[Qemu-discuss] Questions about "Fail to create ssh json backing image on a remote host"_qemu-kvm-rhev-2.9.0-8

[Yanqiu Zhang]

Hi,

On rhel7.4
qemu-kvm-rhev-2.9.0-8.el7.x86_64

If I try to create a ssh json backing image on a local host, e.g.hostB, will 
succeed.
But if I ssh to hostB first, then do the same operation, it will fail with 
error:
[otherhost]# ssh address@hidden
address@hidden create -f qcow2 -b 'json:{"file.driver":"ssh", 
"file.host":"ibm-x3850x6-03.lab.eng.pek2.redhat.com", "file.path":"/tmp/a", 
"file.user":"root", "file.port":22, "file.host_key_check":"no"}' 
/var/lib/libvirt/images/ssh.img
qemu-img: /var/lib/libvirt/images/ssh.img: failed to connect to ssh-agent: no 
auth sock variable (libssh2 error code: -39)

Is this a known issue or a bug?

Thanks.

Best Regards,
Yanqiu Zhang