Re: [BUG] raid1 behind writes alter bio structure illegally

[Paul Clements]

Milan Broz wrote:
> Hi Paul,
>
> Paul Clements wrote:
> > I've run into this bug on a 2.6.18 kernel, but I think the fix is still 
> > applicable to the latest kernels (even though the symptoms would be 
> > slightly different).
> >
> > Perhaps someone who knows the block and/or SCSI layers well can comment 
> > on the legality of attaching new pages to a bio without fixing up the 
> > internal bio counters (details below)?
>
> > LVM over raid1 over SCSI/nbd
>
> Please can you try that backporting of this patch helps?
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5d84070ee0a433620c57e85dac7f82faaec5fbb3
>
> (If so, see https://bugzilla.redhat.com/show_bug.cgi?id=512387)

Thanks Milan. I tested the patch and it does fix the issue. I replied to 
the bugzilla report with this information.

--
Paul
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