> Hmm, when you did the write-back test was the ZIL SSD included in the > write-back? > > What I was proposing was write-back only on the disks, and ZIL SSD > with no write-back.
The tests I did were: All disks write-through All disks write-back With/without SSD for ZIL All the permutations of the above. So, unfortunately, no, I didn't test with WriteBack enabled only for spindles, and WriteThrough on SSD. It has been suggested, and this is actually what I now believe based on my experience, that precisely the opposite would be the better configuration. If the spindles are configured WriteThrough, while the SSD is configured WriteBack. I believe would be optimal. If I get the opportunity to test further, I'm interested and I will. But who knows when/if that will happen. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
