Generally if you use virsh to restart the virtual machine,it seems to be able to use some time before shutoff again。
$ date Thu Dec 6 17:04:41 CST 2012 $ virsh start instance-0000006e Domain instance-0000006e started $ virsh list Id Name State ---------------------------------- 158 instance-0000006e running /var/log/libvirt/qemu$ sudo tail -f instance-0000006e.log 2012-12-03 06:14:13.488+0000: shutting down qemu: terminating on signal 15 from pid 1957 2012-12-03 06:14:59.819+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.0 -cpu core2duo,+lahf_lm,+aes,+popcnt,+sse4.2,+sse4.1,+cx16,-monitor,-vme -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name instance-0000006e -uuid d7798df8-e225-4178-9d0b-f6691d78ce18 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-0000006e.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -no-kvm-pit-reinjection -no-shutdown -drive file=/data0/instances/instance-0000006e/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=25,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:17:ca:dd,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/data0/instances/instance-0000006e/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 0.0.0.0:2 -k en-us -vga cirrus -incoming fd:23 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 char device redirected to /dev/pts/27 qemu: terminating on signal 15 from pid 1957 2012-12-04 06:54:27.150+0000: shutting down 2012-12-06 09:02:46.343+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.0 -cpu core2duo,+lahf_lm,+aes,+popcnt,+sse4.2,+sse4.1,+cx16,-monitor,-vme -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name instance-0000006e -uuid d7798df8-e225-4178-9d0b-f6691d78ce18 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-0000006e.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -no-kvm-pit-reinjection -no-shutdown -drive file=/data0/instances/instance-0000006e/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=23,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:17:ca:dd,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/data0/instances/instance-0000006e/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 0.0.0.0:2 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 char device redirected to /dev/pts/30 We can see this two log: ... 2012-12-03 06:14:59.819+0000: starting up ... 2012-12-04 06:54:27.150+0000: shutting down The vm shutoff after running one day. 2012/12/6 Veera Reddy <veerare...@gmail.com> > > > On Thu, Dec 6, 2012 at 8:29 AM, pyw <pengyu...@gmail.com> wrote: > >> instance-00000040 shut off > > > > > Hi, > > Try to start vm with virsh command > > " virsh start instance-00000040" > > With this we can see what is actual problem > > Regards, > Veera. >
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