On 6/19/2013 3:03 AM, David Howells wrote:
Rob Bos <rbos@xxxxxx> wrote:I applied the 373 patchset and compiled a version with CIFS_FSCACHE enabled. Same problem. Got ~2GiB into a cp before it started generating 'bad page state' errors.Okay, thanks. Looks like there's still another bug in there:-( When you say you git 2GiB into a cp, were you actually copying a file of that size? Or was this cumulative?
Bunch of small files. Matlab installer, specifically.I was working on duplicating the error messages this morning by copying files of known size in a controlled fashion, and crashed the VM (another process was reading data from it at the time). Had the VMware guy capture a screenshot of the oops, attached, but alas, no scrollback.
When I get some time I'll write up a quick script to repeatedly write/read files of a fixed size and stop when an error is found in dmesg, under more controlled circumstances. That might tell us if it's a certain file access doing it, or a certain amount of writes, or reads.
If I could work out how to reproduce this reliably, there's a good chance I'll be able to fix it. David
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