ZFS sync / ZIL clarification
Mark Felder
feld at feld.me
Mon Jan 30 04:30:16 UTC 2012
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?
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