Date: Thu, 11 Feb 1999 16:20:28 -0800 (PST) From: Matthew Jacob <mjacob@feral.com> To: Julian Elischer <julian@whistle.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: softupdates Message-ID: <Pine.LNX.4.04.9902111616120.15211-100000@feral-gw> In-Reply-To: <Pine.BSF.3.95.990211131520.5561B-100000@current1.whistle.com>
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> > I was misremembering. Softupdates wasn't the issue here but there *had* > > been some question about whether this was a problem with softupdates *not* > > enabled- that was from way earlier- sorry for jumping into the wrong > > thread and sorry for also probably letting a less than felicitous tone > > enter this email- I think I'm just really irritated that I didn't get mail > > back from Luoqi. > > Luoqi was "out of contact" for a while.. (had a real life plus work) > but he's not responsible for softupdates anyway. I am, and I didn't see IIRC, I was specifically asked by Jordan to mail the issues to Luoqi and Kirk. > any unresolved problems from you... > There are two open issues with soft updates BTW.. > > One is that soft updates stresses the disks so hard that the WD driver > gets into an infinite loop when in "single-block mode" (I've seen this a > couple of times in tests here) (and can reproduce it, even looked at it in > ddb but not totally solved it) (work-around is set flags to ide driver to > allow multi-block or Ultra-DMA). I'm working with servers, not desktop systems. I am working with at least 4 channels if not more. The disk units I'm using are either 60GB Adaptec RAID units, or 150GB MegaDrive RAID units. That's for the large stuff. The smaller stuff is anything from 1-10 9GB Seagate drives on either Fibre Channel or parallel SCSI. Again, it's not clear that the problem I have been seeing is a softupdates problem (modulo the panic I saw this morning). > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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