Limiting KVM guest disk bandwidth (I/O throttling )
1 Limiting VM1's I/O bandwidth with 1Mbps.
# echo "8:0 10485760" > /cgroup/blkio/libvirt/qemu/VM1/blkio.throttle.read_bps_device 8:0 MAJ:MIN /dev/sda
10485760 1Mbps
1 Limiting VM1's I/O bandwidth with 1Mbps.
# echo "8:0 10485760" > /cgroup/blkio/libvirt/qemu/VM1/blkio.throttle.read_bps_device
# echo "8:0 10485760" > /cgroup/blkio/libvirt/qemu/VM1/blkio.throttle.write_bps_device
10485760 1Mbps
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