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https://issues.apache.org/jira/browse/CLOUDSTACK-8443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552462#comment-14552462
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Marcus Sorensen commented on CLOUDSTACK-8443:
---------------------------------------------
We need to fix the python agent setup scripts to not add the cgroup_controllers
line to /etc/libvirt/qemu.conf.
> Support CentOS7 as KVM host
> ---------------------------
>
> Key: CLOUDSTACK-8443
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8443
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Affects Versions: 4.5.0, 4.6.0, 4.5.1
> Reporter: Rohit Yadav
> Assignee: Rohit Yadav
> Priority: Critical
>
> CentOS7 as KVM host fails with exception:
> 2015-05-05 21:39:45,395{GMT} WARN [kvm.resource.LibvirtComputingResource]
> (agentRequest-Handler-5:) LibvirtException
> org.libvirt.LibvirtException: Controller 'cpuacct' is not wanted, but 'cpu'
> is co-mounted: Invalid argument
> at org.libvirt.ErrorHandler.processError(Unknown Source)
> at org.libvirt.Connect.processError(Unknown Source)
> at org.libvirt.Connect.processError(Unknown Source)
> at org.libvirt.Connect.domainCreateXML(Unknown Source)
> at
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.startVM(LibvirtComputingResource.java:1267)
> at
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.execute(LibvirtComputingResource.java:3828)
> at
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.executeRequest(LibvirtComputingResource.java:1361)
> After umounting cpuacct (umount /sys/fs/cgroup/cpuacct), and restarting host,
> the exception seen is: (also seen after upgrading linux kernel to 4.0.1)
> 2015-05-05 21:40:15,875{GMT} WARN [kvm.resource.LibvirtComputingResource]
> (agentRequest-Handler-5:) LibvirtException
> org.libvirt.LibvirtException: unsupported configuration: CPU tuning is not
> available on this host
> at org.libvirt.ErrorHandler.processError(Unknown Source)
> at org.libvirt.Connect.processError(Unknown Source)
> at org.libvirt.Connect.processError(Unknown Source)
> at org.libvirt.Connect.domainCreateXML(Unknown Source)
> at
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.startVM(LibvirtComputingResource.java:1267)
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