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On Dec 17, 2004, at 1:08 AM, Manuel Bouyer wrote:

> Also note that you may not want to flush the cache in all cases. For 
> example,
> with SCSI tagged queuing, a write barrier would be enouth to meet this
> constraint.

Not true.  When a SCSI tagged write is "complete", it may only be in 
the drive's cache.  If you really really really want it to be on the 
platter, you need to issue SYNCHRONIZE CACHE or use FUA on the 
individual commands.

         -- Jason R. Thorpe <thorpej@shagadelic.org>


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