PosixFS: Make PosixFS non-collaborative mode the new install default for User Storage

[dragotin]

Description

This story describes the tasks that need to be done to make the non-collaborative PosixFS the standard for new installations.

User Stories

• As an OpenCloud User I want a flawless new installation with non-collaborative PosixFS

Value

With that, OpenCloud manages the data in a human readable file tree. The grows the confidence.

Acceptance Criteria

• OpenCloud just starts with PosixFS non collaborative [posix] change storage users default to posixfs #237
• CI runs on PosixFS non collaborative
• System storage remains decomposed
• Issue Default posixfs setup breaks when user is renamed #192 needs to be decided & fixed
• Documentation is updated
• A newly installed OpenCloud uses the non-collaborative mode of PosixFS.
  • this would require checking the on disk layout ... I'd recommend documenting a breaking change. Users have to configure the ocis filesystem driver if they want to use opencloud with their old data.
• Upgrades stay with their setting, which is probably Decomposed FS the ocis driver.

Definition of ready

• Everybody needs to understand the value written in the user story
• Acceptance criteria have to be defined
• All dependencies of the user story need to be identified
• Feature should be seen from an end user perspective
• Story has to be estimated
• Story points need to be less than 20

Definition of done

• Functional requirements
  • Functionality described in the user story works
  • Acceptance criteria are fulfilled
• Quality
  • Code review happened
  • CI is green (that includes new and existing automated tests)
  • Critical code received unit tests by the developer
• Non-functional requirements
  • No sonar cloud issues
• Configuration changes
  • The next branch of the OpenCloud charts is compatible

[kulmann]

@dragotin please close if it is ok to do so. We've made the switch. We didn't tick all the boxes from the todo list.