Hi Suresh,
I checked the OCUM events and found that there are no events related to syncmirror aggr.
There is one attribute about Aggregate Mirrored, which should say if aggregate is sync mirrored or not.
lnx142-x2:~ # dfm report catalog list -R Aggregate | grep -i mirror
Mirrored Aggregate Mirrored
lnx142-x2:~ #
But we do have event for sync and semi sync snapmirrors.
lnx142-x2:~ # dfm eventtype list | grep -i sync
snapmirror-resync:aborted Warning sm.resync
snapmirror-resync:completed Normal sm.resync
snapmirror-resync:failed Error sm.resync
sync-snapmirror:in-sync Information sm.sync
sync-snapmirror:out-of-sync Warning sm.sync
lnx142-x2:~ # dfm eventtype list | grep -i degrade
lnx142-x2:~ # dfm eventtype list | grep -i out
snapmirror:nearly-out-of-date Warning sm.lag
snapmirror:out-of-date Error sm.lag
snapvault-replica:nearly-out-of-date Warning snapvault-replica
snapvault-replica:out-of-date Error snapvault-replica
sync-snapmirror:out-of-sync Warning sm.sync
lnx142-x2:~ #
Regards
adai