Date: Sat, 20 Feb 2010 02:31:13 GMT From: jmg@FreeBSD.org To: nox@jelal.kn-bremen.de, jmg@FreeBSD.org, freebsd-scsi@FreeBSD.org, jmg@FreeBSD.org Subject: Re: kern/138789: [cam] [patch] cd(4) patch for drives/discs failing the 'read toc' command Message-ID: <201002200231.o1K2VDaj094657@freefall.freebsd.org>
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Synopsis: [cam] [patch] cd(4) patch for drives/discs failing the 'read toc' command State-Changed-From-To: open->analyzed State-Changed-By: jmg State-Changed-When: Sat Feb 20 02:26:32 UTC 2010 State-Changed-Why: I will take over this PR... The problem is that the scsi-cd.c driver attempts to read the LEADOUT track of the disc, and if it can't, assumes the disc is not valid.. For some Blu-Ray drives, they, per the spec, do not allow reading of the LEADOUT track... I also have a drive that fails.. I am currently working on a patch to not read the LEADOUT track, but keep the original behavior as a sysctl incase it breaks older cd-rom drives. Responsible-Changed-From-To: freebsd-scsi->jmg Responsible-Changed-By: jmg Responsible-Changed-When: Sat Feb 20 02:26:32 UTC 2010 Responsible-Changed-Why: I will take over this PR... The problem is that the scsi-cd.c driver attempts to read the LEADOUT track of the disc, and if it can't, assumes the disc is not valid.. For some Blu-Ray drives, they, per the spec, do not allow reading of the LEADOUT track... I also have a drive that fails.. I am currently working on a patch to not read the LEADOUT track, but keep the original behavior as a sysctl incase it breaks older cd-rom drives. http://www.freebsd.org/cgi/query-pr.cgi?pr=138789
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