Ack,
Thanks,
Praveen
On 16-Aug-13 7:03 PM, Hans Feldt wrote:
> 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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