QEMU image

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A QEMU image was created on each disk file system, as shown in Figure 1.

Figure 1. QEMU image mapping
QEMU image mapping

A 1:1 image-to-disk setup was selected to allow a balanced workload scaling. The “preallocation” option of full ensures that space is preallocated prior to use.

An example of the qemu-img command options used is shown below in Figure 2.

Figure 2. Example qemu-img command
$ qemu-img create -f raw -o preallocation=full A_IMAGE_NAME 1G