Quick Start Guide
16.1.2 Possible Problems
If you upgrade a default system from the previous version to this version, YaST works
out the necessary changes and performs them. Depending on your customizations,
some steps (or the entire upgrade procedure) may fail and you must resort to copying
back your backup data. Check the following issues before starting the system update.
16.1.2.1 Checking passwd and group in /etc
Before upgrading the system, make sure that /etc/passwd and /etc/group do not
contain any syntax errors. For this purpose, start the verication utilities pwck and
grpck as root to eliminate any reported errors.
16.1.2.2 Shut Down Virtual Machines
If your machine serves as a VM Host Server for KVM or Xen, make sure to properly
shut down all running VM Guests prior to the update. Otherwise you may not be able
to acces the guests after the update.
16.1.2.3 PostgreSQL
Before updating PostgreSQL (postgres), dump the databases. See the manual page
of pg_dump. This is only necessary if you actually used PostgreSQL prior to your update.
16.1.3 Upgrading with YaST
Following the preparation procedure outlined in Section 16.1.1, “Prepara-
tions” (page 183), you can now upgrade your system:
1 Boot the system as for the installation, described in Section “System Start-Up
for Installation” (Chapter 1, Installation with YaST, ↑Reference). In YaST,
choose a language and select Update in the Installation Mode dialog. Do not
select New Installation. Also add repositories to make sure to get all available
software updated whenever possible. Find more information about installation
repositories in Section “Add-On Products” (Chapter 1, Installation with YaST,
↑Reference).
2 YaST determines if there are multiple root partitions. If there is only one,
continue with the next step. If there are several, select the right partition and
conrm with Next (/dev/sda3 was selected in the example in Section 16.1.1,
“Preparations” (page 183)). YaST reads the old fstab on this partition to analyze
and mount the le systems listed there.
WARNING: Persistent Device Names
All entries in /etc/fstab that specify partitions to be mounted using the
kernel-device name must be changed to any of the other supported
methods prior to performing an update. Kernel-device names are not per-
sistent and are therefore unreliable for use during the update process. This
184 Start-Up