Backing Up Voting Disks

In Oracle Clusterware 11g release 2 (11.2), you no longer have to back up the voting disk. The voting disk data is automatically backed up in OCR as part of any configuration change and is automatically restored to any voting disk added. If all voting disks are corrupted, however, you can restore them as described in "Restoring Voting Disks".

11g 默认情况下，备份OCR时会自动一起备份voting disk。

Restoring Voting Disks

If all of the voting disks are corrupted, then you can restore them, as follows:

1. Restore OCR as described in "Restoring Oracle Cluster Registry", if necessary.

   This step is necessary only if OCR is also corrupted or otherwise unavailable, such as if OCR is on Oracle ASM and the disk group is no longer available.

   See Also:

   Oracle Automatic Storage Management Administrator's Guide for more information about managing Oracle ASM disk groups

2. Run the following command as root from only one node to start the Oracle Clusterware stack in exclusive mode, which does not require voting files to be present or usable:

   # crsctl start crs -excl
   

3. Run the following command to retrieve the list of voting files currently defined:

   $ crsctl query css votedisk
   

   This list may be empty if all voting disks were corrupted, or may have entries that are marked as status 3 or OFF.

4. Depending on where you store your voting files, do one of the following:

   • If the voting disks are stored in Oracle ASM, then run the following command to migrate the voting disks to the Oracle ASM disk group you specify:

     crsctl replace votedisk +asm_disk_group
     

     The Oracle ASM disk group to which you migrate the voting files must exist in Oracle ASM. You can use this command whether the voting disks were stored in Oracle ASM or some other storage device.

   • If you did not store voting disks in Oracle ASM, then run the following command using the File Universal Identifier (FUID) obtained in the previous step:

     $ crsctl delete css votedisk FUID
     

     Add a voting disk, as follows:

     $ crsctl add css votedisk path_to_voting_disk
     

5. Stop the Oracle Clusterware stack as root:

   # crsctl stop crs
   

6. Restart the Oracle Clusterware stack in normal mode as root:

   # crsctl start crs