[libvirt-users] Libvirt Error guest wont start

Shawn Furrow sfurrow at vt.edu
Wed Oct 10 13:52:02 UTC 2012

Hi all,

I have been using Libvirt for several months now and I have only had
minimal problems. I had a particular setup and was starting up multiple
guests just fine. However, with seemingly no changes I now get the
following error when trying to start a guest:

virsh start guest0
error: Failed to start domain guest0
error: internal error Process exited while reading console log output:
Supported machines are:
pc         Standard PC (alias of pc-0.12)
pc-0.12    Standard PC (default)
pc-0.11    Standard PC, qemu 0.11
pc-0.10    Standard PC, qemu 0.10
isapc      ISA-only PC

Apparently, the machine argument settings were changed in recent versions
of Libvirt. Or at least that is what it seems. My guest's OS settings were:

    <type arch='x86_64' machine='pc-1.1'>hvm</type>
    <boot dev='hd'/>

After getting this error I tried setting the machine argument to one of the
"supported" ones. Then I get this error:

virsh start guest0
error: Failed to start domain guest0
error: Unable to read from monitor: Connection reset by peer

Anyone have any ideas as to why this happened all of a sudden? I was not
having any problems before.


Virginia Tech
Bradley Department of Electrical and Computer Engineering
B.S. Electrical Engineering
B.S. Computer Engineering
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