1. Proposed title of this feature request

   [RFE] recognize and apply /etc/subuid /etc/subgid modifications

3. What is the nature and description of the request?

   For users starting podman the first time without any subuid / subgid mapping on a RHEL Workstation
   a namespace is created and kept alive by the "podman pause" process. If the configuration of subuid /
   subgid for the same user is modified, podman does not recognize until:
   
   - Logout / Login -> The graphical working environment is gone and has to be re-opened.

   - Kill podman pause process -> Killing a process feels not like intended.

   - podman-system-migrate -> It's very likely this command is unknown to new users.

4. Why does the customer need this? (List the business requirements here)

   - general improvement

5. How would the customer like to achieve this? (List the functional requirements here)

   - Podman shall re-read /etc/subuid as appropriate so it can detect the user has been added in
     the meantime (of course it can write a message about this to stdout).

6. For each functional requirement listed, specify how Red Hat and the customer can test to confirm the requirement is successfully implemented.

   1) Execute a podman command without mapping configured -> check podman pause process is there
   2) Adjust the subuid / subgid mappings for a logged in user
   3) Try to start a rootless container as the logged in user
   4) It works with the updated configuration in /etc/subuid and /etc/subgid

7. Is there already an existing RFE upstream or in Red Hat Bugzilla?

   - not known

8. Does the customer have any specific timeline dependencies and which release would they like to target (i.e. RHEL8, RHEL9)?

   - no asap

9. Is the sales team involved in this request and do they have any additional input?

   - no

10. List any affected packages or components.

   - podman-*
   - probably kernel-*

11. Would the customer be able to assist in testing this functionality if implemented?

   - yes