Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt

Prakash K. Cheemplavam
2003-11-06T14:00:50Z

Nick Piggin wrote:
>
>
> Jens Axboe wrote:
>
>> On Thu, Nov 06 2003, Prakash K. Cheemplavam wrote:
>>
>>>>>> Heh indeed, maybe because the archs I use are still at 100. Looks
>>>>>> suspiciously like it's loosing timer interrupts, which would indeed
>>>>>> point to PIO.
>>>>>>
>>>>>>
>>>>> bash-2.05b# hdparm -I /dev/hdc
>>>>>
>>>>
>>>> -i please
>>>>
>>> bash-2.05b# hdparm -i /dev/hdc
>>>
>>> /dev/hdc:
>>>
>>> Model=LITE-ON LTR-16102B, FwRev=OS0K, SerialNo=
>>> Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
>>> RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
>>> BuffType=unknown, BuffSize=0kB, MaxMultSect=0
>>> (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
>>> IORDY=yes, tPIO={min:227,w/IORDY:120}, tDMA={min:120,rec:120}
>>> PIO modes: pio0 pio1 pio2 pio3 pio4
>>> DMA modes: mdma0 mdma1 *mdma2
>>> AdvancedPM=no
>>>
>>> * signifies the current active mode
>>>
>>> The same: dma is active.
>>>
>>
>> Indeed, so you are ysing multiword mode 2. Can you try and do a dd from
>> the drive, while doing a vmstat 1? Also, does that show the jerky
>> behaviour?
>>
>
> AFAIK, Prakash cannot reproduce this bad behaviour with mm1, only mm2 (is
> this right, Prakash?). So its something there (don't forget Andrew merges
> the latest bk with his releases too).

AFAIK, yes. Just too be 100% sure, I rather boot up mm1 and will do a
test-run...

Prakash