Bug 1351323
| Summary: | Improve MMR replication convergence | ||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | Marcel Kolaja <mkolaja> |
| Component: | 389-ds-base | Assignee: | Noriko Hosoi <nhosoi> |
| Status: | CLOSED ERRATA | QA Contact: | Viktor Ashirov <vashirov> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 7.3 | CC: | arubin, ekeck, mkolaja, mreynolds, nhosoi, nkinder, pbokoc, rmeggins, salmy, snagar |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | 389-ds-base-1.3.4.0-33.el7_2 | Doc Type: | Enhancement |
| Doc Text: |
In a multi-master replication environment where multiple masters receive updates at the same time, it was previously possible for a single master to obtain exclusive access to a replica and hold it for a very long time due to problems such as a slow network connection. During this time, other masters were blocked from accessing the same replica, which considerably slowed down the replication process. This update adds a new configuration attribute, "nsds5ReplicaReleaseTimeout", which can be used to specify a timeout in seconds. After the specified timeout period passes, the master releases the replica, allowing other masters to access it and send their updates.
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Story Points: | --- |
| Clone Of: | 1349571 | Environment: | |
| Last Closed: | 2016-08-02 18:37:42 UTC | Type: | --- |
| 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: | 1349571 | ||
| Bug Blocks: | |||
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Description
Marcel Kolaja
2016-06-29 17:56:44 UTC
Build tested: 389-ds-base-1.3.4.0-33.el7_2 Reliability15 test was executed with replicas configured to use nsds5ReplicaReleaseTimeout: 60 Results: http://storm.idmqe.lab.eng.bos.redhat.com/qa/archive/ds/rhel72/reliab15/run4_1.3.4.0-33-convergence-fix/out/repl-monitor-output/ No issues found during the test. Convergence was achieved much sooner. Time lag was < 10 mins, compared to upto 5 hours with the default settings. Marking as verified. 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://rhn.redhat.com/errata/RHBA-2016-1544.html |