Messages in this thread | | | Date | Tue, 31 Aug 2004 17:56:53 +0200 | From | Erik Mouw <> | Subject | Re: Driver retries disk errors. |
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On Tue, Aug 31, 2004 at 03:12:52PM +0100, Alan Cox wrote: > On Maw, 2004-08-31 at 14:54, Rogier Wolff wrote: > > How about we set the num-retries to 1, and increase to 8 for > > "weird devices" (floppy, MO), and older drives. > > Disagree. I want it robust. If you want to set low retry counts then > the user should do so for special cases like forensics.
The SCSI disk driver has been doing a single retry for quite some time and it hasn't really bitten people. Why would the IDE disk driver be different? The only case I can imagine a retry would be OK, is when we get an UDMA CRC error (caused by bad cables).
(OK, for SCSI drives you have a lot more control about how a drive should treat errors, but the kernel will not retry a block when the drive reported it's bad.)
Erik
-- +-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 -- | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands - 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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