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Migration Pull request (20231020)

Browse source 
In this pull request:
 - disable analyze-migration on s390x (thomas)
 - Fix parse_ramblock() (peter)
 - start merging live update (steve)
 - migration-test support for using several binaries (fabiano)
 - multifd cleanups (fabiano)
 
 CI: https://gitlab.com/juan.quintela/qemu/-/pipelines/1042492801
 
 Please apply.
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Merge tag 'migration-20231020-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231020)

In this pull request:
- disable analyze-migration on s390x (thomas)
- Fix parse_ramblock() (peter)
- start merging live update (steve)
- migration-test support for using several binaries (fabiano)
- multifd cleanups (fabiano)

CI: https://gitlab.com/juan.quintela/qemu/-/pipelines/1042492801

Please apply.

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# gpg: Signature made Thu 19 Oct 2023 23:57:15 PDT
# gpg:                using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg:                 aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03  4B82 F487 EF18 5872 D723

* tag 'migration-20231020-pull-request' of https://gitlab.com/juan.quintela/qemu:
  tests/qtest: Don't print messages from query instances
  tests/qtest/migration: Allow user to specify a machine type
  tests/qtest/migration: Support more than one QEMU binary
  tests/qtest/migration: Set q35 as the default machine for x86_86
  tests/qtest/migration: Specify the geometry of the bootsector
  tests/qtest/migration: Define a machine for all architectures
  tests/qtest/migration: Introduce find_common_machine_version
  tests/qtest: Introduce qtest_resolve_machine_alias
  tests/qtest: Introduce qtest_has_machine_with_env
  tests/qtest: Allow qtest_get_machines to use an alternate QEMU binary
  tests/qtest: Introduce qtest_init_with_env
  tests/qtest: Allow qtest_qemu_binary to use a custom environment variable
  migration/multifd: Stop checking p->quit in multifd_send_thread
  migration: simplify notifiers
  migration: Fix parse_ramblock() on overwritten retvals
  migration: simplify blockers
  tests/qtest/migration-test: Disable the analyze-migration.py test on s390x

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-10-20 06:46:53 -07:00
commit 384dbdda94
44 changed files with 341 additions and 195 deletions
Download patch file Download diff file Expand all files Collapse all files

24
include/migration/blocker.h
View file

@ -17,19 +17,23 @@
/**
* @migrate_add_blocker - prevent migration from proceeding
*
* @reason - an error to be returned whenever migration is attempted
* @reasonp - address of an error to be returned whenever migration is attempted
*
* @errp - [out] The reason (if any) we cannot block migration right now.
*
* @returns - 0 on success, -EBUSY/-EACCES on failure, with errp set.
*
* *@reasonp is freed and set to NULL if failure is returned.
* On success, the caller must not free @reasonp, except by
* calling migrate_del_blocker.
*/
int migrate_add_blocker(Error *reason, Error **errp);
int migrate_add_blocker(Error **reasonp, Error **errp);
/**
* @migrate_add_blocker_internal - prevent migration from proceeding without
* only-migrate implications
*
* @reason - an error to be returned whenever migration is attempted
* @reasonp - address of an error to be returned whenever migration is attempted
*
* @errp - [out] The reason (if any) we cannot block migration right now.
*
@ -38,14 +42,20 @@ int migrate_add_blocker(Error *reason, Error **errp);
* Some of the migration blockers can be temporary (e.g., for a few seconds),
* so it shouldn't need to conflict with "-only-migratable". For those cases,
* we can call this function rather than @migrate_add_blocker().
*
* *@reasonp is freed and set to NULL if failure is returned.
* On success, the caller must not free @reasonp, except by
* calling migrate_del_blocker.
*/
int migrate_add_blocker_internal(Error *reason, Error **errp);
int migrate_add_blocker_internal(Error **reasonp, Error **errp);
/**
* @migrate_del_blocker - remove a blocking error from migration
* @migrate_del_blocker - remove a blocking error from migration and free it.
*
* @reason - the error blocking migration
* @reasonp - address of the error blocking migration
*
* This function frees *@reasonp and sets it to NULL.
*/
void migrate_del_blocker(Error *reason);
void migrate_del_blocker(Error **reasonp);
#endif

6
include/migration/misc.h
View file

@ -60,8 +60,10 @@ void migration_object_init(void);
void migration_shutdown(void);
bool migration_is_idle(void);
bool migration_is_active(MigrationState *);
void add_migration_state_change_notifier(Notifier *notify);
void remove_migration_state_change_notifier(Notifier *notify);
void migration_add_notifier(Notifier *notify,
void (*func)(Notifier *notifier, void *data));
void migration_remove_notifier(Notifier *notify);
void migration_call_notifiers(MigrationState *s);
bool migration_in_setup(MigrationState *);
bool migration_has_finished(MigrationState *);
bool migration_has_failed(MigrationState *);