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From: daveh@xtenk.asd.sgi.com (David A Higgen)
Newsgroups: comp.sys.sgi
Subject: Re: Logical volumes
Message-ID: <71322@sgi.sgi.com>
Date: 5 Oct 90 23:35:07 GMT
References: <1990Oct5.200050.28273@cid.aes.doe.CA>
Sender: guest@sgi.sgi.com
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 21

In article <1990Oct5.200050.28273@cid.aes.doe.CA>, aspgasd@cid.aes.doe.CA (Alain St-Denis) writes:
> 
> We are planning to upgrade to IRIX 3.3.1 very soon now and we want to use
> the logical volume feature.  So I read all I found about it in the admin
> guide and the reference man.  One question arose for which I couldn't find
> any answer: Suppose a logical volume that contains two disks.  What would
> be the procedure to restore a logical volume in the event of a disk
> failure?  

There is really no "special" way to restore a logical volume if a component
disk crashes. You have to regard the whole volume as effectively one disk, and
proceed as you would if a regular disk crashes: repair the disk, make a new
filesystem, and restore from backups.

In the logical volume case, there would need to be one additional step before the
mkfs: running lvck to restore the logical volume label on the repaired disk (to
re-identify it as part of the logical volume).



			Dave Higgen (daveh@xtenk.asd.sgi.com)