Folks-
Just started a new job where they have 100Gb and 200Gb disk
partitions on many machines. Unfortunately, there is only one
DLT7000 tape drive and a few DAT drives. Before I could back up
all of the large partitions, one crashed. As you expect, there
has never been a backup of that partition.
The crashed partition is an AdvFS domain ARRAY1#array1
composed of six 18Gb Quantum III drives attached to a Microway
dual alpha server running Tru64 5.0. There are six entries for
the six disks in the /etc/fdmns/ARRAY1 directory. When the disks
crashed, an AdvFS Domain Panic was generated. The ARRAY1 domain
won't mount.
I'm generally following section 7.5.3 of the AdvFS
Administration manual (Recovering From A Domain Panic).
I ran /sbin/advfs/savemeta on the ARRAY1 domain. The
metadata for the first three disks was saved OK. The fourth disk
gave "read number 0 from bitfile failed" and "read number 6 from
bitfile failed" errors. Disks number 5 and 6 give "No valid disk
label found on disk" errors.
The next step in the manual says to run /sbin/advfs/verify
on the ARRAY1 domain. If that fails, recover data from backup.
Failing that, then one should run the /sbin/advfs/salvage utility
to recover what can be recovered.
Question #1. Should I run the verify on ARRAY1 or just
jump right to the salvage utility? I've heard plenty of horror
stories about how running verify can wreck domains.
Question #2. Can I interpret the above savemeta results to
mean that disk #4 is trashed as well as disks #5 and #6?
Questions #3. Are there any special "gotchas" about running
the salvage routine? I'm thinking of dumping the salvage output
to Tar tape for later recovery. Does the salvage routine Tar
output correctly handle multiple tape output? What would the
"recovery" step entail? Do I just untar the tape onto another
AdvFS domain?
Thanks in advance for all help.
Mike
lizrdegg_at_ntrnet.net
Received on Wed Sep 20 2000 - 03:55:12 NZST