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qemu/migration
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Avihai Horon 1b4adb10f8 migration: Implement switchover ack logic 
Implement switchover ack logic. This prevents the source from stopping
the VM and completing the migration until an ACK is received from the
destination that it's OK to do so.

To achieve this, a new SaveVMHandlers handler switchover_ack_needed()
and a new return path message MIG_RP_MSG_SWITCHOVER_ACK are added.

The switchover_ack_needed() handler is called during migration setup in
the destination to check if switchover ack is used by the migrated
device.

When switchover is approved by all migrated devices in the destination
that support this capability, the MIG_RP_MSG_SWITCHOVER_ACK return path
message is sent to the source to notify it that it's OK to do
switchover.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Tested-by: YangHang Liu <yanghliu@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2023-06-30 06:02:51 +02:00
..
block-dirty-bitmap.c migration: Move rate_limit_max and rate_limit_used to migration_stats 2023-05-18 18:40:51 +02:00
block.c migration: Move rate_limit_max and rate_limit_used to migration_stats 2023-05-18 18:40:51 +02:00
block.h migration: disable auto-converge during bulk block migration 2017-09-27 11:27:14 +01:00
channel-block.c io: Add support for MSG_PEEK for socket channel 2023-02-06 19:22:56 +01:00
channel-block.h migration: introduce a QIOChannel impl for BlockDriverState VMState 2022-06-22 19:33:43 +01:00
channel.c migration: check magic value for deciding the mapping of channels 2023-02-06 19:22:57 +01:00
channel.h migration: check magic value for deciding the mapping of channels 2023-02-06 19:22:57 +01:00
colo-failover.c migration/colo: Improve an x-colo-lost-heartbeat error message 2023-02-23 14:10:17 +01:00
colo.c migration: process_incoming_migration_co(): move colo part to colo 2023-05-18 18:40:51 +02:00
dirtyrate.c migration: Add last stage indicator to global dirty log 2023-05-18 08:53:50 +02:00
dirtyrate.h migration/dirtyrate: Refactor dirty page rate calculation 2022-07-20 12:15:08 +01:00
exec.c *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
exec.h migration: Export exec.c functions in its own file 2017-06-01 18:49:22 +02:00
fd.c bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
fd.h migration: Fix fd protocol for incoming defer 2019-06-05 12:43:55 +02:00
global_state.c migration: never fail in global_state_store() 2023-06-02 01:03:19 +02:00
meson.build meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
migration-hmp-cmds.c build: move COLO under CONFIG_REPLICATION 2023-05-10 18:48:11 +02:00
migration-stats.c migration: We don't need the field rate_limit_used anymore 2023-05-18 18:40:51 +02:00
migration-stats.h migration: We don't need the field rate_limit_used anymore 2023-05-18 18:40:51 +02:00
migration.c migration: Implement switchover ack logic 2023-06-30 06:02:51 +02:00
migration.h migration: Implement switchover ack logic 2023-06-30 06:02:51 +02:00
multifd-zlib.c migration: Move parameters functions to option.c 2023-04-24 15:01:46 +02:00
multifd-zstd.c migration: Move parameters functions to option.c 2023-04-24 15:01:46 +02:00
multifd.c bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
multifd.h multifd: Add the ramblock to MultiFDRecvParams 2023-05-10 18:48:11 +02:00
options.c migration: Add switchover ack capability 2023-06-30 06:02:51 +02:00
options.h migration: Add switchover ack capability 2023-06-30 06:02:51 +02:00
page_cache.c migration: Fix cache_init()'s "Failed to allocate" error messages 2021-02-08 11:19:51 +00:00
page_cache.h migration: Clean up signed vs. unsigned XBZRLE cache-size 2021-02-08 11:19:51 +00:00
postcopy-ram.c migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
postcopy-ram.h migration: Allow postcopy_ram_supported_by_host() to report err 2023-04-27 10:18:25 +02:00
qemu-file.c migration: We don't need the field rate_limit_used anymore 2023-05-18 18:40:51 +02:00
qemu-file.h migration: Move rate_limit_max and rate_limit_used to migration_stats 2023-05-18 18:40:51 +02:00
ram-compress.c ram-compress.c: Make target independent 2023-05-08 15:25:26 +02:00
ram-compress.h ram.c: Move core decompression code into its own file 2023-05-08 15:25:26 +02:00
ram.c exec/memory: Introduce RAM_NAMED_FILE flag 2023-06-13 11:28:58 +02:00
ram.h ram: Add public helper to set colo bitmap 2023-05-10 18:48:11 +02:00
rdma.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
rdma.h migration: Export rdma.c functions in its own file 2017-06-01 18:49:23 +02:00
savevm.c migration: Implement switchover ack logic 2023-06-30 06:02:51 +02:00
savevm.h migration: Implement switchover ack logic 2023-06-30 06:02:51 +02:00
socket.c migration: Move migrate_use_zero_copy_send() to options.c 2023-04-24 15:01:46 +02:00
socket.h migration: Postcopy preemption preparation on channel creation 2022-07-20 12:15:08 +01:00
target.c migration: fix populate_vfio_info 2023-03-16 16:07:07 +01:00
threadinfo.c migration: Introduce interface query-migrationthreads 2023-02-06 19:22:57 +01:00
threadinfo.h migration: Introduce interface query-migrationthreads 2023-02-06 19:22:57 +01:00
tls.c migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
tls.h migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
trace-events migration: Implement switchover ack logic 2023-06-30 06:02:51 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmstate-types.c Move CPU softfloat unions to cpu-float.h 2022-04-06 14:31:43 +02:00
vmstate.c qemu-file: Remove total from qemu_file_total_transferred_*() 2023-05-15 13:46:14 +02:00
xbzrle.c migration/xbzrle: Use i386 host/cpuinfo.h 2023-05-23 16:51:18 -07:00
xbzrle.h migration/xbzrle: Use i386 host/cpuinfo.h 2023-05-23 16:51:18 -07:00
yank_functions.c bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
yank_functions.h migration: Move the yank unregister of channel_close out 2021-07-26 12:45:03 +01:00