Re: [libvirt] xen:/// vs. xen://FQDN/ vs xen+unix:/// discrepancy
On Thu, Jul 22, 2010 at 12:44:53PM +0200, Philipp Hahn wrote:
Hello,
I regularly observe the problem, that depending on the libvirt-URL I get
different information:
root@xen4# virsh -c xen://xen4.domain.name/ list
Id Name State
----------------------------------
This will go to the libvirtd daemon, which will in turn open
a 'xen:///' connection
root@xen4# virsh -c xen:/// list
Id Name State
----------------------------------
0 Domain-0 running
1 dos4 idle
This is uses a combination of talking to the hypervisor, xenstore
and xend.
root@xen4# virsh -c xen+unix:/// list
Id Name State
----------------------------------
This goes to the libvirtd daemon, using UNIX sockets, which
will in turn open a 'xen:///' connection.
Assuming the libvirtd daemon you've connected to is on the
same host as virsh process, then since they all ultimately
end up using 'xen:///', the data should be identical in
all cases.
To verify that libvirtd is actually openening the same drivers as virsh
you can edit /etc/libvirt/libvirtd.conf and set
log_filters="1:libvirt 1:xen"
log_outputs="1:file:/var/log/libvirt/libvirtd.log"
and restart the libvirtd daemon. Then try the 'xen+unix:///' URI again
After that use
export LIBVIRT_LOG_FILTERS="1:libvirt 1:xen"
export LIBVIRT_LOG_OUTPUTS="1:file:/var/log/libvirt/libvirtd.log"
and run 'virsh -c xen:///'. It should be possible to then compare that
both sets of logs show same Xen drivers
Daniel
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