migrate exec ignores exit status

[Nathan Baum]

Binary package hint: kvm

Using

  migrate "exec:cat > foo; false"

in the monitor results in the state of the VM being written to foo, as expected, and the VM then being stopped. This is surprising, as I think it stands to reason that in case of a failed migrate-exec process, which is what a non-zero exit status implies to me, the VM should continue.

== 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

[Dustin Kirkland  (kirkland)]

Well, I have reproduced this behavior in Lucid's qemu-kvm 0.12.3, so the report is still accurate.

I don't have a strong opinion on the desired behavior, though I can certainly see the bug reporter's point.

This bug is filed against the upstream QEMU project, so we'll defer to Upstream's decision on this feature. Thanks for the report.

[Dave Walker (davewalker)]

This is a bug and has been reported upstream, it is unlikely to be fixed at the distribution level and therefore anyone interested in working on this bug should contribute a patch to the upstream project. This will then filter down to Ubuntu when it is merged mainline. Marking "Won't Fix" against the Ubuntu package.

Thanks for reporting this bug.

[Anthony Liguori (anthony-codemonkey)]

The attached patch works for me with the posted test case.

[Thomas Huth (th-huth)]

Patch has been included here:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=41ef56e61153d7bd27d34a63463
So I assume this should be working now.