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* Add XBZRLE statisticsOrit Wasserman2012-08-081-0/+4
| | | | | | | | | | | Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: Petter Svard <petters@cs.umu.se> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com> Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* Add migration accounting for normal and duplicate pagesOrit Wasserman2012-08-081-0/+5
| | | | | | | | | | | Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: Petter Svard <petters@cs.umu.se> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com> Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* Add migrate_set_cache_size commandOrit Wasserman2012-08-081-0/+2
| | | | | | | | | | | | | | | | | Change XBZRLE cache size in bytes (the size should be a power of 2, it will be rounded down to the nearest power of 2). If XBZRLE cache size is too small there will be many cache miss. New query-migrate-cache-size QMP command and 'info migrate_cache_size' HMP command to query cache value. Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: Petter Svard <petters@cs.umu.se> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com> Signed-off-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* Add XBZRLE to ram_save_block and ram_save_liveOrit Wasserman2012-08-081-0/+4
| | | | | | | | | | | | | | | In the outgoing migration check to see if the page is cached and changed, then send compressed page by using save_xbrle_page function. In the incoming migration check to see if RAM_SAVE_FLAG_XBZRLE is set and decompress the page (by using load_xbrle function). Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: Petter Svard <petters@cs.umu.se> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com> Signed-off-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* Add xbzrle_encode_buffer and xbzrle_decode_buffer functionsOrit Wasserman2012-08-081-0/+4
| | | | | | | | | | | | | | | | For performance we are encoding long word at a time. For nzrun we use long-word-at-a-time NULL-detection tricks from strcmp(): using ((lword - 0x0101010101010101) & (~lword) & 0x8080808080808080) test to find out if any byte in the long word is zero. Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com> Signed-off-by: Petter Svard <petters@cs.umu.se> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com> Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* Add migration capabilitiesOrit Wasserman2012-08-081-0/+2
| | | | | | | | | | | | | The management can query the current migration capabilities using query-migrate-capabilities QMP command. The user can use 'info migrate_capabilities' HMP command. Currently only XBZRLE capability is available. Signed-off-by: Orit Wasserman <owasserm@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* savevm: Live migration handlers register the struct directlyJuan Quintela2012-07-201-2/+2
| | | | | | | Notice that the live migration users never unregister, so no problem about freeing the ops structure. Signed-off-by: Juan Quintela <quintela@redhat.com>
* Add spent time for migrationJuan Quintela2012-06-291-0/+1
| | | | | | | | | | We add time spent for migration to the output of "info migrate" command. 'total_time' means time since the start fo migration if migration is 'active', and total time of migration if migration is completed. As we are also interested in transferred ram when migration completes, adding all ram statistics Signed-off-by: Juan Quintela <quintela@redhat.com>
* Add MigrationParams structureIsaku Yamahata2012-06-291-2/+6
| | | | Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
* use inet_listen()/inet_connect() to support ipv6 migrationAmos Kong2012-05-101-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use help functions in qemu-socket.c for tcp migration, which already support ipv6 addresses. Currently errp will be set to UNDEFINED_ERROR when migration fails, qemu would output "migration failed: ...", and current user can see a message("An undefined error has occurred") in monitor. This patch changed tcp_start_outgoing_migration()/inet_connect() /inet_connect_opts(), socket error would be passed back, then current user can see a meaningful err message in monitor. Qemu will exit if listening fails, so output socket error to qemu stderr. For IPv6 brackets must be mandatory if you require a port. Referencing to RFC5952, the recommended format is: [2312::8274]:5200 test status: Successed listen side: qemu-kvm .... -incoming tcp:[2312::8274]:5200 client side: qemu-kvm ... (qemu) migrate -d tcp:[2312::8274]:5200 Signed-off-by: Amos Kong <akong@redhat.com> Reviewed-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* qapi: Convert migrateLuiz Capitulino2012-03-151-3/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | The migrate command is one of those commands where HMP and QMP completely mix up together. This made the conversion to the QAPI (which separates the command into QMP and HMP parts) a bit difficult. The first important change to be noticed is that this commit completes the removal of the Monitor object from migration code, started by the previous commit. Another important and tricky change is about supporting the non-detached mode. That is, if the user doesn't pass '-d' the migrate command will lock the monitor and will only release it when migration is finished. To support this in the new HMP command (hmp_migrate()), it is necessary to create a timer which runs every second and checks if the migration is still active. If it is, the timer callback will re-schedule itself to run one second in the future. If the migration has already finished, the monitor lock is released and the user can use it normally. All these changes should be transparent to the user. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* Purge migration of (almost) everything to do with monitorsLuiz Capitulino2012-03-151-1/+1
| | | | | | | | | | | | | | | | | The Monitor object is passed back and forth within the migration/savevm code so that it can print errors and progress to the user. However, that approach assumes a HMP monitor, being completely invalid in QMP. This commit drops almost every single usage of the Monitor object, all monitor_printf() calls have been converted into DPRINTF() ones. There are a few remaining Monitor objects, those are going to be dropped by the next commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* Merge remote-tracking branch 'stefanha/trivial-patches-next' into stagingAnthony Liguori2011-12-141-2/+0Star
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| * migration.h: remove incoming_expected declarationsIsaku Yamahata2011-12-141-2/+0Star
| | | | | | | | | | | | | | | | | | The variable is deleted by 1bcef683bf840a928d633755031ac572d5fdb851 So remove its declaration. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* | qapi: Convert migrate_set_speedLuiz Capitulino2011-12-061-2/+0Star
| | | | | | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* | qapi: Convert migrate_set_downtimeLuiz Capitulino2011-12-061-3/+0Star
| | | | | | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* | qapi: Convert migrate_cancelLuiz Capitulino2011-12-061-2/+0Star
|/ | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* migrate: add migration blockersAnthony Liguori2011-11-211-0/+15
| | | | | | | | | | | | | This lets different subsystems register an Error that is thrown whenever migration is attempted. This works nicely because it gracefully supports things like hotplug. Right now, if multiple errors are registered, only one of them is reported. I expect that for 1.1, we'll extend query-migrate to return all of the reasons why migration is disabled at any given point in time. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: add status query functionsGerd Hoffmann2011-10-251-0/+2
| | | | | | | Add migration_is_active and migration_has_failed functions to query migration state. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* migration: Make state definitions localJuan Quintela2011-10-201-8/+0Star
| | | | Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: Export a function that tells if the migration has finished correctlyJuan Quintela2011-10-201-1/+1
| | | | | | This will allow us to hide the state values. Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: Remove migration cancel() callbackJuan Quintela2011-10-201-1/+0Star
| | | | | | It is used only in one place Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: Remove get_status() accessorJuan Quintela2011-10-201-1/+0Star
| | | | | | | It is only used inside migration.c, and fields on that struct are accessed all around the place on that file. Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: Our release callback was just freeJuan Quintela2011-10-201-1/+0Star
| | | | | | | | | | | | We called it from a single place, and always with state != MIG_STATE_ACTIVE. Just remove the whole callback. For users of the notifier, notice that this is exactly the case where they don't care, we are just freeing the state from previous failed migration (it can't be a sucessful one, otherwise we would not be running on that machine in the first place). Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Introduce MIG_STATE_SETUPJuan Quintela2011-10-201-4/+7
| | | | | | | | Use MIG_STATE_ACTIVE only when migration has really started. Use this new state to setup migration parameters. Change defines for an anonymous struct. Signed-off-by: Juan Quintela <quintela@redhat.com>
* migration: move migrate_new to do_migrateJuan Quintela2011-10-201-27/+4Star
| | | | | | | | Once there, remove all parameters that don't need to be passed to *start_outgoing_migration() functions Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Make all posible migration functions staticJuan Quintela2011-10-201-12/+0Star
| | | | | | | I have to move two functions postions to avoid forward declarations Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Refactor MigrationState creationJuan Quintela2011-10-201-8/+3Star
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Rename FdMigrationState MigrationStateJuan Quintela2011-10-201-19/+19
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Fold MigrationState into FdMigrationStateJuan Quintela2011-10-201-18/+5Star
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Use FdMigrationState instead of MigrationState when possibleJuan Quintela2011-10-201-8/+8
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Make *start_outgoing_migration return FdMigrationStateJuan Quintela2011-10-201-4/+4
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: move some declarations to migration.hBlue Swirl2011-04-151-0/+9
| | | | | | Move a few migration related declarations to migration.h. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* add migration state change notifiersGerd Hoffmann2011-01-241-0/+5
| | | | | | | | | | 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 state changes from active to completed, canceled or error. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* Factorize common migration incoming codeJuan Quintela2010-06-221-0/+2
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Exit if incoming migration failsJuan Quintela2010-06-221-1/+1
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: respect exit status with exec:Anthony Liguori2010-06-031-1/+1
| | | | | | | | | 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 <aliguori@us.ibm.com>
* Monitor: Convert do_migrate() to cmd_new_ret()Luiz Capitulino2010-02-191-1/+1
| | | | | | | | While there I'm also dropping a unneeded else clause (the last one in the function). Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Monitor: Convert simple handlers to cmd_new_ret()Luiz Capitulino2010-02-191-4/+4
| | | | | | | | | | | | | | | | | 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() - do_migrate_set_speed() - do_migrate_set_downtime() Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: convert do_migrate_set_downtime() to QObjectMarkus Armbruster2010-02-031-1/+2
| | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: convert do_migrate_set_speed() to QObjectMarkus Armbruster2010-02-031-1/+1
| | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Revert "monitor: Convert do_migrate_set_speed() to QObject"Anthony Liguori2009-12-191-1/+1
| | | | | | | | | | | | 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 this will have to wait for 0.13. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* migration: Convert do_info_migrate() to QObjectLuiz Capitulino2009-12-121-1/+3
| | | | | | | | | | | | | | 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 this is a problem QInt will have to be changed. This commit should not change user output. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* live migration: Propagate output monitor to callback handlerJan Kiszka2009-12-031-5/+8
| | | | | | | | | 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 <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Block live migrationlirans@il.ibm.com2009-11-171-5/+15
| | | | | | | | | | | | | | | | | | | 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. Still need to improve transition from the iterative phase of migration to the end phase. For now transition will take place when all blocks transfered once, all the dirty blocks will be transfered during the end phase (guest is suspended). Changes from v4: - Global variabels moved to a global state structure allocated dynamically. - Minor coding style issues. - Poll block.c for tracking of dirty blocks instead of manage it here. Signed-off-by: Liran Schour <lirans@il.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: Convert do_migrate_cancel() to QObjectLuiz Capitulino2009-10-271-1/+1
| | | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: Convert do_migrate_set_speed() to QObjectLuiz Capitulino2009-10-271-1/+1
| | | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: Convert do_migrate() to QObjectLuiz Capitulino2009-10-271-1/+1
| | | | | | | | Error is still directly printed, as we are only converting regular output. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: Port handler_2 to use QDictLuiz Capitulino2009-09-041-1/+1
| | | | | | | | This commit ports command handlers that receive two arguments to use the new monitor's dictionary. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* monitor: Port handler_1 to use QDictLuiz Capitulino2009-09-041-2/+2
| | | | | | | | This commit ports command handlers that receive one argument to use the new monitor's dictionary. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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