142 OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guidenovdocx (en) 7 January 201010.4 Creating NSS Volumes on a Shared PoolYou must create at least one volume on a shared pool before you migrate it. As a best practice, werecommend that you create only one volume per shared pool.IMPORTANT: Before adding volumes on a shared pool, make sure that the pool is mounted on theserver where the pool was created. This is necessary because the Pool object information is relativeto the Server object of the server where the pool was created.When you create a volume, commands are added to the pool resource load and unload scripts toautomatically mount and dismount the volume when the scripts run. You can modify the load scriptto comment out the mount command so that you can manually mount the volume on a node in thecluster where the pool resource has been activated.When you create an encrypted NSS volume in a shared pool, you must mount the volume manuallyby using NSSMU and enter the password. NSS uses the password to create a key. Instead of storingit in the server memory as it does for non-shared volumes, NSS asks Novell Cluster Services to storethe key and to pass it to the other nodes. After all servers hold the key, the volume is available foraccess as long as any one of the servers is still participating actively in the cluster. If all of theservers in the cluster fail, you must repeat this manual mounting procedure when you recover thecluster and restart services.You can create NSS volumes by using the Storage plug-in to Novell iManager or the server-basedNSSMU tool. For planning and management information, see the OES 2 SP2: NSS File SystemAdministration Guide. Section 10.4.1, “Using iManager to Create NSS Volumes,” on page 142 Section 10.4.2, “Using NSSMU to Create NSS Volumes,” on page 14310.4.1 Using iManager to Create NSS VolumesRepeat the following procedure for each cluster volume that you want to create on the shared pool.1 Make sure the pool resource is mounted on the same server in the cluster where the pool wascreated.2 Start your Internet browser and enter the URL for iManager.The URL is http://server_ip_address/nps/imanager.html. Replace server_ip_address with theIP address or DNS name of a server in the cluster that has iManager installed or with the IPaddress for Apache-based services.3 Specify your username and password, specify the tree information, then click Login.4 In the left column, select Storage, then select the Volumes.5 Specify a cluster server name or browse and select one, then click New.Select the server where the shared pool was originally created and is currently mounted.6 Specify the new volume name, then click Next.7 Select the check box next to the cluster pool where you want to create the volume and eitherspecify the size of the volume (Volume Quota) or select Allow the volume to grow to the size ofthe pool, then click Next.
