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[VTL6000] VTL software problem: Failover status of HA VTL become 2-READY

Publication Date:  2012-10-15 Views:  175 Downloads:  0

Issue Description

Cross Failover mean 2 VTL server with Failover configured take over each other in special situation. At this time, Failover status of 2 VTL server are all 2-READY. Concrete phenomenon is like below:
1. In VTL console navigation tree, icons of 2 VTL servers in Failover group are all in red color.
2. Log 2 VTL server of Failover group with SSH tool, check Failover status with sms command, FailOverStatus parameter of 2 VTL server are all 2-(READY).

Alarm Information


Handling Process

Step 1 in VTL console navigation tree, right click one a VTL server in Failover group, select failover>stop take over Failover-B.
Step 2 click Yes in dialog of Virtual Tape Library console popped up, VTL server named Failover-B would restart, please wait about 4 minutes until VTL server finish start.
Step 3 check status of Failover-B server with vtl status command and sms command. All module status is OK with vtl status command, FailOverStatus parameter is 1(up) with sms command, VTL server named Failover-B recovery succeed.
Step 4 right click on VTL server named Failover-B which recover successfully, select failover > stop take over Failover-A to recover another VTL server.
Step 5 wait about 3~5 minutes, execute step 3 to verify whether VTL server named Failover-A recover successfully.

Root Cause

2 VTL server Failover-A and Failover-B configure Failover, Failover-A faults, Failover-B would take over service of Failover-A automatically, then Failover-A resume back to normal, Failover-B do not switch service back to Failover-A.
If Failover-B fault at this time, Failover-A cannot take over service of Failover-B, after Failover-B resume back to normal, there is Cross Failover of 2 VTL servers.
Failover-A and Failover-B is name of VTL server, please use actual name.