filesystem: add bcachefs support (#8126)

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

changelogs/fragments/8126-filesystem-bcachefs-support.yaml

@@ -0,0 +1,2 @@
+minor_changes:
+  - filesystem - add bcachefs support (https://github.com/ansible-collections/community.general/pull/8126).

plugins/modules/filesystem.py

@@ -40,11 +40,12 @@ options:
     default: present
     version_added: 1.3.0
   fstype:
-    choices: [ btrfs, ext2, ext3, ext4, ext4dev, f2fs, lvm, ocfs2, reiserfs, xfs, vfat, swap, ufs ]
+    choices: [ bcachefs, btrfs, ext2, ext3, ext4, ext4dev, f2fs, lvm, ocfs2, reiserfs, xfs, vfat, swap, ufs ]
     description:
       - Filesystem type to be created. This option is required with
         O(state=present) (or if O(state) is omitted).
       - ufs support has been added in community.general 3.4.0.
+      - bcachefs support has been added in community.general 8.6.0.
     type: str
     aliases: [type]
   dev:
@@ -67,7 +68,7 @@ options:
   resizefs:
     description:
       - If V(true), if the block device and filesystem size differ, grow the filesystem into the space.
-      - Supported for C(btrfs), C(ext2), C(ext3), C(ext4), C(ext4dev), C(f2fs), C(lvm), C(xfs), C(ufs) and C(vfat) filesystems.
+      - Supported for C(bcachefs), C(btrfs), C(ext2), C(ext3), C(ext4), C(ext4dev), C(f2fs), C(lvm), C(xfs), C(ufs) and C(vfat) filesystems.
         Attempts to resize other filesystem types will fail.
       - XFS Will only grow if mounted. Currently, the module is based on commands
         from C(util-linux) package to perform operations, so resizing of XFS is
@@ -86,7 +87,7 @@ options:
       - The UUID options specified in O(opts) take precedence over this value.
       - See xfs_admin(8) (C(xfs)), tune2fs(8) (C(ext2), C(ext3), C(ext4), C(ext4dev)) for possible values.
       - For O(fstype=lvm) the value is ignored, it resets the PV UUID if set.
-      - Supported for O(fstype) being one of C(ext2), C(ext3), C(ext4), C(ext4dev), C(lvm), or C(xfs).
+      - Supported for O(fstype) being one of C(bcachefs), C(ext2), C(ext3), C(ext4), C(ext4dev), C(lvm), or C(xfs).
       - This is B(not idempotent). Specifying this option will always result in a change.
       - Mutually exclusive with O(resizefs).
     type: str
@@ -405,6 +406,48 @@ class Reiserfs(Filesystem):
     MKFS_FORCE_FLAGS = ['-q']
 
 
+class Bcachefs(Filesystem):
+    MKFS = 'mkfs.bcachefs'
+    MKFS_FORCE_FLAGS = ['--force']
+    MKFS_SET_UUID_OPTIONS = ['-U', '--uuid']
+    INFO = 'bcachefs'
+    GROW = 'bcachefs'
+    GROW_MAX_SPACE_FLAGS = ['device', 'resize']
+
+    def get_fs_size(self, dev):
+        """Return size in bytes of filesystem on device (integer)."""
+        dummy, stdout, dummy = self.module.run_command([self.module.get_bin_path(self.INFO),
+                                                        'show-super', str(dev)], check_rc=True)
+
+        for line in stdout.splitlines():
+            if "Size: " in line:
+                parts = line.split()
+                unit = parts[2]
+
+                base = None
+                exp = None
+
+                units_2 = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"]
+                units_10 = ["B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"]
+
+                try:
+                    exp = units_2.index(unit)
+                    base = 1024
+                except ValueError:
+                    exp = units_10.index(unit)
+                    base = 1000
+
+                if exp == 0:
+                    value = int(parts[1])
+                else:
+                    value = float(parts[1])
+
+                if base is not None and exp is not None:
+                    return int(value * pow(base, exp))
+
+        raise ValueError(repr(stdout))
+
+
 class Btrfs(Filesystem):
     MKFS = 'mkfs.btrfs'
     INFO = 'btrfs'
@@ -567,6 +610,7 @@ class UFS(Filesystem):
 
 
 FILESYSTEMS = {
+    'bcachefs': Bcachefs,
     'ext2': Ext2,
     'ext3': Ext3,
     'ext4': Ext4,

tests/integration/targets/filesystem/defaults/main.yml

@@ -15,6 +15,7 @@ tested_filesystems:
   #     - 1.7.0 requires at least 30Mo
   #     - 1.10.0 requires at least 38Mo
   #     - resizefs asserts when initial fs is smaller than 60Mo and seems to require 1.10.0
+  bcachefs: {fssize: 20, grow: true, new_uuid: null}
   ext4: {fssize: 10, grow: true, new_uuid: 'random'}
   ext4dev: {fssize: 10, grow: true, new_uuid: 'random'}
   ext3: {fssize: 10, grow: true, new_uuid: 'random'}

tests/integration/targets/filesystem/tasks/main.yml

@@ -36,7 +36,7 @@
     # Not available: btrfs, lvm, f2fs, ocfs2
     # All BSD systems use swap fs, but only Linux needs mkswap
     # Supported: ext2/3/4 (e2fsprogs), xfs (xfsprogs), reiserfs (progsreiserfs), vfat
-    - 'not (ansible_system == "FreeBSD" and item.0.key in ["btrfs", "f2fs", "swap", "lvm", "ocfs2"])'
+    - 'not (ansible_system == "FreeBSD" and item.0.key in ["bcachefs", "btrfs", "f2fs", "swap", "lvm", "ocfs2"])'
     # Available on FreeBSD but not on testbed (util-linux conflicts with e2fsprogs): wipefs, mkfs.minix
     - 'not (ansible_system == "FreeBSD" and item.1 in ["overwrite_another_fs", "remove_fs"])'
 
@@ -46,6 +46,10 @@
 
     # Other limitations and corner cases
 
+    # bcachefs only on Alpine > 3.18 and Arch Linux for now
+    # other distributions have too old versions of bcachefs-tools and/or util-linux (blkid for UUID tests)
+    - 'ansible_distribution == "Alpine" and ansible_distribution_version is version("3.18", ">") and item.0.key == "bcachefs"'
+    - 'ansible_distribution == "Archlinux" and item.0.key == "bcachefs"'
     # f2fs-tools and reiserfs-utils packages not available with RHEL/CentOS on CI
     - 'not (ansible_distribution in ["CentOS", "RedHat"] and item.0.key in ["f2fs", "reiserfs"])'
     - 'not (ansible_os_family == "RedHat" and ansible_distribution_major_version is version("8", ">=") and

tests/integration/targets/filesystem/tasks/setup.yml

@@ -16,6 +16,16 @@
     - e2fsprogs
     - xfsprogs
 
+- name: "Install bcachefs tools"
+  ansible.builtin.package:
+    name: bcachefs-tools
+    state: present
+  when:
+    # bcachefs only on Alpine > 3.18 and Arch Linux for now
+    # other distributions have too old versions of bcachefs-tools and/or util-linux (blkid for UUID tests)
+    - ansible_distribution == "Alpine" and ansible_distribution_version is version("3.18", ">")
+    - ansible_distribution == "Archlinux"
+
 - name: "Install btrfs progs"
   ansible.builtin.package:
     name: btrfs-progs