Podman 5.0 migration

[deboer-tim]

Is your enhancement related to a problem? Please describe

Podman 5.0 is still in development, but it's likely that either configuration or machines are incompatible or at minimum a one-way conversion.

Describe the solution you'd like

We'll need to track what is going to work and what won'r; at a minimum we'll need a warning before upgrading, possibly with help to backup, remove, or help convert configuration/machines.

• [ ] https://github.com/containers/podman-desktop/issues/478
• [ ] https://github.com/containers/podman-desktop/issues/6355
• [ ] https://github.com/containers/podman-desktop/issues/6356
• [ ] https://github.com/containers/podman-desktop/issues/6357
• [ ] https://github.com/containers/podman-desktop/issues/6360
• [ ] https://github.com/containers/podman-desktop/issues/6207

Describe alternatives you've considered

No response

Additional context

No response

[afbjorklund]

=== Linux ===

The new version of Podman now requires QEMU 7.2.0, which makes it harder to use the system version on Linux.

• https://github.com/containers/podman/commit/656bf7b76447b2b14eb73be4497ef407180cf45b

Ubuntu	Podman Engine	QEMU System
20.04	3.4.2*	4.2
22.04	3.4.4	6.2
24.04	4.9.3	8.2

Meaning that both podman and qemu now needs installing from some alternative source, unless using "noble".

• #6225
• #6278

Or continue to run with Podman v4, instead of v5.

Maybe v4.9.3 (v4) will be like the new v1.9.3 (v1) ?

• https://github.com/boot2podman/machine#deprecated (v1.9.3)
• https://podman.io/blogs/2020/06/29/podman-v2-announce.html

[benoitf]

transforming this issue into an epic