http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=481
Summary: domU restore does not work
Product: Xen
Version: unstable
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Tools
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: ping.y.yu@xxxxxxxxx
Environment:
------------
Service OS (ia32/ia32e/IA64): ia32
Guest OS (ia32/ia32e/IA64): ia32
Change Set: 8613
Bug detailed description:
--------------------------
In changeset 8613, "xm restore" could not work. When run command "xm restore",
An error message will be show:
Error: /usr/lib/xen/bin/xc_restore 10 16 5 18432 1 2 failed
Reproduce steps:
----------------
(1)xm create <domU>
(2)xm save aaa
(3)xm restore aaa
Current result:
----------------
an error message has reportd
Expected result:
----------------
No error
Basic root-causing log:
----------------------
[2006-01-17 10:29:31 xend.XendDomainInfo] DEBUG (XendDomainInfo:252)
XendDomainInfo.restore(['domain', ['domid', '4'],
['uuid', 'd5fdf023-a70d-74b6-3f47-efeefd6da1ef'], ['ssidref', '0'],
['vcpus', '1'], ['vcpu_avail', '1'],
['cpu_weight', '1.0'], ['memory', '64'], ['maxmem', '64'],
['name', 'ExampleDomain09'], ['on_poweroff', 'destroy'],
['on_reboot', 'restart'], ['on_crash', 'restart'], ['image', ['linux',
['kernel', '/boot/vmlinuz-2.6.12-xenU'],
['root', '/dev/hda1 ro'], ['args', '4']]], ['device', ['vif',
['backend', '0'], ['script', 'vif-bridge'],
['mac', '00:16:3e:10:93:a2']]], ['device', ['vbd', ['backend', '0'],
['dev', 'hda1'],
['uname', 'file:/var/vmmtest/rhel4u1_xenU-32.img'], ['mode', 'w']]],
['state', '-b----'],
['shutdown_reason', 'poweroff'], ['cpu_time', '4.943557536'],
['online_vcpus', '1'], ['up_time', '259.28576684'],
['start_time', '1137511507.66'], ['store_mfn', '33812'],
['console_mfn', '33811']])
[2006-01-17 10:29:31 xend.XendDomainInfo] DEBUG (XendDomainInfo:282)
parseConfig: config is ['domain', ['domid', '4'],
['uuid', 'd5fdf023-a70d-74b6-3f47-efeefd6da1ef'], ['ssidref', '0'],
['vcpus', '1'], ['vcpu_avail', '1'],
['cpu_weight', '1.0'], ['memory', '64'], ['maxmem', '64'],
['name', 'ExampleDomain09'], ['on_poweroff', 'destroy'],
['on_reboot', 'restart'], ['on_crash', 'restart'], ['image', ['linux',
['kernel', '/boot/vmlinuz-2.6.12-xenU'],
['root', '/dev/hda1 ro'], ['args', '4']]], ['device', ['vif',
['backend', '0'], ['script', 'vif-bridge'],
['mac', '00:16:3e:10:93:a2']]], ['device', ['vbd', ['backend', '0'],
['dev', 'hda1'],
['uname', 'file:/var/vmmtest/rhel4u1_xenU-32.img'], ['mode', 'w']]],
['state', '-b----'],
['shutdown_reason', 'poweroff'], ['cpu_time', '4.943557536'],
['online_vcpus', '1'], ['up_time', '259.28576684'],
['start_time', '1137511507.66'], ['store_mfn', '33812'],
['console_mfn', '33811']]
[2006-01-17 10:29:31 xend.XendDomainInfo] DEBUG (XendDomainInfo:376)
parseConfig: result is {'ssidref':
0, 'uuid': 'd5fdf023-a70d-74b6-3f47-
efeefd6da1ef', 'on_crash': 'restart', 'on_reboot': 'restart', 'image':
['linux',
['kernel', '/boot/vmlinuz-2.6.12-xenU'], ['root', '/dev/hda1 ro'],
['args', '4']], 'on_poweroff': 'destroy', 'cpus':
None, 'name': 'ExampleDomain09', 'backend': [], 'vcpus': 1, 'cpu_weight':
1.0, 'vcpu_avail': 1, 'memory':
64, 'device': [('vif', ['vif', ['backend', '0'], ['script', 'vif-bridge'],
['mac', '00:16:3e:10:93:a2']]), ('vbd',
['vbd', ['backend', '0'], ['dev', 'hda1'],
['uname', 'file:/var/vmmtest/rhel4u1_xenU-32.img'],
['mode', 'w']])], 'bootloader': None, 'cpu': None, 'maxmem': 64}
[2006-01-17 10:29:31 xend.XendDomainInfo] DEBUG (XendDomainInfo:1130)
XendDomainInfo.construct: None 0
[2006-01-17 10:29:31 xend.XendDomainInfo] DEBUG (XendDomainInfo:663) Storing
VM details:
{'ssidref': '0', 'uuid': 'd5fdf023-a70d-74b6-3f47-
efeefd6da1ef', 'on_reboot': 'restart', 'image': "(linux
(kernel /boot/vmlinuz-2.6.12-xenU) (root '/dev/hda1 ro') (args
4))", 'on_poweroff': 'destroy', 'name': 'ExampleDomain09', 'vcpus': '1', 'vcpu_
avail': '1', 'memory': '64', 'on_crash':
'restart', 'maxmem': '64'}
[2006-01-17 10:29:31 xend] DEBUG (DevController:103) DevController: writing
{'backend-
id': '0', 'mac': '00:16:3e:10:93:a2', 'handle': '0', 'state': '1', 'backend': '
/local/domain/0/backend/vif/5/0'}
to /local/domain/5/device/vif/0.
[2006-01-17 10:29:31 xend] DEBUG (DevController:105) DevController: writing
{'mac': '00:16:3e:10:93:a2', 'state': '1', 'handle': '0', 'script': '/etc/xen/s
cripts/vif-bridge', 'frontend-
id': '5', 'domain': 'ExampleDomain09', 'frontend': '/local/domain/5/device/vif/
0'} to /local/domain/0/backend/vif/5/0.
[2006-01-17 10:29:31 xend] DEBUG (blkif:24) exception looking up device number
for hda1: [Errno 2] No such file or
directory: '/dev/hda1'
[2006-01-17 10:29:31 xend] DEBUG (DevController:105) DevController: writing
{'mac': '00:16:3e:10:93:a2', 'state': '1', 'handle': '0', 'script': '/etc/xen/s
cripts/vif-bridge', 'frontend-
id': '5', 'domain': 'ExampleDomain09', 'frontend': '/local/domain/5/device/vif/
0'} to /local/domain/0/backend/vif/5/0.
[2006-01-17 10:29:31 xend] DEBUG (blkif:24) exception looking up device number
for hda1: [Errno 2] No such file or
directory: '/dev/hda1'
[2006-01-17 10:29:31 xend] DEBUG (DevController:103) DevController: writing
{'virtual-device': '769', 'backend-
id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vbd/5/769'}
to /local/domain/5/device/vbd/769.
[2006-01-17 10:29:31 xend] DEBUG (DevController:105) DevController: writing
{'domain': 'ExampleDomain09', 'frontend': '/local/domain/5/device/vbd/769', 'de
v': 'hda1', 'state': '1', 'params': '/va
r/vmmtest/rhel4u1_xenU-32.img', 'mode': 'w', 'frontend-
id': '5', 'type': 'file'} to /local/domain/0/backend/vbd/5/769.
[2006-01-17 10:29:31 xend.XendDomainInfo] DEBUG (XendDomainInfo:688) Storing
domain details:
{'console/port': '2', 'name': 'ExampleDomain09', 'console/limit': '1048576', 'v
m': '/vm/d5fdf023-a70d-74b6-3f47-
efeefd6da1ef', 'domid': '5', 'cpu/0/availability': 'online', 'memory/target': '
65536', 'store/port': '1'}
[2006-01-17 10:29:31 xend] DEBUG (balloon:84) Balloon: free 1755; need 73;
done.
[2006-01-17 10:29:31 xend] DEBUG (XendCheckpoint:148)
[xc_restore]: /usr/lib/xen/bin/xc_restore 10 16 5 18432 1 2
[2006-01-17 10:29:32 xend] ERROR (XendCheckpoint:227) xc_linux_restore start:
max_pfn = 4800
[2006-01-17 10:29:32 xend] ERROR (XendCheckpoint:227) Could not get vcpu
context: 61
[2006-01-17 10:29:32 xend] ERROR (XendCheckpoint:227) Restore exit with rc=1
[2006-01-17 10:29:32 xend.XendDomainInfo] DEBUG (XendDomainInfo:1272)
XendDomainInfo.destroy: domid=5
[2006-01-17 10:29:32 xend.XendDomainInfo] DEBUG (XendDomainInfo:1280)
XendDomainInfo.destroyDomain(5)
[2006-01-17 10:29:32 xend.XendDomainInfo] ERROR (XendDomainInfo:1286)
XendDomainInfo.destroy: xc.domain_destroy failed.
Traceback (most recent call last):
File "/usr/lib/python/xen/xend/XendDomainInfo.py", line 1284, in
destroyDomain
xc.domain_destroy(self.domid)
error: (3, 'No such process')
[2006-01-17 10:29:32 xend] ERROR (XendDomain:266) Restore failed
Traceback (most recent call last):
File "/usr/lib/python/xen/xend/XendDomain.py", line 261, in domain_restore_fd
return XendCheckpoint.restore(self, fd)
File "/usr/lib/python/xen/xend/XendCheckpoint.py", line 152, in restore
forkHelper(cmd, fd, handler.handler, True)
File "/usr/lib/python/xen/xend/XendCheckpoint.py", line 218, in forkHelper
raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen/bin/xc_restore 10 16 5 18432 1 2 failed
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