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[libvirt] libvirt accidentally destroys guests after being restarted



Hello.
We notice a very upsetting behavior of how libvirtd deals with running domains after being restarted.
Namely, in 10-20s after start libvirtd may accidentally kill a random number of running (qemu) domains with SIGTERM.

Here is what we get in libvirt log: 

2013-02-27 12:35:10.415+0000: 45777: info : libvirt version: 1.0.2
2013-02-27 12:35:10.415+0000: 45777: error : virNWFilterSnoopLeaseFileRefresh:1903 : open("/var/run/libvirt/network/nwfilter.ltmp"): No such file or directory
2013-02-27 12:35:21.772+0000: 45766: error : qemuMonitorIO:602 : internal error End of file from monitor
2013-02-27 12:35:21.772+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet34" not in key map
2013-02-27 12:35:21.905+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet34: No such device
2013-02-27 12:35:22.029+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet35" not in key map
2013-02-27 12:35:22.032+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet35: No such device
2013-02-27 12:35:22.430+0000: 45766: error : qemuMonitorIO:602 : internal error End of file from monitor
2013-02-27 12:35:22.430+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet4" not in key map
2013-02-27 12:35:22.433+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet4: No such device
2013-02-27 12:35:22.554+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet5" not in key map
2013-02-27 12:35:22.557+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet5: No such device
2013-02-27 12:35:22.794+0000: 45766: error : qemuMonitorIO:602 : internal error End of file from monitor
2013-02-27 12:35:22.794+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet10" not in key map
2013-02-27 12:35:22.797+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet10: No such device
2013-02-27 12:35:22.944+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet11" not in key map
2013-02-27 12:35:22.947+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet11: No such device
2013-02-27 12:35:23.194+0000: 45766: error : qemuMonitorIO:602 : internal error End of file from monitor
2013-02-27 12:35:23.194+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet14" not in key map
2013-02-27 12:35:23.197+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet14: No such device
2013-02-27 12:35:23.361+0000: 45766: error : virNWFilterDHCPSnoopEnd:2131 : internal error ifname "vnet15" not in key map
2013-02-27 12:35:23.364+0000: 45766: error : virNetDevGetIndex:653 : Unable to get index for interface vnet15: No such device


And this is what we get by grepping 45766 in separate logs of vms:

drafter 10-5-0-11:/var/log/libvirt/qemu$ sudo grep -A 1 45766 * 
vm010-001-206-002.log:qemu: terminating on signal 15 from pid 45766
vm010-001-206-002.log-2013-02-27 12:35:22.430+0000: shutting down
--
vm010-001-207-002.log:qemu: terminating on signal 15 from pid 45766
vm010-001-207-002.log-2013-02-27 12:35:22.794+0000: shutting down
--
vm010-001-228-006.log:qemu: terminating on signal 15 from pid 45766
vm010-001-228-006.log-2013-02-27 12:35:23.194+0000: shutting down
--
vm010-002-011-002.log:qemu: terminating on signal 15 from pid 45766
vm010-002-011-002.log-2013-02-27 12:35:21.772+0000: shutting down

Specifically here libvirt killed 4 vms just after start.
Before that occasion we just shut libvirtd off and started again (stop/start).

Will be very grateful for any ideas on this matter.
--
wbr, Igor Lukyanov


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