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migration: Add the configuration vmstate to the json writer 

Make the migration json writer part of MigrationState struct, allowing
the 'configuration' object be serialized to json.

This will facilitate the parsing of the 'configuration' object in the
next patch that fixes analyze-migration.py for arm.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231009184326.15777-2-farosas@suse.de>
This commit is contained in:
Nikolay Borisov 2023-10-09 15:43:21 -03:00 committed by Juan Quintela
parent f75ed59f40
commit 2aae1eb8da
2 changed files with 17 additions and 4 deletions
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1
migration/migration.c
View File

@ -1442,6 +1442,7 @@ int migrate_init(MigrationState *s, Error **errp)
error_free(s->error);
s->error = NULL;
s->hostname = NULL;
s->vmdesc = NULL;
migrate_set_state(&s->state, MIGRATION_STATUS_NONE, MIGRATION_STATUS_SETUP);

20
migration/savevm.c
View File

@ -1217,13 +1217,27 @@ void qemu_savevm_non_migratable_list(strList **reasons)
void qemu_savevm_state_header(QEMUFile *f)
{
MigrationState *s = migrate_get_current();
s->vmdesc = json_writer_new(false);
trace_savevm_state_header();
qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
qemu_put_be32(f, QEMU_VM_FILE_VERSION);
if (migrate_get_current()->send_configuration) {
if (s->send_configuration) {
qemu_put_byte(f, QEMU_VM_CONFIGURATION);
vmstate_save_state(f, &vmstate_configuration, &savevm_state, 0);
/*
* This starts the main json object and is paired with the
* json_writer_end_object in
* qemu_savevm_state_complete_precopy_non_iterable
*/
json_writer_start_object(s->vmdesc, NULL);
json_writer_start_object(s->vmdesc, "configuration");
vmstate_save_state(f, &vmstate_configuration, &savevm_state, s->vmdesc);
json_writer_end_object(s->vmdesc);
}
}
@ -1272,8 +1286,6 @@ void qemu_savevm_state_setup(QEMUFile *f)
Error *local_err = NULL;
int ret;
ms->vmdesc = json_writer_new(false);
json_writer_start_object(ms->vmdesc, NULL);
json_writer_int64(ms->vmdesc, "page_size", qemu_target_page_size());
json_writer_start_array(ms->vmdesc, "devices");