if udev is not running or has rules that ignore the devices  LVM2  cre-
              ates.

EXAMPLES

       Remove the active logical volume lvol1 in volume group vg00 without asking for confirmation:

       lvremove -f vg00/lvol1

       Remove all logical volumes in volume group vg00:

       lvremove vg00

SEE ALSO

       lvcreate(8), lvdisplay(8), lvchange(8), lvm(8), lvs(8), lvscan(8), vgremove(8)

Sistina Software UK                                      LVM TOOLS 2.02.95(2) (2012-03-06)                                             LVREMOVE(8)

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