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

[Anthony Liguori]

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

** This bug has been marked a duplicate of bug 391879
   migrate exec ignores exit status

-- 
migrate exec hangs for several minutes if the pipe is closed before all its 
data is written
https://bugs.launchpad.net/bugs/391880
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Status in QEMU: New
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