From 60fd680193119e7e4d50eccff7b55a0aadc934ab Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Wed, 22 Sep 2021 12:20:08 -0400 Subject: migration: Add migrate_add_blocker_internal() An internal version that removes -only-migratable implications. It can be used for temporary migration blockers like dump-guest-memory. Reviewed-by: Marc-André Lureau Reviewed-by: Juan Quintela Signed-off-by: Peter Xu Signed-off-by: Juan Quintela --- include/migration/blocker.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/migration') diff --git a/include/migration/blocker.h b/include/migration/blocker.h index acd27018e9..9cebe2ba06 100644 --- a/include/migration/blocker.h +++ b/include/migration/blocker.h @@ -25,6 +25,22 @@ */ int migrate_add_blocker(Error *reason, Error **errp); +/** + * @migrate_add_blocker_internal - prevent migration from proceeding without + * only-migrate implications + * + * @reason - 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 on failure, with errp set. + * + * 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(). + */ +int migrate_add_blocker_internal(Error *reason, Error **errp); + /** * @migrate_del_blocker - remove a blocking error from migration * -- cgit v1.2.3-55-g7522