Hi, all

I migrate a vm from source host to the destination host. 

I am sure every part is ok for migration.

1   Create the  image in the destination and change the user and group.

2   Open TCP socket in the destination host. 

and I migrate in the source host command line.   

$ virsh migrate --live --copy-storage-all vmubuntu  qemu+ssh://destinationHost/system --verbose

But I get the  error

"error: operation failed : failed to retrieve chardev info inqemu with 'info chardev'" 

In the destination I find in the vmubuntu.log  

The error is 

"Migration failed. Exit code tcp:0.0.0.0:49170(-98),exiting."

What can I do to solve it ? 
I do not understand how the error comes.
Anyone can help me ?
Thanks in advance.