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

Administering a System: Managing Disks and Files
Backing Up Data
Chapter 6 693
vgcfgbackup command is run automatically to record the group’s
configuration (vgcfgbackup saves the configuration of each volume
group in /etc/lvmconf/ volume_group_name .conf).
To ensure recovery of LVM information following disk corruption, you
must back up both the /dev and /usr directories. Include the /usr
directory in the root volume group during your backup. If, however, the
/usr directory was not originally part of the root volume group, you can
still create a new logical volume in the root volume group and move the
/usr directory within it.
For information on saving volume group configuration information using
vgcfgbackup, see “Backing Up and Restoring Volume Group
Configuration” on page 581.
Backing Up Large Files
A large file is defined as one whose size is greater than 2 GB. See the
HP-UX Large Files White Paper Version 1.4 for more information.
Backup Utilities that Support Large Files
The following backup utilities will back up large files.
• dd
• fbackup, frecover
Neither of the preceding commands require any user intervention to
backup large files.
Backup Utilities that Do Not Support Large Files
The following backup utilities do not support large files:
• tar
• cpio
• pax
• ftio
Attempts to back up any files greater than 2 GB using the preceding
utilities will fail.