SnapMirror update fails randomly with CSM error: Operation referred to a non-existent session
Applies to
- ONTAP 9
- SnapMirror
Issue
- SnapMirror update randomly fails with the error message:
SnapMirror update from source volume 'SVM01:vol1' to destination volume 'svm_dst:vol2' failed with error 'Transfer failed.(Replication operation request failed from Cluster Id: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx, Node Id: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx to Cluster Id: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx, Node Id: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx due to a network error(CSM: Operation referredto a non-existent session.))'. Relationship UUID 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx'.
IFSTAT-Aindicates highTotal discardscounts for the destination port whichh intercluster LIF is configured
RECEIVE
Total frames: 76084m | Frames/second: 10751 | Total bytes: 101t
Bytes/second: 14306k | Total errors: 0 | Errors/minute: 0
Total discards: 890k | Discards/minute: 8 | Multi/broadcast: 97874k
Non-primary u/c: 0 | Errored frames: 0 | Unsupported Op: 0
CRC errors: 0 | Runt frames: 0 | Fragment: 0
Long frames: 0 | Jabber: 0 | Length errors: 0
Alignment errors: 0 | No buffer: 0 | Xon: 0
Xoff: 0 | Pause: 0 | Jumbo: 0
Noproto: 0 | Error symbol: 0 | Illegal symbol: 0
Bus overruns: 0 | Queue drops: 0 | LRO segments: 0
LRO bytes: 0 | LRO6 segments: 0 | LRO6 bytes: 0
Bad UDP cksum: 0 | Bad UDP6 cksum: 0 | Bad TCP cksum: 0
Bad TCP6 cksum: 0 | Mcast v6 solicit: 0 | Lagg errors: 70
Lacp errors: 0 | Lacp PDU errors: 0