When using Oracle Unbreakable Enterprise Kernel, Oracle Linux 7, Oracle Linux 8, Oracle Linux 9, or SUSE Linux Enterprise Server

For some versions of Linux, such as Oracle Unbreakable Enterprise Kernel, Oracle Linux 7, Oracle Linux 8, Oracle Linux 9, or SUSE LINUX Enterprise Server^#, you need to uninstall HDLM before updating a kernel package or applying an OS update package.

After HDLM is removed, the mappings between HDLM devices and LDEV information are not inherited even if you reinstall HDLM. The procedures provided here assume that you want the mappings between HDLM devices and LDEV information inherited.

If the mappings between HDLM devices and LDEV information do not need to be inherited, the procedures provided here are unnecessary. Remove HDLM by following the procedure in REMOVING_HDLM_LEVEL1=GUID-C4EFDC2B-5FAF-446A-B9FA-B67EE4DBA3F8=2=EN=.html, and then update the kernel package or apply the OS update package. Afterwards, follow the procedure in INSTALLING_HDLM=GUID-5CB76692-AB29-4BE0-8F86-24CF0597288B=3=EN=.html to install HDLM again.

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This applies to combinations of kernel versions for which a version upgrade cannot be performed while HDLM for Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9 is installed.

These combinations are those indicated by an × in the following tables.

• UPDATING_KERNEL_PACKAGES_AND_APPLYING_OS_UPDATE_PACKAGES=GUID-ECAA03CC-C993-4FDC-A30F-026220B5B5F5=5=EN=.html#GUID-ECAA03CC-C993-4FDC-A30F-026220B5B5F5__HYO04101_V0851

• UPDATING_KERNEL_PACKAGES_AND_APPLYING_OS_UPDATE_PACKAGES=GUID-ECAA03CC-C993-4FDC-A30F-026220B5B5F5=5=EN=.html#GUID-ECAA03CC-C993-4FDC-A30F-026220B5B5F5__HYO_04102_V0884

• UPDATING_KERNEL_PACKAGES_AND_APPLYING_OS_UPDATE_PACKAGES=GUID-ECAA03CC-C993-4FDC-A30F-026220B5B5F5=5=EN=.html#GUID-ECAA03CC-C993-4FDC-A30F-026220B5B5F5__HYO_04102_V0887