[Xen-users] Problem with live migration

[Christoph Kaminski <mangel@xxxxxx>]

Hi

I have a problem with live migration of a pv domU:

xen 4.0
kernel pv 2.6.32


Log on source host:

[2010-07-03 03:22:24 15981] ERROR (XendCheckpoint:178) Save failed on 
domain asmodeus (1) - resuming.
Traceback (most recent call last):
  File "/usr/lib/xen-4.0/lib/python/xen/xend/XendCheckpoint.py", line 
121, in save
    cmd = [xen.util.auxbin.pathTo(XC_SAVE), str(fd),
AttributeError: 'module' object has no attribute 'pathTo'
[2010-07-03 03:22:24 15981] DEBUG (XendDomainInfo:3117) 
XendDomainInfo.resumeDomain(1)

Log on destination host:

[2010-07-03 03:22:24 8484] DEBUG (XendDomainInfo:235) 
XendDomainInfo.restore(['domain', ['domid', '1'], ['cpu_weight', '256'], 
['cpu_cap', '0'], ['on_crash', 'destroy'], ['uuid', 
'02917692-affc-29f8-b74d-1db484fa405a'], ['bootloader_args'], ['vcpus', 
'1'], ['name', 'asmodeus'], ['on_poweroff', 'destroy'], ['on_reboot', 
'destroy'], ['cpus', [['0', '1', '2']]], ['bootloader', 
'/usr/lib/xen-4.0/bin/pygrub'], ['maxmem', '256'], ['memory', '252'], 
['shadow_memory', '0'], ['vcpu_avail', '1'], ['features'], 
['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], ['start_time', 
'1278018603.61'], ['cpu_time', '2390.83094801'], ['online_vcpus', '1'], 
['image', ['linux', ['kernel'], ['args', 'console=hvc0'], ['superpages', 
'0'], ['tsc_mode', '0'], ['videoram', '4'], ['pci', []], ['nomigrate', 
'0'], ['notes', ['HV_START_LOW', '4118806528'], ['FEATURES', 
'!writable_page_tables|pae_pgdir_above_4gb'], ['VIRT_BASE', 
'3221225472'], ['GUEST_VERSION', '2.6'], ['PADDR_OFFSET', '0'], 
['GUEST_OS', 'linux'], ['HYPERCALL_PAGE', '3238010880'], ['LOADER', 
'generic'], ['SUSPEND_CANCEL', '1'], ['PAE_MODE', 'yes'], ['ENTRY', 
'3242119168'], ['XEN_VERSION', 'xen-3.0']]]], ['status', '2'], ['state', 
'-b----'], ['device', ['vif', ['bridge', 'xenbr5'], ['mac', 
'00:16:3E:05:32:50'], ['script', '/etc/xen/scripts/vif-bridge'], 
['uuid', 'a446ceb8-5760-a793-a1ce-c8d6a0f97e71'], ['backend', '0']]], 
['device', ['vif', ['bridge', 'xenbr15'], ['mac', '00:16:3E:15:32:50'], 
['script', '/etc/xen/scripts/vif-bridge'], ['uuid', 
'4650dd36-fed7-d4a4-7d0c-8c494c43c6d9'], ['backend', '0']]], ['device', 
['vif', ['bridge', 'xenbr2'], ['mac', '00:16:3E:02:32:50'], ['script', 
'/etc/xen/scripts/vif-bridge'], ['uuid', 
'dbe5d466-e1d7-96e6-9b70-7b7bc89c82fb'], ['backend', '0']]], ['device', 
['vbd', ['protocol', 'x86_32-abi'], ['uuid', 
'05947af0-5eba-1856-e511-625c7fe85e5c'], ['bootable', '1'], ['dev', 
'xvda:disk'], ['uname', 'drbd:asmodeus-root'], ['mode', 'w'], 
['backend', '0'], ['VDI']]], ['device', ['console', ['protocol', 
'vt100'], ['location', '2'], ['uuid', 
'56758443-50d1-c3c7-88b7-e1bb9a0a9932']]], ['change_home_server', 
'False']])
[2010-07-03 03:22:24 8484] DEBUG (XendDomainInfo:2508) 
XendDomainInfo.constructDomain
[2010-07-03 03:22:24 8484] DEBUG (balloon:220) Balloon: 1199472 KiB 
free; need 16384; done.
[2010-07-03 03:22:24 8484] DEBUG (XendDomain:464) Adding Domain: 10
[2010-07-03 03:22:24 8484] DEBUG (XendDomainInfo:3400) Storing VM 
details: {'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': 
'02917692-affc-29f8-b74d-1db484fa405a', 'on_reboot': 'destroy', 
'start_time': '1278018603.61', 'on_poweroff': 'destroy', 
'bootloader_args': '', 'on_xend_start': 'ignore', 'on_crash': 'destroy', 
'xend/restart_count': '0', 'vcpus': '1', 'vcpu_avail': '1', 
'bootloader': '/usr/lib/xen-4.0/bin/pygrub', 'image': "(linux (kernel ) 
(args 'console=hvc0') (superpages 0) (tsc_mode 0) (videoram 4) (pci ()) 
(nomigrate 0) (notes (HV_START_LOW 4118806528) (FEATURES 
'!writable_page_tables|pae_pgdir_above_4gb') (VIRT_BASE 3221225472) 
(GUEST_VERSION 2.6) (PADDR_OFFSET 0) (GUEST_OS linux) (HYPERCALL_PAGE 
3238010880) (LOADER generic) (SUSPEND_CANCEL 1) (PAE_MODE yes) (ENTRY 
3242119168) (XEN_VERSION xen-3.0)))", 'name': 'asmodeus'}
[2010-07-03 03:22:24 8484] INFO (XendDomainInfo:2367) createDevice: 
console : {'protocol': 'vt100', 'location': '2', 'uuid': 
'56758443-50d1-c3c7-88b7-e1bb9a0a9932'}
[2010-07-03 03:22:24 8484] DEBUG (DevController:95) DevController: 
writing {'state': '1', 'backend-id': '0', 'backend': 
'/local/domain/0/backend/console/10/0'} to 
/local/domain/10/device/console/0.
[2010-07-03 03:22:24 8484] DEBUG (DevController:97) DevController: 
writing {'domain': 'asmodeus', 'frontend': 
'/local/domain/10/device/console/0', 'uuid': 
'56758443-50d1-c3c7-88b7-e1bb9a0a9932', 'frontend-id': '10', 'state': 
'1', 'location': '2', 'online': '1', 'protocol': 'vt100'} to 
/local/domain/0/backend/console/10/0.
[2010-07-03 03:22:24 8484] INFO (XendDomainInfo:2367) createDevice: vbd 
: {'protocol': 'x86_32-abi', 'uuid': 
'05947af0-5eba-1856-e511-625c7fe85e5c', 'bootable': 1, 'driver': 
'paravirtualised', 'dev': 'xvda:disk', 'uname': 'drbd:asmodeus-root', 
'mode': 'w', 'backend': '0'}
[2010-07-03 03:22:24 8484] DEBUG (DevController:95) DevController: 
writing {'virtual-device': '51712', 'protocol': 'x86_32-abi', 
'device-type': 'disk', 'backend-id': '0', 'state': '1', 'backend': 
'/local/domain/0/backend/vbd/10/51712'} to 
/local/domain/10/device/vbd/51712.
[2010-07-03 03:22:24 8484] DEBUG (DevController:97) DevController: 
writing {'domain': 'asmodeus', 'frontend': 
'/local/domain/10/device/vbd/51712', 'uuid': 
'05947af0-5eba-1856-e511-625c7fe85e5c', 'bootable': '1', 'dev': 'xvda', 
'state': '1', 'params': 'asmodeus-root', 'mode': 'w', 'online': '1', 
'frontend-id': '10', 'type': 'drbd'} to 
/local/domain/0/backend/vbd/10/51712.
[2010-07-03 03:22:24 8484] INFO (XendDomainInfo:2367) createDevice: vif 
: {'bridge': 'xenbr5', 'mac': '00:16:3E:05:32:50', 'script': 
'/etc/xen/scripts/vif-bridge', 'uuid': 
'a446ceb8-5760-a793-a1ce-c8d6a0f97e71', 'backend': '0'}
[2010-07-03 03:22:24 8484] DEBUG (DevController:95) DevController: 
writing {'backend-id': '0', 'mac': '00:16:3E:05:32:50', 'handle': '0', 
'state': '1', 'backend': '/local/domain/0/backend/vif/10/0'} to 
/local/domain/10/device/vif/0.
[2010-07-03 03:22:24 8484] DEBUG (DevController:97) DevController: 
writing {'bridge': 'xenbr5', 'domain': 'asmodeus', 'handle': '0', 
'uuid': 'a446ceb8-5760-a793-a1ce-c8d6a0f97e71', 'script': 
'/etc/xen/scripts/vif-bridge', 'mac': '00:16:3E:05:32:50', 
'frontend-id': '10', 'state': '1', 'online': '1', 'frontend': 
'/local/domain/10/device/vif/0'} to /local/domain/0/backend/vif/10/0.
[2010-07-03 03:22:24 8484] INFO (XendDomainInfo:2367) createDevice: vif 
: {'bridge': 'xenbr15', 'mac': '00:16:3E:15:32:50', 'script': 
'/etc/xen/scripts/vif-bridge', 'uuid': 
'4650dd36-fed7-d4a4-7d0c-8c494c43c6d9', 'backend': '0'}
[2010-07-03 03:22:24 8484] DEBUG (DevController:95) DevController: 
writing {'backend-id': '0', 'mac': '00:16:3E:15:32:50', 'handle': '1', 
'state': '1', 'backend': '/local/domain/0/backend/vif/10/1'} to 
/local/domain/10/device/vif/1.
[2010-07-03 03:22:24 8484] DEBUG (DevController:97) DevController: 
writing {'bridge': 'xenbr15', 'domain': 'asmodeus', 'handle': '1', 
'uuid': '4650dd36-fed7-d4a4-7d0c-8c494c43c6d9', 'script': 
'/etc/xen/scripts/vif-bridge', 'mac': '00:16:3E:15:32:50', 
'frontend-id': '10', 'state': '1', 'online': '1', 'frontend': 
'/local/domain/10/device/vif/1'} to /local/domain/0/backend/vif/10/1.
[2010-07-03 03:22:24 8484] INFO (XendDomainInfo:2367) createDevice: vif 
: {'bridge': 'xenbr2', 'mac': '00:16:3E:02:32:50', 'script': 
'/etc/xen/scripts/vif-bridge', 'uuid': 
'dbe5d466-e1d7-96e6-9b70-7b7bc89c82fb', 'backend': '0'}
[2010-07-03 03:22:24 8484] DEBUG (DevController:95) DevController: 
writing {'backend-id': '0', 'mac': '00:16:3E:02:32:50', 'handle': '2', 
'state': '1', 'backend': '/local/domain/0/backend/vif/10/2'} to 
/local/domain/10/device/vif/2.
[2010-07-03 03:22:24 8484] DEBUG (DevController:97) DevController: 
writing {'bridge': 'xenbr2', 'domain': 'asmodeus', 'handle': '2', 
'uuid': 'dbe5d466-e1d7-96e6-9b70-7b7bc89c82fb', 'script': 
'/etc/xen/scripts/vif-bridge', 'mac': '00:16:3E:02:32:50', 
'frontend-id': '10', 'state': '1', 'online': '1', 'frontend': 
'/local/domain/10/device/vif/2'} to /local/domain/0/backend/vif/10/2.
[2010-07-03 03:22:24 8484] DEBUG (XendDomainInfo:1804) Storing domain 
details: {'image/entry': '3242119168', 'console/port': '2', 
'image/loader': 'generic', 'vm': 
'/vm/02917692-affc-29f8-b74d-1db484fa405a', 
'control/platform-feature-multiprocessor-suspend': '1', 
'image/hv-start-low': '4118806528', 'image/guest-os': 'linux', 
'image/virt-base': '3221225472', 'memory/target': '258048', 
'image/guest-version': '2.6', 'image/pae-mode': 'yes', 'description': 
'', 'console/limit': '1048576', 'image/paddr-offset': '0', 
'image/hypercall-page': '3238010880', 'image/suspend-cancel': '1', 
'cpu/0/availability': 'online', 'image/features/pae-pgdir-above-4gb': 
'1', 'image/features/writable-page-tables': '0', 'console/type': 
'xenconsoled', 'name': 'asmodeus', 'domid': '10', 'image/xen-version': 
'xen-3.0', 'store/port': '1'}
[2010-07-03 03:22:25 8484] DEBUG (XendCheckpoint:286) 
restore:shadow=0x0, _static_max=0x10000000, _static_min=0x0,
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:3053) 
XendDomainInfo.destroy: domid=10
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2416) No device model
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2418) Releasing devices
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2424) Removing vif/0
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:1286) 
XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2424) Removing vif/1
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:1286) 
XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/1
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2424) Removing vif/2
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:1286) 
XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/2
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2424) Removing vbd/51712
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:1286) 
XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/51712
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:2424) Removing console/0
[2010-07-03 03:22:25 8484] DEBUG (XendDomainInfo:1286) 
XendDomainInfo.destroyDevice: deviceClass = console, device = console/0
[2010-07-03 03:22:25 8484] INFO (XendDomain:1107) Domain asmodeus 
(02917692-affc-29f8-b74d-1db484fa405a) deleted.
[2010-07-03 03:22:25 8484] ERROR (XendCheckpoint:357) 'module' object 
has no attribute 'pathTo'
Traceback (most recent call last):
  File "/usr/lib/xen-4.0/lib/python/xen/xend/XendCheckpoint.py", line 
302, in restore
    cmd = map(str, [xen.util.auxbin.pathTo(XC_RESTORE),
AttributeError: 'module' object has no attribute 'pathTo'
[2010-07-03 03:22:25 8484] ERROR (XendDomain:1181) Restore failed
Traceback (most recent call last):
  File "/usr/lib/xen-4.0/lib/python/xen/xend/XendDomain.py", line 1159, 
in domain_restore_fd
    dominfo = XendCheckpoint.restore(self, fd, paused=paused, 
relocating=relocating)
  File "/usr/lib/xen-4.0/lib/python/xen/xend/XendCheckpoint.py", line 
358, in restore
    raise exn
AttributeError: 'module' object has no attribute 'pathTo'

any solutions?

--

Greetz


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