Bug 1591873
| Summary: | Set default filestore_merge_threshold = -10 | ||
|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Ceph Storage | Reporter: | Douglas Fuller <dfuller> |
| Component: | RADOS | Assignee: | Douglas Fuller <dfuller> |
| Status: | CLOSED ERRATA | QA Contact: | Tiffany Nguyen <tunguyen> |
| Severity: | high | Docs Contact: | Aron Gunn <agunn> |
| Priority: | high | ||
| Version: | 3.1 | CC: | agunn, cbodley, ceph-eng-bugs, ceph-qe-bugs, dfuller, dzafman, jharriga, kbader, kchai, kdreyer, mbenjamin, owasserm, sweil, vakulkar |
| Target Milestone: | rc | ||
| Target Release: | 3.1 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | RHEL: ceph-12.2.5-28.el7cp Ubuntu: ceph_12.2.5-14redhat1 | Doc Type: | Enhancement |
| Doc Text: |
.The `filestore_merge_threshold` option default has changed
Subdirectory merging has been disabled by default. The default value of the `filestore_merge_threshold` option has changed to -10 from 10. It has been observed to improve performance significantly on larger systems with a minimal performance impact to smaller systems. To take advantage of this performance increase set the `expected-num-objects` value when creating new data pools. See the link:{object-gw-production}#creating-a-data-pool-rgw-adv[Object Gateway for Production Guide] for more information.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-09-26 18:22:08 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: | 1602921 | ||
| Bug Blocks: | 1581350, 1584264 | ||
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Description
Douglas Fuller
2018-06-15 17:47:32 UTC
-10 is a better choice because the absolute value is used in some filestore calculations. Verified with build 12.2.5-39.el7cp. filestore_merge_threshold is set as -10 by default.
[root@c04-h05-6048r ~]# ceph -v
ceph version 12.2.5-39.el7cp (f12d44e46a54948a86dd27b16c77d97475ba2d4e) luminous (stable)
[root@c04-h05-6048r ~]# ceph daemon osd.0 config get filestore_merge_threshold
{
"filestore_merge_threshold": "-10"
}
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-2018:2819 |