🚀 go-pugleaf

In <31571b42.959100@news.execpc.com>, emjay@execpc.com (Tom Kustner) writes:
>We had an experience this weekend that caused us to have to recreate a
>NetWare partition and restore from backups.  We're back up and
>running, but we'd like to ask a few questions:
>
>1.  Can/should we run VREPAIR while the volume is re-mirroring?
>Common sense would say "No", but the vendor said it was OK.

You probably "can", but I wouldn't recommend it. During one of the
BrainShare sessions I was at last year, the presenter explicitly
recommended removing the mirror, then running vrepair, and re-mirroring the
disks once everything was ok.

>2.  Can/should we ever do restores while the volumes are re-mirroring?
>Again, common sense says "No", but the vendor said it was OK.

He didn't address this, but I'd say that it was the same as Vrepair. Yeah,
you probably *can* do it, but I don't think it's a good idea.

>Pointers to official Novell statements would be appreciated, since up
>until now, I haven't been able to find any documentation on doing this
>kind of stuff.  The FAQ says nothing either (or I completely missed
>it).  Thanks.

Nothing official (printed) that I know of, but from SI201A Abend Recovery,
BrainShare '95, this is what I wrote in my notes:

When running VREPAIR, recommend breaking the mirror on mirrored/duplexed
  volumes. Fix one set, then re-mirror. Can use the broken mirror to try
  other recovery options if needed. Also halves the disk i/o required, so
  should run faster. Remirror after repair.

The presenter was Dana Henriksen (I think that's spelled right). Also
according to my notes, he is the original programmer for VREPAIR.NLM.
Though he is no longer responsible for its maintenance, I tend to take his
word for it when he talks about how it works and how it should be used.


======================================================================
David Gersic                                           dgersic@niu.edu
Systems Programmer
Northern Illinois University