Funcan

from rflib import *
import time

d = RfCat()

def init(d):
    d.setFreq(433955000)
    d.setMdmModulation(MOD_ASK_OOK)

def run():

Funcan

<?xml version='1.0' encoding='utf-8'?>
<?grc format='1' created='3.7.8'?>
<flow_graph>
  <timestamp>Tue Aug 25 19:04:21 2015</timestamp>
  <block>
    <key>options</key>
    <param>
      <key>author</key>
      <value></value>
    </param>

Funcan

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef _MSC_VER
#include <intrin.h> /* for rdtscp and clflush */
#pragma optimize("gt",on)
#else
#include <x86intrin.h> /* for rdtscp and clflush */
#endif

Funcan

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef _MSC_VER
#include <intrin.h> /* for rdtscp and clflush */
#pragma optimize("gt",on)
#else
#include <x86intrin.h> /* for rdtscp and clflush */
#endif

Funcan

So, we want to add the 'cluster' attribute t ovolumes in an upgrade safe manner

Pre-upgrade we are on some RPC version, I'm going to call 1.12 for no good reason

The new release finishes with real RPCs at 1.25

So, if we do a rolling upgrade, then the RPC version number will stay below 1.25 until we know everybody is running the new code. If we make the create RPC that fills in the version field RPC version 1.26, then make sure API never calls it until the minimum supported RPC version anyeverywhere is 1.26, then we should be safe for that RPC version to start filling in the cluster field.

Funcan

The Point

Allow cinder to move to an A/A c-vol model, with minimal disruption and with a safe upgrade path

The Idea

1. Add a 'cluster' attribute to every c-vol service.

Funcan

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