Adding a voting disk online

Admin — Tue, 08 Sep 2009 16:10:33 GMT

In 10.2 RAC it is now possible to add a voting disk online in addition to specifying more than one voting disk during the ClusterWare install.In 10G R1 there was no software level mirroring of the voting disk.

To add a voting disk:

crsctl add css votedisk path

To remove a voting disk:

crsctl delete css votedisk path

$ORA_CRS_HOME/bin/crsctl add css votedisk /dev/raw/raw4
Cluster is not in a ready state for online disk addition

You have to use the force option in the above command due to
Bug 4898020 ADDING VOTING DISK ONLINE CRASH THE CRS
which is fixed in the 10.2.0.4 patchset.

Before using the force option make sure the CRS stack is not up on any of the nodes.

ps -ef | grep d.bin | grep -v grep
This command should retrun no rows.

$ORA_CRS_HOME/bin/crsctl add css votedisk /dev/raw/raw4 -force
Now formatting voting disk: /dev/raw/raw4
successful addition of votedisk /dev/raw/raw4.

Make sure that the newly added disk can be seen from both nodes.

$ORA_CRS_HOME/bin/crsctl query css votedisk
0. 0 /dev/raw/raw2
1. 0 /dev/raw/raw4

located 2 votedisk(s).

$ORA_CRS_HOME/bin/crsctl query css votedisk
0. 0 /dev/raw/raw2
1. 0 /dev/raw/raw4

located 2 votedisk(s).

When deleting the newly added disks you should get the same error:

./crsctl delete css votedisk /dev/raw/raw4
Cluster is not in a ready state for online disk removal

./crsctl delete css votedisk /dev/raw/raw4 -force
successful deletion of votedisk /dev/raw/raw4.

The force option should be used CAREFULLY only after the CRS stack
is shutdown on all nodes. Failure to do so could result in OCR corruption.

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Adding a voting disk online