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7.2. Block I/O Tuning
The
virsh blkiotune command allows administrators to set or display a guest virtual machine's block I/O parameters manually in the <blkio> element in the guest XML configuration.
To display current
<blkio> parameters for a virtual machine:
# virsh blkiotune virtual_machine
To set a virtual machine's
<blkio> parameters, refer to the following command and replace values according to your environment:
# virsh blkiotune virtual_machine [--weight number] [--device-weights string] [--config] [--live] [--current]
Parameters include:
weight- The I/O weight, within the range 100 to 1000.
device-weights- A single string listing one or more device/weight pairs, in the format of
/path/to/device,weight,/path/to/device,weight config- Add the
--config live- Add the
--liveNote
The--live current- Add the
--current
Note
See
# virsh help blkiotune for more information on using the virsh blkiotune command.
