In message <4B34C619.7070505_at_FreeBSD.org>, Alexander Motin writes: >Poul-Henning Kamp wrote: >- Second is a row size - stripe size * number of data disks. You may >freely read less information then full row, but short write cause RAID >to handle read-modify-write scenario. There is a far worse scenario: a stripe-spanning write, it forces a RMW cycle over two different RAID5 stripes. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk_at_FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.Received on Fri Dec 25 2009 - 17:18:25 UTC
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