Re: RAID 5 performance problems

Mike Dresser (mdresser_l@windsormachine.com)
Thu, 3 Apr 2003 15:25:43 -0500 (EST)


On Thu, 3 Apr 2003, Andy Arvai wrote:

> 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.

he's running it in degraded mode intentionally, the setup is so broken
that the performance loss is masked by the rest of the system.

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