Thank you to all who replied ... as always I am in debt. Susan
Clower Allen hit
it right now the head ... the disks were being seen by both controllers and
majorly confused. Here is the original posting followed by Susan's
I am trying to help a friend and I really don't have all the technical
details but I am going
to give it a shot anyways ...
He has an EMC disk array that he has an 800 series attached to using fast-wide
differential controllers. lvm is having a heck of a time communicating with
the disks on
both controllers. EMC says the array is fine. If we bypass lvm and just
mount the whole
disk it works. The disk is accessible.
-Has anybody ever seen these problems with LVM and EMC disks before?
-Thanks in advance
>X-Authentication-Warning: duncan.cs.utk.edu: sallen owned process doing -bs
>Date: Tue, 21 Mar 2000 10:47:02 -0500 (EST)
>From: Susan Clower Allen <firstname.lastname@example.org>
>To: mark cormier <email@example.com>
>Subject: Re: [HPADM] EMC and lvm ...
>You need to make certain that the disks / hypervolumes are not
>duplicated in the volume group. With the emc system, you can "see" the
>same disk on two or more ports. A common error is to do a vgcreate with
>one port's device file, then a vgcreate with another port's device file.
> This would in effect make the same disk part of two volume groups. The
>only way to uniquely identify the drive/hypervolume is to execute a
>program called "inq". It is available on EMC's web site. It will
>report the actual serial number of the disk and the device files. You
>can then verify the device files existance in the volume group. It is
>tedious work at best, but good luck.
>On Tue, 21 Mar 2000, mark cormier
> > Hello admins,
> > I am trying to help a friend and I really don't have all the
> > details but I am going
> > to give it a shot anyways ...
> > He has an EMC disk array that he has an 800 series attached to
> using fast-wide
> > differential controllers. lvm is having a heck of a time communicating
> > with the disks on
> > both controllers. EMC says the array is fine. If we bypass lvm and just
> > mount the whole
> > disk it works. The disk is accessible.
> > -Has anybody ever seen these problems with LVM and EMC disks before?
> > -Thanks in advance
> > -Mark Cormier
> > ------------------
> > Mark Cormier - MCSE / Unix System Administrator
> > Harvard University
> > firstname.lastname@example.org
> > (617)495-2492
> > --
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Mark Cormier - MCSE / Unix System Administrator
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