[libvirt-users] qemu-monitor-command

[Alex Jia]

On 03/22/2012 05:40 AM, Shawn Davis wrote:
>
>
> On Wed, Mar 21, 2012 at 4:03 PM, Eric Blake <eblake at redhat.com 
> <mailto:eblake at redhat.com>> wrote:
>
>     On 03/21/2012 02:58 PM, Shawn Davis wrote:
>
>     >> Older libvirt had a bug where it wouldn't parse qemu 1.0
>     version (the
>     >> change from 3 digits to 2 confused the older libvirt).  If
>     you're going
>     >> to go with self-built qemu, you might also want to try self-built
>     >> libvirt 0.9.10.
>     >>
>     >> --
>     >> Eric Blake eblake at redhat.com <mailto:eblake at redhat.com>
>     +1-919-301-3266 <tel:%2B1-919-301-3266>
>     >> Libvirt virtualization library http://libvirt.org
>     >>
>     >
>     > I installed libvirt 0.9.10 from source and now virsh is not
>     finding the
>     > following:
>     >
>     > testa at testaT4:~$ virsh list
>     > virsh: /usr/lib/libvirt-qemu.so.0: version `LIBVIRT_QEMU_0.9.4'
>     not found
>     > (required by virsh)
>
>     Ouch - you've now got version mismatch, where you didn't completely
>     uninstall the distro version, and your self-built version is installed
>     in locations that pick up the distro version.  Did you use the right
>     configure flags?
>
>     > I can't install qemu 1.0 and libvirt 0.9.10 through apt right?
>
>     Ah, apt - are you on debian or ubuntu?  I don't know as much about the
>     versions that those distros are using (I'm personally using Fedora 16,
>     along with the fedora-virt-preview repo, which gives 0.9.10
>     pre-built).
>
>     > I assume I
>     > had to get them from source.  Anyways, please let me know how I
>     can get
>     > virsh to see that I have 0.9.10.  Once I get this working and
>     can run that
>     > monitor command I will be in good shape.
>
>     There might be someone already shipping a pre-built 0.9.10 apt, but I
>     wouldn't know where to tell you to look, so building from source
>     is the
>     other alternative.  If you build from libvirt.git, you can use
>     './autobuild.sh --system' to help set the ./configure options that
>     match
>     with the typical installation directories for at least Fedora, but
>     again, I don't know how that fares with the debian installation layout
>     (and patches are welcome to autobuild.sh for anyone that wants to
>     use it
>     on a debian layout).
>
>     --
>     Eric Blake eblake at redhat.com <mailto:eblake at redhat.com>
>     +1-919-301-3266 <tel:%2B1-919-301-3266>
>     Libvirt virtualization library http://libvirt.org
>
>
>
> Yeah, I am using Ubuntu 11.10.  I was able to uninstall the old 
> libvirt and virsh works again but still getting this when trying to 
> start the vm:
>
> testa at testaT4:~$ virsh list
>  Id    Name                           State
> ----------------------------------------------------
>
> testa at testaT4:~$ virsh version
> Compiled against library: libvir 0.9.10
> Using library: libvir 0.9.10
> Using API: QEMU 0.9.10
> error: failed to get the hypervisor version
> error: internal error Cannot find suitable emulator for x86_64
>
> testa at testaT4:~$ virsh -c qemu:///system start Shawn
> error: Failed to connect socket to 
> '/usr/local/var/run/libvirt/libvirt-sock': No such file or directory

I guess you're using a old virsh with new libvirt, you may check your 
virsh command location,
if `which virsh` says '/usr/bin/virsh' and `which libvirtd` says 
/usr/sbin/libvirtd, and socket is
/var/run/libvirt/libvirt-sock not above socket path, it's right.

It probably your virsh command path is /usr/local/bin/virsh, and your 
socket path is
/var/run/libvirt/libvirt-sock now, if so, you may explicitly specify 
/usr/bin/virsh or clean up
your dirty environment then directly run virsh instead of a absolute path.

Good Luck!
Alex
> error: failed to connect to the hypervisor
> testa at testaT4:~$
>
> Thanks again for helping me out!
>
>
>
>
>
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