mon: add osdmonitor_prepare_command to the admin socket

It provides a developer path allowing functional tests to modify the
pending OSDMap without triggering a PaxosProposal.

It can be used as follows:

   echo '{"prefix":"osdmonitor_prepare_command","prepare":"osd crush tunables","profile":"bobtail"}' | nc -U out/mon.a.asok

It will transform the command into:

  {"prefix":"osd crush tunables","profile":"bobtail"}

and feed it to OSDMonitor::prepare_command_impl(). The pending OSDMap won't
be proposed because it short circuit PaxosService::dispatch. It will,
however, be proposed next time PaxosService::dispatch() gets a chance.

It cannot be used via the ceph command line.

Signed-off-by: Loic Dachary <loic@dachary.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mon/Monitor.h b/src/mon/Monitor.h
index 47fa6587aa3..d7a165f8879 100644
--- a/src/mon/Monitor.h
+++ b/src/mon/Monitor.h
@@ -620,6 +620,7 @@ public:
                         const MonCommand *this_cmd);
   void _mon_status(Formatter *f, ostream& ss);
   void _quorum_status(Formatter *f, ostream& ss);
+  void _osdmonitor_prepare_command(cmdmap_t& cmdmap, ostream& ss);
   void _add_bootstrap_peer_hint(string cmd, cmdmap_t& cmdmap, ostream& ss);
   void handle_command(class MMonCommand *m);
   void handle_route(MRoute *m);