HVM migration

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

Hi,

I just tried to migrate a HVM guest with Xen 3.3 and -current amd64 Dom0.
It failed in tools/libxc/xc_domain_save.c, line 1175.

This is the snippet from /var/log/xen/xend.log

[2009-03-06 14:06:57 377] DEBUG (XendCheckpoint:103) 
[xc_save]: /usr/pkg/bin/xc_save 4 1 0 0 4
[2009-03-06 14:06:58 377] INFO (XendCheckpoint:403) xc_save: could not read 
suspend event channel
[2009-03-06 14:06:58 377] INFO (XendCheckpoint:403) xc_save: suspend event 
channel initialization 
failed, using slow path
[2009-03-06 14:06:58 377] DEBUG (XendCheckpoint:374) suspend
[2009-03-06 14:06:58 377] DEBUG (XendCheckpoint:106) In saveInputHandler 
suspend
[2009-03-06 14:06:58 377] DEBUG (XendCheckpoint:108) Suspending 1 ...
[2009-03-06 14:06:58 377] DEBUG (XendDomainInfo:494) 
XendDomainInfo.shutdown(suspend)
[2009-03-06 14:06:58 377] INFO (XendDomainInfo:511) HVM save:remote shutdown 
dom 1!
[2009-03-06 14:06:58 377] DEBUG (XendDomainInfo:1443) 
XendDomainInfo.handleShutdownWatch
[2009-03-06 14:06:58 377] INFO (XendCheckpoint:114) Domain 1 suspended.
[2009-03-06 14:06:58 377] INFO (XendDomainInfo:1634) Domain has shutdown: 
name=migrating-slamd64 i
d=1 reason=suspend.
[2009-03-06 14:06:59 377] INFO (image:458) signalDeviceModel:restore dm state 
to running
[2009-03-06 14:06:59 377] DEBUG (XendCheckpoint:123) Written done
[2009-03-06 14:06:59 377] INFO (XendCheckpoint:403) Saving memory pages: iter 
1   0%ERROR Internal
 error: Error when writing to state file (2) (32 = Broken pipe)
[2009-03-06 14:06:59 377] INFO (XendCheckpoint:403) Save exit rc=1
[2009-03-06 14:06:59 377] ERROR (XendCheckpoint:157) Save failed on domain 
slamd64 (1) - resuming.
Traceback (most recent call last):
  File "usr/pkg/lib/python2.5/site-packages/xen/xend/XendCheckpoint.py", line 
125, in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "usr/pkg/lib/python2.5/site-packages/xen/xend/XendCheckpoint.py", line 
391, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/pkg/bin/xc_save 4 1 0 0 4 failed
[2009-03-06 14:06:59 377] DEBUG (XendDomainInfo:2458) 
XendDomainInfo.resumeDomain(1)
[2009-03-06 14:06:59 377] DEBUG (XendDomainInfo:2499) 
XendDomainInfo.resumeDomain: completed


Christoph