Re: [libvirt] strange stale qemu processes after domain shutdown
2015-10-23 11:57 GMT+03:00 Vasiliy Tolstov <v.tolstov(a)selfip.ru>:
2015-10-23 11:37 GMT+03:00 Michal Privoznik
<mprivozn(a)redhat.com>:
> That does not matter. We keep state XML for all running domains,
> regardless if they are persistent or transient. But since the daemon
> does not restart, I suspect we have a bug somewhere.
> BTW: you can check if the state XML for domain still exists. We pass
> -name $domname to qemu, and the state XML should then be:
>
> /var/run/libvirt/qemu/$domname.xml
>
> Also, there is PID of the qemu process - can you check if they match?
Xml is absent, this is not strange, because libvirt log says, that
domain is shutdown. So i think libvirt cleanup xml and pid files for
this domains
Now i'm have the same issue. I'm do live migration on another node,
qemu log says that domain receive 15 signal and shutdown. But as i see
in process list:
root 29561 0.1 0.2 1599628 743796 ? Sl Aug13 227:33
qemu-system-x86_64 -enable-kvm -name 29953 -S -machine
pc-i440fx-1.7,accel=kvm,usb=off -m 1024 -realtime mlock=off -smp
1,sockets=1,cores=1,threads=1 -uuid
7ca8e593-29f7-6389-9b35-000071cc3e1e -no-user-config -nodefaults
-chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/29953.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc
-no-shutdown -boot strict=on -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
virtio-scsi-pci,id=scsi0,num_queues=1,bus=pci.0,addr=0x4 -device
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive
file=/dev/vg3/29953,if=none,id=drive-scsi0-0-0-0,format=raw,cache=none,discard=unmap,aio=native,iops=5000
-device
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1
-drive if=none,id=drive-scsi0-0-1-0,readonly=on,format=raw -device
scsi-cd,bus=scsi0.0,channel=0,scsi-id=1,lun=0,drive=drive-scsi0-0-1-0,id=scsi0-0-1-0
-netdev tap,fd=353,id=hostnet0,vhost=on,vhostfd=354 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:00:40:25,bus=pci.0,addr=0x3,rombar=0
-chardev pty,id=charserial0 -device
isa-serial,chardev=charserial0,id=serial0 -chardev
socket,id=charchannel0,path=/var/lib/libvirt/qemu/29953.agent,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0
-device usb-mouse,id=input0 -device usb-kbd,id=input1 -vnc
[::]:23,password -device VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -object
rng-random,id=objrng0,filename=/dev/random -device
virtio-rng-pci,rng=objrng0,id=rng0,max-bytes=1024,period=2000,bus=pci.0,addr=0x7
-msg timestamp=on
In strace qemu poll some fds
lsof output:
https://gist.githubusercontent.com/vtolstov/7ba49e8193c4ac9e9da0/raw/f077...
virsh version
Compiled against library: libvirt 1.2.16
Using library: libvirt 1.2.16
Using API: QEMU 1.2.16
Running hypervisor: QEMU 2.3.0
uname -r
3.19-3-amd64
what can i do next to debug this issue? Also as i say before - libvirt
thinks that domain dies successful and cleanup xml and pid files.
--
Vasiliy Tolstov,
e-mail: v.tolstov(a)selfip.ru