First some history; we have a customer that will be implementing Clustering between 2 physical system that will share some storage on a SAN. One system was already running RHEL 5.8 32-bit and they are upgrading to RHEL 6.3 64-bit over all. So on
the second system a RHEL 6.3 64-bit KickStart provided by us was installed. Our instructions stated to disconnect the system from the SAN before doing the KickStart, but they did not. The system has local storage for the OS and the OS was installed on it as
it should have been. But because the SAN was connected and the LUNs zoned to the system, the KickStart identified the multiple paths to the LUNs and enabled multipathd, ran pvcreate on the /dev/mapper/mpath* names which over wrote the existing header/labels
on each LUN and put new uuid on each and cleared the LVM label information. On the system running RHEL 5.8 the VG and the LV could still be access but all command such as lvs, pvs and vgs would not show information because of the missing LVM labels.
We had to reboot the active system and then run pvcreate with the –uuid option to put the correct uuid back in place on each LUN, there were 16 of them. And then run vgcfgrestore on the VG and everything is fine now.
Once the RHEL 6.3 64-bit system is working properly the RHEL 5.8 32-bit system will be brought down and the SAN storage will be accessed from the RHEL 6.3 64-bit system. Then the RHEL 6.3 64-bit KickStart will be run on the old RHEL 5.8 32-bit
system to upgrade it, which means both systems will be running RHEL 6.3 64-bit and the Cluster software will be activated.
So what option or whatever can be specified in the KickStart to not automatically scan for SAN storage and enable multipathd and run pvcreate?
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Jackson C. Allen
McKesson Provider Technologies
5995 Windward Parkway
Alpharetta, GA 30005
(404) 338-2023
Jack.Allen@xxxxxxxxxxxx
Jackson C. Allen
McKesson Provider Technologies
5995 Windward Parkway
Alpharetta, GA 30005
(404) 338-2023
Jack.Allen@xxxxxxxxxxxx
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