Comment 11 for bug 2008248

Sorry, I may lost some information in my previous message

Follow the steps:

```
juju deploy cs:octavia --series focal
juju deploy cs:octavia-diskimage-retrofit --series focal
juju add-relation octavia-diskimage-retrofit octavia

juju upgrade-series 0 prepare jammy --force
# Fail on this step
juju upgrade-series 0 complete
```

The octavia/0 and octavia-diskimage-retrofit/0 will get into error status: hook failed: "post-series-upgrade"

The error message: [0]

Sorry, Joseph, just want to confirm the steps you mentioned is like below, right?

```
juju deploy cs:octavia --series focal
juju deploy cs:octavia-diskimage-retrofit --series focal
juju add-relation octavia-diskimage-retrofit octavia

juju upgrade-series 0 prepare jammy --force
juju upgrade-series 0 complete

# Then

juju set-application-base octavia jammy
```

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[0]: https://pastebin.ubuntu.com/p/6Hxn7gFJwR/