** Also affects: systemd (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: systemd (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Description changed:
+ Cherrypick
+
https://github.com/systemd/systemd/commit/3776f9cf00b163eedeb0325691d23df11385cbc5
+
It appears that Xen-based VMs sometimes report themselves as Microsoft
Hyper-V via CPUID — apparently this is for compatibility with Windows
guests. systemd 237 (as found in Bionic) gives preference to this CPUID
information when detecting Xen, and thus it erroneously assumes that the
guest is running under Hyper-V. This causes Xen-related services (and
anything else that relies on systemd's VM-detection functionality) to
fail.
I *believe* this is a regression from systemd 229 as used in Xenial — we
have at least a few Xen-based VMs that report as Hyper-V via CPUID and
don't have this issue on that version — but i haven't confirmed that for
certain.
Anyway, i've submitted a ticket with more details to the up-stream
project, and that has now been resolved through a fairly simple change
which applies cleanly to the Bionic systemd sources:
https://github.com/systemd/systemd/issues/8844
Would it be possible to pull this down? As mentioned, Xen-based Ubuntu
VMs can seriously misbehave without it.
Thanks!
See also: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1728573
---
% lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04
% apt-cache policy systemd
systemd:
- Installed: 237-3ubuntu10
- Candidate: 237-3ubuntu10
- Version table:
- *** 237-3ubuntu10 500
- 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
- 100 /var/lib/dpkg/status
+ Installed: 237-3ubuntu10
+ Candidate: 237-3ubuntu10
+ Version table:
+ *** 237-3ubuntu10 500
+ 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
+ 100 /var/lib/dpkg/status
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https://bugs.launchpad.net/bugs/1768104
Title:
systemd sometimes misdetects Xen VMs (fixed up-stream)
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