recovering a diskgroup for an lsm setup.

From: MacDonell, Dennis <DennisMacDonell_at_auslig.gov.au>
Date: Tue, 24 Apr 2001 20:10:50 +1000

Hi,

I have an old 3000 that has a number of disks attached to it. All disks are
lsmed, if that is the terminology, with their own LSMpubl and LSMpriv
partitions. I had switched off the machine for a while and when I rebooted
the machine, I had lost the datadg disk group. The rootdg disk group was
still around, but all trace of the datadg seemed to have vanished, the only
remnants that I could find were in the disklabels for the disks that made up
the datadg disk group and an entry in the fstab. volprint -A only returned
the rootdg members, no mention of datadg. Under /dev/vol there also was no
mention of datadg??

The machine has Tru64 V5.0, and the rootdg has been mirrored (that takes
care of dsk0 and dsk1), the rest of the disks (ie dsk2 thru dsk8) seem to
have taken a holiday. All disks are the same type of seagate 2gb disk.

I looked through my lsm notes and at my collection of summarys but could not
find anything that mentioned recovering or restoring from this situation.
The doco mentions volrestore, which works if you had done a volsave at some
stage, but alas. So I was wondering if anyone out there had the answer.

I was thinking of upgrading this machine, but Tru64 V5.0A appears to be the
end of the line for this model, so the potential benefits are probably
fairly slim. However, this may appear a little heavy handed, but I feel that
if I reload the OS, the setup will search for lsm setups and do a pretty
good job of restoring everything.

Dennis
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Dennis Macdonell
Systems Administrator
AUSLIG
mail: PO Box 2, Belconnen, ACT 2617
email: mcdonell_at_auslig.gov.au
ph: 61 2 6201 4326
fax: 61 2 6201 4377
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Received on Tue Apr 24 2001 - 10:12:18 NZST

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