Bug 131073
Summary: | Services do not migrate to their preferred host in a 2-member cluster, when both hosts come up almost simultaneously | ||
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Product: | [Retired] Red Hat Cluster Suite | Reporter: | Satya Prakash Tripathi <sptripathi78> |
Component: | clumanager | Assignee: | Lon Hohberger <lhh> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | Cluster QE <mspqa-list> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 3 | CC: | cluster-maint |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i686 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | 1.2.28 | Doc Type: | Bug Fix |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2005-11-22 13:48:13 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: |
Description
Satya Prakash Tripathi
2004-08-27 10:04:25 UTC
Intersting; this works for me. There's a lot of noise from the translation from RHEL 2.1, but it looks like your configuration is correct. Does it occur without soft quorum enabled? You could apply this patch which fixes performance and other problems with the IP tiebreaker (fix to previous patch): http://bugzilla.redhat.com/bugzilla/attachment.cgi?id=103180&action=view Responding to your comment #1: We have only two member cluster, so that if I don't force soft-quorum( either using cluforce at runtime or permanently using cludb), the clusters on the two hosts don't form a quorum when the hosts come up. As I understand it, it's becuase when host1 comes up, it finds that 2/1=1 members are up, which is not a majority( it's just half, not more than half ). Sadly, by the time the host2 comes up, it finds that the host1's cluster is inactive and host2 can not form a quorum by itself, again for the abovestated reson. That's why we need to enable soft-quorum so that one host with active cluster can form a quorum. If you know any other/better workaround for this problem, please suggest! Responding to your comment #3: I've applied this patch. Will update this bug with the results, after some experiments. Thanks. As a side note, I really think the problem observed which caused "soft quorum" to be disabled per default should be fixed by this patch. Hi Satya, Any luck with the applied patches? Hi Lon, sorry for the long silence. It does work for us. No new occurences of this problem reoprted. So you can close this bug. Thanks a lot! |