Deactivation Of Fully Superseded Smus; Support For The Ignore Package Presence Check Option - Cisco ASR 9000 Series User Configuration Manual

Upgrading and Managing Cisco IOS XR Software
• When downgrading to an image that does not support extended disk, the rollback points of the extended
disk will not be available on the downgraded image. For example, assume a case where the version1
(V1) image does not support the extended disk functionality and version2 (V2) image supports the
functionality. Upgrading from V1(disk0) to V2(disk1), in such a case, makes the rollback points of V1
available on V2. However, when downgrading from V2(disk1) to V1(disk0), the rollback points of V2
will not be available on V1. For more information about the rollback feature and rollback points, see
the Upgrading and Managing Software chapter.

Deactivation of fully superseded SMUs

Cisco IOS XR Software will accumulate a set of Software Maintenance Upgrades (SMUs) over time, where
an older SMU gets superceded by the latest SMU. For example, if SMU A was initially delivered to you, and
subsequently, as a result of a bug resolution, SMU B was delivered, then SMU A becomes the subset of SMU
B and SMU A is superceded by SMU B. In this case, SMU A is redundant and can be deactivated to clean
up the software package.
To deactivate all the fully superseded SMUs, use the install deactivate superseded command in the admin
mode.
RP/0/RSP0/CPU0: router(admin) # install deactivate superseded
To display the details of the SMUs that are superseded, use the show install superseded command in the
EXEC mode.
RP/0/RSP0/CPU0: router # show install superseded
Thu Feb 3 17:37:20.379 UTC
disk0:asr9k-px-4.3.0.CSCud93518-1.0.0 is fully superseded by
disk0:asr9k-px-4.3.0.CSCue23747-1.0.0

Support for the Ignore Package Presence Check Option

During any software package upgrade in Cisco IOS XR Software, two versions of the packages get stored,
both the previous version and the upgraded version. In Route Switch Processor 2 (RSP2), the disk space is
insufficient to hold all packages of these two versions. To address this, a new optional keyword,
ignore-pkg-presence-check, is added to the install activate command, which allows upgrading with lesser
number of packages. For example, assume a case where version1 (V1) of the software consists of packages
A, B, C, and D, and you want to upgrade to the version2 (V2) with only 3 packages (A, B, and C). The
ignore-pkg-presence-check option allows only packages A, B, and C to be upgraded to V2 and deactivates
package D of V1. Thus, an explicit deactivation of package D is not required and the user can add package
D of V1 after upgrading to V2.
To upgrade software with lesser number of packages, use the install activate [ignore-pkg-presence-check]
command in the admin mode.
RP/0/RSP0/CPU0: router(admin) # install activate [ignore-pkg-presence-check] V2 packages
Restrictions
The restrictions for this option are:
• The ignore-pkg-presence-check keyword is supported only with the install activate command and is
not supported with the install add activate command.
• When you upgrade using the ignore-pkg-presence-check option, the deactivation of packages always
happens synchronously, using the synchronous keyword in the install deactivate command.
Cisco ASR 9000 Series Aggregation Services Router System Management Configuration Guide, Release 5.1.x
Multiple Disks Support during Installations
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