Note: Although multi-path upgrades from versions 2.5.x or 2.6.x to version 3.1.2
are supported, these upgrades may fail if the preflight check detects insufficient
space on the /boot partition. For example, if the appliance was upgraded from
version 2.5.4 to 2.6.1 and then to version 3.1, an upgrade to version 3.1.2 will fail
if insufficient /boot space is detected. This problem occurs because the /boot
partition is completely allocated on appliances that once used the older versions
and it cannot be resized. If you experience this problem, you must reimage the
appliance with the version that existed before the failed upgrade attempt, and then
upgrade to version 3.1.2. Using the example just described (version 2.6.1 to 3.1 to
3.1.2), the appliance must be reimaged with version 3.1 before upgrading it to
version 3.1.2.
Preflight check before the upgrade
For upgrades to versions 2.7.1 and later, the upgrade script runs a preflight check
to determine if the appliance is ready for an upgrade. The preflight check analyzes
several system parameters and provides information about what was found and
whether an upgrade can proceed. If the preflight check detects any issues that fail
to meet the upgrade requirements, the upgrade is not allowed to proceed. You must
address all of the reported issues before the upgrade is allowed.
Refer to the following topic for more information:
See “Pre-upgrade tasks for appliance upgrades” on page 18.
Note: Upgrades to version 2.7.1 and later are not supported if you have installed
Teradata binaries on the appliance. The RHEL operating system does not currently
support the use of these binaries. The upgrade cannot proceed if the preflight check
finds Teradata binaries on the appliance.
Third-party plug-ins for RHEL
Since all NetBackup appliances with version 2.6.1.2 and earlier use SLES version
third-party plug-ins, upgrades to version 2.7.1 and later require that these plug-ins
be replaced with the appropriate RHEL versions. If the preflight upgrade script
identifies any required RHEL third-party plug-ins that are not found, the upgrade is
not allowed to proceed.
8Introduction
About upgrades to NetBackup appliance software version 3.1.2 and the Red Hat Enterprise Linux operating
system
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