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

[Ubaidul Khan]

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?
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> Date: Tue, 25 Mar 2008 15:45:15 +0000
> From: berrange at redhat.com
> To: ukhanlists at hotmail.com
> CC: xen-users at lists.xensource.com; fedora-xen at 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 at saleen xen]# /etc/init.d/xend start
>>     Starting xend:                                             [  OK  ]
>> 
>>     [root at 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 at 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.
> -- 
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