> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Alxen4
> 
> Disabling ZIL converts all synchronous calls to asynchronous which
> makes ZSF to report data acknowledgment before it actually was written
> to stable storage which in turn improves performance but might cause
> data corruption in case of server crash.
> 
> Is it correct ?

It is partially correct.

With the ZIL disabled, you could lose up to 30 sec of writes, but it won't
cause an inconsistent filesystem, or "corrupt" data.  If you make a
distinction between "corrupt" and "lost" data, then this is valuable for you
to know:

Disabling the ZIL can result in up to 30sec of lost data, but not corrupt
data.

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