Date: Tue, 21 Oct 2008 09:04:09 -0400 From: "Ben Kaduk" <minimarmot@gmail.com> To: "Thomas Quinot" <thomas@freebsd.org> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: delayed panic loading atapicam (after failed burncd) Message-ID: <47d0403c0810210604me000a11h1d2dc3cfc1da1f3b@mail.gmail.com> In-Reply-To: <20081021071716.GA50364@melamine.cuivre.fr.eu.org> References: <47d0403c0810111730p41bb17feva35729f31d0d2f44@mail.gmail.com> <20081020165449.GB10340@melamine.cuivre.fr.eu.org> <47d0403c0810202228s18b21c35ybd073ccfb6548a87@mail.gmail.com> <20081021071716.GA50364@melamine.cuivre.fr.eu.org>
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On Tue, Oct 21, 2008 at 3:17 AM, Thomas Quinot <thomas@freebsd.org> wrote: > * Ben Kaduk, 2008-10-21 : > >> # kldload atapicam >> acd0: FAILURE - INQUIRY ILLEGAL REQUEST asc=0x24 ascq=0x00 >> cd0 at ata1 bus 0 target 0 lun 0 >> cd0: <HL-DT-ST RW/DVD MU10N 1.05> Removable CD-ROM SCSI-0 device >> cd0: 3.3000MB/s transfers >> cd0: Attempt to query device size failed: NOT READY, Medium not present > > Looks good. After that point device cd0 does exist, right? yes, /dev/cd0 exists here > >> warm boot (no acd0 found): >> # kldload atapicam >> [nothing] > > If there's no acd0 that indicates that the ATA layer does not see the > drive so it's not completely unepected that ATAPI/CAM, which sits on top > of ATA, doesn't see it either. Quite so. > >> cold boot: >> >> # kldload atapicam >> acd0: FAILURE - INQUIRY ILLEGAL REQUEST asc=0x24 ascq=0x00 >> cd0: at ata1 bus 0 target 0 lun 0 >> cd0: <HL-DT-ST RW/DVD MU10N 1.05> Removable CD-ROM SCSI-0 device >> cd0: 3.300MB/s transfers >> cd0: cd present [3778x2048 byte records] >> acd0: FAILURE - READ_BIG ILLIGAL REQUEST asc=0x64 ascq=0x00 >> (cd0:ata1:0:0:0): READ(10). CDB: 28 0 0 0 e c1 0 0 1 0 >> (cd0:ata1:0:0:0): CAM Status: SCSI Status Error >> (cd0:ata1:0:0:0): SCSI Status: Check Condition >> (cd0:ata1:0:0:0): ILLEGAL REQUEST asc:64,0 >> (cd0:ata1:0:0:0): Illegal mode for this track >> (cd0:ata1:0:0:0): Unretryable error >> (cd0:ata1:0:0:0): cddone got error 0x6 back >> [no panic] > > Does cd0 exist at this point? Yes. > >> warm boot: >> # kldload atapicam >> [nothing happens] > > Same as above. > > For the case of the unit disappearing at warm reboot, it would be > interesting to have a complete transcript of a verbose boot (boot -v). I took this a few weeks ago, basically when I first got the machine, but it appears to display the behavior in question: http://stuff.mit.edu/afs/sipb.mit.edu/user/kaduk/freebsd/prolix/dmesg.verbose -Ben Kaduk > To avoid copying everything by hand, you can hook a serial console to > your machine and log the messages on a second machine. > >> I don't have the media that was causing the panic here at home; I'll >> try to test that tomorrow and see if the panic >> is gone with the new snapshot. > > OK, thanks, let me know. > > Thomas. > >
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