Hi Mathi, I tested the patch and SA_CLM_NODE_LEFT are sent to active node: ./rootfs/var/PL-4/log/messages:Sep 23 07:31:23 PL-4 local0.notice osafamfnd[391]: NO This node has exited the cluster
if run in UML and power off is done in clms_track_send_node_down before sending checkpoint data. /Regards HansN On 09/23/14 02:12, mathi.naic...@oracle.com wrote: > osaf/services/saf/clmsv/clms/clms_cb.h | 6 ++++ > osaf/services/saf/clmsv/clms/clms_evt.c | 48 > ++++++++++++++++++++++++++++---- > 2 files changed, 47 insertions(+), 7 deletions(-) > > > There is a possiblity that the checkpointing message for a NODE_DOWN reaches > the STANDBY first, i.e. > before the MDS delivers the NODE_DOWN event the the standby. > This can result in stale node_down record getting stored in the node_down > list which is a designated list > for processing of node downs that occur during role change from standby to > active. > The patch introduces a variable that checks whether the checkpoint event for > node_down has > arrived first, followed by a check during role change to ignore such stale > events. > > diff --git a/osaf/services/saf/clmsv/clms/clms_cb.h > b/osaf/services/saf/clmsv/clms/clms_cb.h > --- a/osaf/services/saf/clmsv/clms/clms_cb.h > +++ b/osaf/services/saf/clmsv/clms/clms_cb.h > @@ -37,6 +37,11 @@ typedef enum { > IMM_RECONFIGURED = 5 > } ADMIN_OP; > > +typedef enum { > + CHECKPOINT_PROCESSED = 1, > + MDS_DOWN_PROCESSED > +} NODE_DOWN_STATUS; > + > /* Cluster Properties */ > typedef struct cluster_db_t { > SaNameT name; > @@ -124,6 +129,7 @@ typedef struct clma_down_list_tag { > > typedef struct node_down_list_tag { > SaClmNodeIdT node_id; > + NODE_DOWN_STATUS ndown_status; > struct node_down_list_tag *next; > } NODE_DOWN_LIST; > > diff --git a/osaf/services/saf/clmsv/clms/clms_evt.c > b/osaf/services/saf/clmsv/clms/clms_evt.c > --- a/osaf/services/saf/clmsv/clms/clms_evt.c > +++ b/osaf/services/saf/clmsv/clms/clms_evt.c > @@ -471,6 +471,13 @@ void clms_track_send_node_down(CLMS_CLUS > node->stat_change = SA_TRUE; > node->change = SA_CLM_NODE_LEFT; > ++(clms_cb->cluster_view_num); > + > + if(clms_cb->ha_state == SA_AMF_HA_ACTIVE){ > + ckpt_node_rec(node); > + ckpt_node_down_rec(node); > + ckpt_cluster_rec(); > + } > + > clms_send_track(clms_cb, node, SA_CLM_CHANGE_COMPLETED); > /* Clear node->stat_change after sending the callback to its clients */ > node->stat_change = SA_FALSE; > @@ -480,12 +487,6 @@ void clms_track_send_node_down(CLMS_CLUS > clms_node_update_rattr(node); > clms_cluster_update_rattr(osaf_cluster); > > - if(clms_cb->ha_state == SA_AMF_HA_ACTIVE){ > - ckpt_node_rec(node); > - ckpt_node_down_rec(node); > - ckpt_cluster_rec(); > - } > - > /*For the NODE DOWN, boottimestamp will not be updated */ > > /* Delete the node reference from the nodeid database */ > @@ -592,6 +593,7 @@ static uint32_t proc_mds_node_evt(CLMSV_ > clms_cb->node_down_list_tail->next = > node_down_rec; > } > clms_cb->node_down_list_tail = node_down_rec; > + node_down_rec->ndown_status = MDS_DOWN_PROCESSED; > } > > done: > @@ -1613,6 +1615,7 @@ void clms_remove_node_down_rec(SaClmNode > { > NODE_DOWN_LIST *node_down_rec = clms_cb->node_down_list_head; > NODE_DOWN_LIST *prev_rec = NULL; > + bool record_found = false; > > while (node_down_rec) { > if (node_down_rec->node_id == node_id) { > @@ -1638,11 +1641,36 @@ void clms_remove_node_down_rec(SaClmNode > /* Free the NODE_DOWN_REC */ > free(node_down_rec); > node_down_rec = NULL; > + record_found = true; > break; > } > prev_rec = node_down_rec; /* Remember address of this > entry */ > node_down_rec = node_down_rec->next; /* Go to next entry */ > } > + > + if (!record_found) { > + /* MDS node_down has not yet reached the STANDBY, > + * Just add this checkupdate record to the list. MDS_DOWN > processing will delete it. > + * If role change happens before MDS_DOWN is recieved, > + * then role change processing just ignores the record and > removes it > + * from the list. > + */ > + node_down_rec = NULL; > + if ((node_down_rec = (NODE_DOWN_LIST *) > malloc(sizeof(NODE_DOWN_LIST))) == NULL) { > + LOG_CR("Memory Allocation for NODE_DOWN_LIST failed"); > + return; > + } > + memset(node_down_rec, 0, sizeof(NODE_DOWN_LIST)); > + node_down_rec->node_id = node_id; > + if (clms_cb->node_down_list_head == NULL) { > + clms_cb->node_down_list_head = node_down_rec; > + } else { > + if (clms_cb->node_down_list_tail) > + clms_cb->node_down_list_tail->next = > node_down_rec; > + } > + clms_cb->node_down_list_tail = node_down_rec; > + node_down_rec->ndown_status = CHECKPOINT_PROCESSED; > + } > } > > /** > @@ -1696,7 +1724,13 @@ void proc_downs_during_rolechange (void) > /*Remove NODE_DOWN_REC from the NODE_DOWN_LIST */ > node = clms_node_get_by_id(node_down_rec->node_id); > temp_node_down_rec = node_down_rec; > - if (node != NULL) > + /* If nodedown status is CHECKPOINT_PROCESSED, it means that > + * a checkpoint update was received when this node was STANDBY, > but > + * the MDS node_down did not reach the STANDBY. An extremely > rare chance, > + * but good to have protection for it, by ignoring the record > + * if the record is in CHECKPOINT_PROCESSED state. > + */ > + if ((node != NULL) && (temp_node_down_rec->ndown_status != > CHECKPOINT_PROCESSED)) > clms_track_send_node_down(node); > node_down_rec = node_down_rec->next; > /*Free the NODE_DOWN_REC */ ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Opensaf-devel mailing list Opensaf-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensaf-devel