20.14 Splitting Volumes

When you split a volume, NSS creates a DFS junction to serve as a placeholder for that directory and its contents. This might involve any directory level of the file system structure, from the volume’s root directory to its most distant subdirectory. Everything below the specified directory, including its subdirectories and the data therein, is copied from the original location to a new volume in the network, then the original directory contents are deleted.

20.14.1 Prerequisites

  • The source data resides on an NSS volume on a NetWare 6.5 or later server.

  • The original and destination servers are in the same DFS management context.

  • The VLDB services are running in the DFS management context.

  • The destination server is a NetWare 6.5 or later server, or it is an OES Linux server that has space available on a disk that is managed by EVMS.

  • Deleted files are not relocated, so make sure to recover any deleted files that you want to keep before you begin.

  • Set explicit trustees and trustee rights on the directory so they can be transferred to the junction. Users must have Read and File Scan rights to the directory. Inherited trustees and trustee rights are not transferred to the target volume. You must set those on the target volume after the split is complete.

20.14.2 Procedure

  1. Make sure you meet the Section 20.2, Prerequisites and Guidelines for DFS.

  2. You must create at least one DFS Management Context at an O or OU class level in the Novell eDirectory tree. Both the original volume location and the new volume location must be in the same DFS Management Context. You must create at least one Volume Location Database (VLDB) server in this management context.

    For information, see Section 20.3, Creating a DFS Management Context.

  3. Make sure users and applications are not accessing files on the volume throughout the move or split process.

  4. In iManager, Storage>Volumes.

    For instructions, see Section 3.1.6, Accessing Roles and Tasks in iManager.

  5. Select a server to manage.

    For instructions, see Section 3.1.7, Selecting a Server to Manage.

  6. From the Volumes list, select a volume that you want to split.

  7. Click Split to open the Split Volume dialog box.

    Sample Split Volume Wizard
  8. Specify the following parameters, then click Next.

    • New Location: Specify the eDirectory common name of the server where you want to move the selected volume.

    • Split Volume At: Specify the directory in the selected volume where you want the DFS junction to occur. All data below that point moves to the new volume created at the new location.

      IMPORTANT:Do not include a leading slash in the path.

    • Schedule: Select Start Now to begin the move immediately, or specify the date and time you want to schedule the move.

      WARNING:Make sure that the volume is active but not in use by users or APIs at the time that the move is to begin.

  9. Create and name the new volume.

    Typically, the new volume’s name is different from the original volume’s name. The new volume’s name must meet the uniqueness requirements in the new location and conform to volume naming conventions. For guidelines about naming volumes, see Section 4.5, Naming NSS Storage Objects. It is possible, though not necessarily advisable, to use the same name under some conditions, such as when the original volume and the new volume are on different servers.

    IMPORTANT:If the name you provide is not unique, you receive an error message. You must click Cancel to back out of the dialog box, then begin the split process again.

  10. Specify the pool on the new location where you want the new volume to reside, specify the volume quota, then click Next.

    Only pools that have free space appear in the list. You can select an existing pool from the list or create a new pool. If you create a new pool, the dialog box guides you through steps similar to the process for creating a new pool. For instructions, see Section 11.1, Creating a Pool.

    If no pools are listed, there is no space available to create a volume in the New Location. Cancel the dialog box, add more devices to the server and expand the desired pool, or free up space by deleting existing pools, then return to the Volume Management page to begin the move process from the beginning.

  11. Specify the attributes for the new volume, based on the volume attributes of the original volume.

    The dialog box displays the volume attributes for the original volume. Modifiable attribute settings can differ on the new volume. However, settings, such as Compression, that cannot be changed after they are set for a volume must be the same on the original volume and the new volume.

  12. Click Finish.

    The split can take a few minutes to several hours, depending on how much data needs to be relocated.

  13. To view the job’s status or to pause and resume the job, click Volume Job Control.

    For information, see Section 20.15, Managing Move or Split Volume Jobs.