By default, master-failover will call "herd start ganeti-wconfd" with
extra arguments such as --force-node.  That does not work with the
Shepherd, so the Guix service has a "force-start" action for this purpose.

diff --git a/lib/bootstrap.py b/lib/bootstrap.py
--- a/lib/bootstrap.py
+++ b/lib/bootstrap.py
@@ -1011,9 +1011,7 @@ def MasterFailover(no_voting=False):
 
   try:
     # Forcefully start WConfd so that we can access the configuration
-    result = utils.RunCmd([pathutils.DAEMON_UTIL,
-                           "start", constants.WCONFD, "--force-node",
-                           "--no-voting", "--yes-do-it"])
+    result = utils.RunCmd(["herd", "force-start", constants.WCONFD])
     if result.failed:
       raise errors.OpPrereqError("Could not start the configuration daemon,"
                                  " command %s had exitcode %s and error %s" %
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<div class='path'>path: <a href='/guix/log/?id=236fadf52868d3ced233b144f9d560b51dcecec1'>root</a>/<a href='/guix/log/nix?id=236fadf52868d3ced233b144f9d560b51dcecec1'>nix</a>/<a href='/guix/log/nix/nix-daemon?id=236fadf52868d3ced233b144f9d560b51dcecec1'>nix-daemon</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/nix/nix-daemon?id=236fadf52868d3ced233b144f9d560b51dcecec1&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-04-19 19:06:26 +0200'>2018-04-19</span></td><td><a href='/guix/commit/nix/nix-daemon?id=5cefb13ddd4d51a63a387e74c138035b7b8b8537'>guix-daemon: Disable garbage collection for remote connections.</a><span class='msg-avail'>...</span></td><td>Roel Janssen</td></tr>
<tr><td><span title='2018-01-07 23:47:22 +0100'>2018-01-07</span></td><td><a href='/guix/commit/nix/nix-daemon?id=f997137d0e2eba27bb1e2b282ee19ea474c41e12'>daemon: Make libbz2 an optional dependency.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-01-07 23:47:22 +0100'>2018-01-07</span></td><td><a href='/guix/commit/nix/nix-daemon?id=29a686688674dc875775305312513405fa396a06'>daemon: Add gzip log compression.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>