Re: Errors and later panics in 2.6.0-test11.

[Kevin P. Fleming]

Nathan Scott wrote:

> > The problem I reported was also with RAID-5, and I have also found a 
> > problem similar to Nathan's (probably the same one) by just trying to 
> > run bonnie++ on an XFS filesystem on DM over RAID-5, even after 
> > formatting the XFS filesystem to forcibly align everything to RAID-5 
> > stripes (64K units).
>
>
> FWIW, this doesn't align _everything_ (space allocations done
> through the XFS allocator are influenced, which means "most")
> -- log IO is still going to be sector aligned, as are any IOs
> to the four XFS allocation group header metadata structures.

OK, I thought that "-l sunit=..." being set to a block-size multiple 
would take care of that as well, but apparently not.

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