Bug 638592
| Summary: | make corosync more resilient to delayed multicast packets | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | corosync | Assignee: | Steven Dake <sdake> |
| Status: | CLOSED ERRATA | QA Contact: | Cluster QE <mspqa-list> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 6.0 | CC: | cluster-maint, jkortus, jwest, pm-eus, sdake, ssaha |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | corosync-1.2.3-21.el6_0.1 | Doc Type: | Bug Fix |
| Doc Text: |
Compared to a unicast token, certain network switches add an extra delay to the transmission of a multicast packet. Consequent to this, multicast messages may have been retransmitted, even though the message was not lost and the retransmission was therefore not necessary. This update introduces the "miss_count_const" constant that allows a user to specify the maximum number of times a message is checked for retransmission before the retransmission is performed.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-03-17 12:28:58 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: | 619496 | ||
| Bug Blocks: | |||
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Description
RHEL Program Management
2010-09-29 12:54:58 UTC
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
OpenAIS has been enabled to work in network environments wherein multicast messages are slightly delayed when compared to token messages.
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -1 +1 @@
-OpenAIS has been enabled to work in network environments wherein multicast messages are slightly delayed when compared to token messages.+Compared to a unicast token, certain network switches add an extra delay to the transmission of a multicast packet. Consequent to this, multicast messages may have been retransmitted, even though the message was not lost and the retransmission was therefore not necessary. This update introduces the "miss_count_const" constant that allows a user to specify the maximum number of times a message is checked for retransmission before the retransmission is performed.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0360.html |