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Re: [libvirt] tunnelled migration with libvirt 0.9.0

On Wed, Apr 20, 2011 at 07:06:33AM -0600, Eric Blake wrote:
> On 04/20/2011 05:13 AM, Jason Krieg wrote:
> > that was my first guess but it does not work the remote monitor socket
> > does not show up
> > 
> > libvirt is running as root so it should not be a permission problem
> > 
> > qemuMonitorOpenUnix:289 : monitor socket did not show up.: Connection
> > refused
> > qemuProcessWaitForMonitor:1059 : internal error process exited while
> > connecting to monitor: Migration failed. Exit code fd:14(-22), exiting.
> Exit code fd:14(-22) is EBADF on fd 14; I've seen it in the past when we
> were incorrectly leaving FD_CLOEXEC set on fd 14, but I don't see how
> that would be possible in the code path for qemuMigrationPrepareTunnel.

The problem is that '-incoming fd:NNN' wants a file descriptor
*read* from, but we're passing it the *write* end of the pipe.

Thus fopen(fd, "rb") fails with EINVAL

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