Date: Mon, 13 Dec 1999 09:17:35 +0100 (CET) From: Soren Schmidt <sos@freebsd.dk> To: msmith@FreeBSD.ORG (Mike Smith) Cc: haro@tk.kubota.co.jp (Munehiro Matsuda), freebsd-current@FreeBSD.ORG Subject: Re: ATA weird message? Message-ID: <199912130817.JAA37135@freebsd.dk> In-Reply-To: <199912130739.XAA05787@mass.cdrom.com> from Mike Smith at "Dec 12, 1999 11:39:59 pm"
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It seems Mike Smith wrote: > > It seems Munehiro Matsuda wrote: > > > Hi all, > > > > > > I am using -current as of December 9 (CTM:src-cur.4130.gz), and > > > got following weird ATA related messages while 'make -j4 buildworld'. > > > I never had this kind of message when using wd drivers. > > > > > > ata0-master: ad_timeout: lost disk contact - resetting > > > ata0: resetting devices .. done > > > > Hmm, maybe the timeout in ata-disk.c is too short, try increasing > > the 5*hz to say 10*hz in line 436, and see if that changes anything.. > > Ugh. Are we still using these short timeouts for I/O transaction > completion? Much pain some time back established that we need at least > 30 seconds for some drives doing internal error recovery, and as long as > the drive is returning something sensible (ie. still busy), we should > give it at least that long. Not really, the timeout for completing a request on a drive that said it is ready, _should_ complete in much less than 5 secs, but a reset of a hung drive should be waited for 31 secs, which we do allready in ata_reset()... I'm afraid that the sporious timeouts that some are seeing is an artifact of another problem... -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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