On 5/8/19 10:52 PM, Gregory Farnum wrote: > On Wed, May 8, 2019 at 5:33 AM Dietmar Rieder > <dietmar.rieder@xxxxxxxxxxx> wrote: >> >> On 5/8/19 1:55 PM, Paul Emmerich wrote: >>> Nautilus properly accounts metadata usage, so nothing changed it just >>> shows up correctly now ;) >> >> OK, but then I'm not sure I understand why the increase was not sudden >> (with the update) but it kept growing steadily over days. > > Tracking the amount of data used by omap (ie, the internal RocksDB) > isn't really possible to do live, and in the past we haven't done it > at all. In Nautilus, it gets stats whenever a deep scrub happens so > the omap data is always stale, but at least lets us approximate what's > in use for a given PG. > > So when you upgraded to Nautilus, the metadata pool scrubbed PGs over > a period of days and each time a PG scrub finished the amount of data > accounted to the pool as a whole increased. :) > -Greg Thanks for this clear explanation. BTW what is the difference between the two following metrics: ceph_pool_stored_raw ceph_pool_stored I expected that ceph_pool_stored_raw should large values than ceph_pool_stored, depending on the redundancy/replication level, however at least in our case the values are the same. Best Dietmar -- _________________________________________ D i e t m a r R i e d e r, Mag.Dr. Innsbruck Medical University Biocenter - Division for Bioinformatics Innrain 80, 6020 Innsbruck Phone: +43 512 9003 71402 Fax: +43 512 9003 73100 Email: dietmar.rieder@xxxxxxxxxxx Web: http://www.icbi.at
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