Hi all
This is a followup to my previous message regarding a consistant
reproducable oops under 2.4.20 when burning CDs using cdrecord and ide-scsi.
Last night I tried disabling DMA on the CD drive (it was enabled by
default):
hdparm -d0 -c1 /dev/hdc
Following this, two dummy writes (700MB and 680MB respectively) proceeded
normally and completed without errors. Given that under 2.4.20 the dummy
writes usually failed very quickly (after around 7-30MB), it would appear
that in the first instance at least, DMA must be disabled for ide-scsi CD
writers under 2.4.20 in order for burning to be reliable.
Obviously this isn't the intended behaviour though; is anyone aware of this
issue and/or is it being worked on for 2.4/2.5 as appropriate?
Best regards
jonathan
-- * Jonathan Woithe jwoithe@physics.adelaide.edu.au * * http://www.physics.adelaide.edu.au/~jwoithe * ***-----------------------------------------------------------------------*** ** "Time is an illusion; lunchtime doubly so" ** * "...you wouldn't recognize a subtle plan if it painted itself purple and * * danced naked on a harpsichord singing 'subtle plans are here again'" * - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Mar 15 2003 - 22:00:24 EST