From: lars.rieneck@tellabs.com
Date: Tue Apr 13 2004 - 04:39:24 EDT
Hello all
Thanks to: Joachim Jaeckel, Martin Rønde Andersen, Bob Collins
For the very fine feedback
Problem: I have a 5.1B cluster with dupatch 3. To try our crash restore
procedure,
I have taken a full backup with vdump to tape. I have then zerorised all
disks including
the quorum disk. Booted on the UNIX cdrom, and restore the following
filedomians/filesets:
1) cluster_root#root
2) cluster_usr#usr
3) cluster_var#var
4) root1_domain#root
I then go to the boot prompt again, and try to start the first member by
booting, with the following command:
>>> boot -fl ai dkb100.1.0.15.0
I then boot with the following kernel parameters, to
be able to boot without a quorum disk:
Enter: <kernel_name> [option_1 ... option_n]
or: ls [name]['help'] or: 'quit' to return to console
Press Return to boot 'vmunix'
# vmunix clubase:cluster_expected_votes=1 clubase:cluster_qdisk_votes=0
The boot procedure starts, but stops after the following statements:
Waiting for cluster mount to complete
clsm: checking for peer configurations
clsm: initialized
CNX QDISK: Successfully claimed quorum disk, adding 0 vote.
Solution 1: From Bob Collins i got a restore procedure, to restore a
cluster on different hardware, that was very useful, Thanks.
Solution 2: When I boot on the UNIX cd-rom I got a different disk
naming, than
the restored unix had. So I had to rename the disk devices to the
correct
numbering according to the unix system i would like to restore.
Solution 3: When I make the backup of the cluster, the backup includes
the disklabels.
It is a good idea to keep the cnx partition on the member boot disk,
that spared me
from setting the cfs:cluster_root_dev1_min/maj values in the boot
sequence.
Solution 4: When the members in the cluster has to be booted, both
members MUST be
booted with the following commad: vmunix
clubase:cluster_expected_votes=1
clubase:cluster_qdisk_votes=0. When both members are up, the quorum has
to be deleted,
before it can created again.
/Lars
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