From owner-freebsd-fs@FreeBSD.ORG  Mon Jan 30 04:30:16 2012
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Date: Sun, 29 Jan 2012 22:30:06 -0600
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From: Mark Felder <feld@feld.me>
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Subject: ZFS sync / ZIL clarification
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I believe I was told something misleading a few weeks ago and I'd like to  
have this officially clarified.

NFS on ZFS is horrible unless you have sync = disabled. I was told this  
was effectively disabling the ZIL, which is of course naughty. Now I  
stumbled upon this tonight:


> Just for the archives... sync=disabled won't disable disable the zil, 
> it'll disable waiting for a disk-flush on fsync etc. With a battery 
> backed controller cache, those flushes should go to cache, and bepretty  
> mich free. You end up tossing away something for nothing.

Is this accurate?