Bug 1483224
| Summary: | [RHCS 2.y] [RFE] Addition of online osd 'omap'compaction command | ||
|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Ceph Storage | Reporter: | Vikhyat Umrao <vumrao> |
| Component: | RADOS | Assignee: | Josh Durgin <jdurgin> |
| Status: | CLOSED ERRATA | QA Contact: | ceph-qe-bugs <ceph-qe-bugs> |
| Severity: | high | Docs Contact: | Bara Ancincova <bancinco> |
| Priority: | high | ||
| Version: | 2.3 | CC: | anharris, ceph-eng-bugs, dzafman, icolle, jdurgin, kchai, kdreyer, tserlin, vakulkar, wusui |
| Target Milestone: | rc | Keywords: | FutureFeature |
| Target Release: | 2.4 | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHEL: ceph-10.2.7-45.el7cp Ubuntu: ceph_10.2.7-45redhat1 | Doc Type: | Enhancement |
| Doc Text: |
.A new `compact` command
With this update, the OSD administration socket supports the `compact` command. A large number of `omap` create and delete operations can cause the normal compaction of the `levelDB` database during those operations to be too slow to keep up with the workload. As a result, `levelDB` can grow very large and inhibit performance. The `compact` command compacts the `omap` database (`levelDB` or `RocksDB`) to a smaller size to provide more consistent performance.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-10-17 18:12:51 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: | 1473436, 1479701 | ||
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Description
Vikhyat Umrao
2017-08-19 11:52:22 UTC
Jewel backport tracker and PR: http://tracker.ceph.com/issues/20675 https://github.com/ceph/ceph/pull/17101 I am marking this verified because it works on a newly installed system. However on an osd after I performed the operations in step 10 of https://bugzilla.redhat.com/show_bug.cgi?id=1462011, I got: [root@magna007 ceph-5]# ceph daemon osd.5 compact admin_socket: exception getting command descriptions: [Errno 2] No such file or directory admin_socket: exception getting command descriptions: [Errno 2] No such file or directory I am not sure if this is a problem or not. I am also updating bz 1462011 as well. Has this fix made it into Ubuntu yet? On my test unbuntu setup, I get: root@magna024:/var/lib/ceph/osd/ceph-5# ceph daemon osd.5 compact no valid command found; 10 closest matches: git_version getomap <pool> <objectname> get_command_descriptions flush_journal get_latest_osdmap get_heap_property <property> dump_ops_in_flight dump_op_pq_state dump_watchers dump_reservations admin_socket: invalid command admin_socket: invalid command Passed on both Ubuntu and Rhel. I ran into a slight gotcha in that I ran some of the commands as root rather than the ceph user. Josh helped me a bit and things worked after we changed permissions and ran as the correct user. This comment also applies to bugzilla #1462011 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-2017:2903 |