Hi, I think I've found why an April 2012 kernel shows faster response on iscsi than a Dec 2014 one. Looks like the iscsi sync=standard works almost like disabled on the old one, while almost like enabled on the new one. Obviously, justs by adding the zil to the new one will let the iscsi work as expected. I was just trying to guess why the two systems were acting different on the same config without zil. So, my question is: - is the sync=standard of iscsi vols changed since Apr 2012, so now it syncs much more than before? - can I be safe on installed machines with old kernel, where iscsi-vols have sync=default, syncing less, but having a zil? Thanks for any clarification, Gabriele.
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