[Bug 391880] Re: migrate exec hangs for several minutes if the pipe is closed before all its data is written

[Thomas Huth]

*** This bug is a duplicate of bug 391879 ***
    https://bugs.launchpad.net/bugs/391879

** No longer affects: qemu

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https://bugs.launchpad.net/bugs/391880

Title:
  migrate exec hangs for several minutes if the pipe is closed before
  all its data is written

Status in qemu-kvm package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: kvm

  Using

    migrate "exec:true"

  in the monitor hangs the VM for several minutes. What I expect is that
  the VM stops attempting to migrate after the pipe has been closed.

  Indicating a background migrate with -d doesn't help. Presumably the
  migration is not backgrounded until a certain amount of data is
  written to the pipe, or the migration times out. What I expect is that
  the migration is backgrounded immediately.

  == Version information

  $ lsb_release -rd
  Description: Ubuntu 9.04
  Release: 9.04

  $ apt-cache policy kvm
  kvm:
    Installed: 1:84+dfsg-0ubuntu11
    Candidate: 1:84+dfsg-0ubuntu11
    Version table:
   *** 1:84+dfsg-0ubuntu11 0
          500 http://gb.archive.ubuntu.com jaunty/main Packages
          100 /var/lib/dpkg/status

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