[spm]: Handle enabled/disabled action for generated/transient units

[nazariig]

ERR log:

root@sonic:/home/admin# sudo sonic-package-manager install -y cpu-report==2.0.0
Execute systemctl action stop on cpu-report service
Execute systemctl action disable on cpu-report service
removed /usr/lib/systemd/system/cpu-report.service
removed /usr/local/bin/cpu-report.sh
removed /usr/bin/cpu-report.sh
removed /etc/sonic/cpu-report_reconcile
removed /etc/systemd/system/cpu-report.service.d
generated /usr/bin/cpu-report.sh
generated /usr/local/bin/cpu-report.sh
generated /usr/lib/systemd/system/cpu-report.service
cpu-report entry is added to AUTO_TECHSUPPORT_FEATURE table
Execute systemctl action enable on cpu-report service
Failed to enable unit: Unit /run/systemd/generator/cpu-report.service is transient or generated
cpu-report entry is added to AUTO_TECHSUPPORT_FEATURE table
removed /usr/lib/systemd/system/cpu-report.service
removed /usr/local/bin/cpu-report.sh
removed /usr/bin/cpu-report.sh
removed /etc/sonic/cpu-report_reconcile
removed /etc/systemd/system/cpu-report.service.d
generated /usr/bin/cpu-report.sh
generated /usr/local/bin/cpu-report.sh
generated /usr/lib/systemd/system/cpu-report.service
Execute systemctl action enable on cpu-report service
Failed to enable unit: Unit /run/systemd/generator/cpu-report.service is transient or generated
error: failed in rollback: Failed to execute "['systemctl', 'enable', 'cpu-report']"
Failed to install cpu-report==2.0.0: Failed to upgrade cpu-report: Failed to execute "['systemctl', 'enable', 'cpu-report']"

Steps to reproduce:

1. Add app repository

sudo sonic-package-manager repository add <app> <repo_url> --default-reference=1.0.0

2. Install app v1.0.0

sudo sonic-package-manager install <app>==1.0.0 -y

3. Enable the feature and wait for container to come up

sudo config feature state <app> enabled

4. Upgrade to v2.0.0 — THIS triggers the bug

sudo sonic-package-manager install -y <app>==2.0.0

Sample:

SHELL:

root@sonic:/home/admin# sonic-package-manager install cpu-report==2.0.0 -y
Execute systemctl action stop on cpu-report service
Execute systemctl action disable on cpu-report service
warning: Skipping systemctl disable for generated/transient unit cpu-report
removed /usr/lib/systemd/system/cpu-report.service
removed /usr/local/bin/cpu-report.sh
removed /usr/bin/cpu-report.sh
removed /etc/sonic/cpu-report_reconcile
removed /etc/systemd/system/cpu-report.service.d
generated /usr/bin/cpu-report.sh
generated /usr/local/bin/cpu-report.sh
generated /usr/lib/systemd/system/cpu-report.service
cpu-report entry is added to AUTO_TECHSUPPORT_FEATURE table
Execute systemctl action enable on cpu-report service
warning: Skipping systemctl enable for generated/transient unit cpu-report
Execute systemctl action start on cpu-report service

SYSLOG:

2026 Feb 10 16:18:55.531288 sonic INFO sonic-package-manager: Execute systemctl action disable on cpu-report service
2026 Feb 10 16:18:55.541984 sonic WARNING sonic-package-manager: Skipping systemctl disable for generated/transient unit cpu-report
2026 Feb 10 16:18:55.542262 sonic INFO sonic-package-manager: removed /usr/lib/systemd/system/cpu-report.service
2026 Feb 10 16:18:55.542481 sonic INFO sonic-package-manager: removed /usr/local/bin/cpu-report.sh
2026 Feb 10 16:18:55.542676 sonic INFO sonic-package-manager: removed /usr/bin/cpu-report.sh
2026 Feb 10 16:18:55.542861 sonic INFO sonic-package-manager: removed /etc/sonic/cpu-report_reconcile
2026 Feb 10 16:18:55.543674 sonic INFO sonic-package-manager: removed /etc/systemd/system/cpu-report.service.d
2026 Feb 10 16:18:56.190582 sonic INFO sonic-package-manager: generated /usr/bin/cpu-report.sh
2026 Feb 10 16:18:56.201750 sonic INFO sonic-package-manager: generated /usr/local/bin/cpu-report.sh
2026 Feb 10 16:18:56.218809 sonic INFO sonic-package-manager: generated /usr/lib/systemd/system/cpu-report.service
2026 Feb 10 16:18:56.894541 sonic INFO sonic-package-manager: cpu-report entry is added to AUTO_TECHSUPPORT_FEATURE table
2026 Feb 10 16:18:56.894689 sonic INFO sonic-package-manager: Execute systemctl action enable on cpu-report service
2026 Feb 10 16:18:56.905258 sonic WARNING sonic-package-manager: Skipping systemctl enable for generated/transient unit cpu-report
2026 Feb 10 16:18:56.905380 sonic INFO sonic-package-manager: Execute systemctl action start on cpu-report service

System logger fix also resolves the issue of missing application tag and very first word of the message:

2026 Feb 10 14:31:39.193944 sonic WARNING systemctl enable for generated/transient unit cpu-report

What I did

How I did it

How to verify it

Previous command output (if the output of a command-line utility has changed)

New command output (if the output of a command-line utility has changed)

[ayurkiv-nvda]

LGTM