I’m a mathematician too. They’re probably speaking from an intuitive grasp of utility.

“I love life on Earth… but I love capitalism more.”

Have you seen pictures of the sub? What makes you think the wiring was all hidden?

You joke, but watch this:

https://archive.org/details/take-me-to-titanic

from 29 minutes in. A last-minute adjustment before launch plugged in a thruster backwards; no protocol to check the behaviour prelaunch. They doscovered it when they got to the bottom.

The other thing to watch out for is if you’re splitting state between volumes, but i think you’ve already ruled that out.

I’d be cautious about the “kill -9” reasoning. It isn’t necessarily equivalent to yanking power.

Contents of application memory lost, yes. Contents of unflushed OS buffers, no. Your db will be fsyncing (or moral equivalent thereof) if it’s worth the name.

This is an aside; backing up from a volume snapshot is half a reasonable idea. (The other half is ensuring that you can restore from the backup, regularly, automatically, and the third half is ensuring that your automated validation can be relied on.)