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# Date Author Comment
adc56dda 04/15/2011 11:14 pm Blue Swirl

migration: move some declarations to migration.h

Move a few migration related declarations to migration.h.

Signed-off-by: Blue Swirl <>

99a0db9b 01/24/2011 04:13 pm Gerd Hoffmann

add migration state change notifiers

This patch adds functions to register and unregister notifiers for
migration state changes and a function to query the migration state.
The notifier is called on every state change. Once after establishing a
new migration object (which is in active state then) and once when the...

8ca5e801 06/22/2010 11:15 pm Juan Quintela

Exit if incoming migration fails

Signed-off-by: Juan Quintela <>
Signed-off-by: Anthony Liguori <>

511c0231 06/22/2010 11:15 pm Juan Quintela

Factorize common migration incoming code

Signed-off-by: Juan Quintela <>
Signed-off-by: Anthony Liguori <>

41ef56e6 06/03/2010 10:55 pm Anthony Liguori

migration: respect exit status with exec:

This patch makes sure that if the exec: process exits with a non-zero return
status, we treat the migration as failed.

This fixes https://bugs.launchpad.net/qemu/+bug/391879

Signed-off-by: Anthony Liguori <>

b5d17adb 02/19/2010 11:18 pm Luiz Capitulino

Monitor: Convert do_migrate() to cmd_new_ret()

While there I'm also dropping a unneeded else clause (the last
one in the function).

Signed-off-by: Luiz Capitulino <>
Signed-off-by: Anthony Liguori <>

ef4b7eee 02/19/2010 11:18 pm Luiz Capitulino

Monitor: Convert simple handlers to cmd_new_ret()

The following handlers always succeed and hence can be converted
to cmd_new_ret() in the same commit.

- do_stop()
- do_quit()
- do_system_reset()
- do_system_powerdown()
- do_migrate_cancel()
- do_qmp_capabilities()...

5fd9083c 02/03/2010 08:36 pm Markus Armbruster

monitor: convert do_migrate_set_speed() to QObject

Signed-off-by: Markus Armbruster <>
Signed-off-by: Anthony Liguori <>

c6027f56 02/03/2010 08:36 pm Markus Armbruster

monitor: convert do_migrate_set_downtime() to QObject

Signed-off-by: Markus Armbruster <>
Signed-off-by: Anthony Liguori <>

13232b8f 12/19/2009 04:26 pm Anthony Liguori

Revert "monitor: Convert do_migrate_set_speed() to QObject"

This reverts commit 3a4921047d514c336531c304bec362c4d138ebcc.

From Luiz:

do_migrate_set_speed() accepts a suffix for the 'value' argument and this is
not good for QMP. We will have to add a new argument type to handle that and...
c86a6683 12/12/2009 03:59 pm Luiz Capitulino

migration: Convert do_info_migrate() to QObject

Return a QDict, which may contain up to more two QDicts, depending
on the type of migration we're performing.

IMPORTANT: as a QInt stores a int64_t integer, RAM values are going
to be stored as int64_t and not as uint64_t as they are today. If...

f327aa0c 12/03/2009 06:48 pm Jan Kiszka

live migration: Propagate output monitor to callback handler

In order to allow proper progress reporting to the monitor that
initiated the migration, forward the monitor reference through the
migration layer down to SaveLiveStateHandler.

Signed-off-by: Jan Kiszka <>...

c163b5ca 11/17/2009 04:49 pm lirans@il.ibm.com

Block live migration

This patch introduces block migration called during live migration. Block
are being copied to the destination in an async way. First the code will
transfer the whole disk and then transfer all dirty blocks accumulted during
the migration....

5f79da00 10/27/2009 07:28 pm Luiz Capitulino

monitor: Convert do_migrate() to QObject

Error is still directly printed, as we are only converting
regular output.

Signed-off-by: Luiz Capitulino <>
Signed-off-by: Anthony Liguori <>

3a492104 10/27/2009 07:28 pm Luiz Capitulino

monitor: Convert do_migrate_set_speed() to QObject

Signed-off-by: Luiz Capitulino <>
Signed-off-by: Anthony Liguori <>

911d2963 10/27/2009 07:28 pm Luiz Capitulino

monitor: Convert do_migrate_cancel() to QObject

Signed-off-by: Luiz Capitulino <>
Signed-off-by: Anthony Liguori <>

d54908a5 09/04/2009 05:37 pm Luiz Capitulino

monitor: Port handler_1 to use QDict

This commit ports command handlers that receive one argument to use
the new monitor's dictionary.

Signed-off-by: Luiz Capitulino <>
Signed-off-by: Anthony Liguori <>

f18c16de 09/04/2009 05:37 pm Luiz Capitulino

monitor: Port handler_2 to use QDict

This commit ports command handlers that receive two arguments to use
the new monitor's dictionary.

Signed-off-by: Luiz Capitulino <>
Signed-off-by: Anthony Liguori <>

f96fc8a0 09/04/2009 05:37 pm Luiz Capitulino

monitor: Port handler_0 to use QDict

This commit ports command handlers that receive no arguments to use
the new monitor's dictionary.

It might seem no sense to do this, as the handlers have no arguments,
but at the end of this porting work all handlers will have the same...

5ac1fad3 08/28/2009 03:33 am Paolo Bonzini

add file descriptor migration

Signed-off-by: Paolo Bonzini <>
Cc: Chris Lalancette <>
Signed-off-by: Anthony Liguori <>

4951f65b 08/24/2009 04:01 pm Chris Lalancette

Migration via unix sockets.

Implement migration via unix sockets. While you can fake this using
exec and netcat, this involves forking another process and is
generally not very nice. By doing this directly in qemu, we can avoid
the copy through the external nc command. This is useful for...

2ea42952 06/16/2009 11:52 pm Glauber Costa

set migration max downtime

provide a monitor command to allow one to set the maximum
downtime he is willing to suffer during migration, in seconds.
"ms", "us", "ns" and "s" are accepted as modifiers.

This parameter will be used by ram_save_live() code to determine...

a0a3fd60 06/16/2009 11:45 pm Glauber Costa

add non-arbitrary migration stop condition

Currently, we're entering migration's stage 3 when
a treshold of 10 pages remain to be transferred in the system.

This has hurt some users. However, any proposed threshold is
arbitrary by nature, and would only shift the annoyance....

731b0364 03/06/2009 01:01 am aliguori

monitor: Decouple terminals (Jan Kiszka)

Currently all registered (and activate) monitor terminals work in
broadcast mode: Everyone sees what someone else types on some other
terminal and what the monitor reports back. This model is broken when
you have a management monitor terminal that is automatically operated...

376253ec 03/06/2009 01:01 am aliguori

monitor: Rework API (Jan Kiszka)

Refactor the monitor API and prepare it for decoupled terminals:
term_print functions are renamed to monitor_* and all monitor services
gain a new parameter (mon) that will once refer to the monitor instance
the output is supposed to appear on. However, the argument remains...

1d6198c3 12/13/2008 11:32 am blueswir1

Remove unnecessary trailing newlines

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6000 c046a42c-6fe2-441c-8c8c-71466251a162

065e2813 11/11/2008 06:46 pm aliguori

Reintroduce migrate-to-exec: support (Charles Duffy)

KVM's live migration support included support for exec: URLs, allowing system
state to be written or received via an arbitrary popen()ed subprocess. This
provides a convenient way to pipe state through a compression algorithm or an...

34c9dd8e 10/13/2008 06:14 am aliguori

Introduce TCP live migration protocol

This patch introduces a tcp protocol for live migration. It can be used as
follows:

qemu-system-x86_64 -hda ~/images/linux-test.img -monitor stdio
<vm runs for a while>
(qemu) migrate tcp:localhost:1025

On the same system:...

5bb7910a 10/13/2008 06:12 am aliguori

Introduce UI for live migration

This patch introduces a command line parameter and monitor command for starting
a live migration. The next patch will provide an example of how to use these
parameters.

Signed-off-by: Anthony Liguori <>...