Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: Problems with DMA on IDE/ServerWorks/Seagate. | Date | Thu, 15 Jul 2004 12:24:45 +0200 |
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On Thursday 15 of July 2004 02:16, Dave Woods wrote: > Please CC me on all replies, as I am not subscribed to the list. > > We have diagnosed a problem (file corruption) using Ultra DMA & IDE with > > ServerWorks OSB4 Chipset and Seagate drives under heavy disk I/O. > We were able to find a thread that discusses this problem in detail, > but dates back to 2001. We have nearly 100 boxes using this > configuration > with kernal 2.4.20, and we can reproduce the problem easily with a perl > script using md5 checksums. > > The applicable thread is given below: > http://www.uwsg.iu.edu/hypermail/linux/kernel/0109.3/1006.html > > We've disabled DMA on several machines, and that appears to fix > the problem. However, despite seeing this workaround mentioned > several times, we have not had any luck downshifting to mdma2. > Every time I attempt it, all disk accesses freeze up, and the box > has to be rebooted. > > Our question: short of disabling DMA on all of our machines, what > other alternatives are there? I've played with using the hdparm -p > parameter prior to issuing hdparm -X34 and hdparm -d1, but it > doesn't like it. Is there a simple fix to this problem out there?
Upgrade to 2.4.26 and see if it fixes your problem.
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