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SubjectRe: Dying disk and filesystem choice.
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Jens Axboe <axboe@suse.de> writes:

> On Thu, May 24 2001, Andi Kleen wrote:
> > On Thu, May 24, 2001 at 12:58:14AM -0600, Andreas Dilger wrote:
> > > Well reiserfs is probably a very bad choice at this point. It
> > > does not have any bad blocks support (yet), so as soon as you have
> > > a bad block you are stuck.
> >
> > reiserfs doesn't, but the HD usually has transparently in its firmware.
> > So it hits a bad block; you see an IO error and the next time you hit
> > the block the firmware has mapped in a fresh one from its internal
> > reserves.
>
> In fact you will typically only see an I/O error if the drive _can't_
> remap the sector anymore, because it has run out. No point in reporting
> a condition that was recovered.
>
> I'd still say, that if you get bad block errors reported from your disk
> it's long overdue for replacement.
>
> --
> Jens Axboe

Well, I have been fighting this for a while now, its just that today it
finally hit /home in a big way :( basically its giving a DoS trying
to compile stuff (which needs to write 25Mb+ library files)

The drive gives the patented IBM "replace me" audio and the kernel graces
me with these little chums:

May 24 14:50:22 kloof kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
May 24 14:50:22 kloof kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=78294495, sector=957496
May 24 14:50:22 kloof kernel: end_request: I/O error, dev 03:08 (hda), sector 957496
May 24 14:50:22 kloof kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
May 24 14:50:23 kloof kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=78294495, sector=957504
May 24 14:50:23 kloof kernel: end_request: I/O error, dev 03:08 (hda), sector 957504
May 24 14:50:23 kloof kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
May 24 14:50:23 kloof kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=78294495, sector=957512
I already knew that the drive was rooted by using the IBM DFT tool.
I am backing up as I type. Then, roll the dice with yet another
IBM drive :-/


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