In my perspective, this should be done at the Active Only and standby
should just drop it. Atleast we will have the standby which gets
promoted to active and continues to provide the service. We should not
be performing a cluster reset.
Thoughts?.
On Friday 16 August 2013 07:03 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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