Date: Sat, 15 Aug 2009 14:18:38 +0200 From: Joerg.Schilling@fokus.fraunhofer.de (Joerg Schilling) To: freebsd-current@freebsd.org, nox@jelal.kn-bremen.de Subject: Re: ahci(4) hang reproduced, this time it was cdrdao scanbus Message-ID: <4a86a79e.fsqybTv/DWO05%2B80%Joerg.Schilling@fokus.fraunhofer.de>
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>wanted to burn an audio cd today and ran `cdrdao scanbus' to find out >cdrdao's --device arg for the optical drive (turns out its the same why do you use cdrdao for writing an audio CD? >numbering as camcontrol devlist reports i.e. > <PIONEER DVD-RW DVR-216D 1.09> at scbus3 target 0 lun 0 (cd1,pass3) >becomes --device 3,0,0) - after which ahci(4) hung again with the board's >disk access led on solid. This time tho I took a photo: > http://people.freebsd.org/~nox/ahcihang1.jpg This may be a bug in the driver, a driver is not allowed to do retries in case that a command was send via SCSI pass through. > cdrdao is in ports as sysutils/cdrdao and is mostly used for writing >or cloning audio cds or vcds. (I haven't tried cdrecord's -scanbus >command tho I wouldn't be surprised if it behaves the same... cdrecord >is in ports as sysutils/cdrtools and sysutils/cdrtools-devel; you usually >want cdrtools-devel.) Cloning CDs is not really implemented in cdrdao, if you really like to clone, use the clone feature from cdrtools: readcd -clone f=img.out cdreccord -v -raw96r -clone img.out but note that there is a quality loss with cloning, I recommend to call this: cdda2wav -vall cddb=0 -paranoia -Owav -B cdrecord -v -sao -text -useinfo *.wav for best quality of a CD-Audio copy. >Oh and btw, the actual burning (after reboot + fsck) then went just >fine, its just the scanbus command that ahci(4) apparently doesn't like... If you like to see what causes the hang, call: cdrecord -scanbus -V Jörg -- EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin js@cs.tu-berlin.de (uni) joerg.schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily
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