Recovering LSM/AdvFS-based data from a failed system

From: Greg Merrell (greg@netuser.com)
Date: Sat Jun 15 2002 - 22:22:49 EDT


Fellow DEC-OSF1/Digital Unix/HP-Compaq Tru64 fans,

I have a Tru64 V5.0A system that ran LSM mirrored drives and the system
failed.
I have another Tru64 V5.0A system freshly installed on which I've connected
one of the old drives and I'd like to mount the old /usr and /var partitions
(AdvFS format) to recover data created since the last back-up.

I've printed out the information from the AdvFS manual that describes how to
associate the volume with a new fdmns entry to get it mounted. But upon
looking through the LSM docs, I couldn't see anything that was obvious as to
what I've got to do to associate the old drives with the new recovery
system. Can I just do these AdvFS steps and ignore LSM or do I need to do
something extra?

 1) Create an entry for the (new) domain in /etc/fdmns with the mkdir
command
 2) Using ln -s, create a symbolic link for all volumes in the domain
 3) Edit /etc/fstab to permit automatic mounting at boot time (-ro in my
case)

Both systems are simple: / (a), swap (b), /usr (g), /var (h) partitions all
in the rootdg on a single physical drive.

Before I try it and destroy the data in the process, I thought I'd check for
advice. Recommendations most welcome. :-)

Thanks,

Greg
Netuser Communications



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