Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Administering a System: Managing Disks and Files
Managing File Systems
Chapter 6 627
3. Remove files until the remaining number is well below the file and/or
file system block quotas determined by the soft limits.
4. Move the file back into the original file system.
Or, when using a job-control shell:
1. Go to the shell and type a “suspend” character (for example, pressing
the CTRL and Z keys at the same time) to suspend the editor.
2. Remove files until the number remaining is below the file and/or file
system block quotas.
3. Type fg at the shell prompt to return to the editor.
Managing Mirrored File Systems
• “Creating and Modifying Mirrored Logical Volumes” on page 628
• “Doing an Online Backup by Splitting a Logical Volume” on page 630
• “Achieving I/O Channel Separation” on page 630
• “Mirroring Root, Boot, and Primary Swap Logical Volumes for HP
9000 (PA-RISC) Systems” on page 631
• “Mirroring a Boot Disk with LVM on HP-UX 11i for HP Integrity
Servers” on page 634
• “Mirroring Tasks that Must be Done Using HP-UX Commands” on
page 637
Mirroring allows you to simultaneously maintain identical copies of a
logical volume containing a file system. As a result, if a disk fails, or if
media errors occur to part of a disk, you will still have access to the file
system within the mirrored logical volume. It is also possible to mirror a
logical volume containing raw data, such as from a database.
If you would like to learn more about basic mirroring tasks, it is
suggested that you refer to the book Disk and File Management Tasks on
HP-UX published by Prentice Hall PTR, 1997.
To use mirroring, you will need to purchase MirrorDisk/UX, product
number B2491A, for servers. This software product is not bundled with
HP-UX and is not supported on workstations. (Mirroring is not
supported on HP-IB disks.)