Hi,

   I've been using xVM with no problems since 2009.06 release (centos4/5, 
rhel4/5, sol10 as guests). This was using the 111a version. Just installed a 
new server with the 111b version
and .... 

virt-install --nographics -p -r 8192 -n CentOS_48_64_92 -f 
/dev/zvol/dsk/zm0/vm/CentOS_48_64_92 -l ftp://192.168.101.120/pub/CentOS-48 -w 
bridge=aggr0 --os-type=linux --os-variant=rhel4


Starting install...
Retrieving file vmlinuz.. 100% |=========================|    0 B    00:00
Retrieving file initrd.im 100% |=========================|    0 B    00:00
virDomainCreateLinux() failed POST operation failed: (xend.err "Error creating 
domain: (22, 'Invalid argument')")
Domain installation may not have been
 successful.  If it was, you can restart your domain
 by running 'virsh start CentOS_48_64_92'; otherwise, please
 restart your installation.
Mon, 07 Jun 2010 23:15:57 ERROR    virDomainCreateLinux() failed POST operation 
failed: (xend.err "Error creating domain: (22, 'Invalid argument')")
Traceback (most recent call last):
  File "/usr/bin/virt-install", line 511, in ?
    main()
  File "/usr/bin/virt-install", line 471, in main
    dom = guest.start_install(conscb,progresscb)
  File 
"/export/builds/xvm_111a///proto/install/usr/lib/python2.4/site-packages/virtinst/Guest.py",
 line 923, in start_install
  File 
"/export/builds/xvm_111a///proto/install/usr/lib/python2.4/site-packages/virtinst/Guest.py",
 line 944, in _do_install
  File "libvirt.py", line 585, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', 
conn=self)
libvirtError: virDomainCreateLinux() failed POST operation failed: (xend.err 
"Error creating domain: (22, 'Invalid argument')")

xend.log seem to give no further clues
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:85) 
XendDomainInfo.create(['vm', ['name', 'CentOS_48_64_92'], ['memory', '8192'], 
['maxmem', '8192'], ['vcpus', '1'], ['uuid', 
'cc0ef9fb-95e4-fff8-4ce6-2a0d0473a3e7'], ['on_poweroff', 'destroy'], 
['on_reboot', 'destroy'], ['on_crash', 'destroy'], ['distro', 'centos'], 
['image', ['linux', ['kernel', '/var/tmp/virtinst-vmlinuz.l0PCWc'], ['ramdisk', 
'/var/tmp/virtinst-initrd.img.YPkxEy'], ['args', ' 
method=ftp://192.168.101.120/pub/CentOS-48']]], ['device', ['vbd', ['dev', 
'xvda'], ['uname', 'phy:/dev/zvol/dsk/zm0/vm/CentOS_48_64_92'], ['mode', 
'w']]], ['device', ['vif', ['mac', '00:16:3e:2f:e0:b3'], ['bridge', 'aggr0']]]])
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1643) 
XendDomainInfo.constructDomain
[2010-06-07 23:15:57 365] DEBUG (balloon:116) Balloon: 8395016 KiB free; need 
2048; done.
[2010-06-07 23:15:57 365] DEBUG (XendDomain:435) Adding Domain: 7
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1710) 
XendDomainInfo.initDomain: 7 256
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1752) 
_initDomain:shadow_memory=0x0, memory_static_max=0x200000000, 
memory_static_min=0x0.
[2010-06-07 23:15:57 365] DEBUG (balloon:116) Balloon: 8395008 KiB free; need 
8388608; done.
[2010-06-07 23:15:57 365] INFO (image:129) buildDomain os=linux dom=7 vcpus=1
[2010-06-07 23:15:57 365] DEBUG (image:204) domid          = 7
[2010-06-07 23:15:57 365] DEBUG (image:205) memsize        = 8192
[2010-06-07 23:15:57 365] DEBUG (image:206) image          = 
/var/tmp/virtinst-vmlinuz.l0PCWc
[2010-06-07 23:15:57 365] DEBUG (image:207) store_evtchn   = 1
[2010-06-07 23:15:57 365] DEBUG (image:208) console_evtchn = 2
[2010-06-07 23:15:57 365] DEBUG (image:209) cmdline        =  
method=ftp://192.168.101.120/pub/CentOS-48
[2010-06-07 23:15:57 365] DEBUG (image:210) ramdisk        = 
/var/tmp/virtinst-initrd.img.YPkxEy
[2010-06-07 23:15:57 365] DEBUG (image:211) vcpus          = 1
[2010-06-07 23:15:57 365] DEBUG (image:212) features       =
[2010-06-07 23:15:57 365] ERROR (XendDomainInfo:1794) 
XendDomainInfo.initDomain: exception occurred
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 
1769, in _initDomain
  File "/usr/lib/python2.4/site-packages/xen/xend/image.py", line 112, in 
createImage
  File "/usr/lib/python2.4/site-packages/xen/xend/image.py", line 131, in 
createDomain
  File "/usr/lib/python2.4/site-packages/xen/xend/image.py", line 538, in 
buildDomain
  File "/usr/lib/python2.4/site-packages/xen/xend/image.py", line 221, in 
buildDomain
Error: (22, 'Invalid argument')
[2010-06-07 23:15:57 365] ERROR (XendDomainInfo:441) VM start failed
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 421, 
in start
  File "/usr/lib/python2.4/site-packages/xen/xend/XendTask.py", line 209, in 
log_progress
  File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 
1797, in _initDomain
VmError: (22, 'Invalid argument')
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1943) XendDomainInfo.destroy: 
domid=7
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1962) 
XendDomainInfo.destroyDomain(7)
[2010-06-07 23:15:57 365] ERROR (XendDomainInfo:90) Domain construction failed
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 88, 
in create
  File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 421, 
in start
  File "/usr/lib/python2.4/site-packages/xen/xend/XendTask.py", line 209, in 
log_progress
  File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 
1797, in _initDomain
VmError: (22, 'Invalid argument')
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1943) XendDomainInfo.destroy: 
domid=None
[2010-06-07 23:15:57 365] DEBUG (XendDomainInfo:1962) 
XendDomainInfo.destroyDomain(None)
[2010-06-07 23:15:57 365] ERROR (SrvBase:88) Request create failed.
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/xen/web/SrvBase.py", line 85, in 
perform
  File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvDomainDir.py", line 
82, in op_create
XendError: Error creating domain: (22, 'Invalid argument')


Sorry to post but I've no idea how to fix (other than going back to 111a ?), 
googling I found similar errors relating to 32bit problems and seem to recall 
vaguely that 111b has
some 32bit hooks to get the dev image-update working.

Any ideas ?

Thanks in advance

Trev

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