[Bug 717929] Re: Serial communication between VMs problematic

[Thomas Huth <717929@bugs.launchpad.net>]

** Changed in: qemu
   Importance: Undecided => Wishlist

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https://bugs.launchpad.net/bugs/717929

Title:
  Serial communication between VMs problematic

Status in QEMU:
  New

Bug description:
  Hello,

  I want to setup serial communication between VM hosts but I have found
  it quite difficult...:

  ...because when trying unix sockets:

  - host A has serial device as unix socket (bind)
  - host B has serial device as client of unix socket
  - host A is down thus not unix socket does exist
  - host B can't be started because cannot read the socket:

  error: Failed to start domain opd1s02
  error: internal error Process exited while reading console log output: char device redirected to /dev/pts/0
  connect(unix:/tmp/test.sock): Connection refused
  chardev: opening backend "socket" failed

  Can that work like the cable is not plugged in? So host B can start
  and when the socket would exist it would connect to it?

  ...and when using pty and host device combination one cannot predict
  pty device under /dev/pts, it would be nice if would be possible to
  define exact device name.

  Tested on Fedora 14.

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