PRIMECLUSTER Installation and Administration Guide4.6 Cloud Services

24.2.2 Procedure for Restoring Nodes While the Operation does not Work

1. If either or all of the nodes are started before restoring the nodes, stop RMS. Perform the restoration procedure on either node that is started.

   # hvshut -a

2. Select the latest disk when all nodes are started before restoring nodes in an environment where the mirroring among the servers of GDS is used. For all classes of GDS, execute the following command on either node.

   # /etc/opt/FJSVsdx/bin/sdxnetdisk -S -c <class name>

3. Restore the instance. To restore the snapshot or attach the EBS volumes, refer to the official AWS documentation.

   Note

   When using the mirroring among the servers of GDS, replace the system volume of the restoration target instance with the restored volume, not newly create the instance.

4. When using the mirroring among the servers of GDS, start the node and then execute the following with the restored node.

   1. Delete the information of the iSCSI device.

      # rm -f /var/opt/FJSVsdx/log/.sdxnetmirror_disable.db
      # rm -f /var/opt/FJSVsdx/log/.sdxnetmirror_timestamp

   2. Stop RMS.

      # hvshut -l

5. Restore the other node if necessary.

   Note

   When using the mirroring among the servers of GDS, replace the system volume of the restoration target instance with the restored volume, not newly create the instance.

6. When using the mirroring among the servers of GDS, delete the iSCSI device information with the restored node if the node is restored with step 5.

   # rm -f /var/opt/FJSVsdx/log/.sdxnetmirror_disable.db
   # rm -f /var/opt/FJSVsdx/log/.sdxnetmirror_timestamp

7. If all nodes are stopped before restoring nodes in an environment where the mirroring among the servers of GDS is used, check the status of the source slice for the synchronization copying. If the source slice for the synchronization copying is INVALID, restore the status of the slice. For the "-d" option of the "sdxfix " command, specify the source disk of the synchronization copying. Perform this procedure on either node.

   # sdxfix -V -c <class name> -v <volume name> -d <disk name> -x NoRdchk

8. Perform step 2 to 4 described in "21.9.1.2.1 Setup Procedure of the Shutdown Facility for the Asynchronous Forcible Stop Method" on all nodes, and modify the InstanceID of the /usr/opt/reliant/etc/hvawsconfig file on all nodes created in "21.10.1.1 Creating Definition File."

9. If 2 of step 4 is performed, start RMS on the node where RMS is stopped.

   # hvcm