I allocated 6 SAN volumes to Linux for Oracle RAC. After some time I assigned one more volume, on DBA's request but the problem is, when I allot the new volume to host, host regenerates disks ids and running applications (RAC) collapse due to change of disk ids.
Now how can I adjust it as previous state ?
When allocate SAN in Linux, you have identify what changes have been done. To re-instate to the previous state, you can do backtrack on what you have done. Once your on the way back tracking, you will notice what you have done wrong.
Will then make some adjustment along the way to fix the issue.
If it's not possible to do the backtracking, then you need to use the balancing IQ within the group, the path and it's address. check the minor changes and query on the disk ID's.
This is the route that you might be going by check all the changes you have made. It could be the query on the disk ID's or it could be within the group. Check them and do the back tracking.
