Power HA 7 repository disk unmirrored?


 
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Operating Systems AIX Power HA 7 repository disk unmirrored?
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Old 09-27-2011
Power HA 7 repository disk unmirrored?

hi guys,

I don't like the new concept of the power ha 7 cluster with the repository disk and the internal solidb, I really would like to mirror this disk, but the "IBM PowerHA SystemMirror 7.1 for AIX" redbook says, normal lvm operations should not be performed on this disk.
even mirroring the vg wont use much, because the hdisk device is configured directly to power ha, and not the vg.

well the cluster will run without the repository, and a new one can be specified, but with a downtime I guess, but that's not what I want for my clusters. no changes to the cluster can be made without it, even such as start/stop I guess.

everything is mirrored, a downtime of a whole storage side was no problem till now.
any thoughts on this? has anyone experienced the behaviour of a cluster in this situation?
of course I will test this on my own too, but I have no test system yet

cheers funksen
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mkqdisk(8)						      Quorum Disk Management							mkqdisk(8)

NAME
mkqdisk - Cluster Quorum Disk Utility WARNING
Use of this command can cause the cluster to malfunction. SYNOPSIS
mkqdisk [-?|-h] | [-L] | [-f label] [-c device -l label] [-d [-d ...]] DESCRIPTION
The mkqdisk command is used to create a new quorum disk or display existing quorum disks accessible from a given cluster node. OPTIONS
-c device -l label Initialize a new cluster quorum disk. This will destroy all data on the given device. If a cluster is currently using that device as a quorum disk, the entire cluster will malfunction. Do not run this on an active cluster when qdiskd is running. Only one device on the SAN should ever have the given label; using multiple different devices is currently not supported (it is expected a RAID array is used for quorum disk redundancy). The label can be any textual string up to 127 characters - and is therefore enough space to hold a UUID created with uuidgen(1). -f label Find the cluster quorum disk with the given label and display information about it. -L Display information on all accessible cluster quorum disks. -d Increase debugging level. Specify multiple times for more information. Currently, specifying more than twice has no effect. SEE ALSO
qdisk(5), qdiskd(8), uuidgen(1) July 2006 mkqdisk(8)