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wd3200js
2006 Dec 09
2
fsync, ext3, raid (md) 1, write barriers and PATA caching
I have been trying to figure out whether I can enable write caching on my
PATA hard drives (WD3200JB) and have fsync not return until data is
safely on the platters. I am also running software raid.
This is currently on FC5 (though soon to be FC6) with a 2.6.18 kernel.
>From snippets I have found on the net, it looks like write barriers are
pushed down through software raid when using raid 1....