How Debian managed the systemd transition [LWN.net]

How Debian managed the systemd transition

Posted Sep 17, 2015 0:32 UTC (Thu) by luto (subscriber, #39314)
In reply to: How Debian managed the systemd transition by einstein
Parent article: How Debian managed the systemd transition

If someone implements a reboot-less upgrade from x.y to x.(y+1), and it actually works, I will personally buy them the beer or tasty non-alcoholic beverage of their choice*. Snapshotting the world and restoring using CRIU or similar tools doesn't count.

I've gotten emails from the ksplice team asking me how the heck they're supposed to handle a small number of individual entry changes I've made, and those are tiny compared to replacing the whole kernel.

* Within some reasonable limits.

How Debian managed the systemd transition

Posted Sep 22, 2015 16:20 UTC (Tue) by jejb (subscriber, #6654) [Link]

> If someone implements a reboot-less upgrade from x.y to x.(y+1), and it actually works, I will personally buy them the beer or tasty non-alcoholic beverage of their choice*. Snapshotting the world and restoring using CRIU or similar tools doesn't count.

Hey, that's not fair: to go from n to n+1 you know the only way is to save and restore the kernel state in a version independent manner, so you're trying to define the only possible method out of your challenge. The problem with the method is the time it takes, but there are people working on it

https://sslab.gtisc.gatech.edu/pages/kup.html