Crash when running autoinstall with data generated from a previous install

[Olivier Gayot]

Steps to reproduce:

1. Perform a subiquity installation with kvm-test.py (no autoinstall) and use the default value everywhere (next, next, next, next, done...)

$ scripts/kvm-test.py -m 2G --install --overwrite --iso jammy-live-server-amd64.iso

2. Once the installation has finished, copy over the /var/log/installer/autoinstall-user-data file to the host.

3. Perform a second subiquity installation using the autoinstall file previously generated:

$ scripts/kvm-test.py -m 2G --install --overwrite --iso jammy-live-server-amd64.iso --autoinstall-file autoinstall-user-data

The install crashes during the curtin partitioning stage.

I'm attaching the logs of the first and second installation. The autoinstall-user-data file can be found in the first archive under var/log/install/autoinstall-user-data

[Olivier Gayot (ogayot)]

Reproduced today again using a kinetic ISO.

The invocations of `curtin install` in both runs look almost identical. Only the machine_id generated (and the resume_data directory) change ; which is expected.

The following differences are observed in curtin.log before everything starts failing:

https://pastebin.ubuntu.com/p/cHgvR3V6CK/

 * in red is where the autoinstall data was produced.
 * in green is where the autoinstall data was consumed - and the install failed.