RAIDset problems on HSG80

Andrew Raine · *nix forums beginner Joined: 04 Oct 2002 Posts: 28

Dear Managers,

I'm hoping someone can help me recover my system without having to
restore from backups...?

We have a 2-node cluster (DS20 + ES40 + HSG80 storage, running Tru64
5.1Pk3) and, after a planned shutdown for some power work, it won't boot!

The cluster was shut down cleanly, but the HSG80 was not shutdown before
powering-off. I now see that the RAIDset containing root1_domain,
clu_quorum_dev, cluster_root, cluster_var, cluster_usr and root2_domain
is in a peculiar state:

HSG> show raid10
Name Storageset Uses Used by
------------------------------------------------------------------------------

RAID10 raidset DISK11000 D101
DISK21000 D102
DISK31000 D103
DISK41000 D104
DISK51000 D105
DISK61000 D106
Switches:
POLICY (for replacement) = BEST_PERFORMANCE
RECONSTRUCT (priority) = NORMAL
CHUNKSIZE = 256 blocks
State:
RECONSTRUCT 0% complete
DISK11000 (member 0) is RECONSTRUCTING 0% complete
DISK21000 (member 1) is RECONSTRUCTING 0% complete
DISK31000 (member 2) is RECONSTRUCTING 0% complete
DISK41000 (member 3) is RECONSTRUCTING 0% complete
DISK51000 (member 4) is RECONSTRUCTING 0% complete
DISK61000 (member 5) is RECONSTRUCTING 0% complete
Size: 355486275 blocks
Partitions:
Partition number Size Starting Block
Used by

---------------------------------------------------------------------
1 142193915 ( 72803.28 MB) 74650880 D104
2 71096315 ( 36401.31 MB) 216844800 D103
3 67545150 ( 34583.11 MB) 287941120
D105
HSG>

There ought to be 6 partitions on there!

Can anyone suggest a recovery strategy other than re-creating the
RAIDset and restoring from tape? Might there be any mileage in
deleteing and the re-creating the RAIDset without initialising, in the
hope that the data will still be on the disks?

Many thanks,

Andrew

--
Dr. Andrew Raine, Head of IT, MRC Dunn Human Nutrition Unit,
Wellcome Trust/MRC Building, Hills Road, Cambridge, CB2 2XY, UK
phone: +44 (0)1223 252830 fax: +44 (0)1223 252835
web: www.mrc-dunn.cam.ac.uk email: Andrew.Raine@mrc-dunn.cam.ac.uk

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