diff options
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2021-02-02 13:55:21 +0000 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2021-02-08 11:19:51 +0000 |
| commit | 3af8554bd068576b0399087583df48518a2a98f6 (patch) | |
| tree | 46a40a36e03b4201ba562180e5ec2f581fe5be02 /migration | |
| parent | 54270c450adf403e4a5945210fe99009d5f85e91 (diff) | |
migration: Add blocker information
Modify query-migrate so that it has a flag indicating if outbound
migration is blocked, and if it is a list of reasons.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20210202135522.127380-2-dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/migration.c | 25 | ||||
| -rw-r--r-- | migration/savevm.c | 13 | ||||
| -rw-r--r-- | migration/savevm.h | 1 |
3 files changed, 37 insertions, 2 deletions
diff --git a/migration/migration.c b/migration/migration.c index 38efaeee94..a5ddf43559 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -174,6 +174,8 @@ INITIALIZE_MIGRATE_CAPS_SET(check_caps_background_snapshot, static MigrationState *current_migration; static MigrationIncomingState *current_incoming; +static GSList *migration_blockers; + static bool migration_object_check(MigrationState *ms, Error **errp); static int migration_maybe_pause(MigrationState *s, int *current_active_state, @@ -1074,6 +1076,27 @@ static void fill_source_migration_info(MigrationInfo *info) { MigrationState *s = migrate_get_current(); + info->blocked = migration_is_blocked(NULL); + info->has_blocked_reasons = info->blocked; + info->blocked_reasons = NULL; + if (info->blocked) { + GSList *cur_blocker = migration_blockers; + + /* + * There are two types of reasons a migration might be blocked; + * a) devices marked in VMState as non-migratable, and + * b) Explicit migration blockers + * We need to add both of them here. + */ + qemu_savevm_non_migratable_list(&info->blocked_reasons); + + while (cur_blocker) { + QAPI_LIST_PREPEND(info->blocked_reasons, + g_strdup(error_get_pretty(cur_blocker->data))); + cur_blocker = g_slist_next(cur_blocker); + } + } + switch (s->state) { case MIGRATION_STATUS_NONE: /* no migration has happened ever */ @@ -2025,8 +2048,6 @@ void migrate_init(MigrationState *s) s->threshold_size = 0; } -static GSList *migration_blockers; - int migrate_add_blocker(Error *reason, Error **errp) { if (only_migratable) { diff --git a/migration/savevm.c b/migration/savevm.c index d5bf53388f..1178c6ca90 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1154,6 +1154,19 @@ bool qemu_savevm_state_blocked(Error **errp) return false; } +void qemu_savevm_non_migratable_list(strList **reasons) +{ + SaveStateEntry *se; + + QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { + if (se->vmsd && se->vmsd->unmigratable) { + QAPI_LIST_PREPEND(*reasons, + g_strdup_printf("non-migratable device: %s", + se->idstr)); + } + } +} + void qemu_savevm_state_header(QEMUFile *f) { trace_savevm_state_header(); diff --git a/migration/savevm.h b/migration/savevm.h index aaee2528ed..6461342cb4 100644 --- a/migration/savevm.h +++ b/migration/savevm.h @@ -30,6 +30,7 @@ #define QEMU_VM_SECTION_FOOTER 0x7e bool qemu_savevm_state_blocked(Error **errp); +void qemu_savevm_non_migratable_list(strList **reasons); void qemu_savevm_state_setup(QEMUFile *f); bool qemu_savevm_state_guest_unplug_pending(void); int qemu_savevm_state_resume_prepare(MigrationState *s); |