Hi,
we've noticed the warnings for quite some time now, but we're big fans
of the cache tier. :-)
IIRC we set it up some time around 2015 or 2016 for our production
openstack environment and it works nicely for us. We tried it without
the cache some time after we switched to Nautilus but the performance
was really bad, so we enabled it again. Of course, one could argue
that we could just use SSD OSDs for the cached pool, too. But since
the cache works fine we don't find it necessary to rebuild the entire
pool with larger SSDs.
We're currently sill on Nautilus, we want to upgrade to Octopus soon.
But I think we would vote for keeping the cache tier. :-)
Regards,
Eugen
Zitat von Neha Ojha <nojha@xxxxxxxxxx>:
Hi everyone,
We'd like to understand how many users are using cache tiering and in
which release.
The cache tiering code is not actively maintained, and there are known
performance issues with using it (documented in
https://docs.ceph.com/en/latest/rados/operations/cache-tiering/#a-word-of-caution).
We are wondering if we can deprecate cache tiering sometime soon.
Thanks,
Neha
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