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https://gitlab.com/qemu-project/qemu
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dc62395557
Introduce migration dirty-limit capability, which can be turned on before live migration and limit dirty page rate durty live migration. Introduce migrate_dirty_limit function to help check if dirty-limit capability enabled during live migration. Meanwhile, refactor vcpu_dirty_rate_stat_collect so that period can be configured instead of hardcoded. dirty-limit capability is kind of like auto-converge but using dirty limit instead of traditional cpu-throttle to throttle guest down. To enable this feature, turn on the dirty-limit capability before live migration using migrate-set-capabilities, and set the parameters "x-vcpu-dirty-limit-period", "vcpu-dirty-limit" suitably to speed up convergence. Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com> Acked-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <168618975839.6361.17407633874747688653-4@git.sr.ht> Signed-off-by: Juan Quintela <quintela@redhat.com>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
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* QEMU migration capabilities
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*
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* Copyright (c) 2012-2023 Red Hat Inc
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*
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* Authors:
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* Orit Wasserman <owasserm@redhat.com>
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* Juan Quintela <quintela@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_MIGRATION_OPTIONS_H
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#define QEMU_MIGRATION_OPTIONS_H
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#include "hw/qdev-properties.h"
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#include "hw/qdev-properties-system.h"
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/* migration properties */
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extern Property migration_properties[];
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/* capabilities */
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bool migrate_auto_converge(void);
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bool migrate_background_snapshot(void);
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bool migrate_block(void);
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bool migrate_colo(void);
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bool migrate_compress(void);
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bool migrate_dirty_bitmaps(void);
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bool migrate_dirty_limit(void);
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bool migrate_events(void);
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bool migrate_ignore_shared(void);
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bool migrate_late_block_activate(void);
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bool migrate_multifd(void);
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bool migrate_pause_before_switchover(void);
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bool migrate_postcopy_blocktime(void);
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bool migrate_postcopy_preempt(void);
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bool migrate_postcopy_ram(void);
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bool migrate_rdma_pin_all(void);
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bool migrate_release_ram(void);
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bool migrate_return_path(void);
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bool migrate_switchover_ack(void);
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bool migrate_validate_uuid(void);
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bool migrate_xbzrle(void);
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bool migrate_zero_blocks(void);
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bool migrate_zero_copy_send(void);
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/*
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* pseudo capabilities
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*
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* These are functions that are used in a similar way to capabilities
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* check, but they are not a capability.
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*/
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bool migrate_multifd_flush_after_each_section(void);
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bool migrate_postcopy(void);
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bool migrate_tls(void);
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/* capabilities helpers */
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bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp);
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bool migrate_cap_set(int cap, bool value, Error **errp);
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/* parameters */
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const BitmapMigrationNodeAliasList *migrate_block_bitmap_mapping(void);
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bool migrate_has_block_bitmap_mapping(void);
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bool migrate_block_incremental(void);
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uint32_t migrate_checkpoint_delay(void);
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int migrate_compress_level(void);
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int migrate_compress_threads(void);
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int migrate_compress_wait_thread(void);
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uint8_t migrate_cpu_throttle_increment(void);
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uint8_t migrate_cpu_throttle_initial(void);
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bool migrate_cpu_throttle_tailslow(void);
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int migrate_decompress_threads(void);
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uint64_t migrate_downtime_limit(void);
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uint8_t migrate_max_cpu_throttle(void);
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uint64_t migrate_max_bandwidth(void);
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uint64_t migrate_max_postcopy_bandwidth(void);
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int migrate_multifd_channels(void);
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MultiFDCompression migrate_multifd_compression(void);
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int migrate_multifd_zlib_level(void);
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int migrate_multifd_zstd_level(void);
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uint8_t migrate_throttle_trigger_threshold(void);
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const char *migrate_tls_authz(void);
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const char *migrate_tls_creds(void);
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const char *migrate_tls_hostname(void);
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uint64_t migrate_xbzrle_cache_size(void);
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/* parameters setters */
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void migrate_set_block_incremental(bool value);
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/* parameters helpers */
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bool migrate_params_check(MigrationParameters *params, Error **errp);
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void migrate_params_init(MigrationParameters *params);
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void block_cleanup_parameters(void);
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#endif
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