Date: Mon, 22 Jun 1998 19:24:18 -0400 (EDT) From: Simon Shapiro <shimon@simon-shapiro.org> To: Tom <tom@sdf.com> Cc: freebsd-SCSI@FreeBSD.ORG, Chris Parry <laotzu@juniper.net>, alex@nac.net Subject: RE: DPT support binaries - How to Setup Message-ID: <XFMail.980622192418.shimon@simon-shapiro.org> In-Reply-To: <Pine.BSF.3.95q.980622124956.2431A-100000@misery.sdf.com>
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On 22-Jun-98 Tom wrote: > > On Sun, 21 Jun 1998 alex@nac.net wrote: > >> Search the archives; there are about 10 instances of this in the past 2 >> months. > > I've been on freebsd-scsi list a long time. The only instance was your > system as I recall. > >> It is when the array is in degraded mode, and you try to boot. > > No. Done that here several times. > > However, you can't boot if the array is dead (RAID5 with two failed > drives) but that goes without saying. I've seen an interesting scenario > where a rebuild caused a marginal drive to fail, so you always want to > try > at least two simulated failures before bringing a new server online. About 2 out of 5 builds failed with firmware 7M0. The same hardware later revealed a bad disk shelf (one of the busses alarms continually). We moved the disks to another bay (SE rather than Differential) and controller, and the failure re-occured. This time changing a damaged cable cured it. I think you are right about the build process exposing weaknesses in the drives. I also think there is some sensitivity in the firmware. I have traced and verified the driver and am of the opinion that it is not FreeBSD (or driver) related. To change my mind, provide me with a core dump, and/or a trace that shows the nature of the crash. Otherwise, I'll quote my bootcamp seargant; ``talk is cheap''. ---------- Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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