Bug 1500100
| Summary: | [RHCS 2.y] Change default filestore 'omap' backend to 'rocksdb' from 'leveldb' | ||
|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Ceph Storage | Reporter: | Vikhyat Umrao <vumrao> |
| Component: | RADOS | Assignee: | Josh Durgin <jdurgin> |
| Status: | CLOSED ERRATA | QA Contact: | Parikshith <pbyregow> |
| Severity: | high | Docs Contact: | Aron Gunn <agunn> |
| Priority: | high | ||
| Version: | 2.3 | CC: | agunn, anharris, ceph-eng-bugs, ceph-qe-bugs, dzafman, gmeno, hnallurv, jdurgin, kchai, kdreyer, mhackett, tserlin, uboppana |
| Target Milestone: | rc | Keywords: | FutureFeature |
| Target Release: | 2.5 | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHEL: ceph-10.2.10-10.el7cp Ubuntu: ceph_10.2.10-7redhat1xenial | Doc Type: | Enhancement |
| Doc Text: |
.`RocksDB` is enabled as an option to replace `levelDB`
This update enables an option to use the `RocksDB` back end for the `omap` database as opposed to `levelDB`. `RocksDB` uses the multi-threading mechanism in compaction so that it better handles the situation when the `omap` directories become very large (more than 40 G). `LevelDB` compaction takes a lot of time in such a situation and causes OSD daemons to time out.
For details about conversion from `levelDB` to `RocksDB`, see the link:https://access.redhat.com/solutions/3210951[Ceph - Steps to convert OSD omap backend from leveldb to rocksdb] solution on Red Hat Customer Portal.
|
Story Points: | --- |
| Clone Of: | 1462011 | Environment: | |
| Last Closed: | 2018-02-21 19:44:55 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1536401 | ||
|
Comment 8
Ken Dreyer (Red Hat)
2018-01-02 20:42:08 UTC
(In reply to Ken Dreyer (Red Hat) from comment #8) > Josh, ceph-2-rhel-patches branch's src/common/config_opts.h still has > OPTION(filestore_omap_backend, OPT_STR, "leveldb"). > > https://github.com/ceph/ceph/pull/18010/commits has "osd: switch filestore > to default to rocksdb", is that all we need for this BZ or is there more? That's all that's needed. Would you please cherry-pick this to ceph-2-rhel-patches with Resolves: rhbz#1500100, in that case? pushed to ceph-2-rhel-patches Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:0340 |