Hi, There is no need to rebuild all ODS. You can follow the procedure described by RedHat[0] to convert the DB and tell the OSD to use rocksdb. Couldn't find this documented elsewhere. You may need a RedHat account to access the content, but you could create a developer one for free IIRC. [0] https://access.redhat.com/solutions/3210951 --- Alex Cucu On Wed, Jan 22, 2020 at 5:30 PM Robert LeBlanc <robert@leblancnet.us> wrote:
In the last release of Jewel [0] it mentions that omap data can be stored in rocksdb instead of leveldb. We are seeing high latencies from compaction of leveldb on our Jewel cluster (can't upgrade at this time). I installed the latest version, but apparently that is not enough to do the conversion. Is there a way to move OSDs from leveldb to rocksdb without trashing and rebuilding all the osds?
[0] https://docs.ceph.com/docs/master/releases/jewel/
Thanks, Robert LeBlanc ---------------- Robert LeBlanc PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io