[Xen-devel] xend internal error on 4.0.0-rc6-pre

["Nadolski, Ed" <Ed.Nadolski@xxxxxxx>]

With Xen 4.0.0-rc6-pre on Fedora 12, I see the following error when trying to 
start xend:

# python -V
Python 2.6.2
# xend start
ERROR Internal error: Could not obtain handle on privileged command interface 
(2 = No such file or directory)
Traceback (most recent call last):
  File "/usr/sbin/xend", line 36, in <module>
    from xen.xend.server import SrvDaemon
  File "/usr/lib64/python2.6/site-packages/xen/xend/server/SrvDaemon.py", line 
26, in <module>
    import relocate
  File "/usr/lib64/python2.6/site-packages/xen/xend/server/relocate.py", line 
28, in <module>
    from xen.xend import XendDomain
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomain.py", line 36, in 
<module>
    from xen.xend import XendOptions, XendCheckpoint, XendDomainInfo
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendCheckpoint.py", line 
20, in <module>
    from xen.xend import balloon, sxp, image
  File "/usr/lib64/python2.6/site-packages/xen/xend/image.py", line 46, in 
<module>
    xc = xen.lowlevel.xc.xc()
xen.lowlevel.xc.Error: (1, 'Internal error', 'Could not obtain handle on 
privileged command interface (2 = No such file or directory
)')

This looks very similar to this existing, open bug:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1436

It appears this bug was opened 2009-03-21 but the status still shows as 'NEW'.  
Does anyone have more info on this?   Is there a workaround?

Thanks in advance,
Ed

PS, here is my Xen/Linux info:

(XEN) Xen version 4.0.0-rc6-pre (root@) (gcc version 4.4.2 20091027 (Red Hat 
4.4.2-7) (GCC) ) Thu Mar  4 21:32:45 MST 2010
(XEN) Latest ChangeSet: Wed Mar 03 17:41:58 2010 +0000 20997:b8d2a4134a68
(XEN) Console output is synchronous.
(XEN) Command line: acpi_skip_timer_override loglvl=all guest_loglvl=all 
sync_console console_to_ring com1=115200,8n1 console=com1

[    0.000000] Linux version 2.6.31.6 (root@truckee) (gcc version 4.4.2 
20091027 (Red Hat 4.4.2-7) (GCC) ) #1 SMP Thu Mar 4 20:59:13 MST 2010
[    0.000000] Command line: ro root=UUID=5d34160d-d728-4e6e-b66d-9e1632aa6dd5  
LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us 
console=hvc0 earlyprintk=xen acpi_skip_timer_override



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