Installation guide

•An addlist_file , which lists the files or directories you want to
include on the miniroot file system.
•An
fslist_file , which specifies the file systems to back up.
•A/usr/lib/sabt/sbin/custom_install.sh script, if you want to
customize the restored system image. The file must be written in the
Bourne shell language (sh1) as it is the only shell provided on the
miniroot file system. The btcreate utility copies the
custom_install.sh file onto tape and places it in the sbin directory
on the miniroot file system. The btextract utility invokes the
custom_install.sh script before exiting.
11.2.2.2 Creating the SAS Kernel
To create the SAS kernel, the btcreate utility copies the
/usr/sys/conf/
YOUR_SYSTEM_NAME configuration file to
/usr/sys/conf/
YOUR_SYSTEM_NAME.BOOTABLE and modifies it as
follows:
config vmunix root on md
pseudo-device memd 30720
These modifications indicate that a memory file system of 30720 is being
configured. The memory file system and the disk partition where the
miniroot file system reside are equivalent in size.
After modifying the configuration file, the btcreate utility executes the
doconfig command and moves the bootable kernel to the /usr/sys/bin
directory. For information on syntax format and flags, see the btcreate
reference page.
11.2.2.3 Disk Space Requirements
When selecting disk partitions while restoring file systems from tape, add 5
percent to the needed file size displayed on the console.
To use the btcreate utility, your system must have at least 156,000
512-byte blocks of free space in the /usr directory. You will not have
enough space if your system uses an RZ26 (or smaller disk) with the
default partitions when you have installed all of the subsets and kernel
options. To overcome this limitation, you can reclaim the required space by
removing some subsets or by creating and mounting new partitions.
The following steps show you how to create and mount new partitions for a
UNIX file system (UFS). If you prefer to use AdvFS, use the mkfdmn and
mkfset commands.
1. Run the newfs command to re-create a new partition, as shown in the
following example for system FLAWLESS:
Administering the Archiving Services 11–5