stopping cman at the same time on two nodes fails to stop qdiskd on one of them when using master_wins mode in a RHEL 6 High Availability cluster

Solution Unverified - Updated -

Issue

  • Sometimes we have the problem during stopping cman on one cluster node
  • When stopping cman on both nodes at once, one of them fails to stop qdiskd, and then I can't get it to stop in subsequent attempts either unless I force kill the daemon
# service cman stop
Stopping cluster:
   Leaving fence domain...                                 [  OK  ]
   Stopping gfs_controld...                                [  OK  ]
   Stopping dlm_controld...                                [  OK  ]
   Stopping fenced...                                      [  OK  ]
   Stopping qdiskd...
                                                           [FAILED]

Environment

  • Red Hat Enterprise Linux (RHEL) 6 with the High Availability Add On
  • cman-3.0.12.1-49.el6 or later
  • Cluster configured to use a quorum device (<quorumd/> exists in /etc/cluster/cluster.conf)
    • The quorum-device daemon is configured to use master_wins mode through either:
      • <quorumd master_wins="1"/> in /etc/cluster/cluster.conf, or
      • There are no <heuristic/>s configured under <quorumd/> in /etc/cluster/cluster.conf and it is a two-node cluster
  • Stopping cman on both nodes right about the same time

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.