[Xen-users] Can't get a DomU to run

[Ed W <lists@xxxxxxxxxxxxxx>]

Hi, I have booted into a Dom0 kernel on a fairly stripped down machine 
just running the basics needed.  However, I haven't yet managed to get a 
DomU booting.  I constantly get the following error "Error: Received 
invalid response from Xend, twice." on trying to start the domain
Where do I actually look to try and debug this further?  I do have 
SELinux compiled in on this kernel, but it's in non-enforcing mode
nn1 xen # xm create -c ttylinux
Using config file "ttylinux".
Error: Received invalid response from Xend, twice.

nn1 xen # xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0      125     2 r-----   641.6
Domain-16                         16       64     1 --p---     0.0

nn1 xen # more ttylinux
kernel = "/boot/vmlinuz-2.6.12.6-xenU"
memory = 64
name = "ttylinux"
vif = [ '' ]
ip = "80.77.245.163"
disk = ['file:/tmp/ttylinux/ttylinux-xen/rootfs,sda1,w']
root = "/dev/sda1 ro"

nn1 xen # ls /tmp/ttylinux/ttylinux-xen
/tmp/ttylinux/ttylinux-xen


/var/log/xend says:

[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:177) 
XendDomainInfo.create(['vm', ['name', 'ttylinux'], ['memory', '64'], 
['vcpus', '1'], ['image', ['linux', ['kernel', 
'/boot/vmlinuz-2.6.12.6-xenU'], ['ip', 
'80.77.245.163:1.2.3.4::::eth0:off'], ['root', '/dev/sda1 ro']]], 
['device', ['vbd', ['uname', 'file:/tmp/ttylinux/ttylinux-xen'], ['dev', 
'sda1'], ['mode', 'w']]], ['device', ['vif']]])
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:282) 
parseConfig: config is ['vm', ['name', 'ttylinux'], ['memory', '64'], 
['vcpus', '1'], ['image', ['linux', ['kernel', 
'/boot/vmlinuz-2.6.12.6-xenU'], ['ip', 
'80.77.245.163:1.2.3.4::::eth0:off'], ['root', '/dev/sda1 ro']]], 
['device', ['vbd', ['uname', 'file:/tmp/ttylinux/ttylinux-xen'], ['dev', 
'sda1'], ['mode', 'w']]], ['device', ['vif']]]
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:376) 
parseConfig: result is {'ssidref': None, 'uuid': None, 'on_crash': None, 
'on_reboot': None, 'image': ['linux', ['kernel', 
'/boot/vmlinuz-2.6.12.6-xenU'], ['ip', 
'80.77.245.163:1.2.3.4::::eth0:off'], ['root', '/dev/sda1 ro']], 
'on_poweroff': None, 'cpus': None, 'name': 'ttylinux', 'backend': [], 
'vcpus': 1, 'cpu_weight': None, 'vcpu_avail': None, 'memory': 64, 
'device': [('vbd', ['vbd', ['uname', 'file:/tmp/ttylinux/ttylinux-xen'], 
['dev', 'sda1'], ['mode', 'w']]), ('vif', ['vif'])], 'bootloader': None, 
'cpu': None, 'maxmem': None}
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:1130) 
XendDomainInfo.construct: None 0
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:1162) 
XendDomainInfo.initDomain: 16 1.0
[2006-02-09 15:20:48 xend] DEBUG (balloon:84) Balloon: free 1895; need 
65; done.
[2006-02-09 15:20:48 xend] INFO (image:133) buildDomain os=linux dom=16 
vcpus=1
[2006-02-09 15:20:48 xend] DEBUG (image:171) dom            = 16
[2006-02-09 15:20:48 xend] DEBUG (image:172) image          = 
/boot/vmlinuz-2.6.12.6-xenU
[2006-02-09 15:20:48 xend] DEBUG (image:173) store_evtchn   = 1
[2006-02-09 15:20:48 xend] DEBUG (image:174) console_evtchn = 2
[2006-02-09 15:20:48 xend] DEBUG (image:175) cmdline        =  
ip=80.77.245.163:1.2.3.4::::eth0:off root=/dev/sda1 ro
[2006-02-09 15:20:48 xend] DEBUG (image:176) ramdisk        =
[2006-02-09 15:20:48 xend] DEBUG (image:177) vcpus          = 1
[2006-02-09 15:20:48 xend] CRITICAL (SrvDaemon:190) Xend died due to 
signal 11!  Restarting it.
[2006-02-09 15:20:48 xend] INFO (SrvDaemon:278) Xend Daemon started
[2006-02-09 15:20:48 xend] INFO (SrvDaemon:282) Xend changeset: Tue Jan 
31 11:04:12 2006 +0100 8738:eff96462fde8.
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:199) 
XendDomainInfo.recreate({'paused': 0, 'cpu_time': 640829708489L, 
'ssidref': 0, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0], 'shutdown_reason': 0, 'dying': 0, 'dom': 0, 'mem_kb': 128000, 
'maxmem_kb': -4, 'max_vcpu_id': 1, 'crashed': 0, 'running': 1, 
'shutdown': 0, 'online_vcpus': 2, 'blocked': 0})
[2006-02-09 15:20:48 xend.XendDomainInfo] INFO (XendDomainInfo:211) 
Recreating domain 0, UUID 00000000-0000-0000-0000-000000000000.
[2006-02-09 15:20:48 xend] DEBUG (XendDomain:151) number of vcpus to use 
is 0
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:199) 
XendDomainInfo.recreate({'paused': 1, 'cpu_time': 0L, 'ssidref': 0, 
'handle': [95, 69, 121, 38, 202, 12, 213, 93, 246, 190, 23, 141, 252, 
207, 203, 47], 'shutdown_reason': 0, 'dying': 0, 'dom': 16, 'mem_kb': 
65536, 'maxmem_kb': 65536, 'max_vcpu_id': 0, 'crashed': 0, 'running': 0, 
'shutdown': 0, 'online_vcpus': 1, 'blocked': 0})
[2006-02-09 15:20:48 xend.XendDomainInfo] INFO (XendDomainInfo:211) 
Recreating domain 16, UUID 5f457926-ca0c-d55d-f6be-178dfccfcb2f.
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:663) 
Storing VM details: {'ssidref': '0', 'uuid': 
'5f457926-ca0c-d55d-f6be-178dfccfcb2f', 'on_reboot': 'restart', 'image': 
'()', 'on_poweroff': 'destroy', 'name': 'Domain-16', 'vcpus': '1', 
'vcpu_avail': '1', 'memory': '64', 'on_crash': 'restart', 'maxmem': '64'}
[2006-02-09 15:20:48 xend.XendDomainInfo] DEBUG (XendDomainInfo:688) 
Storing domain details: {'cpu/0/availability': 'online', 
'memory/target': '65536', 'name': 'Domain-16', 'console/limit': 
'1048576', 'vm': '/vm/5f457926-ca0c-d55d-f6be-178dfccfcb2f', 'domid': '16'}
[2006-02-09 15:20:48 xend] INFO (SrvServer:114) unix 
path=/var/lib/xend/xend-socket
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:177) 
XendDomainInfo.create(['vm', ['name', 'ttylinux'], ['memory', '64'], 
['vcpus', '1'], ['image', ['linux', ['kernel', 
'/boot/vmlinuz-2.6.12.6-xenU'], ['ip', 
'80.77.245.163:1.2.3.4::::eth0:off'], ['root', '/dev/sda1 ro']]], 
['device', ['vbd', ['uname', 'file:/tmp/ttylinux/ttylinux-xen'], ['dev', 
'sda1'], ['mode', 'w']]], ['device', ['vif']]])
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:282) 
parseConfig: config is ['vm', ['name', 'ttylinux'], ['memory', '64'], ['v
cpus', '1'], ['image', ['linux', ['kernel', 
'/boot/vmlinuz-2.6.12.6-xenU'], ['ip', 
'80.77.245.163:1.2.3.4::::eth0:off'], ['root', '/dev/sda1 ro']]], 
['device', ['vbd', ['uname', 'file:/tmp/ttylinux/ttylinux-xen'], ['dev', 
'sda1'], ['mode', 'w']]], ['device', ['vif']]]
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:376) 
parseConfig: result is {'ssidref': None, 'uuid': None, 'on_crash': None, 
'on_reboot': None, 'image': ['linux', ['kernel', 
'/boot/vmlinuz-2.6.12.6-xenU'], ['ip', 
'80.77.245.163:1.2.3.4::::eth0:off'], ['root', '/dev/sda1 ro']], 
'on_poweroff': None, 'cpus': None, 'name': 'ttylinux', 'backend': [], 
'vcpus': 1, 'cpu_weight': None, 'vcpu_avail': None, 'memory': 64, 
'device': [('vbd', ['vbd', ['uname', 'file:/tmp/ttylinux/ttylinux-xen'], 
['dev', 'sda1'], ['mode', 'w']]), ('vif', ['vif'])], 'bootloader': None, 
'cpu': None, 'maxmem': None}
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:1130) 
XendDomainInfo.construct: None 0
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:1162) 
XendDomainInfo.initDomain: 17 1.0
[2006-02-09 15:20:53 xend] DEBUG (balloon:84) Balloon: free 1831; need 
65; done.
[2006-02-09 15:20:53 xend] INFO (image:133) buildDomain os=linux dom=17 
vcpus=1
[2006-02-09 15:20:53 xend] DEBUG (image:171) dom            = 17
[2006-02-09 15:20:53 xend] DEBUG (image:172) image          = 
/boot/vmlinuz-2.6.12.6-xenU
[2006-02-09 15:20:53 xend] DEBUG (image:173) store_evtchn   = 1
[2006-02-09 15:20:53 xend] DEBUG (image:174) console_evtchn = 2
[2006-02-09 15:20:53 xend] DEBUG (image:175) cmdline        =  
ip=80.77.245.163:1.2.3.4::::eth0:off root=/dev/sda1 ro
[2006-02-09 15:20:53 xend] DEBUG (image:176) ramdisk        =
[2006-02-09 15:20:53 xend] DEBUG (image:177) vcpus          = 1
[2006-02-09 15:20:53 xend] CRITICAL (SrvDaemon:190) Xend died due to 
signal 11!  Restarting it.
[2006-02-09 15:20:53 xend] INFO (SrvDaemon:278) Xend Daemon started
[2006-02-09 15:20:53 xend] INFO (SrvDaemon:282) Xend changeset: Tue Jan 
31 11:04:12 2006 +0100 8738:eff96462fde8.
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:199) 
XendDomainInfo.recreate({'paused': 0, 'cpu_time': 641138787157L, 
'ssidref': 0, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0], 'shutdown_reason': 0, 'dying': 0, 'dom': 0, 'mem_kb': 128000, 
'maxmem_kb': -4, 'max_vcpu_id': 1, 'crashed': 0, 'running': 1, 
'shutdown': 0, 'online_vcpus': 2, 'blocked': 0})
[2006-02-09 15:20:53 xend.XendDomainInfo] INFO (XendDomainInfo:211) 
Recreating domain 0, UUID 00000000-0000-0000-0000-000000000000.
[2006-02-09 15:20:53 xend] DEBUG (XendDomain:151) number of vcpus to use 
is 0
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:199) 
XendDomainInfo.recreate({'paused': 1, 'cpu_time': 0L, 'ssidref': 0, 
'handle': [95, 69, 121, 38, 202, 12, 213, 93, 246, 190, 23, 141, 252, 
207, 203, 47], 'shutdown_reason': 0, 'dying': 0, 'dom': 16, 'mem_kb': 
65536, 'maxmem_kb': 65536, 'max_vcpu_id': 0, 'crashed': 0, 'running': 0, 
'shutdown': 0, 'online_vcpus': 1, 'blocked': 0})
[2006-02-09 15:20:53 xend.XendDomainInfo] INFO (XendDomainInfo:211) 
Recreating domain 16, UUID 5f457926-ca0c-d55d-f6be-178dfccfcb2f.
[2006-02-09 15:20:53 xend.XendDomainInfo] DEBUG (XendDomainInfo:199) 
XendDomainInfo.recreate({'paused': 1, 'cpu_time': 0L, 'ssidref': 0, 
'handle': [95, 69, 121, 38, 202, 12, 213, 93, 246, 190, 23, 141, 252, 
207, 203, 47], 'shutdown_reason': 0, 'dying': 0, 'dom': 17, 'mem_kb': 
65536, 'maxmem_kb': 65536, 'max_vcpu_id': 0, 'crashed': 0, 'running': 0, 
'shutdown': 0, 'online_vcpus': 1, 'blocked': 0})
[2006-02-09 15:20:53 xend.XendDomainInfo] INFO (XendDomainInfo:211) 
Recreating domain 17, UUID 5f457926-ca0c-d55d-f6be-178dfccfcb2f.
[2006-02-09 15:20:53 xend] ERROR (XendDomain:209) Failed to recreate 
information for domain 17.  Destroying it in the hope of recovery.
Traceback (most recent call last):
 File "/usr/lib/python2.4/site-packages/xen/xend/XendDomain.py", line 
203, in refresh
   self._add_domain(
 File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", 
line 235, in recreate
   vm = XendDomainInfo(xeninfo, domid, dompath, True, priv)
 File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", 
line 433, in __init__
   self.validateInfo()
 File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", 
line 561, in validateInfo
   self.check_name(self.info['name'])
 File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", 
line 1118, in check_name
   raise VmError("VM name '%s' is used in both domains %d and %d" %
VmError: VM name 'Domain-16' is used in both domains 17 and 16
[2006-02-09 15:20:53 xend] INFO (SrvServer:114) unix 
path=/var/lib/xend/xend-socket

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