Re: [PATCH 3/4] migration-test: Make sure that multifd and cancel works

[Juan Quintela <quintela@redhat.com>]

"Dr. David Alan Gilbert" <dgilbert@redhat.com> wrote:
> * Juan Quintela (quintela@redhat.com) wrote:
>> Test that this sequerce works:

>> +    /* 1 ms should make it not converge*/
>> +    migrate_set_parameter_int(from, "downtime-limit", 1);
>> +    /* 1GB/s */
>> +    migrate_set_parameter_int(from, "max-bandwidth", 1000000000);
>
> This is copied from postcopy_prepare, note that I dropped that bandwidth
> quite a bit in 513aa2c because we were seeing TCG on slow hosts converge
> even at 1ms, because the vCPU wasn't dirtying pages quickly.
>

We have to use a #define to have everything using the same.  Right now,
I am using the same that preoopy_tcp and that multifd :-(

>> +    migrate_set_parameter_int(from, "multifd-channels", 16);
>> +    migrate_set_parameter_int(to, "multifd-channels", 16);
>> +
>> +    migrate_set_capability(from, "multifd", "true");
>> +    migrate_set_capability(to, "multifd", "true");
>> +
>> +    /* Start incoming migration from the 1st socket */
>> +    rsp = wait_command(to, "{ 'execute': 'migrate-incoming',"
>> +                           "  'arguments': { 'uri': 'tcp:127.0.0.1:0' }}");
>> +    qobject_unref(rsp);
>> +
>> +    /* Wait for the first serial output from the source */
>> +    wait_for_serial("src_serial");
>> +
>> +    uri = migrate_get_socket_address(to, "socket-address");
>> +
>> +    migrate(from, uri, "{}");
>> +
>> +    wait_for_migration_pass(from);
>> +
>> +    printf("before cancel\n");
>> +    migrate_cancel(from);
>> +    printf("after cancel\n");
>
> Do you really want those printf's for normal operation?

Obviously no, thanks.

>> +
>> +    /* 300ms it should converge */
>> +    migrate_set_parameter_int(from, "downtime-limit", 600);
>
> Comment doesn't match parameter!

Ooops.

>
> With those fixed;

>
>
> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

Thanks.