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SubjectRe: scsi-cdrom lockup and ide-scsi problem (both EFS related)
On Tue, Oct 31 2000, Paul Jakma wrote:
> I have 2 problems related to reading IRIX EFS cd's.
>
> -------problem 1:
>
> mounting an EFS cd from my Yamaha CDR-4416S SCSI CDRW consistently
> causes a lockup when i try to read directory/file data from the CD. I
> observed this initially with EFS CDR's, and assumed something had
> gone wrong when burning that CD. But the exact same thing happens
> with original SGI IRIX media. I have no problems with any of my EFS
> CDs when accesed from an ATAPI CDROM.

Known problem, blocksizes != 2kb does not currently work
correctly with SCSI CD-ROM (it's even on Ted's list).

> My IDE CDROM under ide-scsi emulation does not like trying to mount
> EFS CDs, here are the logs of multiple mount attempts:

Same deal, SCSI CD-ROM driver. As you noted, pure ATAPI drive will
work just fine.

> ide-scsi emulation - if i want to mount the CD for any reason i have
> to reboot again to get the IDE CDROM back to pure ATAPI mode, then
> reboot again for ide-scsi to burn a cd... slightly frustrating. :)

rmmod ide-scsi ; insmod ide-cd
mount, etc
rmmod ide-cd ; insmod ide-scsi
burn

--
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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