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+++ This bug was initially created as a clone of Bug #1023366 +++ Description For non-root user, when executing commands "virsh blkiotune <domainVM>" or "virsh schedinfo <domainVM>", error will occurs but error message is not clear. Version: virt-manager-0.10.0-4.el7.noarch libvirt-1.1.1-9.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. Issue the following command to create a user and set its password: #useradd non-root ; passwd non-root 2. Switch to user "non-root" by command "su - non-root", and create or import a VM named "DomainU1" 3. Execute commands "blkiotune" or "schedinfo" under "non-root" user, and error will occurs. Actual results: 1. [non-root@localhost ~]$ virsh blkiotune DomainU1 error: Unable to get blkio parameters error: Requested operation is not valid: blkio cgroup isn't mounted 2. [non-root@localhost ~]$ virsh schedinfo DomainU1 Scheduler : Unknown error: Requested operation is not valid: cgroup CPU controller is not mounted The above error message is not clear. Expected results: Error message should be clear and improved. Additional info: This issue occurs both on RHEL7 and RHEL6.5
This issue also occurs on latest RHEL6.5
could reprodce on rhel6u5 with libvirt-0.10.2-29.el6_5.2.x86_64 $virsh schedinfo rhel6u5_qcow3 Scheduler : Unknown error: Requested operation is not valid: cgroup CPU controller is not mounted
Fixed upstream with commit v1.2.2-48-g45ad1ad: commit 45ad1adb4a5ae5ce46287c570e87abab6ffe62d6 Author: Martin Kletzander <mkletzan> Date: Thu Feb 27 13:10:32 2014 +0100 qemu: Reject unsupported tuning in session mode
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