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-   -   XEN migration (http://www.howtoforge.com/forums/showthread.php?t=41012)

asdfg123 15th November 2009 19:18

XEN migration
 
Hello,

I have two server, the first is primary and the second one is backup.
All DomU is 32bit.
Migrate between 64bit and 64bit servers work, also between 32bit and 32bit. Configuration is thus OK.

When I migrate from 64bit to 32bit, i have problem, this is error

Code:

xm migrate --live test 192.168.1.2
Error: /usr/lib/xen-3.2-1/bin/xc_save 24 66 0 0 1 failed
Usage: xm migrate <Domain> <Host>

http://ubuntuforums.org/showthread.php?t=1298022

Migrate a domain to another machine.

Options:

-h, --help          Print this help.
-l, --live          Use live migration.
-p=portnum, --port=portnum
                    Use specified port for migration.
-r=MBIT, --resource=MBIT
                    Set level of resource usage for migration.

Error: /usr/lib/xen-3.2-1/bin/xc_save 24 66 0 0 1 failed

http://ubuntuforums.org/showthread.php?t=1298022

falko 16th November 2009 13:13

Any errors in your logs?

asdfg123 16th November 2009 13:56

Code:

[2009-11-15 13:45:52 26334] DEBUG (balloon:132) Balloon: 1612 KiB free; need 1024; done.
[2009-11-15 13:45:52 26334] DEBUG (XendCheckpoint:91) [xc_save]: /usr/lib/xen-3.2-1/bin/xc_save 4 16 0 0 1
[2009-11-15 13:45:52 26334] INFO (XendCheckpoint:373) Had 0 unexplained entries in p2m table
[2009-11-15 13:45:53 26334] INFO (XendCheckpoint:373) Saving memory pages: iter 1  0%ERROR Internal error: Error when writing to state file (5) (errno 104)
[2009-11-15 13:45:53 26334] INFO (XendCheckpoint:373) Save exit rc=1
[2009-11-15 13:45:53 26334] ERROR (XendCheckpoint:144) Save failed on domain test (16).
Traceback (most recent call last):
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendCheckpoint.py", line 112, in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendCheckpoint.py", line 361, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen-3.2-1/bin/xc_save 4 16 0 0 1 failed

This is migration from 32bit Dom0 to 64bit Dom0, the installed system is 32bit debian lenny.
xm_save works correct.


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