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Date:      Sat, 17 Nov 2001 09:54:14 -0800 (PST)
From:      Matthew Jacob <mjacob@feral.com>
To:        Ian Dowse <iedowse@maths.tcd.ie>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/cam/scsi scsi_da.c 
Message-ID:  <Pine.BSF.4.21.0111170953050.57260-100000@beppo>
In-Reply-To: <200111171734.aa67312@salmon.maths.tcd.ie>

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> In message <Pine.BSF.4.21.0111170856380.6462-100000@beppo>, Matthew Jacob write
> s:
> >Do they really really hang, or does it simply take a very very long time to
> >flush out the cache on an MO?
> 
> >From the PR:
> 
> >>Description:
> >Fujitsu MO drives M2513A hang at various operations due to the synchronize cache
> >command (actually, after a few minutes the bus is reset and the disk can be
> >ejected).
> 
> That's all the information I have - the mention of the bus resetting
> suggests that it is more than just a long delay (+ we have other
> similar quirks for Fujitsu drives).

Hmm- rather than disable SYNC cache, maybe we ought to run up the timeout on
this command- it's only 5 minutes, which I could see as being slightly
marginal for an MO.



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