Date: Mon, 23 Feb 2004 13:13:39 +0000 From: Mark Knight <markk@knigma.org> To: freebsd-questions@freebsd.org Subject: ufs and Plextor PX-708A 1.04 Message-ID: <PF$GJ3SDyfOAFw6s@lap.knigma.org>
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I'm running 4.9-stable from November. I've recently installed a Plextor PX-708A v1.04 DVD rewriter. I'm getting good results using growisofs. On the belief that +RW support random access, for a bit of fun I created a ufs filesystem on the device with freshly formatted DVD+RW media: disklabel -r -w cd0c auto newfs /dev/cd0c mount -o noatime /dev/cd0c /mnt On the face of it, the mounted filesystem then appears to work. However, intermittently (within minutes, but after several MBs), read errors occur: >(cd0:ata1:0:0:0): READ(10). CDB: 28 0 0 1 65 a8 0 0 20 0 >(cd0:ata1:0:0:0): MEDIUM ERROR info:465b0 asc:11,5 >(cd0:ata1:0:0:0): L-EC uncorrectable error >(cd0:ata1:0:0:0): cddone: got error 0x5 back I'm probably being hopelessly ignorant. Should this work? I believe the drive supports DVD+MRW (Mt. Rainier), and that this is supposed to implement some sort of defect management. However, is OS support required as well? Any advise appreciated. -- Mark A. R. Knight finger: markk@knigma.org Tel: +44 7973 410732 http://www.knigma.org/
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