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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-8762) Check KVM disk files for activity before starting VM
Date Thu, 27 Aug 2015 16:23:46 GMT


ASF GitHub Bot commented on CLOUDSTACK-8762:

Github user bhaisaab commented on the pull request:
    @miguelaferreira okay, I'll see what I can do. I'm also exploring other ways to detech
if the vm disk file has changed, using an exhaustive checksum comparison for example as file
attributes cannot be trusted for nfs partitions that were mounted with noatime. I would also
like to discuss perhaps here, if anyone has better ideas or suggestions.

> Check KVM disk files for activity before starting VM
> ----------------------------------------------------
>                 Key: CLOUDSTACK-8762
>                 URL:
>             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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