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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-8762) Check KVM disk files for activity before starting VM
Date Thu, 27 Aug 2015 12:10:45 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14716553#comment-14716553
] 

ASF GitHub Bot commented on CLOUDSTACK-8762:
--------------------------------------------

Github user miguelaferreira commented on the pull request:

    https://github.com/apache/cloudstack/pull/754#issuecomment-135403411
  
    It seems to me that the "VM volume/disk file activity checker" is a good candidate to
become a new class that can be tested independent, and reused elsewhere. What do you think
@bhaisaab?
    
    This would also make it easier to test in a Java integration (or unit) test. By fiddling
with the file system attributes.


> Check KVM disk files for activity before starting VM
> ----------------------------------------------------
>
>                 Key: CLOUDSTACK-8762
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8762
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Rohit Yadav
>            Assignee: Rohit Yadav
>             Fix For: 4.5.3, 4.6.0
>
>
> KVM hosts have real issue with fencing when storage are accessible by multiple hosts
such as in the case of NFS, in which case there is a possibility of qcow2 disks being accessed
by multiple hosts causing disk corruptions. The aim of this ticket is to explore ways to delay
starting a VM if the qcow2 disks/files are still being accessed.



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