System information
156 System Analysis and Tuning Guide
fer to Section“The File /etc/sysconfig/bootloader” (Chapter10, The
Boot Loader GRUB, ↑Administration Guide).
12.1 Enabling and Configuring
Multiversion Support
Installing multiple versions of a software package (multiversion support) is not en-
abled by default. To enable this feature, proceed as follows:
1 Open /etc/zypp/zypp.conf with the editor of your choice as root.
2 Search for the string multiversion. To enable multiversion for all kernel pack-
ages capable of this feature, uncomment the following line
# multiversion = provides:multiversion(kernel)
3 To restrict multiversion support to certain kernel flavors, add the package names
as a comma-separated list, to the multiversion option in /etc/zypp/
zypp.conf—for example
multiversion = kernel-default,kernel-default-base,kernel-source
4 Save your changes.
12.1.1 Automatically Deleting Unused
Kernels
When frequently testing new kernels with multiversion support enabled, the boot
menu quickly becomes confusing. Since a /boot usually has got limited space you
also might run into trouble with /boot overflowing. While you may delete unused
kernel versions manually with YaST or Zypper (as described below), you can also
configure libzypp to automatically delete kernels no longer used. By default no
kernels are deleted.
1 Open /etc/zypp/zypp.conf with the editor of your choice as root.
2 Search for the string multiversion.kernels and activate this option by un-
commenting the line. This option takes a comma separated list of the following val-
ues