filesystem: add bcachefs support

[stintel]

SUMMARY

Add support for bcachefs to the filesystem module.

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

filesystem

ADDITIONAL INFORMATION

Test playbook:

---
- hosts: localhost
  vars:
    img_file: /tmp/bcachefs.img
  tasks:
    - name: create 1GiB file
      community.general.filesize:
        path: "{{ img_file }}"
        size: 1GiB

    - name: create bcachefs filesystem on file
      ansible.legacy.filesystem:
        dev: "{{ img_file }}"
        fstype: bcachefs
        uuid: bfe441c5-93da-440b-8c9a-e807bc538abb

    - name: create bcachefs filesystem on file (no changes)
      ansible.legacy.filesystem:
        dev: "{{ img_file }}"
        force: False
        fstype: bcachefs

    - name: create bcachefs filesystem on file (force)
      ansible.legacy.filesystem:
        dev: "{{ img_file }}"
        force: True
        fstype: bcachefs

    - name: resize 1GiB file to 2GiB
      community.general.filesize:
        path: "{{ img_file }}"
        size: 2GiB

    - name: resize bcachefs filesystem on file
      ansible.legacy.filesystem:
        dev: "{{ img_file }}"
        fstype: bcachefs
        resizefs: True

Output:

PLAY [localhost] *****************************************************************************************************************************************

TASK [Gathering Facts] ***********************************************************************************************************************************
ok: [localhost]

TASK [create 1GiB file] **********************************************************************************************************************************
--- before
+++ after
@@ -1 +1 @@
-size: null
+size: 1073741824

changed: [localhost]

TASK [create bcachefs filesystem on file] ****************************************************************************************************************
changed: [localhost]

TASK [create bcachefs filesystem on file (no changes)] ***************************************************************************************************
ok: [localhost]

TASK [create bcachefs filesystem on file (force)] ********************************************************************************************************
changed: [localhost]

TASK [resize 1GiB file to 2GiB] **************************************************************************************************************************
--- before
+++ after
@@ -1 +1 @@
-size: 1073741824
+size: 2147483648

changed: [localhost]

TASK [resize bcachefs filesystem on file] ****************************************************************************************************************
changed: [localhost]

PLAY RECAP ***********************************************************************************************************************************************
localhost                  : ok=7    changed=5    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

[ansibullbot]

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[stintel]

The UUID checks are most likely failing because the util-linux version on those distros does not have support for bcachefs. I'll try to look at that over the weekend.

[felixfontein]

Thanks for your contribution! I've added some first comments below.

[stintel]

Would it be OK to limit the tests to Alpine >= 3.19 for now? That seems to be the only distribution with recent enough versions of both bcachefs-tools and util-linux used in the test matrix.

[felixfontein]

I would expect that at least with Arch Linux the tests should also pass, since Arch usually has very up to date packages. (https://archlinux.org/packages/core/x86_64/util-linux/, https://archlinux.org/packages/extra/x86_64/bcachefs-tools/)

[stintel]

You're right, looking at the versions I'd expect it to work. I modified the tests to run bcachefs related tasks only on Alpine and Arch Linux.

[felixfontein]

Sorry, I lost track of this (too many things to do). I'll merge this on the upcoming weekend if nobody objects. There's just one small change needed.

[patchback]

Backport to stable-8: 💚 backport PR created

✅ Backport PR branch: patchback/backports/stable-8/486c26b2247c37428c41a094ab7db593f3355734/pr-8126

Backported as #8251

🤖 @patchback
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[felixfontein]

@stintel thanks for your contribution!