11-05-2015
RH Switching rootvg/sanvg to New SAN
Hi, what's the safest procedure to reconfigure RH BFS to a new SAN?
Current setup boots rootvg and sanvg from a SAN.
Now a new SAN LUN is presented to the Linux Server.
The first and second SAN are srdf'd - so they are always in sync.
Can I re-use the existing LVM structure and somehow switch the underlying devices to the new LUNs?
Or, do I have to start from scratch, create new luns, re-build LVM, and re-install RH?
Urgent - this is scary. Thanks.
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LEARN ABOUT DEBIAN
mkqdisk
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)