[OmniOS-discuss] OmniOS backup box hanging regularly

[Lauri Tirkkonen]

On Thu, Oct 22 2015 20:51:32 +0200, Jim Klimov wrote:
> Did anyone run into issues with many zfs-auto-snapshots (e.g.
> thousands - many datasets and many snaps until they are killed to keep
> some 200gb free) on a small nujber of spindles?

Not with that number of snapshots, but we had several thousand
filesystems with dozens (I think about 70) of snapshots per fs, and it
turned out to be a really bad idea due to the memory requirements:
things slowed down *a lot*. We didn't see any hangs though.

I have a pool with around four thousand snapshots total at home and that
box is performing just fine, and it's just two spinning disks + two SSDs
for cache/slog.

-- 
Lauri Tirkkonen | lotheac @ IRCnet