topic Re: vgimport/change hangs machine in Operating System - HP-UX

vgimport/change hangs machine

Pete Devlin — Sat, 03 Nov 2001 12:45:01 GMT

We have a K580 6 way running 11 64 bit as part of a 2 node Service Guard Cluster. We keep coming accross an issue where, if disks on one side of a HASS are imported into any vg or created as new & vgchange is run the machine hangs or panics. We have rebuilt the machine several times now & have a new HSC card,SCSI cable, HASS backplane & even disks. This orginally showed it's head when the disks were configured as root mirrors - which worked but the machine became unbootable hence the rebuilds.
I've done a search & can't really find much about this. The partner machine is absolutely fine.

Re: vgimport/change hangs machine

harry d brown jr — Sat, 03 Nov 2001 12:54:34 GMT

Check the SCSI addressing, make sure you don't have two disks with the same ID. Also, replace your scsi terminators - they do fail. You don't have the two dies crossed over do you?

live free or die
harry

Re: vgimport/change hangs machine

Pete Devlin — Sat, 03 Nov 2001 13:54:26 GMT

We've changed the checked & chnaged (just for good measure!) the SCSI ID's & terminators. However we still have the same problem. We're now thinking it is almost certainly gonna be software related. I's weird that it happens even after system build.

Re: vgimport/change hangs machine

Sanjay_6 — Sat, 03 Nov 2001 20:27:22 GMT

Hi Pete,

Looks more likely as a patch issue. Are both your system at the same patch level. Another thing that i would suggest is replacing all the disks on that side of the hass and then try with addiing disks from that side one by one into the VG, then do a export and import. This will isolate a sigle disk, if that is giving the problem. I had a similar problem with one of my hass sitting between two 4 way k460's and i isolated the problem with one disk. I have kept that disk out of the VG and am using another set of disks for the time being, had a deadline to meet.

Hope this helps.

Regds.

Re: vgimport/change hangs machine

G. Vrijhoeven — Sun, 04 Nov 2001 19:34:55 GMT

Hi,
This is a long shot but you never know.
The hanging of a node could be coused by the removal of the cluster lock disk on one node. Check cluster configuration on one node and check the cluster lock disk (vg).

Succes Gideon