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SubjectRe: bio too big device
On Tuesday March 11, wrote:
> I frequently receive this message in my syslog, apparently
> whenever there are periods of significant write activity:
> bio too big device ide0(3,7) (256 > 255)
> bio too big device ide1(22,6) (256 > 255)
> It's worth noting that on this system I have had ongoing trouble
> with system stability during write activity as well, using a
> wide variety of 2.5.x kernels, even though at the time of this
> symptom things are apparently running fine.
> Filesystems are all ext3 on top soft raid0 devices. This happens
> to be 2.5.64, but it has been happening for at least the last
> 5-6 versions.
> Ideas? Any further debugging output I can provide?

raid0 doesn't really work well in 2.5 yet.... as you have noticed.

We really need to grab the bio splitting code out of md/dm.c and use
it to split bios that are too big or that cross device boundaries.

any volunteers??

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