Pozdrawiam
iSS
On 14 lut 2012, at 01:23, Albert Chu <ch...@llnl.gov> wrote:
> When in master state and performing light sweeps, openSM ignores
> other subnet managers in master state and fails to perform
> handovers or relinquish control. Handovers and relinquishing
> master is only performed after a heavy sweep. This can result
> in two subnet managers being in master state, seeing each other
> SM in master state, but both choose to do nothing about it.
>
> This patch initiates a heavy sweep when another master subnet
> manager is found during a light sweep. This is sufficient to
> start a handover or relinquish scenario.
>
> Signed-off-by: Albert Chu <ch...@llnl.gov>
> ---
> opensm/osm_sminfo_rcv.c | 18 ++++++++++++++++--
> 1 files changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/opensm/osm_sminfo_rcv.c b/opensm/osm_sminfo_rcv.c
> index 66eb886..d4ae7c9 100644
> --- a/opensm/osm_sminfo_rcv.c
> +++ b/opensm/osm_sminfo_rcv.c
> @@ -385,8 +385,22 @@ static void smi_rcv_process_get_sm(IN osm_sm_t * sm,
> osm_sm_state_mgr_signal_master_is_alive(sm);
> else {
> /* This is a response we got while sweeping the subnet.
> - We will handle a case of handover needed later on, when
> the sweep
> - is done and all SMs are recongnized. */
> + *
> + * If this is during a heavy sweep, we will handle a case of
> + * handover needed later on, when the sweep is done and all
> + * SMs are recognized.
> + *
> + * If this is during a light sweep, initiate a heavy sweep
> + * to initiate handover scenarios.
> + *
> + * Note that it does not matter if the remote SM is lower
> + * or higher priority. If it is lower priority, we must
> + * wait for it HANDOVER. If it is higher priority, we need
> + * to HANDOVER to it. Both cases are handled after doing
> + * a heavy sweep.
> + */
> + if (light_sweep)
> + sm->p_subn->force_heavy_sweep = TRUE;
> }
> break;
> case IB_SMINFO_STATE_STANDBY:
> --
> 1.7.1
>
>
>
> --
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