Re: RAID 5 performance problems

Andy Arvai (arvai@scripps.edu)
Thu, 3 Apr 2003 11:49:42 -0800 (PST)

Shouldn't /proc/mdstat have [UUUUU] instead of [_UUUU]? Perhaps
this is running in degraded mode. Also, you have 'algorithm 0',
whereas my raid5 has 'algorithm 2', which is the left-symmetric
parity algorithm.

Andy

> cat /proc/mdstat gives:
>
> Personalities : [raid0] [raid5]
> read_ahead 1024 sectors
> md0 : active raid5 hdk1[4] hdi1[3] hdg1[2] hde1[1] hdc1[0]
> 468872704 blocks level 5, 128k chunk, algorithm 0 [5/5] [_UUUU]
> unused devices: <none>

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