If you set the stripe_cache_size less than or equal to the chunk size of
the SW RAID5 array, the processes will hang in D-state indefinitely until
you change the stripe_cache_size to > chunk_size.
Tested with 2.6.22-rc6 and a 128 KiB RAID5 Chunk Size, when I set it to
256 KiB, no problems. 128 KiB and below cause issues.
Justin.
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