Are you sure about that chunk size? In you initial posting you show /proc/mdstat reporting:
"md2 : active raid5 sdc3[2] sda3[0] sdb3[1] 780083968 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU]" Which would seem to state a 128K chunk, and thus with a 4k block size you would need a stride of 32. On 7/18/07, Rui Santos <[EMAIL PROTECTED]> wrote:
koan wrote: > How did you create the ext3 filesystem? The chunk_size is at 256KB, ext3 block size is 4k. I believe the correct option that should be passed trough to --stride is 64. Am I correct ? I've also tested ( after sending my first report ) with xfs. I've also increases readahead to 65535 on all HD's I've also increases the stripe_cache_size to 16384. I can now get ~100MB/sec... > > Did you use the appropriate --stride option as noted here: > http://tldp.org/HOWTO/Software-RAID-HOWTO-5.html (#5.11) > - > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > > >
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