VM Loop Test

This is a script to run a number VMs in parallel to perform a basic test of the KVM/ARM host functionality for AArch64.

Each VM will boot, run hackbench and cyclictest, reboots, runs hackbench and cyclictest again, and finally shuts down.

This continues in a loop until a failure is detected or the user interrupts the test with ctrl+C, in which case the script will wait for the VMs to shut down and exit cleanly.

A number of files are required in this directory to run the test:

• debian-arm64.qcow2: a qcow2 guest file system image used to create shallow clones (using the main file system as a backing file for each guest instance). This FS must support logging in with root/kvm as the root user/password.
• Image: a guest kernel named 'Image'
• qemu-system-aarch64: A QEMU binary

You can either create these files manually (for example by copying the from somewhere) or you can run setup-loop-test.sh when you first clone this repo to have them automatically generated for you (it will attempt to clone and compile the latest released Linux and QEMU versions and create a Debian sid image).

Usage

Simply run ./loop-test.sh <j> where <j> is the number of parallel guests you want to run.

Hints

You can enjoy the progress of this test script by following the guest outputs doing something like this:

tail -F tmp-$PID/guest0.log

Assuming $PID is the PID of the loop-test.sh. script.