osaf/services/saf/avsv/avd/avd_role.cc | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
MDS can force an active vdest into quiesced state (see docs). Reasons for this
happening is unclear. The logic avd_mds_qsd_role_evh() can only handle this
event in context of a controller switch-over. Otherwise it could e.g. hang in
using IMM which eventually times out and calls abort() generating a core dump.
Instead exit the amfd process when this event happens in non controller
switch-over state. amfnd will failfast reboot the node when it detects this.
diff --git a/osaf/services/saf/avsv/avd/avd_role.cc
b/osaf/services/saf/avsv/avd/avd_role.cc
--- a/osaf/services/saf/avsv/avd/avd_role.cc
+++ b/osaf/services/saf/avsv/avd/avd_role.cc
@@ -569,6 +569,15 @@ void avd_mds_qsd_role_evh(AVD_CL_CB *cb,
TRACE_ENTER();
+ /* Only accept this event in controller switch-over state, in other
+ * states it is invalid and indicates severe cluster problems.
+ */
+ if (cb->swap_switch == SA_FALSE) {
+ LOG_NO("%s: MDS unexpectedly changed role to QUIESCED",
__FUNCTION__);
+ LOG_CR("Controller split brain detected, exiting");
+ _exit(EXIT_FAILURE); // should never get here...
+ }
+
/* Give up IMM OI implementer role */
if ((rc = immutil_saImmOiImplementerClear(cb->immOiHandle)) !=
SA_AIS_OK) {
LOG_ER("FAILOVER Active --> Quiesced FAILED, ImplementerClear
failed %u", rc);
------------------------------------------------------------------------------
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