[Q] zpool mirror; read from preferred vdev(s)
pressyApr 19 2013 — edited Apr 19 2013Hallo,
Using a zpool mirror; is there a way to set something like a primary storage / preferred vdevs / read-first devices like it was in disksuite using "metaparam –r [roundrobin | geometric | first]" or the "vxvol rdpol [prefer | round | select | siteread]" to define a preferred plex in VxVM? Will ZFS always use round-robin?
In our example we want to use a brand-new fast storage with hot-data tiering (ssd-caching) mirrored/combined to an older/slower one... with round-robin we could assume that every second read will be slower?
Will the write acknowledgement be commited after both writes so we will have no advantage from the faster storage?
Thanks in advance
- pressy