[Xen-bugs] [Bug 1754] New: xm migration failure for pv-ops domu

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1754

           Summary: xm migration failure for pv-ops domu
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Linux-pv_ops domU
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: emile@xxxxxxxxxxxx


Hi,

xm migration of dumu is hanging. Kernel does not crash, domu doesn't stop, but
migration fails.

Xen Hypervisor 4.0.1
Dom0 kernel version is linux-2.6.32.24
DomU kernel version xen-stable tree is 2.6.32.32

note: migration of older non-pvops domu's does work on the same machine.

Command issued:

# xm migrate blabla.lan otherhost

Dmesg on domu shows:
[  715.804201] xen suspend: dpm_suspend_start -22

xend.log on dom0 shows:

xc_save: failed to get the suspend evtchn port

more full dump of xend.log:

[2011-03-16 12:50:39 3866] DEBUG (DevController:95) DevController: writing
{'protocol': 'x86_64-abi', 'state': '1', 'backend-id': '0', 'backend':
'/local/domain/0/backend/console/166/0'} to /local/domain/166/device/console/0.
[2011-03-16 12:50:39 3866] DEBUG (DevController:97) DevController: writing
{'domain': 'blabla.lan', 'frontend': '/local/domain/166/device/console/0',
'uuid': 'd0dc4c28-c35e-d386-fe30-e1551dacde6c', 'frontend-id': '166', 'state':
'1', 'location': '2', 'online': '1', 'protocol': 'vt100'} to
/local/domain/0/backend/console/166/0.
[2011-03-16 12:50:39 3866] DEBUG (XendDomainInfo:1891)
XendDomainInfo.handleShutdownWatch
[2011-03-16 12:50:39 3866] DEBUG (DevController:628) hotplugStatusCallback
/local/domain/0/backend/vif/166/0/hotplug-status.
[2011-03-16 12:50:39 3866] DEBUG (DevController:642) hotplugStatusCallback 1.
[2011-03-16 12:50:39 3866] DEBUG (DevController:144) Waiting for 1.
[2011-03-16 12:50:39 3866] DEBUG (DevController:628) hotplugStatusCallback
/local/domain/0/backend/vif/166/1/hotplug-status.
[2011-03-16 12:50:39 3866] DEBUG (DevController:642) hotplugStatusCallback 1.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vkbd.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices
ioports.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices tap.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vif2.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices
console.
[2011-03-16 12:50:39 3866] DEBUG (DevController:144) Waiting for 0.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vscsi.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vbd.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices irq.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vfb.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices pci.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vusb.
[2011-03-16 12:50:39 3866] DEBUG (DevController:139) Waiting for devices vtpm.
[2011-03-16 12:51:13 3866] DEBUG (XendCheckpoint:124) [xc_save]:
/usr/lib/xen/bin/xc_save 37 166 0 0 1
[2011-03-16 12:51:13 3866] INFO (XendCheckpoint:423) xc_save: failed to get the
suspend evtchn port
[2011-03-16 12:51:13 3866] INFO (XendCheckpoint:423) 
[2011-03-16 12:51:13 3866] INFO (XendCheckpoint:423) Had 0 unexplained entries
in p2m table
 1: sent 129271, skipped 1801, delta 9388ms, dom0 78%, target 18%, sent
451Mb/s, dirtied 8Mb/s 2367 pages
 2: sent 2341, skipped 26, delta 177ms, dom0 85%, target 0%, sent 433Mb/s,
dirtied 14Mb/s 81 pages
 3: sent 81, skipped 0, delta 3ms, dom0 66%, target 0%, sent 884Mb/s, dirtied
0Mb/s 0 pages
 4: sent 0, skipped 0, Start last iterationoint:423) Saving memory pages: iter
4   0%
[2011-03-16 12:51:23 3866] DEBUG (XendCheckpoint:394) suspend
[2011-03-16 12:51:23 3866] DEBUG (XendCheckpoint:127) In saveInputHandler
suspend
[2011-03-16 12:51:23 3866] DEBUG (XendCheckpoint:129) Suspending 166 ...
[2011-03-16 12:51:23 3866] DEBUG (XendDomainInfo:519)
XendDomainInfo.shutdown(suspend)
[2011-03-16 12:51:23 3866] DEBUG (XendDomainInfo:1891)
XendDomainInfo.handleShutdownWatch
[2011-03-16 12:51:23 3866] DEBUG (XendDomainInfo:1891)
XendDomainInfo.handleShutdownWatch
[2011-03-16 13:02:35 3866] DEBUG (XendCheckpoint:124) [xc_save]:
/usr/lib/xen/bin/xc_save 41 166 0 0 0
[2011-03-16 13:02:35 3866] INFO (XendCheckpoint:423) xc_save: failed to get the
suspend evtchn port
[2011-03-16 13:02:35 3866] INFO (XendCheckpoint:423) 
[2011-03-16 13:02:35 3866] DEBUG (XendCheckpoint:394) suspend
[2011-03-16 13:02:35 3866] DEBUG (XendCheckpoint:127) In saveInputHandler
suspend
[2011-03-16 13:02:35 3866] DEBUG (XendCheckpoint:129) Suspending 166 ...
[2011-03-16 13:02:35 3866] DEBUG (XendDomainInfo:519)
XendDomainInfo.shutdown(suspend)
[2011-03-16 13:02:35 3866] DEBUG (XendDomainInfo:1891)
XendDomainInfo.handleShutdownWatch
[2011-03-16 13:02:35 3866] DEBUG (XendDomainInfo:1891)
XendDomainInfo.handleShutdownWatch


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