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On a Trusty KVM host one of the guest VMs shut down without any user
interaction. The system is running:
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.5 LTS"
$ dpkg -l libvirt0 qemu-kvm qemu-system-common qemu-system-x86
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version
Architecture Description
+++-============================================================-===================================-===================================-==============================================================================================================================
ii libvirt0
1.2.2-0ubuntu13.1.17 amd64 library
for interfacing with different virtualization systems
ii qemu-kvm
2.0.0+dfsg-2ubuntu1.27 amd64 QEMU
Full virtualization
ii qemu-system-common
2.0.0+dfsg-2ubuntu1.27 amd64 QEMU
full system emulation binaries (common files)
ii qemu-system-x86
2.0.0+dfsg-2ubuntu1.27 amd64 QEMU
full system emulation binaries (x86)
In the VMs log in /var/lib/libvirt/qemu/hostname we see:
2016-11-17 09:18:42.603+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 -name hostname,process=qemu:hostname -S
-machine pc-i440fx-trusty,accel=kvm,usb=off -m 12697 -realtime mlock=off -smp
4,sockets=4,cores=1,threads=1 -uuid 51766564-ed8e-41aa-91b5-574220af4ac3
-no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/hostname.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 -drive
file=/dev/disk1/hostname,if=none,id=drive-virtio-disk0,format=raw -device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-drive
file=/dev/disk2/hostname_mnt_data,if=none,id=drive-virtio-disk1,format=raw
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1
-drive file=/dev/disk1/hostname_tmp,if=none,id=drive-virtio-disk2,format=raw
-device v
irtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk2,id=virtio-disk2
-netdev tap,fd=24,id=hostnet0,vhost=on,vhostfd=30 -device
virtio-net-pci,tx=bh,netdev=hostnet0,id=net0,mac=52:54:00:45:e7:d9,bus=pci.0,addr=0x6
-netdev tap,fd=31,id=hostnet1,vhost=on,vhostfd=32 -device
virtio-net-pci,tx=bh,netdev=hostnet1,id=net1,mac=52:54:00:f6:6c:77,bus=pci.0,addr=0x7
-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0
-device usb-tablet,id=input0 -vnc 0.0.0.0:5 -device
VGA,id=video0,bus=pci.0,addr=0x2 -device AC97,id=sound0,bus=pci.0,addr=0x3
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x9
char device redirected to /dev/pts/6 (label charserial0)
qemu-system-x86_64: /build/qemu-PVxDqC/qemu-2.0.0+dfsg/block.c:3491:
bdrv_error_action: Assertion `error >= 0' failed.
2016-12-22 09:49:49.392+0000: shutting down
In /var/lib/libvirt/libvirtd.log we see:
2016-12-22 09:49:49.298+0000: 6946: error : qemuMonitorIO:656 : internal
error: End of file from monitor
We investigated to see if this is a known issue and came across a bug
report for Fedora (https://bugzilla.redhat.com/show_bug.cgi?id=1147398),
but nothing references changes upstream that fix this.
The guest OS is Ubuntu Precise (12.04.5) running kernel linux-
image-3.2.0-101-virtual 3.2.0-101.141. There wasn't any significant load
(CPU or IO) on the guest at the time that it shut down and there wasn't
any appreciable disk IO on the KVM host either. The disks for the guest
are on the KVM host box.
** Affects: qemu (Ubuntu)
Importance: Undecided
Status: New
--
VM shuts down due to error in qemu block.c
https://bugs.launchpad.net/bugs/1652011
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