Xen project Mailing List

2010/10/28 Sriram Murali <msriram@xxxxxxxxxx>

first of all make sure that you are choosing option from the boot menu.

Second, find the file site_customize.py. You can look for it using the command 'find / -name "sitecustomize.py" ' as root.(I do not have access to my machine right now, sorry!) It is somewhere in under the /etc/python... path. In that path the add the two import site lines as shown below:

# install the apport exception handler if available
import site
site.addsitedir("/usr/lib/python2.6/dist-packages")
import site
site.addsitedir("/usr/lib/python2.6/site-packages")
try:
import apport_python_hook
except ImportError:
pass
else:
apport_python_hook.install()

Now xend should work. This is just a hack, maybe some one else has a better solution...

I've added these lines into /etc/python2.6/sitecustomize.py and tried to restart xend. Nothing changed. I am trying to recompile dom0 (pvops) with the 4.0.0 version (xen/master branch). Maybe I have some version mismatch between hypervisor and dom0.

Thank you !

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of David Cemin
Sent: October-28-10 7:57 AM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] xend does not start
Hello,

I've downloaded the xen 4.0.1 version as it is explained here:

http://wiki.xensource.com/xenwiki/Xen4.0

So, I've made a clone from repository, with the following command:
 
hg clone -r RELEASE-4.0.1 http://xenbits.xen.org/xen-4.0-testing.hg
And finally I've built xen, tools and stubdom.

I was looking for a paravirtualized domain, and so I follow the instructions from here:
http://wiki.xensource.com/xenwiki/XenParavirtOps

So, I am able to boot dom0 successfully, but apparently xend its not starting.

A few things that I have noticed:

1) lsmod does not list evtchn and neither gntdev, and they are not compiled as a Module. I have tried also to insert them with lsmod, and of course, I dont have them.

2) The nodes appear in both /proc/misc and /dev/xen, and the numbers are correct

% cat /proc/misc

52 freefall
224 tpm0
53 network_throughput
54 network_latency
55 cpu_dma_latency
56 device-mapper
  1 psaux
200 tun
57 pktcdvd

228 hpet
58 blktap-control
59 xen/gntdev
60 xen/evtchn
229 fuse

61 ecryptfs
231 snapshot
227 mcelog
62 rfkill
63 vga_arbiter

% ll /dev/xen
total 0
crw-rw---- 1 root root 10, 60 2010-10-27 17:32 evtchn
crw-rw---- 1 root root 10, 59 2010-10-27 17:32 gntdev

3) I am really running dom)
% cat /proc/xen/capabilities
control_d

4) /var/log/xen shows the following errors:

xend.log

[2010-10-27 17:32:31 1307] INFO (SrvDaemon:331) Xend Daemon started
[2010-10-27 17:32:31 1307] INFO (SrvDaemon:335) Xend changeset: Wed Aug 25 09:22:42 2010 +0100 21324:b536ebfba183.

[2010-10-27 17:32:31 1307] ERROR (SrvDaemon:347) Exception starting xend ((13, 'Permission denied'))
Traceback (most recent call last):

  File "/usr/lib/python2.6/dist-packages/xen/xend/server/SrvDaemon.py", line 339, in run
   servers = SrvServer.create()
  File "/usr/lib/python2.6/dist-packages/xen/xend/server/SrvServer.py", line 251, in create
   root.putChild('xend', SrvRoot())
  File "/usr/lib/python2.6/dist-packages/xen/xend/server/SrvRoot.py", line 40, in __init__

   self.get(name)
  File "/usr/lib/python2.6/dist-packages/xen/web/SrvDir.py", line 82, in get
   val = val.getobj()

  File "/usr/lib/python2.6/dist-packages/xen/web/SrvDir.py", line 52, in getobj
   self.obj = klassobj()
  File "/usr/lib/python2.6/dist-packages/xen/xend/server/SrvNode.py", line 30, in __init__

   self.xn = XendNode.instance()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 752, in instance
   inst = XendNode()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 87, in __init__
   self.other_config["xen_pagesize"] = self.xeninfo_dict()["xen_pagesize"]

  File "/usr/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 741, in xeninfo_dict
   return dict(self.xeninfo())
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 685, in xeninfo
   info['xen_scheduler'] = self.xenschedinfo()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 675, in xenschedinfo
   sched_id = self.xc.sched_id_get()
Error: (13, 'Permission denied')

xend-debug.log

Xend started at Wed Oct 27 17:32:31 2010.

domctl operation failed -- need to rebuild the user-space tool set?
sysctl operation failed -- need to rebuild the user-space tool set?
Exception starting xend: (13, 'Permission denied')
Exception in thread Thread-2:
Traceback (most recent call last):
  File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner
   self.run()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendMonitor.py", line 230, in run

   for domid, cputimes in self._get_cpu_stats().items():
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendMonitor.py", line 208, in _get_cpu_stats

   for domain in self.xc.domain_getinfo():
Error: (13, 'Permission denied')

Does anyone have any Idea of how can I start xend correctly ?

Thank you!

--
David Cemin

Re: [Xen-users] xend does not start