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Thanks for the responses !

@Mark

xenfs is not mounted. Here is the output for the mount command:
-------------
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type tmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
/dev/sdb1 on /media/08AF-8FE8 type vfat (rw,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,flush)
------------------------------

I did a modprobe on xenfs but I cannot mount it yet. Could you please give me the correct command line arguments for doing so. Here are my outputs:
------------------------

root@XenOpen:~# modprobe xenfs
root@XenOpen:~# mount xenfs
mount: can't find xenfs in /etc/fstab or /etc/mtab
-----------------------------------------------------------
Thanks a lot for your advice. Really appreciate it!

@Borris:

There is no "xen" directory in /dev....Here is what I have:

---------------

root@XenOpen:~# ls -l /dev/xen
ls: cannot access /dev/xen: No such file or directory
root@XenOpen:~# ls /dev
adsp                null        snapshot tty41    vcs1   vcs5    vcsa30
agpgart             nvram       snd       tty42    vcs10 vcs50   vcsa31
audio               oldmem      sndstat   tty43    vcs11 vcs51   vcsa32
block               parport0    sr0       tty44    vcs12 vcs52   vcsa33
bsg                 port        stderr    tty45    vcs13 vcs53   vcsa34
bus                 ppp         stdin     tty46    vcs14 vcs54   vcsa35
cdrom               ptmx        stdout    tty47    vcs15 vcs55   vcsa36
cdrw                pts         tty       tty48    vcs16 vcs56   vcsa37
char                ram         tty0      tty49    vcs17 vcs57   vcsa38
console             ram0        tty1      tty5     vcs18 vcs58   vcsa39
core                ram1        tty10     tty50    vcs19 vcs59   vcsa4
cpu                 ram10       tty11     tty51    vcs2   vcs6    vcsa40
cpu_dma_latency     ram11       tty12     tty52    vcs20 vcs60   vcsa41
disk                ram12       tty13     tty53    vcs21 vcs61   vcsa42
dri                 ram13       tty14     tty54    vcs22 vcs62   vcsa43
dsp                 ram14       tty15     tty55    vcs23 vcs63   vcsa44
dvd                 ram15       tty16     tty56    vcs24 vcs7    vcsa45
dvdrw               ram16       tty17     tty57    vcs25 vcs8    vcsa46
fb0                 ram2        tty18     tty58    vcs26 vcs9    vcsa47
fd                  ram3        tty19     tty59    vcs27 vcsa    vcsa48
full                ram4        tty2      tty6     vcs28 vcsa0   vcsa49
hidraw0             ram5        tty20     tty60    vcs29 vcsa1   vcsa5
hidraw1             ram6        tty21     tty61    vcs3   vcsa10 vcsa50
hpet                ram7        tty22     tty62    vcs30 vcsa11 vcsa51
input               ram8        tty23     tty63    vcs31 vcsa12 vcsa52
kmem                ram9        tty24     tty7     vcs32 vcsa13 vcsa53
kmsg                random      tty25     tty8     vcs33 vcsa14 vcsa54
log                 raw         tty26     tty9     vcs34 vcsa15 vcsa55
loop0               root        tty27     ttyS0    vcs35 vcsa16 vcsa56
loop1               rtc         tty28     ttyS1    vcs36 vcsa17 vcsa57
loop2               rtc0        tty29     ttyS2    vcs37 vcsa18 vcsa58
loop3               scd0        tty3      ttyS3    vcs38 vcsa19 vcsa59
loop4               sda         tty30     urandom vcs39 vcsa2   vcsa6
loop5               sda1        tty31     usbmon0 vcs4   vcsa20 vcsa60
loop6               sda2        tty32     usbmon1 vcs40 vcsa21 vcsa61
loop7               sda5        tty33     usbmon2 vcs41 vcsa22 vcsa62
lp0                 sdb         tty34     usbmon3 vcs42 vcsa23 vcsa63
mapper              sdb1        tty35     usbmon4 vcs43 vcsa24 vcsa7
mcelog              sequencer   tty36     usbmon5 vcs44 vcsa25 vcsa8
mem                 sequencer2 tty37     usbmon6 vcs45 vcsa26 vcsa9
mixer               sg0         tty38     usbmon7 vcs46 vcsa27 vga_arbiter
net                 sg1         tty39     usbmon8 vcs47 vcsa28 zero
network_latency     sg2         tty4      vcs      vcs48 vcsa29
network_throughput shm         tty40     vcs0     vcs49 vcsa3

---------------------

Thanks for taking the time guys!

On Thu, Sep 16, 2010 at 10:25 AM, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

One more time. Please, submit :-
# ls -l /dev/xen

Boris.

--- On Thu, 9/16/10, hurenkam <hurenkam@xxxxxxxxx> wrote:

From: hurenkam <hurenkam@xxxxxxxxx>

Subject: Re: [Xen-users] Re: Xen 4.0.1 on Ubuntu Lucid 10.04 - Desktop / Server - 64 Bits - With OpenGL (Intel GEM) enabled - From Linuxcon Brazil! :-D

To: "Priya" <pbhat@xxxxxxxxxxxx>
Cc: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, nunziaG84@xxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx, "Pasi Kärkkäinen" <pasik@xxxxxx>
Date: Thursday, September 16, 2010, 10:17 AM

Hi,

> And then when I reboot the machine, xend does not start. On issuing
> the command /etc/init.d/xend start, or status, there is no terminal
> output.
> When I type in "xend start" directly, I get the following error
> message:
> sudo xend start
>>
>> the output is:
>>
>> ERROR Internal error: Could not obtain handle on privileged command
> interface

Do you have xenfs mounted?
see if the following line comes up in the list if you type mount:

# mount
...
xenfs on /proc/xen type xenfs (rw)
...

If not, then you can try mounting it manually. If xenfs is compiled as
a module, you may have to modprobe it first. If it is not enabled in
your
kernel, then you have to rebuild your dom0 kernel, and enable it.

On my (Ubuntu Server 10.04.1 based) system, this gets mounted
automatically
by either udev or xend itself (it is not in fstab).

In my experience on this system, xend fails ususually due to one of the
following reasons:
1) Failure to mount xenfs (because it is not configured, or the module
is
not loaded).
2) Inconsistent installation of xentools (in wrong python directory or
mixed with older version).

Regards,
Mark.

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--
Priya Bhat