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Knowledge Base

[VTL6000] VTL software problem: when VTL master database become invalid, mirror database do not start automatically

Publication Date:  2012-10-12  |   Views:  161  |   Downloads:  0  |   Author:  SU1001573748  |   Document ID:  EKB1000017010


Issue Description

Delete the LUN where master database is in, master database is not replaced by mirror database. The function of database mirror become invalid, database status is uncompleted (lack segment).
Concrete phenomenon express like this:
In navigation tree of VTL console, select physical resource > storage device > optical fiber channel device, the LUN where master database in is in offline, LUN where mirror database in is online.

Alarm Information


Handling Process

Step 1 Recreate a LUN with same SCSI ID with deleted LUN.
Step 2 Mirror new-created LUN to VTL server.
Step 3 Delete mirror database.
Step 4 Execute vtl stop all command to stop all service.
Step 5 Execute vtl start command to start all service.
Step 6 Add new database mirror.
Step 7 Create tape on LUN where new master database and mirror database placed.

Root Cause

If tape is not created in LUN or RAID group where master database and mirror database placed, when LUN where master database placed become invalid, mirror database would not switch into master database.