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Operating Systems Linux Red Hat Move a LUN from one server to the other Post 303013188 by rbatte1 on Friday 16th of February 2018 12:49:57 PM
Old 02-16-2018
Since you had the LUN added, have you re-scanned for devices (or rebooted). This link talks about CentOS7, but it should be pretty much the same. Perhaps the command kudzu might be an option too for RHEL5.

I find I always need to re-scan to get new/enlarged LUNs reflected in the OS.

I suspect that the LUN is not yet showing up, hence the confusion of the two disks you do have. I think that they are both local, one a simple disk, one a RAID device.



Robin
 

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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)
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