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SubjectRe: [Linux-cachefs] CacheFiles: Readpage failed on backing file
On Mon, 22 Jun 2009, Christian Kujau wrote:
> On Mon, 22 Jun 2009, David Howells wrote:
> >> [ 399.332346] [<ffffffff810da03a>] ? ext3_truncate+0x26a/0x9e0
> >
> > Can you try the attached patch, please?
> The patch helps, I think. Without this patch I was able to reproduce
> this very quickly, just running "grep -lr foo /share/nfs" was enough to
> trigger the backtrace. With this patch, grep is still running (and
> utilizing cachefiles) but no warnings so far.

Unfortunately, now the system just freezes when doing *a lot* of read
operations on the NFS share (grep -r foo again). I don't know if it's
related to your patch or something else, debugging is kinda hard at the
moment, as it's a Xen DomU (no netconsole; serial redirection magic still
not working), it'll take me a while to figure out what's going on here.

FWIW, I'm able to compile kernels over this very same (readonly) NFS
share, only "grep -r" was able to trigger the freeze.

BOFH excuse #323:

Your processor has processed too many instructions. Turn it off immediately, do not type any commands!!

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