Red Hat Bugzilla – Bug 890297
libvirtd.log will get an I/O error when close a virt-viewer guest terminal
Last modified: 2013-11-21 03:06:09 EST
Description of problem: libvirtd.log will get an I/O error when close a virt-viewer guest terminal Version-Release number of selected component (if applicable): spice-server-0.12.0-8.el6.x86_64 libvirt-0.10.2-13.el6.x86_64 qemu-kvm-rhev-0.12.1.2-2.344.el6.x86_64 virt-viewer-0.5.2-18.el6.x86_64 virt-manager-0.9.0-18.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. # cat nfs.xml <domain type='kvm'> <name>nfs</name> <uuid>b067f6aa-2122-3eb8-bcd0-c83cf55ae8d4</uuid> <memory unit='KiB'>1048576</memory> <currentMemory unit='KiB'>1048576</currentMemory> <vcpu placement='static'>4</vcpu> <os> <type arch='x86_64' machine='rhel6.4.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <cpu> <topology sockets='2' cores='1' threads='2'/> </cpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/var/lib/libvirt/images/r63.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </controller> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='fdc' index='0'/> <interface type='network'> <mac address='52:54:00:30:7a:ac'/> <source network='default'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'/> <graphics type='spice' autoport='yes'/> <sound model='ich6'> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='qxl' vram='8192' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </memballoon> </devices> </domain> 2.# virsh define nfs.xml 3.# virt-viewer nfs 4.Close the terminal of virt-viewer and check libvirtd.log will get: 2012-12-26 07:49:10.483+0000: 9556: error : virNetSocketReadWire:1184 : End of file while reading data: Input/output error Actual results: As steps Expected results: Should not get that error Additional info:
Libvirtd is just saying it got EOF on a socket. The only thing that could perhaps be considered to be a bug is that libvirtd is a bit too laud (warning could be enough) and reporting the EOF as EIO is a bit confusing too.
IMO this is a supportability issue as I think these errors might be confusing to users.
This error is caused by virt-viewer not cleaning up the callbacks and events when disconnecting. Upstream patch: https://www.redhat.com/archives/virt-tools-list/2013-July/msg00136.html
I can reproduce this issue with: virt-viewer-0.5.6-2.el6.x86_64 Tested with: virt-viewer-0.5.6-6.el6.x86_64 After close virt-viewer,there is no such Input/output error info in libvirtd.log.So move the bug to VERIFIED.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2013-1578.html