Storix Software SBAdmin Linux System Recovery Guide - Manual (Page 63)

The options displayed here are for an “ext2” filesystem. If you change to a different filesystem type, the options
will change as well. We won’t describe the options in detail since you have much information available with the
F1 (help) key. Also use the F4 key to show lists of available options.
The options common to all filesystems are:
Create Option – Here you can specify to Create the filesystem only, Create it and restore the data, or
Delete it. Although the filesystem data may be on the backup, you can choose to create the filesystem without
actually restoring the data into it.
Mount point – You can change the directory where the filesystem will be mounted. The data is restored relative
to this directory, so the contents, if any will not change. You cannot change the mount point of the root (/), /boot
or /usr (if any) filesystems.
Device – Here you can select a new device where the filesystem should be created and/or restored. Possible
filesystem devices are whole disks, partitions, mate-disks and logical volumes. When pressing F4 at this field,
you will get a list of any devices that are not already assigned data as follows:
Filesystem type – Here’s where you can select the type of filesystem to create. Only the filesystem types
supported by BOTH the boot media and the backup to be restored will be selectable within this field. Changing
this field will change the options while appear in the Additional options section below.
Only filesystems supported by the boot loader will be available for the root
filesystem UNLESS you have a /boot or /yaboot filesystem. In that case, the /boot or
/yaboot filesystem will be limited to filesystem types supported by the boot loader.
Mount options – Pressing F4 at this field will display a lengthy list of mount options which apply to all
filesystems as well as additional mount options specific to the selected filesystem type. You can combine them
in most cases, and some options, when selected, will prompt you for additional input. In most cases, you can
use “default”. Don’t change these unless you know what you’re doing.
Additional Options – Various options such as block size, fragment size, external journal device, label id, etc,
will appear, based on the filesystem type selected. The options vary for each filesystem, and the list of
available selections under each option will also vary depending on both the filesystem type and the other
options selected.
External Journals
Some filesystem types provide the ability to use external journals. In this case, you can select another
device (same type as the filesystem itself) where the filesystem metadata will be journaled. Since journaling
the metadata can be a bit of a performance hit, this allows you to keep the journal on a separate disk than
the filesystem itself to ease the I/O workload.
Minimum Filesystem Size versus Device Size
The minimum filesystem size displayed in various places in the menus is the size of the data in the original
filesystem that was backed up. The size of the device may have to be quite a bit larger depending on the
amount of space the filesystem metadata and journaling requires.
Storix System Backup Administrator 63 Version 8.2 Linux System Recovery Guide