[libvirt-users] no connection driver available for No connection for URI xen:///

[Alex Jia]

On 03/16/2012 11:02 AM, Su Zhang wrote:
>
>
> On Thu, Mar 15, 2012 at 9:45 PM, Alex Jia <ajia at redhat.com 
> <mailto:ajia at redhat.com>> wrote:
>
>     On 03/16/2012 05:33 AM, Su Zhang wrote:
>>
>>
>>     On Thu, Mar 15, 2012 at 4:20 PM, Eric Blake <eblake at redhat.com
>>     <mailto:eblake at redhat.com>> wrote:
>>
>>         On 03/15/2012 02:57 PM, Su Zhang wrote:
>>         > Hi all,
>>         >
>>         > I am trying to use virt-install to install domU image.
>>         However, I
>>         > encountered the following issue. It seems that a connection
>>         driver is
>>         > needed for Xen.
>>         > I am new to both libvirt and Xen. Anyone have any ideas on
>>         what's wrong
>>         > with the following error ?
>>         >
>>         >
>>         >
>>         > # virt-install --connect=xen:/// -p -d
>>         > Thu, 15 Mar 2012 10:17:55 DEBUG    Launched with command line:
>>         > /usr/bin/virt-install --connect=xen:/// -p -d
>>         > Thu, 15 Mar 2012 10:17:55 DEBUG    Requesting libvirt URI
>>         xen:///
>>         > Thu, 15 Mar 2012 10:17:55 ERROR    no connection driver
>>         available for No
>>         > connection for URI xen:///
>>
>>         This probably means that your copy of libvirt.so and libvirtd
>>         was built
>>         without xen support.  What does
>>
>>         virsh --version=long
>>
>>         say?  Also, are you sure libvirtd is running?
>>
>     In addition, I want to know your libvirt.so, libvirtd, xend
>     location, for example,
>     # which libvirtd
>     # which xend
>     # locate libvirt.so
>
>     Please also make sure xend service is running:
>     # service xend status
>>
>>
>>         --
>>         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
>>
>>
>>     Eric,
>>
>>     Here is the output:
>>     # virsh --version=long
>>     Virsh command line tool of libvirt 0.9.10
>>     See web site at http://libvirt.org/
>>
>>     Compiled with support for:
>>      Hypervisors: Xen QEmu/KVM UML OpenVZ VirtualBox LXC Test
>>      Networking: Remote Daemon Network Bridging Nwfilter VirtualPort
>>      Storage: Dir Filesystem SCSI Multipath iSCSI LVM
>>      Miscellaneous: SELinux Secrets Debug
>>
>>     It seems that it does support Xen.
>     Yeah, Xen indeed appears in Hypervisors line.
>
>>
>>     I am not sure if libvirtd is running so I use the following
>>     command to start it:
>>
>>     [root at XenTester srv]# /etc/rc.d/init.d/libvirtd start
>     Right, you may also use service libvirtd start, and check it by
>     service libvirtd status or ps -ef|grep libvirtd.
>>
>>     But the same error is still there.
>>
>>     Am I using the right way to start libvirtd service? Are there any
>>     other possible reasons of this error?
>>
>>     Thanks,
>>
>>     -- 
>>     Su Zhang
>>     Ph.D Candidate
>>     Computing and Information Sciences
>>     Kansas State University
>>
>>
>>     _______________________________________________
>>     libvirt-users mailing list
>>     libvirt-users at redhat.com  <mailto:libvirt-users at redhat.com>
>>     https://www.redhat.com/mailman/listinfo/libvirt-users
>
> Alex,
>
> Here is some information:
>
> # /etc/init.d/xencommons start
> Starting xenstored...
> Setting domain 0 name...
> Starting xenconsoled...
> [root at XenTester su]# /etc/init.d/xend start
> [root at XenTester su]# which libvirtd
> /usr/local/sbin/libvirtd
> [root at XenTester su]# which xend
> /usr/sbin/xend
> [root at XenTester su]# locate libvirt.so
> /usr/lib64/libvirt.so.0
> /usr/lib64/libvirt.so.0.9.4
> /usr/local/lib/libvirt.so
> /usr/local/lib/libvirt.so.0
> /usr/local/lib/libvirt.so.0.9.10
You have 2 different libvirt versions 0.9.4 and 0.9.10, and your 0.9.10 
is put under the
/usr/local/lib directory, so I guess you haven't used ./configure with 
--prefix=/usr option
or directly use ./autogen.sh --system when you configure and compile 
libvirt.

And also please yum install strace -y if you haven't installed strace 
rpm, then run the following operation:

# strace -o strace.txt virt-install --connect=xen:/// -p

Then attach strace.txt as a attachment.

Thanks,
Alex
> [root at XenTester su]# service xend status
> [root at XenTester su]# ps -ef|grep libvirtd
> root      2242     1  0 21:52 ?        00:00:00 libvirtd --daemon
> root      3295  3112  0 21:59 pts/0    00:00:00 grep libvirtd
>
> Can you see if it is normal here?
>
> Thanks,
>
>
> -- 
> Su Zhang
> Ph.D Candidate
> Computing and Information Sciences
> Kansas State University

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