Date: Thu, 28 May 1998 23:54:49 -0400 From: tcobb <tcobb@staff.circle.net> To: "'Mike Smith'" <mike@smith.net.au> Cc: "'freebsd-current@freebsd.org'" <freebsd-current@FreeBSD.ORG>, "'freebsd-scsi@freebsd.org'" <freebsd-scsi@FreeBSD.ORG> Subject: RE: DPT driver fails and panics with Degraded Array Message-ID: <509A2986E5C5D111B7DD0060082F32A402FAC3@freya.circle.net>
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> -----Original Message----- > From: Mike Smith [mailto:mike@smith.net.au] > Sent: Thursday, May 28, 1998 10:04 PM > To: tcobb > Cc: 'freebsd-current@freebsd.org'; 'freebsd-scsi@freebsd.org'; > 'simon@simon-shapiro.org' > Subject: Re: DPT driver fails and panics with Degraded Array > > > > HISTORY > > I've used DPT in FreeBSD since last November, first with the hacked > > 2.2.2 driver. I upgraded to 2.2.6 to fix a MBUF leak that > was crashing > > me about once per week. As 2.2.6, the MBUF leak disappeared and was > > replaced with a once every 2-3 day panic which it appeared > was not going > > to get fixed by anyone (bidone: buffer not busy). So, I > bit the bullet > > and upgraded recently to 3.0, which seemed to fix both of > these prior > > panics only to reveal that the supposedly "high > availability" software > > driver for my HA hardware is miserable during the most > critical times. > > Given that biodone is only called from disk drivers, and I > guess you're > probably only using the DPT driver, it sounds like your two problems > are one. > > Certainly, given that 3.0 upgrade was taken against the > indicators, it's > hard to feel that many of your accusations are terribly justifiable. Excuse me? Could you please explain what you mean by "taken against the indicators"? It was clear from talking to more than one person on the core team that the biodone issues were unlikely to get resolved in -stable. This, plus deficiencies in the -stable NFS code (and other -stable instabilities) caused me to have to upgrade this machine to -current in order to keep using FreeBSD for it. I was quite reluctant to do this, believe me. But it was the best recommendation I was given. My problem report (most of which you snipped) pointed out a deficiency in the DPT driver code which renders it useless in HA applications. I believe that this deficiency is likely to be present in ALL VERSIONS of this code, unless suddenly, people are putting the newest code in the oldest versions of the OS. "Indicators" are that I shouldn't be using FreeBSD for any High Availability or critical operations -- I AM using FreeBSD for > 15 live servers. Now, what was your point? -Troy Cobb Circle Net, Inc. http://www.circle.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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