** Description changed:
+ ========================================================================
+ SRU Justification:
+ 1. Impact: virsh save fails when cpu mode is passthrough
+ 2. Test case: create a VM with <cpu mode='host-passthrough'> (see below for
an example). Run
+ virsh managed save <vm domain> --bypass-cache --verbose
+ 3. Regression potential: The patch is minimal and should not affect any VMs
which are not cpud mode=passthrough
+ ========================================================================
+
+
Environment:
libvirt_cpu = host-passthrough
libvirt0, libvirt-bin 1.1.1-0ubuntu8~cloud2
qemu-kvm, qemu-utils, qemu-common 1.0+noroms-0ubuntu14.12
kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu14.12
apparmor 2.7.102-0ubuntu3.9
Kernel 3.5.0-44-generic
lsb-release Ubuntu 12.04.3 LTS
Problem:
I have a VM created with cpu mode = host-passthrough.
When I do
virsh managed save <vm domain> --bypass-cache --verbose,
the vm was left in shutoff, instead of runing and not able to start up even I
do virsh start <vm domain>
#virsh start instance-0000b600
error: Failed to start domain instance-0000b600
error: internal error: cannot load AppArmor profile
'libvirt-ba53a370-259f-4f47-b3e5-c76eddf4ec86'
in libvirtd.log
2013-12-19 12:08:49.169+0000: 27906: error : virCommandWait:2348 : internal
error: Child process (/usr/lib/libvirt/virt-aa-helper -p 0 -r -u
libvirt-ba53a370-259f-4f47-b3e5-c76eddf4ec86) unexpected exit status 1:
virt-aa-helper: error: could not parse XML
virt-aa-helper: error: could not get VM definition
2013-12-19 12:08:49.169+0000: 27906: error : AppArmorGenSecurityLabel:451 :
internal error: cannot load AppArmor profile
'libvirt-ba53a370-259f-4f47-b3e5-c76eddf4ec86'
2013-12-19 12:08:49.170+0000: 27906: warning : virAuditSend:135 : Failed to
send audit message virt=kvm resrc=disk reason=start vm="instance-0000b600"
uuid=ba53a370-259f-4f47-b3e5-c76eddf4ec86 old-disk="?"
new-disk="/var/lib/nova/instances/ba53a370-259f-4f47-b3e5-c76eddf4ec86/disk":
Operation not permitted
2013-12-19 12:08:49.170+0000: 27906: warning : virAuditSend:135 : Failed to
send audit message virt=kvm resrc=disk reason=start vm="instance-0000b600"
uuid=ba53a370-259f-4f47-b3e5-c76eddf4ec86 old-disk="?"
new-disk="/var/lib/nova/instances/ba53a370-259f-4f47-b3e5-c76eddf4ec86/disk.local":
Operation not permitted
2013-12-19 12:08:49.170+0000: 27906: warning : virAuditSend:135 : Failed to
send audit message virt=kvm resrc=net reason=start vm="instance-0000b600"
uuid=ba53a370-259f-4f47-b3e5-c76eddf4ec86 old-net=? new-net=fa:16:3e:0d:17:12:
Operation not permitted
2013-12-19 12:08:49.170+0000: 27906: warning : virAuditSend:135 : Failed to
send audit message virt=kvm resrc=mem reason=start vm="instance-0000b600"
uuid=ba53a370-259f-4f47-b3e5-c76eddf4ec86 old-mem=0 new-mem=16777216: Operation
not permitted
2013-12-19 12:08:49.170+0000: 27906: warning : virAuditSend:135 : Failed to
send audit message virt=kvm resrc=vcpu reason=start vm="instance-0000b600"
uuid=ba53a370-259f-4f47-b3e5-c76eddf4ec86 old-vcpu=0 new-vcpu=4: Operation not
permitted
2013-12-19 12:08:49.170+0000: 27906: warning : virAuditSend:135 : Failed to
send audit message virt=kvm op=start reason=restored vm="instance-0000b600"
uuid=ba53a370-259f-4f47-b3e5-c76eddf4ec86 vm-pid=-1: Operation not permitted
2013-12-19 12:08:49.170+0000: 27906: warning :
qemuDomainSaveImageStartVM:5452 : failed to restore save state label on
/var/lib/libvirt/qemu/save/instance-0000b600.save
If I restart libvirt-bin at this point, the error complains about Non-
empty feature list specified without CPU
2013-12-19 12:05:58.786+0000: 27913: info : libvirt version: 1.1.1
2013-12-19 12:05:58.786+0000: 27913: error : virCPUDefParseXML:367 : XML
error: Non-empty feature list specified without CPU model
2013-12-19 12:05:58.787+0000: 27913: error : virCPUDefParseXML:367 : XML
error: Non-empty feature list specified without CPU model
2013-12-19 12:05:58.788+0000: 27913: error : virCPUDefParseXML:367 : XML
error: Non-empty feature list specified without CPU model
2013-12-19 12:05:58.789+0000: 27913: error : virCPUDefParseXML:367 : XML
error: Non-empty feature list specified without CPU model
2013-12-19 12:05:58.790+0000: 27913: error : virCPUDefParseXML:367 : XML
error: Non-empty feature list specified without CPU model
When I check xml of save file, the CPU model information are missing.
#virsh save-image-dumpxml instance-0000b600
<cpu mode='host-passthrough'>
<feature policy='require' name='perfctr_nb'/>
<feature policy='require' name='perfctr_core'/>
<feature policy='require' name='topoext'/>
<feature policy='require' name='nodeid_msr'/>
<feature policy='require' name='lwp'/>
<feature policy='require' name='wdt'/>
<feature policy='require' name='skinit'/>
<feature policy='require' name='ibs'/>
<feature policy='require' name='osvw'/>
<feature policy='require' name='cr8legacy'/>
<feature policy='require' name='extapic'/>
<feature policy='require' name='cmp_legacy'/>
<feature policy='require' name='fxsr_opt'/>
<feature policy='require' name='mmxext'/>
<feature policy='require' name='osxsave'/>
<feature policy='require' name='monitor'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='vme'/>
</cpu>
xml of the vm
#virsh dumpxml <vm domain> --update-cpu
<cpu mode='host-passthrough' match='minimum'>
<model>Opteron_G4</model>
<vendor>AMD</vendor>
<feature policy='require' name='perfctr_nb'/>
<feature policy='require' name='perfctr_core'/>
<feature policy='require' name='topoext'/>
<feature policy='require' name='nodeid_msr'/>
<feature policy='require' name='lwp'/>
<feature policy='require' name='wdt'/>
<feature policy='require' name='skinit'/>
<feature policy='require' name='ibs'/>
<feature policy='require' name='osvw'/>
<feature policy='require' name='cr8legacy'/>
<feature policy='require' name='extapic'/>
<feature policy='require' name='cmp_legacy'/>
<feature policy='require' name='fxsr_opt'/>
<feature policy='require' name='mmxext'/>
<feature policy='require' name='osxsave'/>
<feature policy='require' name='monitor'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='vme'/>
</cpu>
I did not have the problem with libvirt 0.9.8 earlier, before upgrade
libvirt to 1.1.1
PS. I found the similar report here also
https://www.redhat.com/archives/libvirt-users/2013-November/msg00043.html
Thanks
regards,
Swe Aung
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https://bugs.launchpad.net/bugs/1262641
Title:
virsh save and virsh managedsave failed with cpu mode = host-
passthrough
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