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From: Matthias Julius <jnews@julius-net.net>
Date: Wed, 02 Mar 2005 13:25:29 -0500
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Subject: [linux-lvm] Re: Having duplicate PV problems,
 think there's a bug in LVM2 md component detection
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"Ron Watkins" <linux-lvm@malor.com> writes:

> I'm sorry if this is a FAQ or if I'm being stupid.  I saw some
> mentions to this problem on the old mailing list, but it didn't seem
> to quite cover what I'm seeing, and I don't see an archive for this
> list yet.  (and what on earth happened to the old list, anyway?)
>
> My problem is this:  I'm setting up a software RAID5 across 5 IDE
> drives. I'm running Debian Unstable, using kernel 2.6.8-2-k7.   I HAVE
> set md_component_detection to 1 in lvm.conf, and I wiped the drives
> after changing this setting.

I just had the same problem.  As a workaround I set up a filter in
lvm.conf in devices{} like:

filter = [ "a|^/dev/md.*|", "r/.*/" ]

And that works fine.

Matthias