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HP-UX System Administration Tasks: HP 9000 > Chapter 6 Managing Swap Space and Dump Areas

Adding, Modifying, or Removing Device Swap

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You can allocate secondary swap to logical volumes or disk sections dynamically, using either SAM or the swapon command. See swapon(1M) for more information. Dynamic allocation means that you can make these changes while the system is running without configuring them into the system. However, you cannot modify or remove device swap without rebooting. You remove device swap with SAM, or by editing /etc/fstab to remove the swap entry, followed by a system reboot. You modify device swap by re-adding a new entry into /etc/fstab after having removed the original entry.

NOTE: If you are using a single section non-LVM disk on a Series 700, to add swap space you can also either add a new disk or do the following:
  1. Back up the existing file system.

  2. Re-create the file system on the existing device to reserve more swap space using newfs(1M).

  3. Restore the saved file system to the new configuration.

  4. Run mkboot(1M) to place boot utilities in the boot area. This must be done from another system

In order to configure secondary swap, use SAM to set up file system swap. File system swap is always secondary swap.

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