3.6 Journal: the lab exists

Daily note, four headings, and this one deserves a good entry, because today the lab stopped being theoretical.

Under what I did: hypervisor and version installed, which ISOs you collected, and the full arc of practice01: built, installed, snapshotted, destroyed, restored, deleted. Write the arc out; it reads like a story because it was one.

Under what broke: the Broadcom portal counts, and so does anything the Ubuntu installer did that surprised you, any Hyper-V or performance warning, any checksum that didn't match on the first try. If the reboot-after-rm failed differently than the lesson described, write down the exact error you saw; that's your version of the truth, and it's worth more than mine.

Under what I learned: explain in your own words why the snapshot revert brought back a machine you'd destroyed. Where was the intact copy living? If you can answer that, you understand what a snapshot is; if you can't, that's a fine open question.

Under open questions: how the VM got an IP address without you configuring one is an excellent thing to wonder about, and Module 4 exists to answer it. So is "what's the difference between reverting a snapshot and restoring a backup," which Module 15 takes seriously.

Commit and push:

cd ~/git/lab-journal
git add -A
git commit -m "journal: module 3, first VM built, killed, and resurrected"
git push

Tick Module 3 in Projects/lab-progress.md.