[Xen-users] Migration fails!!!

["andrea15@xxxxxx" <andrea15@xxxxxx>]

Hi all,
I'm having problem testing migration (live and regular).
I've 
activated a relocation server on both my machines (fisrt one is a 
fedora5, second one is a debian), chosen 8002 as relocation port and 
allowed connection from the Internet.
(xend-http-server yes)
#(xend-
unix-server yes)
(xend-relocation-server yes)
(xend-port 8000)
(xend-
relocation-port 8002)
(xend-address '')
#(xend-address localhost)
(xend-
relocation-address '')
(xend-relocation-hosts-allow '')
#(xend-
relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$')
etc.....
I rebooted my machines when edited xend-config.sxp.
My 
Machines are on the same L2 subnet and there are not route problem 
between them.
 
that's what prompts me when I try migrating:
[root@localhost fedora6]# xm migrate 13 143.225.229.137
Error: 
/usr/lib/xen/bin/xc_save 18 13 0 0 0 failed
Usage: xm migrate <Domain> 
<Host>

It seems a problem when saving VM state. However if I try with 
xm save I've no problem with it...I can also restore VM execution from 
the file generated with xm save.
Here is the xend.log:
[2007-07-18 08:
59:38 xend 3634] 
DEBUG (XendCheckpoint:83) [xc_save]:
/usr/lib/xen/bin/xc_save 18 13 0 0 0
[2007-07-18 08:59:39 xend 3634] 
DEBUG (XendCheckpoint:209) suspend
[2007-07-18 08:59:39 xend 3634] 
DEBUG (XendCheckpoint:86) In saveInputHandler suspend
[2007-07-18 08:
59: 39 xend 3634] 
DEBUG (XendCheckpoint:88) Suspending 13 ...
[2007-07-
18 08:59:39 xend.XendDomainInfo 3634] 
DEBUG (XendDomainInfo:933) 
XendDomainInfo.handleShutdownWatch
[2007-07-18 08:59:39 xend.
XendDomainInfo 3634] 
DEBUG (XendDomainInfo:933) XendDomainInfo.
handleShutdownWatch
[2007-07-18 08:59:39 xend.XendDomainInfo 3634] 
INFO (XendDomainInfo:892) Domain has shutdown: name=migrating-fedora6 
id=13 
reason=suspend.
[2007-07-18 08:59:39 xend 3634] 
INFO 
(XendCheckpoint: 93) Domain 13 suspended.
[2007-07-18 08:59:39 xend 
3634] 
DEBUG (XendCheckpoint:98) Written done
[2007-07-18 08:59:39 xend 
3634] 
ERROR (XendCheckpoint:236) Had 0 unexplained entries in p2m 
table
[2007-07-18 08:59:39 xend 3634] ERROR (XendCheckpoint:236) Saving 
memory pages: 
iter 1 0%Error when writing to state file (2): 32
[2007-
07-18 08:59: 39 xend 3634] 
ERROR (XendCheckpoint:236) Save exit rc=1
[2007-07-18 08: 59:39 xend 3634] 
ERROR (XendCheckpoint:106) Save 
failed on domain fedora6 (13).
Traceback (most recent call last): File 
"/usr/lib/python2.4/site-packages/xen/xend/XendCheckpoint.py", line 
100, in save
forkHelper(cmd, fd, saveInputHandler, False)
File 
"/usr/lib/python2.4/site-packages/xen/xend/XendCheckpoint.py",line 227, 
in forkHelper
raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen/bin/xc_save 18 13 0 0 0 failed

however, I 
haven't yet used a networked solution for my disk images.
they're 
stored on local hard disk.I wanted to be sure of my configuration 
before, facing the problem after.
So I don't expect migration 
successfully terminates, but at least begins...
But I don't think It's 
the reason for which migration fails...
Let me read good news!!!
Andrea 
Sibilia

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