Messages in this thread | | | Date | Tue, 31 Aug 2004 06:45:16 -0700 (PDT) | From | Andre Hedrick <> | Subject | Re: Driver retries disk errors. |
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Rogier,
Because the command layer states to execute retries, regardless. Modern drives now convert read-once to retry. You need special opcodes to revert to desired status.
Media forensics is not a cake walk.
Andre Hedrick LAD Storage Consulting Group
On Tue, 31 Aug 2004, Alan Cox wrote:
> On Llu, 2004-08-30 at 17:39, Rogier Wolff wrote: > > We encounter "bad" drives with quite a lot more regularity than other > > people (look at the Email address). We're however, wondering why the > > IDE code still retries a bad block 8 times? By the time the drive > > reports "bad block" it has already tried it several times, including a > > bunch of "recalibrates" etc etc. For comparison, the Scsi-disk driver > > doesn't do any retrying. > > It helps for some things like magneto-opticals. For generic hard drives > its only relevant for older devices. > > > (*) Note: Tested last month: The driver still works for MFM > > drives. However, the initialization apparently is not enough > > anymore. The drive did not work when the BIOS didn't think there was a > > drive. > > Please file a bug report if 2.6 also shows that problem. > > - > 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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