[Xen-users] migration error between different xen versions

[Ming Chen <kingming0811@xxxxxxxxx>]

Hello, I am a newbie in xen. I got a problem for migration. Could anybody give me some help? I have two servers: one is with xen 3.1 and the other is with xen 3.4. I can migrate a vm from the server with xen 3.1 to the one with xen 3.4. However, when I try the reverse, I got an error like: 

Error: /usr/lib/xen/bin/xc_save 38 2 0 0 1 failed
Usage: xm migrate <Domain> <Host>

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.
-n=nodenum, --node=nodenum
                     Use specified NUMA node on target.
-s, --ssl            Use ssl connection for migration.

Is it the problem of different versions? I am using Fedora 8. Thank you.

Ming
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