Xen users - Aug 2007 - xend won''t start

Hi *,

- new to Xen
- compiled Xen 3.1 from source on Slackware 12, on a Pentium-M laptop
   with a USB disk
- booted Dom0
- xend won''t start.

Any help is most welcome...

Thanks,

Jan


Here are the logs:

/var/log/debug
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: blktapctrl: v1.0.0
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: Found driver: [raw image (aio)]
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: Found driver: [raw image (sync)]
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: Found driver: [vmware image (vmdk)]
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: Found driver: [ramdisk image (ram)]
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: Found driver: [qcow disk (qcow)]
Aug 16 17:04:48 a8 BLKTAPCTRL[1298]: Unable to start blktapctrl

/var/log/syslog
Aug 16 17:04:48 a8 xenstored: Checking store ...
Aug 16 17:04:48 a8 xenstored: Checking store complete.
Aug 16 17:04:48 a8 xenstored: Checking store ...
Aug 16 17:04:48 a8 xenstored: Checking store complete.

/var/log/xen/xend-debug.log
Xend started at Thu Aug 16 17:04:48 2007.
Exception starting xend: (111, ''Connection refused'')

/var/log/xen/xend.log
[2007-08-16 17:04:48 1301] INFO (SrvDaemon:331) Xend Daemon started
[2007-08-16 17:04:48 1301] INFO (SrvDaemon:335) Xend changeset: unavailable.
[2007-08-16 17:04:48 1301] INFO (SrvDaemon:342) Xend version: Unknown.
[2007-08-16 17:04:48 1301] ERROR (SrvDaemon:353) Exception starting xend 
((111, ''Connection refused''))
Traceback (most recent call last):
   File "//usr/lib/python/xen/xend/server/SrvDaemon.py", line 345, in
run
     servers = SrvServer.create()
   File "//usr/lib/python/xen/xend/server/SrvServer.py", line 254, in
create
     root.putChild(''xend'', SrvRoot())
   File "//usr/lib/python/xen/xend/server/SrvRoot.py", line 40, in
__init__
     self.get(name)
   File "//usr/lib/python/xen/web/SrvDir.py", line 82, in get
     val = val.getobj()
   File "//usr/lib/python/xen/web/SrvDir.py", line 52, in getobj
     self.obj = klassobj()
   File "//usr/lib/python/xen/xend/server/SrvDomainDir.py", line 41,
in
__init__
     self.xd = XendDomain.instance()
   File "//usr/lib/python/xen/xend/XendDomain.py", line 1518, in
instance
     inst.init()
   File "//usr/lib/python/xen/xend/XendDomain.py", line 109, in init
     xstransact.Mkdir(XS_VMROOT)
   File "//usr/lib/python/xen/xend/xenstore/xstransact.py", line 346,
in
Mkdir
     complete(path, lambda t: t.mkdir(*args))
   File "//usr/lib/python/xen/xend/xenstore/xstransact.py", line 352,
in
complete
     t = xstransact(path)
   File "//usr/lib/python/xen/xend/xenstore/xstransact.py", line 21,
in
__init__
     self.transaction = xshandle().transaction_start()
   File "//usr/lib/python/xen/xend/xenstore/xsutil.py", line 18, in
xshandle
     xs_handle = xen.lowlevel.xs.xs()
Error: (111, ''Connection refused'')
[2007-08-16 17:04:49 1300] INFO (SrvDaemon:219) Xend exited with status 1.



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Jan Vejvalka schrieb:
> Hi *,
> 
> - new to Xen
> - compiled Xen 3.1 from source on Slackware 12, on a Pentium-M laptop
>   with a USB disk
> - booted Dom0
> - xend won''t start.
> Here are the logs:
> /var/log/xen/xend-debug.log
> Xend started at Thu Aug 16 17:04:48 2007.
> Exception starting xend: (111, ''Connection refused'')
>
Hi Jan,

I assume you didn''t boot the Xen Hypervisor instead of your dom0
Kernel.

Did you changed your grub/menu.lst to soemthing like?

title           Xen 3.1-i386-pae / kernel 2.6.18-xen_3.1.0
root            (hd0,0)
kernel          /xen-3.1-i386-pae.gz
module          /vmlinuz-2.6.18-xen_3.1.0
root=UUID=52f9735d-399e-40bc-b0ef-f78f2b00fa19 ro console=tty0
module          /initrd.img-2.6.18-xen-3.1.0
quiet

(Just copy''n paste from one machine here, you might want to adjust the
names)



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Hi Stephan, thank you for your help.

I think that I am booting xen correctly, this is the section in my 
grub/menu.lst (I hope it''s OK without the initrd):

title Xen 3.1 / XenLinux 2.6
root (hd0,0)
kernel /xen-3.1.gz console=vga
module /vmlinuz-2.6-xen0 root=/dev/sda8 ro console=tty0 rootdelay=8

I''m not sure if this message in the dmesg could be a clue:

** WARNING: Currently emulating unsupported memory accesses  **
**          in /lib/tls glibc libraries. The emulation is    **
**          slow. To ensure full performance you should      **
**          install a ''xen-friendly'' (nosegneg) version of  
**
**          the library, or disable tls support by executing **
**          the following as root:                           **
**          mv /lib/tls /lib/tls.disabled                    **
** Offending process: init (pid=1035)                        **

I''m getting this message despite having no /lib/tls ...

Any help is more than welcome :-)

Jan


Stephan Seitz wrote:
 > Hi Jan,
 >
 > I assume you didn''t boot the Xen Hypervisor instead of your dom0
Kernel.
 >
 > Did you changed your grub/menu.lst to soemthing like?
 >
 > title           Xen 3.1-i386-pae / kernel 2.6.18-xen_3.1.0
 > root            (hd0,0)
 > kernel          /xen-3.1-i386-pae.gz
 > module          /vmlinuz-2.6.18-xen_3.1.0 
root=UUID=52f9735d-399e-40bc-b0ef-f78f2b00fa19 ro console=tty0
 > module          /initrd.img-2.6.18-xen-3.1.0
 > quiet
 >
 > (Just copy''n paste from one machine here, you might want to
adjust
the names)
> Jan Vejvalka schrieb:
>> Hi *,
>>
>> - new to Xen
>> - compiled Xen 3.1 from source on Slackware 12, on a Pentium-M laptop
>>   with a USB disk
>> - booted Dom0
>> - xend won''t start.
> 
>> Here are the logs:
 >> (...)


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