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[Qemu-devel] [PATCH 0/6] Refactor autostart of machines

From: Juan Quintela
Subject: [Qemu-devel] [PATCH 0/6] Refactor autostart of machines
Date: Wed, 19 Aug 2009 04:07:43 +0200

        This series add several things:
- delay sighandler_setup().  Current code hangs until you are using
  telnet:....,server for instance.  With this change, ^C while waiting
  for telnet program to conect will kill the vm.

- refactor autostart behaviour:
  * incoming migration: depend of -S parameter
  * loadvm from command line: depend of -S parameter
  * loadvm from monitor: same state that the vm it replaces
  * no loadvm no incoming: depend of -S parameter
  I tested, and all combinations works this way.

- refactor do_loadvm().  do_loadvm() don't return errors, if there were
  any error while loading a vm, it would obey autostart value independently of
  the errors.  Now it will never start a vm that had erros while loading.

- if you type "cont" in the monitor of one machine just migrated, qemu will
  proceed with the start, with the consequent corruption.  Last patch forbides
  to continue a vm that has just been migrated with an error message.  If you
  load a new vm, flag is reset.  This "bug/feature" was reported as a bug
  by users.

One comment:
- Is there really a good idea to allow loadvm in the monitor even if the current
  vm is running?  I think that allowing loadvm command to only works when vm is
  stopped is a better idea.  what does everybody else thinks?


Later, Juan.

Juan Quintela (6):
  Delay sighandler_setup()
  We want to autostart on incoming conections Once there, indent
    surrounded code in qemu style
  split do_loadvm() into do_loadvm() and load_vmstate()
  move do_loadvm() to monitor.c
  make load_vmstate() return errors
  Continue a migrated vm is a bad idea

 migration.c |    1 +
 monitor.c   |   16 ++++++++++++++++
 savevm.c    |   19 +++++++------------
 sysemu.h    |    3 ++-
 vl.c        |   24 +++++++++++++-----------
 5 files changed, 39 insertions(+), 24 deletions(-)

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