Hello,
I'm testing some control groups features on a rh el 6.2 host as
hypervisor and their effects inside one of its vms named testvm
vm insists on some multipath devices on host, so 253:N devices. I want
to limit I/O and run:
echo "253:0 5000000" >
/cgroup/blkio/libvirt/qemu/testvm/blkio.throttle.write_bps_device
echo "253:1 5000000" >
/cgroup/blkio/libvirt/qemu/testvm/blkio.throttle.write_bps_device
echo "253:2 5000000" >
/cgroup/blkio/libvirt/qemutestvm/blkio.throttle.write_bps_device
echo "253:3 5000000" >
/cgroup/blkio/libvirt/qemu/testvm/blkio.throttle.write_bps_device
echo "253:5 5000000" >
/cgroup/blkio/libvirt/qemu/testvm/blkio.throttle.write_bps_device
echo "253:6 5000000" >
/cgroup/blkio/libvirt/qemu/testvm/blkio.throttle.write_bps_device
On hypervisor:
# cgget -r blkio.throttle.read_bps_device libvirt/qemu/testvm
libvirt/qemu/testvm:
blkio.throttle.read_bps_device: 253:6 5000000
253:5 5000000
253:3 5000000
253:2 5000000
253:1 5000000
253:0 5000000
Now if I want to reset the values for blkio.throttle.write_bps_device
to their original ones (so no limit), to have
# cat /cgroup/blkio/libvirt/qemu/testvm/blkio.throttle.write_bps_device
that returns no value, which syntax can I use?
Thanks in advance,
Gianluca
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