Messages in this thread | | | Date | Tue, 26 Nov 2002 16:13:29 -0800 | From | "H. Peter Anvin" <> | Subject | Re: 2.5.49: Severe PIIX4/ATA filesystem corruption |
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Alan Cox wrote: > On Tue, 2002-11-26 at 21:07, H. Peter Anvin wrote: > >>So, I finally braved it and tried running 2.5.49 on my workstation to >>test out my RAID-6 patches. There were no patches outside the md >>area, and the ordinary filesystems aren't on md drives. >> >>The two SCSI drives (SymBIOS controller) work just fine, but I have >>gotten repeated, severe data corruption on the one ATA drive in the >>system after only a few hours of operation. > > > If you mash the innards of the page cache you'll get corruption > everywhere, its one of the charms of testing out that area of the code > on Linux. You might want to debug using 2.5.49 user mode linux rather > than on raw disks. Its so much easier to use "cp" to generate a > replacement root_fs 8) >
Yes, that's true. However, the heavily used two SCSI disks saw no corruption whatsoever, whereas the single, lightly used ATA disk saw heavy corruption; if it was due to experimental unrelated code one would have expected corruption everywhere. This does not mean that it is not my fault (as far as UML is concerned, I tried building it quite a few times before giving up), but given the severity of the corruption I was seeing I thought I'd raise a red flag.
-hpa
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