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RE: [Fedora-xen] RHEL5 - Xend will not start after software upgrade



FYI, yum on my machine was configured with RHN repositories.  Is yum supposed to handle these dependencies in way so people dont end up in the same situation I am in?
----------------------------------------
> Date: Tue, 25 Mar 2008 15:45:15 +0000
> From: berrange redhat com
> To: ukhanlists hotmail com
> CC: xen-users lists xensource com; fedora-xen redhat com
> Subject: Re: [Fedora-xen] RHEL5 - Xend will not start after software upgrade
> 
> On Tue, Mar 25, 2008 at 11:41:27AM -0400, Ubaidul Khan wrote:
>> 
>> Hello,
>> 
>> Recently I ran yum update on a RHEL5 x86_64 machine and as part of the update, the following packages were installed:
>> 
>>     Updated:    xen-libs-3.0.3-41.el5.x86_64
>>     Updated:    xen-libs-3.0.3-41.el5.i386
>>     Installed:  kernel-xen-2.6.18-53.1.14.el5.x86_64
>>     Updated:    xen-3.0.3-41.el5.x86_64
>> 
>> After the update, I rebooted the machine.  Now, I cannot get xend to start:
>> 
>>     [root saleen xen]# /etc/init.d/xend start
>>     Starting xend:                                             [  OK  ]
>> 
>>     [root saleen xen]# ps -ef | grep xend
>>     root      4080     1     0   11:27    ?          00:00:00 python /usr/sbin/xend start
>>     root      4081     4080  0   11:27    ?          00:00:00 python /usr/sbin/xend start
>>     root      4264     3109  0   11:45    pts/1      00:00:00 grep xend
>> 
>> [root saleen log]# tail -f /var/log/xen/xend.log
>>     self.obj = klassobj()
>>   File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvDomainDir.py", line 39, in __init__
>>     self.xd = XendDomain.instance()
>>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 655, in instance
>>     inst.init()
>>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 76, in init
>>     self._add_domain(
>>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomain.py", line 139, in xen_domains
>>     domlist = xc.domain_getinfo()
>> Error: (13, 'Permission denied')
> 
> That means you have a mis-matched version of the kernel vs userspace.
> 
> Make sure you have applied all RHEL-5.1 updates, and have rebooted into
> the new kernel. The new userspace won't work with old kernel & vica-verca.
> 
> Regards,
> Daniel.
> -- 
> |: Red Hat, Engineering, Boston   -o-   http://people.redhat.com/berrange/ :|
> |: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
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