Date: Fri, 1 Nov 2002 16:38:06 -0800 From: ANYBODY <somebody@kashmir.etowns.net> To: Nate Lawson <nate@root.org>, gibbs@scsiguy.com Cc: ANYBODY <somebody@kashmir.etowns.net>, scsi@freebsd.org Subject: Re: adaptec ahc : seagate da : current Message-ID: <20021102003806.GA1664@hurd1.kashmir.etowns.net> In-Reply-To: <Pine.BSF.4.21.0211011208320.97230-100000@root.org> References: <20021101011945.GA56589@hurd1.kashmir.etowns.net> <Pine.BSF.4.21.0211011208320.97230-100000@root.org>
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On Fri, Nov 01, 2002 at 12:11:08PM -0800, Nate Lawson wrote: > On Thu, 31 Oct 2002, ANYBODY wrote: > > > this drive? According to the controller, the drive is failing > > > to respond to a whole slew of commands that we have queued to > > > it. You might have better luck if you reduce the tag depth > > > to the disk via camcontrol. > > > > > Have you done what he said? man 8 camcontrol (see the "tags" subcommand). > > -Nate > Sorry dont know how but missed it. thank you for reminding. here is what I got: # camcontrol tags da0 -v (pass0:ahc0:0:3:0): dev_openings 63 (pass0:ahc0:0:3:0): dev_active 0 (pass0:ahc0:0:3:0): devq_openings 63 (pass0:ahc0:0:3:0): devq_queued 0 (pass0:ahc0:0:3:0): held 0 (pass0:ahc0:0:3:0): mintags 2 (pass0:ahc0:0:3:0): maxtags 255 ---- looks like i can set the dev_openings & devq_openings to anywhere between 2 and 255, with it being 63 now. I have no idea as to what, if at all would be a better number. any suggestions? Question does the kernel change these values dynamically perhaps as a result of the errors like the ones I am getting? If not howcome the problem occurs only if there is a little over moderate disk activity within probably a short while after bootup, and inspite of howmuch activity occurs later this problem most rarely occurs again. thanks and appreciate your help Saurabh Gupta To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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