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DateTue, 30 Mar 2004 17:39:26 -0500
FromJeff Garzik <>
SubjectRe: [PATCH] barrier patch set
Chris Wedgwood wrote:
>>For IDE, O_DIRECT and O_SYNC can use special "FUA" commands, which
>>don't return until the data is on the platter.
> 
> 
> On modern drives how reliable is this?  At one point disk-scrubbing
> software which used FUA (to ensure data was being written to the
> platters) showed that some drives completely ignore this.

I'm suspicious of this, because of Bart's point...   I haven't seen any 
PATA disks that did FUA, so it sounds like broken software.

	Jeff



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