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qemu/migration
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Li Zhijian baa41af1c0 migration: Prioritize RDMA in ram_save_target_page() 
Address an error in RDMA-based migration by ensuring RDMA is prioritized
when saving pages in `ram_save_target_page()`.

Previously, the RDMA protocol's page-saving step was placed after other
protocols due to a refactoring in commit bc38dc2f5f. This led to migration
failures characterized by unknown control messages and state loading errors
destination:
(qemu) qemu-system-x86_64: Unknown control message QEMU FILE
qemu-system-x86_64: error while loading state section id 1(ram)
qemu-system-x86_64: load of migration failed: Operation not permitted
source:
(qemu) qemu-system-x86_64: RDMA is in an error state waiting migration to abort!
qemu-system-x86_64: failed to save SaveStateEntry with id(name): 1(ram): -1
qemu-system-x86_64: rdma migration: recv polling control error!
qemu-system-x86_64: warning: Early error. Sending error.
qemu-system-x86_64: warning: rdma migration: send polling control error

RDMA migration implemented its own protocol/method to send pages to
destination side, hand over to RDMA first to prevent pages being saved by
other protocol.

Fixes: bc38dc2f5f ("migration: refactor ram_save_target_page functions")
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Message-ID: <20250305062825.772629-2-lizhijian@fujitsu.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
2025-03-10 12:09:24 -03:00
..
block-active.c migration/block-active: Remove global active flag 2025-02-06 14:26:51 +01:00
block-dirty-bitmap.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
channel-block.c io: follow coroutine AioContext in qio_channel_yield() 2023-09-07 20:32:11 -05:00
channel-block.h migration: introduce a QIOChannel impl for BlockDriverState VMState 2022-06-22 19:33:43 +01:00
channel.c migration: Fix hang after error in destination setup phase 2025-02-14 15:19:05 -03:00
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-stubs.c migration/colo: make colo_incoming_co() return void 2024-05-22 17:34:31 -03:00
colo.c migration: Add MIG_CMD_SWITCHOVER_START and its load handler 2025-03-06 06:47:33 +01:00
cpr-transfer.c migration: cpr-transfer save and load 2025-01-29 11:43:05 -03:00
cpr.c migration: use parameters.mode in cpr_state_save 2025-02-14 15:19:06 -03:00
cpu-throttle.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
dirtyrate.c qapi: Move include/qapi/qmp/ to include/qobject/ 2025-02-10 15:33:16 +01:00
dirtyrate.h include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
exec.c migration: simplify exec migration functions 2024-03-04 07:12:40 +01:00
exec.h migration: convert exec backend to accept MigrateAddress. 2023-11-02 11:35:04 +01:00
fd.c migration: Allow pipes to keep working for fd migrations 2024-11-25 16:21:55 -05:00
fd.h migration: Revert mapped-ram multifd support to fd: URI 2024-03-22 12:12:08 -04:00
file.c migration/multifd: Pass in MultiFDPages_t to file_write_ramblock_iov 2024-09-03 16:24:35 -03:00
file.h migration/multifd: Pass in MultiFDPages_t to file_write_ramblock_iov 2024-09-03 16:24:35 -03:00
global_state.c include: Rename sysemu/ -> system/ 2024-12-20 17:44:56 +01:00
meson.build migration/multifd: Device state transfer support - send side 2025-03-06 06:47:33 +01:00
migration-hmp-cmds.c migration: Add MIG_CMD_SWITCHOVER_START and its load handler 2025-03-06 06:47:33 +01:00
migration-stats.c migration: migration_rate_limit_reset() don't need the QEMUFile 2023-10-31 08:44:33 +01:00
migration-stats.h migration: Remove transferred atomic counter 2023-10-31 08:44:33 +01:00
migration.c migration: Fix UAF for incoming migration on MigrationState 2025-03-10 12:09:24 -03:00
migration.h migration: Add thread pool of optional load threads 2025-03-06 06:47:33 +01:00
multifd-device-state.c migration: Add save_live_complete_precopy_thread handler 2025-03-06 06:47:33 +01:00
multifd-nocomp.c migration/multifd: Make MultiFDSendData a struct 2025-03-06 06:47:33 +01:00
multifd-qatzip.c multifd: bugfix for incorrect migration data with qatzip compression 2025-01-09 17:40:27 -03:00
multifd-qpl.c multifd: bugfix for incorrect migration data with QPL compression 2025-01-09 17:40:21 -03:00
multifd-uadk.c migration/multifd: Fix compile error caused by page_size usage 2025-01-09 17:37:50 -03:00
multifd-zero-page.c migration/multifd: Move pages accounting into multifd_send_zero_page_detect() 2024-09-03 16:24:35 -03:00
multifd-zlib.c migration/multifd: Make MultiFDMethods const 2024-09-03 16:24:36 -03:00
multifd-zstd.c migration/multifd: Fix loop conditions in multifd_zstd_send_prepare and multifd_zstd_recv 2024-09-18 14:27:24 -04:00
multifd.c migration/multifd: Make MultiFDSendData a struct 2025-03-06 06:47:33 +01:00
multifd.h migration/multifd: Make MultiFDSendData a struct 2025-03-06 06:47:33 +01:00
options.c migration: Add MIG_CMD_SWITCHOVER_START and its load handler 2025-03-06 06:47:33 +01:00
options.h migration: Use device_class_set_props_n 2024-12-19 19:33:37 +01:00
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 overcommit: introduce mem-lock=on-fault 2025-02-12 11:36:13 -05:00
postcopy-ram.h migration/postcopy: Add postcopy-recover-setup phase 2024-06-21 09:47:59 -03:00
qemu-file.c migration: SCM_RIGHTS for QEMUFile 2025-01-29 11:43:05 -03:00
qemu-file.h migration/qemu-file: Define g_autoptr() cleanup function for QEMUFile 2025-03-06 06:47:34 +01:00
ram.c migration: Prioritize RDMA in ram_save_target_page() 2025-03-10 12:09:24 -03:00
ram.h migration/ram: Move RAM_SAVE_FLAG* into ram.h 2025-01-09 17:38:15 -03:00
rdma.c migration: Change migrate_fd_ to migration_ 2025-02-14 15:19:05 -03:00
rdma.h migration/ram: Move RAM_SAVE_FLAG* into ram.h 2025-01-09 17:38:15 -03:00
savevm.c migration: ram block cpr blockers 2025-03-10 12:09:24 -03:00
savevm.h migration: Add thread pool of optional load threads 2025-03-06 06:47:33 +01:00
socket.c migration: Remove unused socket_send_channel_create_sync 2024-10-08 15:28:55 -04:00
socket.h migration: Remove unused socket_send_channel_create_sync 2024-10-08 15:28:55 -04:00
target.c migration: Add migration prefix to functions in target.c 2023-09-11 08:34:06 +02:00
threadinfo.c migration/multifd: Protect accesses to migration_threads 2023-07-26 10:55:56 +02:00
threadinfo.h migration/multifd: Protect accesses to migration_threads 2023-07-26 10:55:56 +02:00
tls.c migration/multifd: Terminate the TLS connection 2025-02-14 15:19:04 -03:00
tls.h migration/multifd: Terminate the TLS connection 2025-02-14 15:19:04 -03:00
trace-events migration: Add MIG_CMD_SWITCHOVER_START and its load handler 2025-03-06 06:47:33 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmstate-types.c migration: cpr-transfer mode 2025-01-29 11:56:24 -03:00
vmstate.c qapi: Move include/qapi/qmp/ to include/qobject/ 2025-02-10 15:33:16 +01:00
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 migration/yank: Use channel features 2024-01-29 11:02:12 +08:00
yank_functions.h migration: Move the yank unregister of channel_close out 2021-07-26 12:45:03 +01:00