PowerHA; Import flash copy of VG? Post: 302913215

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Operating Systems AIX PowerHA; Import flash copy of VG? Post 302913215 by bakunin on Thursday 14th of August 2014 01:53:56 PM

08-14-2014

Registered User

Many thanks for the follow-up.

Quote:

Originally Posted by j_aix

The only way to do this was to first remove the cluster definition, because when volumes are part of a cluster resource group, you need to use cluster commands to make changes so the cluster is aware.

Interesting. This should not be the case. I remove volumes and change volume groups actually all the time, in 6.x-clusters as well as in 7.x-clusters. To have one disk remain constant in a VG and do "learning import" (importvg -L) on the other node is usually all it takes.

I usually even replace disks completely by: adding the new disk, mirror, importvg on the passive node, then unmirror, reducevg, another importvg on the passive node. Not even a takeover or application touchdown is necessary that way.

Quote:

Originally Posted by j_aix

I could see the physical volume was still busy when trying to remove it, so I located the parent via:

Code:

lsdev -l hdisk1  -F parent

Turns out the fiber adapter was keeping the volume busy, this adapter is also used for the rootvg so disabling wasn't an option. A reboot was required.

Following the reboot I was able to remove the volume and add the newly flashed lun. Lastly I redefined the cluster, tested, success.

My "gut feeling" rather says the FC adapter was the culprit, not the cluster software. Anyways, i am glad you resolved it.

bakunin

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LEARN ABOUT CENTOS

lvmconf

LVMCONF(8)																LVMCONF(8)

NAME

       lvmconf - LVM configuration modifier

SYNOPSIS

       lvmconf [--disable-cluster] [--enable-cluster] [--file <configfile>] [--lockinglib <lib>] [--lockinglibdir <dir>]

DESCRIPTION

       lvmconf is a script that modifies the locking configuration in an lvm configuration file. See lvm.conf(5).

OPTIONS

       --disable-cluster
	      Set locking_type to the default non-clustered type. Also reset lvmetad use to its default.

       --enable-cluster
	      Set  locking_type  to  the  default clustered type on this system.  Also disable lvmetad use as it is not yet supported in clustered
	      environment.

       --file <configfile>
	      Apply the changes to configfile instead of the default /etc/lvm/lvm.conf.

       --lockinglib <lib>
	      Set external locking_library locking library to load if an external locking type is used.

       --lockinglibdir <dir>

FILES

       /etc/lvm/lvm.conf

SEE ALSO

       lvm(8), lvm.conf(5)

Red Hat, Inc					     LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26)						LVMCONF(8)