Den ons 5 feb. 2020 kl 17:27 skrev Vladimir Prokofev <v...@prokofev.me>:

> Thank you for the insight.
> > If you're using the default options for rocksdb, then the size of L3 will
> be 25GB
> Where this number comes from? Any documentation I can read?
> I want to have a better understanding on how DB size is calculated.
>
>
https://github.com/facebook/rocksdb/wiki/Leveled-Compaction

Those pageson the right-side menu have all (and more!) you need to know
about rocksdb, which ceph uses.


> > If you're using the default options for rocksdb, then the size of L3 will
> > be 25GB. Since your block-db is only 20GB and L3 can only be filled if
> the
> > entire level's size is available, bluefs will begin spillover. Like Igor
> > said, having 30GB+ is recommended if you want to host up to 3 levels of
> > rocksdb in the SSD.
>
>
-- 
May the most significant bit of your life be positive.
_______________________________________________
ceph-users mailing list -- ceph-users@ceph.io
To unsubscribe send an email to ceph-users-le...@ceph.io

Reply via email to