what happens to pool if ZIL dies on ZFS v14

[Bryan Drewery]

>
> The ZIL is still used even without a dedicated log device. Disabling 
> it is *stupid* in most cases.
> Same goes for disabling the ARC.
>
> There is a lot of FUD out there regarding ZFS tuning. The bottom line: 
> don't tune; add more RAM.
>
http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Disabling_the_ZIL_.28Don.27t.29