Need help in service guard cluster

[Ali Imran Abbas]

We had some issue with the service guard cluster and the cluster was not able to start due to some oracle parameters change.

I halted cluster and then changed the volume groups mode and then mounted the file system.

Here are the steps that I performed:

cmhaltcl  (to stop cluster)

vgchange -c y vgname
vgvhange -a y vgname
and then mounted the file systems manually. The Oracle DBA then brought up the DB and undid the change.

After that, the DBA brought the DB down, then I unmounted all file systems, deactivated the volume groups and then tried to bring up the cluster.

vgchange -a n

But the package failed to start. The error that I got was:

Activating volume group with exclusive option.

Activation mode requested for the volume group conflicts with the configured mode.

Can any one help here.

I think I have to change the volume group activation mode here as:

vgchange -c y vgname 

Please confirm

[Mani_Np]

Yes, You are right.

To activate VG in exclusive mode, it should be cluster aware.

Please use below command and check if the VG can be activated exclusively:

# vgchange -c y vgname
# vgchange -a e vgname

If successful, deactivate it before starting the package:
# vgchange -a n vgname

Then, start the package.