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From "Alex Huang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-155) HA checks lead to unnecessary Compute Node reboot when Primary Storage is in Maintenance Mode
Date Thu, 20 Sep 2012 21:26:07 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13459979#comment-13459979
] 

Alex Huang commented on CLOUDSTACK-155:
---------------------------------------

A workaround for this problem is to disable the heartbeat process when doing storage maintenance
manually. 
                
> HA checks lead to unnecessary Compute Node reboot when Primary Storage is in Maintenance
Mode
> ---------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-155
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-155
>             Project: CloudStack
>          Issue Type: Bug
>          Components: KVM, Volumes
>    Affects Versions: pre-4.0.0
>            Reporter: Jarosław Dzbęk
>            Assignee: edison su
>             Fix For: 4.1.0
>
>         Attachments: ha.log
>
>
> We are using Cloudstack 3.0.2 using KVM on Ubuntu 12.04 with PrimaryStorage over NFS
> When we enable Maintenance Mode on a PrimaryStorage and disconnect the storage machine
for reconfiguration the heartbeat checks on the KVM lead to an unwanted reboot of KVM Compute
Nodes.
> The /usr/lib64/cloud/agent/scripts/vm/hypervisor/kvm/kvmheartbeat.sh script is correctly
identifying a persistent problem with the disconnected storage pool. The problem is that this
pool was intentionally put into maintenance mode and MAY be unavailable.

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