Xen : virsh error

[unixfoo]

Greetings,

When I try to use "virsh", I get the below error. ( xm list returns details
though ). I use Fedora 8 and xen.

[root@un1xf00 ~]# virsh
virsh: error: failed to connect to the hypervisor
[root@un1xf00 ~]# xm list
Name                                        ID   Mem VCPUs      State
Time(s)
Domain-0                                     0  4885     4     r-----
399430.4
webhttp10000                              11  2048     2     -b----  65141.6
webhttp10001                              18  2560     2     -b----    358.0
webhttp10002                              14  2048     2     -b----  81720.5
[root@un1xf00 ~]#

Any configuration to be done for virsh. Please help

-unixfoo
http://unixfoo.blogspot.com

[Richard W.M. Jones]

unixfoo wrote:
> Greetings,
>
> When I try to use "virsh", I get the below error. ( xm list returns details
> though ). I use Fedora 8 and xen.
>
> [root@un1xf00 ~]# virsh
> virsh: error: failed to connect to the hypervisor
> [root@un1xf00 ~]# xm list

[works]

What's the output of "virsh list --all"?  What version of libvirt & Xen?

If "virsh list --all" shows an error or no output consistently, then 
please file a bug report (http://bugzilla.redhat.com/).  It would be 
helpful if you could attach to this report the output of:

strace -o /tmp/log -s 1024 -f virsh list --all

(the /tmp/log file)

Rich.

[unixfoo]

Hi,

virsh list --all also gives me the same error.

Attached the strace log. Let me know if you find any issues. Will log
an issue with bugzilla.

thx

http://unixfoo.blogspot.com

On Nov 29, 2007 3:08 PM, Richard W.M. Jones  wrote:
> unixfoo wrote:
> > Greetings,
> >
> > When I try to use "virsh", I get the below error. ( xm list returns details
> > though ). I use Fedora 8 and xen.
> >
> > [root@un1xf00 ~]# virsh
> > virsh: error: failed to connect to the hypervisor
> > [root@un1xf00 ~]# xm list
>
> [works]
>
> What's the output of "virsh list --all"?  What version of libvirt & Xen?
>
> If "virsh list --all" shows an error or no output consistently, then
> please file a bug report (http://bugzilla.redhat.com/).  It would be
> helpful if you could attach to this report the output of:
>
> strace -o /tmp/log -s 1024 -f virsh list --all
>
> (the /tmp/log file)
>
> Rich.
>
> --
> Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
> Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
> Street, Windsor, Berkshire, SL4 1TE, United Kingdom.  Registered in
> England and Wales under Company Registration No. 03798903

[unixfoo]

Hi,

virsh list --all also gives me the same error.

Attached the strace log. Let me know if you find any issues. Will log
an issue with bugzilla.

thx

http://unixfoo.blogspot.com

On Nov 29, 2007 3:08 PM, Richard W.M. Jones  wrote:
> unixfoo wrote:
> > Greetings,
> >
> > When I try to use "virsh", I get the below error. ( xm list returns details
> > though ). I use Fedora 8 and xen.
> >
> > [root@un1xf00 ~]# virsh
> > virsh: error: failed to connect to the hypervisor
> > [root@un1xf00 ~]# xm list
>
> [works]
>
> What's the output of "virsh list --all"?  What version of libvirt & Xen?
>
> If "virsh list --all" shows an error or no output consistently, then
> please file a bug report (http://bugzilla.redhat.com/).  It would be
> helpful if you could attach to this report the output of:
>
> strace -o /tmp/log -s 1024 -f virsh list --all
>
> (the /tmp/log file)
>
> Rich.
>
> --
> Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
> Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
> Street, Windsor, Berkshire, SL4 1TE, United Kingdom.  Registered in
> England and Wales under Company Registration No. 03798903

[Aaron Metzger]

unixfoo wrote:
> Hi,
>
> virsh list --all also gives me the same error.

Is your libvirtd daemon running?

/etc/init.d/libvirtd start
> Attached the strace log. Let me know if you find any issues. Will log
> an issue with bugzilla.
>
> thx
>
> http://unixfoo.blogspot.com
>
> On Nov 29, 2007 3:08 PM, Richard W.M. Jones  wrote:
> > unixfoo wrote:
> > > Greetings,
> > >
> > > When I try to use "virsh", I get the below error. ( xm list returns details
> > > though ). I use Fedora 8 and xen.
> > >
> > > [root@un1xf00 ~]# virsh
> > > virsh: error: failed to connect to the hypervisor
> > > [root@un1xf00 ~]# xm list
> >
> > [works]
> >
> > What's the output of "virsh list --all"?  What version of libvirt & Xen?
> >
> > If "virsh list --all" shows an error or no output consistently, then
> > please file a bug report (http://bugzilla.redhat.com/).  It would be
> > helpful if you could attach to this report the output of:
> >
> > strace -o /tmp/log -s 1024 -f virsh list --all
> >
> > (the /tmp/log file)
> >
> > Rich.
> >
> > --
> > Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
> > Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
> > Street, Windsor, Berkshire, SL4 1TE, United Kingdom.  Registered in
> > England and Wales under Company Registration No. 03798903
> >
> > --
> > Fedora-xen mailing list
> > [e-mail]
> > https://www.redhat.com/mailman/listinfo/fedora-xen

[unixfoo]

My machine doesnt even have the /etc/init.d/libvirtd . May be im missing
something. Let me chk the rpm and get back.

Thanks for the help.
http://unixfoo.blogspot.com

On Nov 30, 2007 9:53 AM, Aaron Metzger  wrote:
> unixfoo wrote:
> > Hi,
> >
> > virsh list --all also gives me the same error.
>
> Is your libvirtd daemon running?
>
> /etc/init.d/libvirtd start
> > Attached the strace log. Let me know if you find any issues. Will log
> > an issue with bugzilla.
> >
> > thx
> >
> > http://unixfoo.blogspot.com
> >
> > On Nov 29, 2007 3:08 PM, Richard W.M. Jones  wrote:
> > > unixfoo wrote:
> > > > Greetings,
> > > >
> > > > When I try to use "virsh", I get the below error. ( xm list returns
>
> details
> > > > though ). I use Fedora 8 and xen.
> > > >
> > > > [root@un1xf00 ~]# virsh
> > > > virsh: error: failed to connect to the hypervisor
> > > > [root@un1xf00 ~]# xm list
> > >
> > > [works]
> > >
> > > What's the output of "virsh list --all"?  What version of libvirt &
>
> Xen?
> > > If "virsh list --all" shows an error or no output consistently, then
> > > please file a bug report (http://bugzilla.redhat.com/).  It would be
> > > helpful if you could attach to this report the output of:
> > >
> > > strace -o /tmp/log -s 1024 -f virsh list --all
> > >
> > > (the /tmp/log file)
> > >
> > > Rich.
> > >
> > > --
> > > Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/http://et.redhat.com/%7Erjones/
> > > Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
> > > Street, Windsor, Berkshire, SL4 1TE, United Kingdom.  Registered in
> > > England and Wales under Company Registration No. 03798903
> > > --
> > > Fedora-xen mailing list
> > > [e-mail]
> > > https://www.redhat.com/mailman/listinfo/fedora-xen
>
> --
> Fedora-xen mailing list
> [e-mail]
> https://www.redhat.com/mailman/listinfo/fedora-xen

[Markus Armbruster]

Quick sanity check: you are running the xen kernel, aren't you?

[unixfoo]

Yeah Of course , Im running xen kernel :) .  But I dont see a
/etc/init.d/libvirtd and virsh doesnt work.

[root@unixfoo1~]# rpm -qa | grep virt
libvirt-0.1.8-15.el5.0.1
libvirt-python-0.1.8-15.el5.0.1
python-virtinst-0.99.0-2.el5
[root@unixfoo1 ~]# uname -a
Linux unixfoo1 2.6.18-8.1.6.0.6.el5xen #1 SMP Mon Aug 6 18:55:57 EDT 2007
x86_64 x86_64 x86_64 GNU/Linux
[root@unixfoo1 ~]# xm info
host                   : unixfoo1
release                : 2.6.18-8.1.6.0.6.el5xen
version                : #1 SMP Mon Aug 6 18:55:57 EDT 2007
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
sockets_per_node       : 2
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 2327
hw_caps                :
bfebfbff:20100800:00000000:00000140:0004e3bd:00000000:00000001
total_memory           : 16383
free_memory            : 512
xen_major              : 3
xen_minor              : 0
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)
cc_compile_by          : mockbuild
cc_compile_domain      : (none)
cc_compile_date        : Mon Aug  6 18:53:29 EDT 2007
xend_config_format     : 4
[root@unixfoo1 ~]# virsh
virsh: error: failed to connect to the hypervisor
[root@unixfoo1 ~]#

On Dec 3, 2007 3:20 PM, Markus Armbruster  wrote:
> Quick sanity check: you are running the xen kernel, aren't you?

[Daniel Veillard]

On Tue, Dec 04, 2007 at 09:01:25AM +0530, unixfoo wrote:
> Yeah  Of  course  ,  Im  running  xen  kernel  :)  .  But I dont see a
>    /etc/init.d/libvirtd and virsh doesnt work.
>    [root@unixfoo1~]# rpm -qa | grep virt
>    libvirt-0.1.8-15.el5.0.1
>    libvirt-python-0.1.8-15.el5.0.1
>    python-virtinst-0.99.0-2.el5

You stated previously "I use Fedora 8" and now you have RHEL 5.0 bits
there. It gets harder to help you if you don't tell us exactly what is
going on.

The daemon is definitely present in the most recent packages for RHEL,
I suggest you update your installation if possible or at least make sure
everything is pristine and correwctly installed, that will certainly help:

[root@test2 ~]# rpm -qf /etc/init.d/libvirtd 
libvirt-0.2.3-9.el5

Daniel

[Richard W.M. Jones]

unixfoo wrote:
> Yeah Of course , Im running xen kernel :) .  But I dont see a
> /etc/init.d/libvirtd and virsh doesnt work.
>
> [root@unixfoo1~]# rpm -qa | grep virt
> libvirt-0.1.8-15.el5.0.1
> libvirt-python-0.1.8-15.el5.0.1

You won't find libvirtd in this ancient (pre-remote) version of 
libvirt[1].  I think you need to check you're really running F8 as you 
said, and not RHEL 5, CentOS or similar.

Rich.

[1] http://libvirt.org/hvsupport.html