Date: Thu, 11 Jan 2007 08:27:34 -0800 From: Scott Long <scottl@samsco.org> To: Cstdenis <cstdenis@ctgameinfo.com> Cc: freebsd-scsi@freebsd.org Subject: Re: Bug in aac? Message-ID: <45A66576.9010106@samsco.org> In-Reply-To: <45A4E3AD.1040600@ctgameinfo.com> References: <45A4E3AD.1040600@ctgameinfo.com>
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Cstdenis wrote: > I am running 6.1-p11 with a Adaptec SAS RAID 4800SAS running a mirror of > 2 15k rpm SCSI drives. > > Under heavy IO load (Its a database server) I get the following > accompanied by serious system lag: > The system recovers after this? Strange. What the messages mean is that I/O has been sent to the controller, and the controller has not responded in a reasonable period of time. Usually this is a sign of the controller has died and will not recover. So if it is recovering then either there is a firmware bug that is making the controller pause for a long period of time, or there is some sort of yet-undiscovered driver bug. Of course you should make sure that you're running the latest firmware from Adaptec. These cards are new and SAS in general is relatively new, so bugs are not unlikely. One question, though, how are you running SCSI drives on a SAS controller? Are you going through some sort of converter? Scott
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