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Date:      Tue, 18 Mar 2003 11:28:19 +0000
From:      Scott Mitchell <scott+freebsd@fishballoon.org>
To:        "Greg 'groggy' Lehey" <grog@FreeBSD.org>
Cc:        freebsd-questions@FreeBSD.org
Subject:   Re: Strange crash, possibly vinum-related
Message-ID:  <20030318112819.GA33972@tuatara.fishballoon.org>
In-Reply-To: <20030317235236.GH9422@wantadilla.lemis.com>
References:  <20030310231532.GD522@tuatara.fishballoon.org> <20030317105828.GA23237@tuatara.fishballoon.org> <20030317235236.GH9422@wantadilla.lemis.com>

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On Tue, Mar 18, 2003 at 10:22:36AM +1030, Greg 'groggy' Lehey wrote:
> On Monday, 17 March 2003 at 10:58:28 +0000, Scott Mitchell wrote:
> > On Mon, Mar 10, 2003 at 11:15:32PM +0000, Scott Mitchell wrote:
> >
> > No takers? 
> 
> I've been intending to do so, but there's not much I can do based on
> the information you've supplied.

Hi Greg,

Thanks for replying -- I didn't bother you personally with this before
precisely because I didn't think I had enough information there to diagnose
the problem fully.  Is there anything in particular I can send you that
might help?

> > Maybe someone who's done this (replacing a failed Vinum drive on
> > hot-swap SCSI hardware) before can at least tell me whether:
> >
> > 	- I should have done some camcontrol magic before rebuilding
> >         the drive?
> 
> I can't see anything in particular you would need to do, but then I
> haven't seen the details.

I guess it wouldn't have hurt to do a 'camcontrol rescan' after plugging
the new drive.  Disklabel seemed perfectly happy, so it didn't occur to me
until much later that I hadn't done that.

> > 	- Rebuilding the drive without unmounting the volume first was
> > 	just asking for trouble?
> 
> There have been reports of this kind of problem, mainly from Vallo
> Kallaste, who has also responded.  I haven't seen it myself, and I
> haven't heard of panics as a result.  But yes, umounting is a good
> precaution.

I've added that to my checklist for next time :-)

Please let me know if there's any other logs you'd like to see or anything
else I can try.  I'm actually planning to set up a very similar array on
another identical machine once 4.8 is released, so there's a window for
experimentation there, on a non-production machine.

Thanks again,

	Scott

-- 
===========================================================================
Scott Mitchell           | PGP Key ID | "Eagles may soar, but weasels
Cambridge, England       | 0x54B171B9 |  don't get sucked into jet engines"
scott at fishballoon.org | 0xAA775B8B |      -- Anon

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