Date: Sun, 17 Aug 1997 23:08:18 -0700 (PDT) From: Ian Kallen <ian@gamespot.com> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: dead disk Message-ID: <Pine.BSF.3.95q.970817230146.6917D-100000@ns2.gamespot.com> In-Reply-To: <19970818073229.DO12056@uriah.heep.sax.de>
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On Mon, 18 Aug 1997, J Wunsch wrote: Thanks Joerg! > As Ian Kallen wrote: > > Aug 18 04:34:59 scorn /kernel: sd3(ahc0:3:0): MEDIUM ERROR info:0x50033 > > csi:1,79,7,3b asc:16,0 Data synchronization mark error > > field replaceable unit: 15 > > Did you turn on automatic error recovery? It's on mode page 1 (see > scsi(8)). > Um, can you provide me with an example of how to use it for automatic error recovery? Like this? scsi -f /dev/rsd3c -m 1 I looked at scsi(8) and /usr/share/misc/scsi_modes for the mode pages... I don't know enough about low level scsi to find anything illuminating there. > If you turn it on right now, you can't fix the old errors unless you > overwrite the bad block (0x50033, block number from the beginning of > the device). > > If this doesn't help either, you can still try backing it up. I think > dump(8) is fairly forgiving if a medium has a few bad spots only. > Also, problems of this kind are often temperature-related, so cooling > the drive down could get you at least the desired backup. > Dumping a raw device? Hmm, never tried it. I've got the disk cooled, it's in it's own enclosure now. thanks! -Ian > -- > cheers, J"org > > joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE > Never trust an operating system you don't have sources for. ;-) > -- Ian Kallen ian@gamespot.com Director of Technology and Web Administration SpotMedia Communications http://www.gamespot.com/ http://www.videogamespot.com/
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