During the VIS Remote Replication, the RLINK Disconnection and Connection are Repeated so that the SRL Overflows

Publication Date:  2012-07-18 Views:  849 Downloads:  0
Issue Description
During the VVR replication, the RLINK disconnection and connection are repeated so that the SRL overflows. The customer removes the network fault, but the problem persists.
Error information in Syslog is shown as follows:
Jul 14 16:25:34 DUBAIN2000SERVER0 last message repeated 20 times
Jul 14 16:25:34 DUBAIN2000SERVER0 vxio: [ID 467919 kern.warning] WARNING: VxVM VVR vxio V-5-0-266 Rlink a_to_b_rlk disconnected from remote
Jul 14 16:25:35 DUBAIN2000SERVER0 vxio: [ID 910032 kern.notice] NOTICE: VxVM VVR vxio V-5-0-330 Unable to connect to rlink a_to_b_rlk on rvg wm_rvg: Rlink already connected on remote
Jul 14 16:25:36 DUBAIN2000SERVER0 vxio: [ID 490591 kern.notice] NOTICE: VxVM VVR vxio V-5-0-265 Rlink a_to_b_rlk connected to remote
Jul 14 16:31:09 DUBAIN2000SERVER0 vxio: [ID 218356 kern.warning] WARNING: VxVM VVR vxio V-5-0-267 Rlink a_to_b_rlk disconnecting due to ack timeout on update message
Jul 14 16:31:11 DUBAIN2000SERVER0 last message repeated 19 times
Jul 14 16:31:11 DUBAIN2000SERVER0 vxio: [ID 467919 kern.warning] WARNING: VxVM VVR vxio V-5-0-266 Rlink a_to_b_rlk disconnected from remote
Jul 14 16:31:11 DUBAIN2000SERVER0 vxio: [ID 442312 kern.notice] NOTICE: VxVM VVR vxio V-5-0-209 Log overflow protection on rlink a_to_b_rlk triggered DCM protection
Jul 14 16:31:12 DUBAIN2000SERVER0 vxio: [ID 910032 kern.notice] NOTICE: VxVM VVR vxio V-5-0-330 Unable to connect to rlink a_to_b_rlk on rvg wm_rvg: Rlink already connected on remote
Jul 14 16:31:13 DUBAIN2000SERVER0 vxio: [ID 490591 kern.notice] NOTICE: VxVM VVR vxio V-5-0-265 Rlink a_to_b_rlk connected to remote
Alarm Information
None
Handling Process
Change the RLINK protocol into TCP.
Root Cause
The UDP protocol is applied to the customer's RLINK. When the I/O is heavy, the replication process of VVR is faulty.
Suggestions
When you configure the VVR remote replication, you are recommended to apply TCP to the transmission after the network stabilizes.

END