[Xen-bugs] [Bug 1755] New: Cannot launch xend

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1755

           Summary: Cannot launch xend
           Product: Xen
           Version: unspecified
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: cborcke@xxxxxxx


Hi,

I'm having troubles to launch the xen deamon on my Xen box since last reboot:

disco-mobile ~ # tail /var/log/xen/xend.log
[2011-03-21 23:02:32 2665] INFO (SrvDaemon:332) Xend Daemon started
[2011-03-21 23:02:32 2665] ERROR (SrvDaemon:349) Exception starting xend ((38,
'Function not implemented'))
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/xen/xend/server/SrvDaemon.py", line
335, in run
    xinfo = xc.xeninfo()
Error: (38, 'Function not implemented')
[2011-03-21 23:02:32 2664] INFO (SrvDaemon:220) Xend exited with status 1.

disco-mobile ~ # tail /var/log/xen/xend-debug.log
Xend started at Mon Mar 21 23:02:32 2011.
Exception starting xend: (38, 'Function not implemented')


disco-mobile ~ # ls -lh /dev/xen/
total 0
crw-rw---- 1 root root 10, 62 Mar 21 10:34 evtchn

disco-mobile ~ # tail /var/log/messages
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:790: blktapctrl:
v1.0.0
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:792: Found driver:
[raw image (aio)]
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:792: Found driver:
[raw image (sync)]
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:792: Found driver:
[vmware image (vmdk)]
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:792: Found driver:
[ramdisk image (ram)]
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:792: Found driver:
[qcow disk (qcow)]
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:792: Found driver:
[qcow2 disk (qcow2)]
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl_linux.c:86: blktap0
open failed
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:859: couldn't open
blktap interface
Mar 21 23:02:32 disco-mobile BLKTAPCTRL[2657]: blktapctrl.c:922: Unable to
start blktapctrl

disco-mobile ~ # uname -a
Linux disco-mobile 2.6.32-xen-r1 #1 SMP Fri Apr 30 15:45:49 CEST 2010 i686
Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz GenuineIntel GNU/Linux

Firstable I don't have a clue why I cannot restart this deamon: My xenbox used
to work like a charm. I'm pretty sure that some stuff are missing on /dev/xen
but i don't have a clue about populate this directory. I tried ./MAKEDEV on
/dev/ but it wasn't successful. 

Method of installation: Compilation and installation from gentoo ebuild.
Version of Xen: 4.0.1
O.S. : Gentoo 10.1


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