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tests: add postcopy recovery test

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Test the postcopy recovery procedure by emulating a network failure
using migrate-pause command.

Tested-by: Balamuruhan S <bala24@linux.vnet.ibm.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180710091902.28780-10-peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Peter Xu 2018-07-10 17:19:01 +08:00 committed by Dr. David Alan Gilbert
parent 2f6d313836
commit d5f496407d
1 changed files with 80 additions and 0 deletions
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80
tests/migration-test.c
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@ -352,6 +352,29 @@ static void migrate_set_parameter(QTestState *who, const char *parameter,
migrate_check_parameter(who, parameter, value);
}
static void migrate_pause(QTestState *who)
{
QDict *rsp;
rsp = wait_command(who, "{ 'execute': 'migrate-pause' }");
g_assert(qdict_haskey(rsp, "return"));
qobject_unref(rsp);
}
static void migrate_recover(QTestState *who, const char *uri)
{
QDict *rsp;
gchar *cmd = g_strdup_printf(
"{ 'execute': 'migrate-recover', "
" 'id': 'recover-cmd', "
" 'arguments': { 'uri': '%s' } }", uri);
rsp = wait_command(who, cmd);
g_assert(qdict_haskey(rsp, "return"));
g_free(cmd);
qobject_unref(rsp);
}
static void migrate_set_capability(QTestState *who, const char *capability,
const char *value)
{
@ -608,6 +631,62 @@ static void test_postcopy(void)
migrate_postcopy_complete(from, to);
}
static void test_postcopy_recovery(void)
{
QTestState *from, *to;
char *uri;
if (migrate_postcopy_prepare(&from, &to)) {
return;
}
/* Turn postcopy speed down, 4K/s is slow enough on any machines */
migrate_set_parameter(from, "max-postcopy-bandwidth", "4096");
/* Now we start the postcopy */
migrate_postcopy_start(from, to);
/*
* Wait until postcopy is really started; we can only run the
* migrate-pause command during a postcopy
*/
wait_for_migration_status(from, "postcopy-active");
/*
* Manually stop the postcopy migration. This emulates a network
* failure with the migration socket
*/
migrate_pause(from);
/*
* Wait for destination side to reach postcopy-paused state. The
* migrate-recover command can only succeed if destination machine
* is in the paused state
*/
wait_for_migration_status(to, "postcopy-paused");
/*
* Create a new socket to emulate a new channel that is different
* from the broken migration channel; tell the destination to
* listen to the new port
*/
uri = g_strdup_printf("unix:%s/migsocket-recover", tmpfs);
migrate_recover(to, uri);
/*
* Try to rebuild the migration channel using the resume flag and
* the newly created channel
*/
wait_for_migration_status(from, "postcopy-paused");
migrate(from, uri, ", 'resume': true");
g_free(uri);
/* Restore the postcopy bandwidth to unlimited */
migrate_set_parameter(from, "max-postcopy-bandwidth", "0");
migrate_postcopy_complete(from, to);
}
static void test_baddest(void)
{
QTestState *from, *to;
@ -698,6 +777,7 @@ int main(int argc, char **argv)
module_call_init(MODULE_INIT_QOM);
qtest_add_func("/migration/postcopy/unix", test_postcopy);
qtest_add_func("/migration/postcopy/recovery", test_postcopy_recovery);
qtest_add_func("/migration/deprecated", test_deprecated);
qtest_add_func("/migration/bad_dest", test_baddest);
qtest_add_func("/migration/precopy/unix", test_precopy_unix);