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8.1 Updating SUSE Linux Enterprise
Software tends to grow from version to version. Therefore,
take a look at the available partition space with df
before updating. If you suspect you are running short of disk space, secure
your data before updating and repartition your system. There is no general
rule of thumb regarding how much space each partition should have. Space
requirements depend on your particular partitioning profile and the software
selected.
8.1.1 Preparations
Before updating, copy the old configuration files to a separate medium,
such as streamer, removable hard disk, USB stick, or ZIP drive, to secure
the data. This primarily applies to files stored in
/etc as well as some of the directories and files in
/var and /opt. You may also want
to write the user data in /home (the
HOME directories) to a backup medium. Back up this data as
root. Only root has read permission for all local files.
Before starting your update, make note of the root partition. The command
df / lists the device name of the root
partition. In Example 8-1, the root partition to write
down is /dev/hda3 (mounted as /).
Example 8-1
List with df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 74G 22G 53G 29% /
tmpfs 506M 0 506M 0% /dev/shm
/dev/hda5 116G 5.8G 111G 5% /home
/dev/hda1 39G 1.6G 37G 4% /windows/C
/dev/hda2 4.6G 2.6G 2.1G 57% /windows/D
8.1.2 Possible Problems
If you update a default system from the previous version to this
version, YaST works out necessary changes and performs them. Depending on
your customizations, some steps or the entire update procedure may fail and
you must resort to copying back your backup data. Check the following
issues before starting the system update.
Checking passwd and group in /etc
Before updating the system, make sure that
/etc/passwd and /etc/group do
not contain any syntax errors. For this purpose, start the verification
utilities pwck and grpck as
root and eliminate any reported
errors.
PostgreSQL
Before updating (postgres), dump the databases. See the
manual page of pg_dump. This is only necessary if you
actually used PostgreSQL prior to your update.
8.1.3 Updating with YaST
Following the preparation procedure outlined in Section 8.1.1,
Preparations, you can now update your system:
-
Optionally, prepare an installation server. For background
information, see Section 4.2.1,
Setting Up an Installation Server Using YaST.
-
Boot the system as for the installation, described in Section 3.1,
System Start-Up for Installation. In YaST, choose a language and select
in the
dialog. Do not select .
-
YaST determines whether there are multiple root partitions. If there is
only one, continue with the next step. If there are several, select the
right partition and confirm with
(/dev/hda3 was selected in the example in Section 8.1.1,
Preparations). YaST reads the old
fstab on this partition to analyze and mount the
file systems listed there.
-
In the dialog, adjust the
settings according to your requirements. Normally, you can leave the
default settings untouched, but if you intend to enhance your system,
check the packages offered in the
submenus or add support for additional languages.
You also have the possibility to make backups of various system
components. Selecting backups slows down the update process. Use this
option if you do not have a recent system backup.
-
In the following dialog, choose to update only the software that is
already installed or to add new software components to the system
(upgrade mode). It is advisable to accept the suggested composition.
Adjustments can be made later with YaST.
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