I've been reading this list for a while, there's lots of discussion
about b134 and deduplication. I see some stuff about snapshots not being
destroyed, and maybe some recovery issues. What I'd like to know is, is
ZFS with deduplication stable enough to use?
I have two NFS servers, each running OpenSolaris 2009.06 (111b), as
datastores for VMWare ESX hosts. It works great right now, with ZIL
offload and L2ARC SSDs. I still get occasional complaints from
developers saying the storage is slow - which I'm guessing is that read
latency is not stellar on a shared storage. Write latency is probably
not an issue due to the ZIL offload. I'm guessing deduplication would
solve a lot of this read latency problem, having to do fewer read IOs.
But is it stable? Can I do nightly recursive snapshots and periodically
destroy old snapshots without worrying about a dozen VMs suddenly losing
their datastore? I'd love to hear from your experience.
Thanks,
-Paul Choi
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