virsh blkiotune gives error "blkio cgroup isn't mounted"

Solution Unverified - Updated -

Issue

  • virsh blkiotune command gives error "blkio cgroup isn't mounted"

virsh blkiotune
instance-0000001
error: Unable to get blkio parameters
error: Requested operation is not valid: blkio cgroup isn't mounted

Environment

  • Red Hat Enterprise Linux 7

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