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Date:      Mon, 24 Apr 2000 13:48:22 -0700 (PDT)
From:      Matthew Jacob <mjacob@feral.com>
To:        sthaug@nethelp.no
Cc:        ken@kdm.org, freebsd-scsi@FreeBSD.ORG
Subject:   Re: Safe mounting of one file system on multiple hosts?
Message-ID:  <Pine.BSF.4.05.10004241348160.87772-100000@semuta.feral.com>
In-Reply-To: <72991.956601166@verdi.nethelp.no>

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Define 'problems'.

On Mon, 24 Apr 2000 sthaug@nethelp.no wrote:

> > I would recommend that you test out the controller carefully under high
> > load conditions if you have more than one array configured on it.
> > 
> > There have been a number of reports (see the list archives) about problems
> > with CMD RAID arrays with more than one LUN (i.e. more than one array)
> > configured.
> 
> I have two LUNs on one of the host channels, and I can easily provoke
> problems here (running a few copies of bonnie, for instance) with
> tagged queueing enabled. If I turn off tagged queueing on the host
> channel with multiple LUNs (as suggested by Oliver Blasnik
> <ob@omnilink.net>), there are no problems.
> 
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
> 
> 
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