[Qemu-devel] [Bug 589315] Re: qemu: Improve error reporting when migration can't connect

[Luiz Capitulino]

** Changed in: qemu
       Status: New => Confirmed

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qemu: Improve error reporting when migration can't connect
https://bugs.launchpad.net/bugs/589315
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Status in QEMU: Confirmed

Bug description:
Tested with upstream qemu as of Jun 3 2010

If the source qemu instance can't connect to the migration destination (say
there is no listening QEMU instance, or port is blocked by a firewall), all we
get is info migrate -> Migration status: failed. This is all we have to report
back to libvirt users if their firewall is misconfigured, which is crappy.

Ideally, if we can't connect, migration would fail immediately with a relevant
message and strerror(). More info from 'info migrate' would be nice too, no
idea how this will play with QMP though.

As a slightly related issue, try entering

migrate tcp:127.0.0.0:6000

We get a 'migration failed' error, and then the monitor hangs!