On 02/01/2009 22:04, Martin K. Petersen wrote: [...]
I wrote something akin to DIF in software by doing 64 512-byte blocks + 512 bytes of checksums. The disadvantage there is having to do read-modify-write for small writes. I tried several other approaches sacrificing both space and locality but performance was still anemic.
Excuse me if I'm being dense - and indeed tell me! - but RAID 4/5/6 already suffer from having to do ready-modify-write for small writes, so is there any chance this could be done at relatively little additional expense for these?
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