Messages in this thread | | | From | Jose Orlando Pereira <> | Subject | IDE corruption with ServerWorks OSB4 and 2.4.18 + Fix | Date | Tue, 9 Jul 2002 11:54:39 +0100 |
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Hi,
This is an experience report. I hope it is useful. I don't know if this is known fact, but I've not been able to find it by searching the archives. I've found only a reference to using MWDMA2 and loosing some performance.
I've been using 2.4.6 (plain) on a couple of OSB4-based machines which boot with UDMA2 enabled with no problem whatsoever. Recently, I've upgraded one of them to 2.4.18-3smp (RedHat), which doesn't use DMA by default. Using hdparm -d1 to activate DMA results either in an error message about OSB4 and freeze or in a very severe corruption of the root partition (reinstallation required).
After some experimentation, and by comparing /proc/ide/hda/settings with the machine still running 2.4.6, I've tryied setting hdparm -X66 before using -d1 and it now works *reliably* and fast (21Mb/s).
If anybody wants further information about the hardware or wants to experiment better fixes, please ask. I don't mind reinstalling the thing a few more times. :-)
-- Jose Orlando Pereira * mailto:jop@di.uminho.pt * http://gsd.di.uminho.pt/~jop * - 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/
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