This is how it actually works already.  It's a side effect of ZFS being 
transactional.

Jeff

On Apr 2, 2010, at Friday, April 2 2:32 AM, [email protected] wrote:

> 
>> Yes.  It should be inherited.
>> 
>> For the property values, I'd prefer:
>> 
>> "standard" -  we honor the standard (posix) semantics, without saying  
>> posix.
>> 
>> "always" - make every system call synchronous.
>> 
>> "barrier" - treat fsync() only as a write barrier, which ensures that  
>> all previous
>> writes/updates will be on stable storage before any subsequent updates.
> 
> 
> +1.   I like barrier as it clearly explains what happens.  Is this 
> actually what happens now when you disable the ZIL or is this a new 
> feature?
> 
> Casper
> 

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