Re: btrfs GPF in read_extent_buffer() while scrubbing with kernel 3.4.2

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On Fri, Jul 06, 2012 at 10:59:24PM +0300, Sami Liedes wrote:
> I think I might try running it overnight with KMEMCHECK to see if it
> reports something. But for now, what there's in the log:

My KMEMCHECK kernel didn't even boot (due to some weird KMEMCHECK/ACPI
interaction), so I won't pursue this idea further at the moment...

> * lots of checksum mismatch [234], no 1s

One thing to notice from the logs, too, is that the device seems to
always be dm-6, the second device of the filesystem. This never seems
to happen to dm-5. There are 1583 lines of "btrfs: dm-6 checksum
verify failed".

	Sami

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