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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.
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