With the PXE script it is easy to boot different versions from one
folder without any copies because the kernel and PXE initrd are always
"fresh".
Instead of only supporting hardcoded file names, support parameters for
the kernel and initrd file to be used.
The qemu UEFI and regular qemu script only differ by having a default
value for the firmware. If one tries to switch between different
firmwares one normally would modify the script.
Make it easier to switch boot modes and use custom firmwares by
supporting a flag to set the pflash contents.
For testing TPM2-backed rootfs encryption it is handy to have a software
TPM option for the qemu script.
Add a flag for a software TPM with swtpm like kola also does. The user
has to specify a folder for the secret state and this won't be removed
because the same store should be able to be passed when booting the VM
again after shutdown.
When testing multiple images one always has to copy them to the
expected file name, and when trying to run two VMs this means one needs
to either use separate directories or modify the qemu script. One also
needs to modify the qemu script to bump the memory for K8s or for LUKS.
Support parameters for the VM image name and the VM memory.
We have an existing qemu_uefi_secure format definition, but it is
necessary to update it so that it actually works. Qemu needs to be
passed the correct flags to enable SMM, we need to switch to the Q35
machine, and we need to copy over the secboot variant of the OVMF
firmware.
Make qemu_template.sh work on MacOS
Line 14; The nproc command is only available on systems with GNU coreutils installed. The getconf _NPROCESSORS_ONLN alternative will work on a wider range of UNIX systems.
Line 114; The mktemp syntax used only works on GNU implementation.
Line 159; added hvf (MacOS) and tcg (no acceleration) options as a fallback. By doing this qemu-system-x86_64 will try to use kvm, but when it fails try hvf, and when that fails switch to the tcg accelerator.
It's been deprecated since QEMU 0.12. Fixes warning on QEMU startup:
qemu-system-x86_64: -net nic,vlan=0,model=virtio: 'vlan' is deprecated. Please use 'netdev' instead.
Setting `$VM_CDROM` in the qemu script does not work as expected when
installing Container Linux from the given bootable CDROM image. That's
probably because qemu-system-x86_64 expects another boot option `-boot
order=d` to be able to boot from the given CDROM drive. Let's specify
specify a `-boot` as well as `-drive` option for the given CDROM drive.
My primary use case for this flag is to fix booting with UEFI firmware
which can have problems when mixed with KVM, adding kexec into the mix
doesn't help matters either. The current version of OVMF can boot from
virtio drives just fine so that is now enabled and KVM is disabled.
So the -s option can also mean sloooooooow but boots!
The use of getopts was leading to conflicts between this script's short
options and qemu's long options. For example -serial was getting
interpreted as -s -- erial which is not very helpful.
If QEMU is given a uuid systemd will detect that and in turn use it for
the machine-id. This made the bug causing the machine-id to be always
re-generated on boot harder to notice since it didn't happen on QEMU.
Previously shifts were added into the getopts loop to work around
differences between different sh implementations but that causes getopts
to end the loop early. Instead use an intermediate variable to work
around inconsistent OPTIND behavior and explicitly check for the --
separator. Tested in bash, dash, and ash.
This one is more automagical and sets up ssh keys from ssh-agent and the
user's home directory by default. Also adds an option for setting the
ssh port so it can be something other than 2222. Script should be
sufficiently portable, tested in bash, dash, and ash.
