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[Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might not boot on Xen

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  [Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might not boot  on Xen Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2018-07-15 14:10 +0200
    Re: [Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might not  boot on Xen "Torben Schou Jensen" <tsj@swampthing.dk> - 2018-07-16 21:10 +0200
      Re: [Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might  not boot on Xen Andy Hawkins <andy@gently.org.uk> - 2018-07-17 23:20 +0200

#197659 — [Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might not boot on Xen

Hi,

if you are running Debian on Xen you should keep your eyes open when
upgrading the kernel.
For me, the kernel 4.9.110-1 from the linux-image-4.9.0-7-amd64 package
wouldn't boot as a DomU kernel. As I've read, it won't work as a Dom0
kernel either (I didn't check that, though).

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903767

-- 
Regards
  mks

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#197706 — Re: [Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might not boot on Xen

Yep, I had same problem last night, lucky me I started by upgrading a test
server before production server.

I just see a workaround have been posted.
This workaround work here while we wait for a real stable kernel update.

<Bug#903821: 4.9.110-1 Xen PV boot workaround
<Adding pti=off to the kernel boot parameters will work around the issue
for <now!

Brgds
Torben

> Hi,
>
> if you are running Debian on Xen you should keep your eyes open when
> upgrading the kernel.
> For me, the kernel 4.9.110-1 from the linux-image-4.9.0-7-amd64 package
> wouldn't boot as a DomU kernel. As I've read, it won't work as a Dom0
> kernel either (I didn't check that, though).
>
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903767
>
> --
> Regards
>   mks
>
>


-- 
Torben Schou Jensen
Swamp Thing
Homepage: http://swampthing.dk/~tsj/
Skype: swampthing38

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#197745 — Re: [Xen]: Heads UP: kernel from linux-image-4.9.0-7-amd64 might not boot on Xen

Hi,

In article <9e5cd72f3a49245a58b3263d5976f96e.squirrel@swampthing.dk>,
           Torben Schou Jensen<tsj@swampthing.dk> wrote:
> Yep, I had same problem last night, lucky me I started by upgrading a test
> server before production server.
>
> I just see a workaround have been posted.
> This workaround work here while we wait for a real stable kernel update.
>
> <Bug#903821: 4.9.110-1 Xen PV boot workaround
> <Adding pti=off to the kernel boot parameters will work around the issue
> for <now!

Just tried this on a test VM, and as expected it failed to boot after
updating.

Added pit=off and it boots, but during the boot it fails to mount some NFS
mounts that are listed in fstab. If I run 'mount -a' once it's booted, the
mounts succeed.

Presumably this is some other change as a result of this update? Anyone else
seen this?

I've reverted back to the snapshot I took before applying the updates, and
it's working again. Will hold off applying the updates for now until I can
work out what's going on.

Any advice appreciated.

Andy

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