Your message dated Sun, 12 Jun 2011 19:32:30 +0200
with message-id <[email protected]>
and subject line Re: [Pkg-libvirt-maintainers] Bug#630212: libvirt-bin: libvirt
doesn't spawn qemu with supplementary groups
has caused the Debian Bug report #630212,
regarding libvirt-bin: libvirt doesn't spawn qemu with supplementary groups
to be marked as done.
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Bug report if necessary, and/or fix the problem forthwith.
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630212: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=630212
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--- Begin Message ---
Package: libvirt-bin
Version: 0.8.3-5+squeeze1
Severity: important
Tags: upstream
If you configure libvirt to spawn qemu with it's own user you can run into
problems getting KVM to work. This is because although the qemu user belongs
to the kvm and disk groups without calling initgroups the spawned process
won't be able to access /dev/kvm (root:kvm) and much hilarity/head scratching
will ensue.
This problem has been documented upstream and has been patched in recent
releases:
https://bugzilla.redhat.com/show_bug.cgi?id=664406
In the end the workaround I applied was to nail the /dev/kvm device to:
ls -l /dev/kvm
crw-rw---- 1 root qemu 10, 232 Jun 12 11:51 /dev/kvm
And nailed it up with:
cat /etc/udev/rules.d/99-local-permissions.rules
# Make kvm available to qemu
KERNEL=="kvm", GROUP="qemu", MODE="0660"
-- System Information:
Debian Release: 6.0.1
APT prefers stable
APT policy: (990, 'stable'), (500, 'stable-updates')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) (ignored: LC_ALL
set to en_GB.UTF-8)
Shell: /bin/sh linked to /bin/dash
--- End Message ---
--- Begin Message ---
Version: libvirt/0.9.0-1
On Sun, Jun 12, 2011 at 12:25:56PM +0200, Alex Bennee wrote:
> Package: libvirt-bin
> Version: 0.8.3-5+squeeze1
> Severity: important
> Tags: upstream
>
>
> If you configure libvirt to spawn qemu with it's own user you can run into
> problems getting KVM to work. This is because although the qemu user belongs
> to the kvm and disk groups without calling initgroups the spawned process
> won't be able to access /dev/kvm (root:kvm) and much hilarity/head scratching
> will ensue.
This has been fixed in upstream commit
c685993d71c1cf561af2cf34a5077781566aa0e0.
Cheers,
-- Guido
--- End Message ---
