If delayed failover is enabled, and a downgrade to a version without #3060
occurs,
then the standby running a newer version with #3060 may complain about an out
of sync error during warm sync.
---
src/amf/amfd/ckpt_dec.cc | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/src/amf/amfd/ckpt_dec.cc b/src/amf/amfd/ckpt_dec.cc
index 6288b4f..75213f8 100644
--- a/src/amf/amfd/ckpt_dec.cc
+++ b/src/amf/amfd/ckpt_dec.cc
@@ -2721,10 +2721,25 @@ uint32_t avd_dec_warm_sync_rsp(AVD_CL_CB *cb,
NCS_MBCSV_CB_DEC *dec) {
if (updt_cnt->ng_updt != cb->async_updt_cnt.ng_updt)
LOG_ER("ng_updt counters mismatch: Active: %u Standby: %u",
updt_cnt->ng_updt, cb->async_updt_cnt.ng_updt);
- if (updt_cnt->failover_updt != cb->async_updt_cnt.failover_updt)
- LOG_ER("failover_updt counters mismatch: Active: %u Standby: %u",
- updt_cnt->failover_updt, cb->async_updt_cnt.failover_updt);
-
+ if (updt_cnt->failover_updt != cb->async_updt_cnt.failover_updt) {
+ if (dec->i_peer_version >= AVD_MBCSV_SUB_PART_VERSION_10) {
+ LOG_ER("failover_updt counters mismatch: Active: %u Standby: %u",
+ updt_cnt->failover_updt, cb->async_updt_cnt.failover_updt);
+ } else {
+ // Versions before 10 did not support failover_updt
+ // After a downgrade scenario, where the active is < v10
+ // and this node is >= v10, then there will be failover_updt mismatch
+ // If so, just set the value to what's on the older active
+ cb->async_updt_cnt.failover_updt = updt_cnt->failover_updt;
+
+ // check again
+ if (0 == memcmp(updt_cnt, &cb->async_updt_cnt,
+ sizeof(AVSV_ASYNC_UPDT_CNT))) {
+ cb->stby_sync_state = AVD_STBY_IN_SYNC;
+ return status;
+ }
+ }
+ }
LOG_ER("Out of sync detected in warm sync response, exiting");
osafassert(0);
--
2.7.4
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