Comment 24 for bug 2045586

I'm glad to hear you are seeing an improvement! The current implementation is still racy as mentioned in Comment #22. I did a search of the logs I downloaded, and I believe this one shows that the mount_partition() race isn't just theoretical:

https://autopkgtest.ubuntu.com/results/autopkgtest-mantic/mantic/amd64/l/livecd-rootfs/20230928_132941_a6800@/log.gz

So my suggestion is that we:

1) wait for systemd 255.3 to be merged in noble to fix the issue w/ `udevadm lock`
2) convert livecd-rootfs to use udevadm lock in noble, addressing the remaining known races.
3) backport `udevadm lock` to jammy (likely as a low-priority SRU)
4) backport the`udevadm lock` support to livecd-rootfs

I realize that'll take some time, so if you want to SRU the partial fix as a stop-gap, feel free.