Messages in this thread |  | | Date | Wed, 6 Dec 2000 11:41:51 -0800 (PST) | From | Andre Hedrick <> | Subject | Re: Trashing ext2 with hdparm |
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No way that this could cause corruption it is a read-only test.
On Wed, 6 Dec 2000, Udo A. Steinberg wrote:
> > Hi, > > Following the discussion in another thread where someone > reported fs corruption when enabling DMA with hdparm, I've > played around with hdparm and found that even the rather > harmless hdparm operations are capable of trashing an ext2 > filesystem quite nicely. > > hdparm version is 3.9 > > hdparm -tT /dev/hdb1 does the trick here. > > After that, several files are corrupted, such as /etc/mtab. > Reboot+fsck fixes the problem, however e2fsck never finds > any errors in the fs on disk. > > I'm quite sure that earlier kernel versions didn't exhibit > this kind of behaviour, although I'm not quite sure at > which point things started to break. I have test12-pre6 > here atm, but I have test-11 still lying around and will > test that in a bit. > > The drive in question is an IBM-DTLA307030 running in > UDMA Mode 5 on a PDC20265, chipset revision 2. > > I haven't seen any other corruption other than that which > hdparm reliably triggers. Might as well be a bug in hdparm, > so someone else might also want to check... > > -Udo. > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > Please read the FAQ at http://www.tux.org/lkml/ >
Andre Hedrick CTO Timpanogas Research Group EVP Linux Development, TRG Linux ATA Development
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