[Please CC me on replies]
too small chunk_size: 4096 < 8192
Maybe use a bigger chunk size, 4K is rather small. However I thought 4k would work. Maybe you aren't using an i386, as the minimum chunksize is currently connected with the system pagesize. What architecture are you using?
Oops, I forgot to specify. I'm using an UltraSPARC on a Sun Enterprise 450, using kernel 2.4.19 (I haven't had a chance to try .21 yet). I was just following the Software-RAID HOWTO, which said that for striping, chunksize didn't really matter.
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