------- Comment From [email protected] 2018-02-20 09:51 EDT-------
Yes(In reply to comment #10)
> If with qemu/qemu I try to start a guest it fails:
> qemu-system-ppc64: failed to initialize KVM: Permission denied
> As we have:
> crw-rw---- 1 root kvm 10, 232 Feb 20 11:42 /dev/kvm
>
> The attached ./sos_commands/kernel/dmesg has no apparmor Denies.
>

Correct. There are no denies.

> I have to set this to incomplete for now and need to ask:
> - why user qemu:qemu?

My bad, typos.. The user is "qemu" on Redhat, "libvirt-qemu" on Debian
variants.

> - if you set non default users you might need to change a lot to get it
> working.

Now that you confirmed there might not be an apparmor issue here, I see
libvirt-qemu doesnt have permissions to open directory
'/var/lib/libvirt/'.

I see libvirt-daemon-system.postinst file has
adduser --quiet \
--system \
--ingroup kvm \
--quiet \
--disabled-login \
--disabled-password \
--home /var/lib/libvirt \
--no-create-home \
--gecos "Libvirt Qemu" \
$PARAMETER_UID \
libvirt-qemu

So, Now I see the libvirt-qemu is created during the install of  
libvirt-daemon-system and has --no-create-home. And I see the directory
ls -lrt /var/lib/libvirt/ -d
drwx------ 7 root root 4096 Feb 17 08:23 /var/lib/libvirt/
has no permission for non-root user.

Now I am not sure if it is the package which created this directory with
such permissions Or it is the test automation scripts.

Satheesh,
Can you confirm if your test suite creates /var/lib/libvirt directory as part 
of test setup ? Or does it alter the permissions as we see above ?  On hosts 
where things are working I see the directory to have "drwxr-xr-x"..

Thanks,
Shivaprasad

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https://bugs.launchpad.net/bugs/1750543

Title:
  [power9][Ubuntu 18.04][4.15.0-10-generic][libvirt-bin-4.0.0-1ubuntu2]
  KVM guest unable start from libvirt "could not find capabilities for
  arch=ppc64le " (kvm)

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