Your message dated Sun, 10 May 2020 16:24:33 +0300
with message-id <[email protected]>
and subject line Re: qemu: The guest OS locks up or reports an unstable
clocksource
has caused the Debian Bug report #869767,
regarding qemu: The guest OS locks up or reports an unstable clocksource
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
869767: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869767
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: qemu
Version: 1:2.8+dfsg-6+deb9u1
Severity: important
Dear Maintainer,
after the latest qemu update (to 1:2.8+dfsg-6+deb9u1) I started
observing instabilities in my x86_64 guest VMs.
- A Centos 6.4 guest reliably locks up not more than 10 minutes after
being booted.
- A Ubuntu 14.10 occasionally hangs for a few seconds and the log
contains the string "Clocksource tsc unstable (delta = 62606051 ns)".
I have not observed any of these symptoms before the qemu update.
A possible workaround for the Centos lock-up is to add the kernel option
"no-kvmclock" to the kernel boot parameters in the guest. This seems to
have stabilised the Centos VM for me.
Please let me know if you need further description of my host or guest
setup.
Thanks,
Thomas
-- System Information:
Debian Release: 9.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.12.3.tp (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages qemu depends on:
ii qemu-system 1:2.8+dfsg-6+deb9u1
ii qemu-user 1:2.8+dfsg-6+deb9u1
ii qemu-utils 1:2.8+dfsg-6+deb9u1
qemu recommends no packages.
Versions of packages qemu suggests:
pn qemu-user-static <none>
-- no debconf information
--- End Message ---
--- Begin Message ---
Version: 1:5.0-1
This is an old bugreport filed against old version of qemu and/or kernel,
hopefully the issue in question has been fixed long ago, so closing this
bugreport now. If the issue is still relevant today with current version
of qemu and kernel, please reopen this bugreport.
Thanks,
/mjt
--- End Message ---
