gpg: Signature made Thu Jun 9 14:45:46 2022 UTC
gpg: using DSA key 0E4236CB52951E14536066222099B64CBF15490B
gpg: Good signature from "Andy Smith <andy@strugglers.net>" [unknown]
gpg: aka "Andrew James Smith <andy@strugglers.net>" [unknown]
gpg: aka "Andy Smith (UKUUG) <andy.smith@ukuug.org>" [unknown]
gpg: aka "Andy Smith (BitFolk Ltd.) <andy@bitfolk.com>" [unknown]
gpg: aka "Andy Smith (Linux User Groups UK) <andy@lug.org.uk>" [unknown]
gpg: aka "Andy Smith (Cernio Technology Cooperative) <andy.smith@cernio.com>" [unknown]
Hi,
TL;DR: If you're running in 32-bit PV mode you should not try to
update your kernel to version 5.9 or beyond, which means not to
Debian 11. Take some action first, like switching to PVH mode.
Otherwise it will not boot and you'll have to boot into the older
kernel again.
During this week's maintenance a worrying number of customer VMs
didn't boot because they were 32-bit PV and had been updated to a
kernel version of 5.9 or beyond. Debian 11 (bullseye) has kernel
version 5.10.
It's been mentioned a number of times here over the years that support
for 32-bit PV in the Linux kernel was going away at version 5.9, but
it looks like we haven't been able to communicate that as well as
we would have liked. The most recent attempt was here:
https://lists.bitfolk.com/lurker/message/20210930.104643.2ab5f9c0.en.html
If 32-bit PV is you then probably what you want to do is just switch
to PVH mode as mentioned at the top of that email.
Possibly the remaining people who need to see this just aren't on
the announce@ list. We could email every customer who is running
32-bit PV mode, but it would probably just serve to annoy those of
you who are never planning to update your kernels.
Finally, although switching to PVH should allow you to continue for
many years to come, nobody should be running 32-bit. We strongly
advise you to be planning your switch to amd64 as soon as possible
[advice since 2015].
Cheers,
Andy
--
https://bitfolk.com/ -- No-nonsense VPS hosting
