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migration: announce VM's new home just before VM is runnable 

We were announcing the dest host's IP as our new IP a bit too soon -- if
there were errors detected after this announcement was done, the
migration is failed and the VM could continue running on the src host --
causing problems later.

Move around the qemu_announce_self() call so it's done just before the
VM is runnable.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Amit Shah 2015-10-14 17:37:19 +05:30 committed by Juan Quintela
parent ed1f3e0090
commit 92e3762237
1 changed files with 6 additions and 1 deletions
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7
migration/migration.c
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@ -294,7 +294,6 @@ static void process_incoming_migration_co(void *opaque)
migrate_decompress_threads_join();
exit(EXIT_FAILURE);
}
qemu_announce_self();
/* Make sure all file formats flush their mutable metadata */
bdrv_invalidate_cache_all(&local_err);
@ -305,6 +304,12 @@ static void process_incoming_migration_co(void *opaque)
exit(EXIT_FAILURE);
}
/*
* This must happen after all error conditions are dealt with and
* we're sure the VM is going to be running on this host.
*/
qemu_announce_self();
/* If global state section was not received or we are in running
state, we need to obey autostart. Any other state is set with
runstate_set. */