[bitfolk] Do not try to upgrade a BitFolk VM to Ubuntu 20.04…

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Author: Andy Smith
Date:  
To: announce
New-Topics: [bitfolk] Ubuntu 20.04 now supported (Was Re: Do not try to upgrade a BitFolk VM to Ubuntu 20.04 yet)
Subject: [bitfolk] Do not try to upgrade a BitFolk VM to Ubuntu 20.04 yet

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gpg: Signature made Thu Apr 23 17:15:03 2020 UTC
gpg: using DSA key 2099B64CBF15490B
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,

Ubuntu 20.04 is scheduled to be released at some point today. As
things stand its kernel won't boot at BitFolk.

I think it's due to some bugs in Xen's LZ4 decompression. These
problems have since been fixed but it would mean a forced reboot to
deploy them and I'm not going to do that, for this.

I will let you know when there is a host available that will boot
these LZ4-compressed kernels, so if you are desperate to upgrade to
20.04 you can be moved there.

If you already did try to upgrade to 20.04 and now it doesn't boot,
your previous (18.04) kernel will boot, which clearly isn't ideal
but does at least regain access.

Possibly you could build a custom kernel that doesn't use LZ4 or
find a way to unpack (and optionally repack) the existing vmlinuz.

I'll follow up with more info as I experiment with that.

Cheers,
Andy

--
https://bitfolk.com/ -- No-nonsense VPS hosting
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