Date: Wed, 1 Mar 2000 13:47:26 -0700 From: "Kenneth D. Merry" <ken@kdm.org> To: Lauri Laupmaa <mauri@inspiral.net> Cc: scsi@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: plist/glist query & proposal Message-ID: <20000301134726.A33028@panzer.kdm.org> In-Reply-To: <38BD4CD9.22420.5550BD1@localhost>; from mauri@inspiral.net on Wed, Mar 01, 2000 at 05:01:13PM %2B0200 References: <38BD4CD9.22420.5550BD1@localhost>
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On Wed, Mar 01, 2000 at 17:01:13 +0200, Lauri Laupmaa wrote: > Hi > > How does one query glist (grown defect list) from scsi device ? Like this: # camcontrol defects da0 -f phys -G Got 8 defects: 4818:4:54 1338:0:138 1250:1:46 2661:5:117 1696:5:5 1760:5:58 688:9:133 1130:9:166 > Wouldn't it be nice if weekly/monthly scripts saved/compared glist > with previous versions, so admins can be alerted when devices > start dying. It would be nice, although I'm not sure everyone would want it. Also, one problem you may run into is that none of the defect list formats is mandatory. So there's no one format you can use that is guaranteed to work with all drives. If the drive doesn't support the requested format, it is supposed to return a specific error (which camcontrol looks for) along with the defect list in a format that it does support. Unfortunately, many drives don't do this, or return a different error, or return an error but no data. So camcontrol can't always tell the difference between "here's a defect list in some other format" and "I can't do that". One other probelm -- the read defect data command isn't mandatory in SCSI-2 at least. (haven't checked the SCSI-3 specs) So you can't even guarantee that the drive will support the command. Anyway, it should be easy enough to write a script that will compare glists for the drives on your machines and watch for failures. The defect list output is intended to be reasonably easy to script -- the number of defects goes to stderr, and the actual list of defects goes to stdout. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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