Reclaiming storage space

The examples in this procedure reclaim the space occupied by the logical volume sfslvol1. Assume that the logical volume sfslvol1 is backed by two physical volumes: the original physical volume, sfspvol1, and a mirror, sfspvol1.mirr. Each physical volume resides on its own Open Systems disk partition, for example, sfspvol1 on /dev/rsd0f and sfspvol1.mirr on /dev/rse0f.

Perform the following steps to reclaim storage space:

1. Remove all mirrors of the backing physical volume using the tkadmin remove mirror command. The syntax of the tkadmin remove mirror command is

   tkadmin remove mirror -server server_name logical_volume_name
   physical_volume_name

   You must specify the name of the logical volume for the logical_volume_name argument and the name of the physical volume for the physical_volume_name argument. You can determine which physical volume and mirrors back a logical volume by using the tkadmin query lvol command.

   For example, enter the following command to remove a mirror named sfspvol1.mirr from a logical volume named sfslvol1:

   %  tkadmin remove mirror sfslvol1 sfspvol1.mirr

2. Restart the server in administrative mode. See Restarting a server in administrative mode for instructions.
3. Use the tkadmin delete lvol command to delete the logical volume. Deleting the logical volume removes the mapping of a physical volume to the logical volume it backs. You must delete a logical volume before you delete its backing physical volumes. The command syntax is

   tkadmin delete lvol -server server_name logical_volume_name

   You must specify the name of the logical volume for the logical_volume_name argument. For example, enter the following command to delete a logical volume named sfslvol1:

   %  tkadmin delete lvol sfslvol1

4. Use the tkadmin delete pvol command to delete the physical volume. You must delete a physical volume before you delete, that is, uninitialize, the disks that back it. The command syntax is

   tkadmin delete pvol -server server_name physical_volume_name

   You must specify the name of the physical volume to be deleted as the physical_volume_name argument. Be sure to delete all physical volumes, including physical volumes that back mirrors. For example, enter the following command to delete a physical volume named sfspvol1:

   %  tkadmin delete pvol sfspvol1

5. Use the tkadmin delete disk command to delete each disk that backs a physical volume. Deleting a disk marks the disk as uninitialized. The command syntax is

   tkadmin delete disk -server server_name disk_name

   You must specify the name of the disk as the disk_name argument. Any attempt to delete a disk that still stores a physical volume fails. Note that some physical volumes are stored on multiple disks and that a single disk can hold multiple physical volumes or portions of physical volumes.

   In this example, each physical volume resides on its own disk partition, for example, sfspvol1 on /dev/rsd0f and sfspvol1.mirr on /dev/rse0f. You must delete both disk partitions.

   On Open Systems. For example, enter the following command to delete a disk named /dev/rsd0f:

   %  tkadmin delete disk /dev/rsd0f

   On Windows. For example, enter the following command to delete a disk named D:\rqs1data:

   C:\> tkadmin delete disk D:\rqs1data

6. Windows Only. Delete the operating system file serving as a disk. That is, the file initially created by using the fileVol program or your own program. Use any standard file deletion mechanism to delete the file.