Date: Sun, 20 Sep 2009 12:58:29 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Zaphod Beeblebrox <zbeeble@gmail.com> Cc: stable@freebsd.org Subject: Re: What happened to DVD writing? Message-ID: <alpine.BSF.2.00.0909201250190.99625@wonkity.com> In-Reply-To: <5f67a8c40909201103g2dba2d26m414b6bec4142b724@mail.gmail.com> References: <alpine.BSF.2.00.0909200636310.98493@wonkity.com> <5f67a8c40909201103g2dba2d26m414b6bec4142b724@mail.gmail.com>
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On Sun, 20 Sep 2009, Zaphod Beeblebrox wrote: >> >> FreeBSD lightning 7.2-STABLE FreeBSD 7.2-STABLE #0: Sun Sep 20 07:25:58 MDT >> 2009 root@lightning:/usr/obj/usr/src/sys/LIGHTNING i386 >> >> Now growisofs starts, but appears to never manage to write to the DVD. It's >> a DVD-R, one from the same batch that has worked before: >> >> 0.77% done, estimate finish Sun Sep 20 07:55:57 2009 >> >> and there it stops. Rebooting is needed, and the machine can't quite bring >> itself to shut down after syncing buffers. /var/log/messages: >> >> Sep 20 07:42:44 lightning kernel: acd0: FAILURE - READ_BUFFER ILLEGAL >> REQUEST as c=0x24 ascq=0x00 >> Sep 20 07:42:46 lightning kernel: acd0: FAILURE - MODE_SELECT_BIG ILLEGAL >> REQUEST asc=0x24 ascq=0x00 >> Sep 20 07:42:56 lightning kernel: acd0: FAILURE - READ_TOC ILLEGAL REQUEST >> asc=0x24 ascq=0x00 >> Sep 20 07:43:25 lightning kernel: acd0: WARNING - TEST_UNIT_READY taskqueue >> time out - completing request directly >> Sep 20 07:43:36 lightning kernel: acd0: WARNING - TEST_UNIT_READY freeing >> taskqueue zombie request >> Sep 20 07:45:26 lightning kernel: acd0: WARNING - PREVENT_ALLOW taskqueue >> timeout - completing request directly >> Sep 20 07:45:26 lightning kernel: acd0: WARNING - PREVENT_ALLOW freeing >> taskqueue zombie request >> > I recently upgraded from 7.0 to 7.2-p3. I just last night cut a dual layer > DVD with growisofs. It appears to have cut fine. > > When growisofs stops in the middle like that, it's often caused by media > defects. Have you tried another disk? Yes, same effect. Also with a DVD+R. Also tried it on 8-STABLE, same messages, same results. > Another possibility is that the drive is worn out. DVD writers have a > limited lifespan largely measured by the number of disks they cut. This drive has probably written under 50 DVDs, all ISOs used for backup. It's a Lite-On DH-20A4P bought in August 2008. It's looking like the drive itself has failed. Which seems odd, since I thought it could still burn CDs. -Warren Block * Rapid City, South Dakota USA
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