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synced 2024-09-14 20:13:21 +02:00
filesystem: fix 355 state absent (#1149)
* add support for filesystem removal (fix #355) - Add 'state' option, defaults to 'present'. - When state=absent, ignore other options (even 'dev' if the device doesn't exist) * test filesystem state=absent (+ check_mode + idempotency) * fix doc-required-mismatch * add changelog fragment * fix blkid return code * ext4dev may be deprecated * base checks on UUID instead * Update changelogs/fragments/1149-filesystem-fix-355-state-absent.yml Co-authored-by: Felix Fontein <felix@fontein.de> * Update plugins/modules/system/filesystem.py (version_added) Co-authored-by: Felix Fontein <felix@fontein.de> * use array for new run_command() calls; do not wipefs if no fs found * use dd as a fallback * do not use bare 'except' (pep8) * force string type * use dd anyway (wipefs not supported everywhere, possibly buggy with vfat, etc.) * do not truncate regular files; update changelog fragment * doc: update state description and an example; notice check_mode support * do not wipe mounted fs, fail instead * back to wipefs implementation * update test's main conditions * update changelog fragment * explicit types * fail state=absent on freebsd * remove doc-missing-type exceptions (2.9, 2.10, 2.11) Co-authored-by: Felix Fontein <felix@fontein.de>
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7 changed files with 194 additions and 34 deletions
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@ -0,0 +1,4 @@
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---
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bugfixes:
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- filesystem - add option ``state`` with default ``present``. When set to ``absent``, filesystem signatures are removed
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(https://github.com/ansible-collections/community.general/issues/355).
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@ -16,10 +16,24 @@ short_description: Makes a filesystem
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description:
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- This module creates a filesystem.
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options:
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state:
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description:
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- If C(state=present), the filesystem is created if it doesn't already
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exist, that is the default behaviour if I(state) is omitted.
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- If C(state=absent), filesystem signatures on I(dev) are wiped if it
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contains a filesystem (as known by C(blkid)).
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- When C(state=absent), all other options but I(dev) are ignored, and the
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module doesn't fail if the device I(dev) doesn't actually exist.
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- C(state=absent) is not supported and will fail on FreeBSD systems.
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type: str
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choices: [ present, absent ]
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default: present
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version_added: 1.3.0
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fstype:
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choices: [ btrfs, ext2, ext3, ext4, ext4dev, f2fs, lvm, ocfs2, reiserfs, xfs, vfat, swap ]
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description:
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- Filesystem type to be created.
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- Filesystem type to be created. This option is required with
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C(state=present) (or if I(state) is omitted).
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- reiserfs support was added in 2.2.
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- lvm support was added in 2.5.
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- since 2.5, I(dev) can be an image file.
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@ -27,11 +41,12 @@ options:
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- ocfs2 support was added in 2.6
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- f2fs support was added in 2.7
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- swap support was added in 2.8
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required: yes
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type: str
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aliases: [type]
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dev:
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description:
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- Target path to device or image file.
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type: path
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required: yes
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aliases: [device]
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force:
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@ -43,18 +58,22 @@ options:
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description:
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- If C(yes), if the block device and filesystem size differ, grow the filesystem into the space.
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- Supported for C(ext2), C(ext3), C(ext4), C(ext4dev), C(f2fs), C(lvm), C(xfs), C(vfat), C(swap) filesystems.
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- XFS Will only grow if mounted.
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- XFS Will only grow if mounted. Currently, the module is based on commands
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from C(util-linux) package to perform operations, so resizing of XFS is
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not supported on FreeBSD systems.
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- vFAT will likely fail if fatresize < 1.04.
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type: bool
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default: 'no'
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opts:
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description:
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- List of options to be passed to mkfs command.
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type: str
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requirements:
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- Uses tools related to the I(fstype) (C(mkfs)) and C(blkid) command. When I(resizefs) is enabled, C(blockdev) command is required too.
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notes:
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- Potential filesystem on I(dev) are checked using C(blkid), in case C(blkid) isn't able to detect an existing filesystem,
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this filesystem is overwritten even if I(force) is C(no).
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- This module supports I(check_mode).
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'''
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EXAMPLES = '''
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@ -68,6 +87,11 @@ EXAMPLES = '''
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fstype: ext4
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dev: /dev/sdb1
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opts: -cc
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- name: Blank filesystem signature on /dev/sdb1
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community.general.filesystem:
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dev: /dev/sdb1
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state: absent
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'''
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from distutils.version import LooseVersion
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@ -144,6 +168,22 @@ class Filesystem(object):
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cmd = "%s %s %s '%s'" % (mkfs, self.MKFS_FORCE_FLAGS, opts, dev)
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self.module.run_command(cmd, check_rc=True)
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def wipefs(self, dev):
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if platform.system() == 'FreeBSD':
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msg = "module param state=absent is currently not supported on this OS (FreeBSD)."
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self.module.fail_json(msg=msg)
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if self.module.check_mode:
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return
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# wipefs comes with util-linux package (as 'blockdev' & 'findmnt' above)
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# so it is not supported on FreeBSD. Even the use of dd as a fallback is
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# not doable here if it needs get_mountpoint() (to prevent corruption of
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# a mounted filesystem), since 'findmnt' is not available on FreeBSD.
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wipefs = self.module.get_bin_path('wipefs', required=True)
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cmd = [wipefs, "--all", dev.__str__()]
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self.module.run_command(cmd, check_rc=True)
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def grow_cmd(self, dev):
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cmd = self.module.get_bin_path(self.GROW, required=True)
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return [cmd, str(dev)]
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@ -369,34 +409,35 @@ def main():
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# There is no "single command" to manipulate filesystems, so we map them all out and their options
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module = AnsibleModule(
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argument_spec=dict(
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fstype=dict(required=True, aliases=['type'],
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choices=list(fstypes)),
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dev=dict(required=True, aliases=['device']),
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opts=dict(),
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state=dict(type='str', default='present', choices=['present', 'absent']),
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fstype=dict(type='str', aliases=['type'], choices=list(fstypes)),
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dev=dict(type='path', required=True, aliases=['device']),
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opts=dict(type='str'),
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force=dict(type='bool', default=False),
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resizefs=dict(type='bool', default=False),
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),
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required_if=[
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('state', 'present', ['fstype'])
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],
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supports_check_mode=True,
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)
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state = module.params['state']
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dev = module.params['dev']
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fstype = module.params['fstype']
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opts = module.params['opts']
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force = module.params['force']
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resizefs = module.params['resizefs']
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if fstype in friendly_names:
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fstype = friendly_names[fstype]
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changed = False
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try:
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klass = FILESYSTEMS[fstype]
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except KeyError:
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module.fail_json(changed=False, msg="module does not support this filesystem (%s) yet." % fstype)
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if not os.path.exists(dev):
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module.fail_json(msg="Device %s not found." % dev)
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msg = "Device %s not found." % dev
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if state == "present":
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module.fail_json(msg=msg)
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else:
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module.exit_json(msg=msg)
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dev = Device(module, dev)
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cmd = module.get_bin_path('blkid', required=True)
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# then this existing filesystem would be overwritten even if force isn't enabled.
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fs = raw_fs.strip()
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filesystem = klass(module)
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if state == "present":
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if fstype in friendly_names:
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fstype = friendly_names[fstype]
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same_fs = fs and FILESYSTEMS.get(fs) == FILESYSTEMS[fstype]
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if same_fs and not resizefs and not force:
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module.exit_json(changed=False)
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elif same_fs and resizefs:
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if not filesystem.GROW:
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module.fail_json(changed=False, msg="module does not support resizing %s filesystem yet." % fstype)
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try:
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klass = FILESYSTEMS[fstype]
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except KeyError:
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module.fail_json(changed=False, msg="module does not support this filesystem (%s) yet." % fstype)
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out = filesystem.grow(dev)
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filesystem = klass(module)
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module.exit_json(changed=True, msg=out)
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elif fs and not force:
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module.fail_json(msg="'%s' is already used as %s, use force=yes to overwrite" % (dev, fs), rc=rc, err=err)
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same_fs = fs and FILESYSTEMS.get(fs) == FILESYSTEMS[fstype]
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if same_fs and not resizefs and not force:
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module.exit_json(changed=False)
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elif same_fs and resizefs:
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if not filesystem.GROW:
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module.fail_json(changed=False, msg="module does not support resizing %s filesystem yet." % fstype)
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# create fs
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filesystem.create(opts, dev)
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changed = True
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out = filesystem.grow(dev)
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module.exit_json(changed=True, msg=out)
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elif fs and not force:
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module.fail_json(msg="'%s' is already used as %s, use force=yes to overwrite" % (dev, fs), rc=rc, err=err)
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# create fs
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filesystem.create(opts, dev)
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changed = True
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elif fs:
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# wipe fs signatures
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filesystem = Filesystem(module)
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filesystem.wipefs(dev)
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changed = True
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module.exit_json(changed=changed)
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@ -43,7 +43,12 @@
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- 'not (item.0.key == "f2fs" and ansible_distribution == "Ubuntu" and ansible_distribution_version is version("14.04", "<="))'
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- 'not (item.1 == "overwrite_another_fs" and ansible_system == "FreeBSD")'
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- 'not (item.1 == "remove_fs" and ansible_system == "FreeBSD")' # util-linux not available on FreeBSD
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# On CentOS 6 shippable containers, wipefs seems unable to remove vfat signatures
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- 'not (item.1 == "remove_fs" and item.0.key == "vfat" and ansible_distribution == "CentOS" and
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ansible_distribution_version is version("7.0", "<"))'
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# The xfsprogs package on newer versions of OpenSUSE (15+) require Python 3, we skip this on our Python 2 container
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# OpenSUSE 42.3 Python2 and the other py3 containers are not affected so we will continue to run that
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- 'not (item.0.key == "xfs" and ansible_os_family == "Suse" and ansible_python.version.major == 2 and ansible_distribution_major_version|int != 42)'
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loop: "{{ query('dict', tested_filesystems)|product(['create_fs', 'overwrite_another_fs'])|list }}"
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loop: "{{ query('dict', tested_filesystems)|product(['create_fs', 'overwrite_another_fs', 'remove_fs'])|list }}"
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98
tests/integration/targets/filesystem/tasks/remove_fs.yml
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98
tests/integration/targets/filesystem/tasks/remove_fs.yml
Normal file
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---
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# We assume 'create_fs' tests have passed.
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- name: filesystem creation
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filesystem:
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dev: '{{ dev }}'
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fstype: '{{ fstype }}'
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- name: get filesystem UUID with 'blkid'
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command:
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cmd: 'blkid -c /dev/null -o value -s UUID {{ dev }}'
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changed_when: false
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register: blkid_ref
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- name: Assert that a filesystem exists on top of the device
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assert:
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that:
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- blkid_ref.stdout | length > 0
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# Test check_mode first
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- name: filesystem removal (check mode)
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filesystem:
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dev: '{{ dev }}'
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state: absent
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register: wipefs
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check_mode: yes
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- name: get filesystem UUID with 'blkid' (should remain the same)
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command:
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cmd: 'blkid -c /dev/null -o value -s UUID {{ dev }}'
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changed_when: false
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register: blkid
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- name: Assert that the state changed but the filesystem still exists
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assert:
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that:
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- wipefs is changed
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- blkid.stdout == blkid_ref.stdout
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# Do it
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- name: filesystem removal
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filesystem:
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dev: '{{ dev }}'
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state: absent
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register: wipefs
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- name: get filesystem UUID with 'blkid' (should be empty)
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command:
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cmd: 'blkid -c /dev/null -o value -s UUID {{ dev }}'
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changed_when: false
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failed_when: false
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register: blkid
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- name: Assert that the state changed and the device has no filesystem
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assert:
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that:
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- wipefs is changed
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- blkid.stdout | length == 0
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- blkid.rc == 2
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# Do it again
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- name: filesystem removal (idempotency)
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filesystem:
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dev: '{{ dev }}'
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state: absent
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register: wipefs
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- name: Assert that the state did not change
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assert:
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that:
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- wipefs is not changed
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# and again
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- name: filesystem removal (idempotency, check mode)
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filesystem:
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dev: '{{ dev }}'
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state: absent
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register: wipefs
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check_mode: yes
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- name: Assert that the state did not change
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assert:
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that:
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- wipefs is not changed
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# By the way, test removal of a filesystem on unexistent device
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- name: filesystem removal (unexistent device)
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filesystem:
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dev: '/dev/unexistent_device'
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state: absent
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register: wipefs
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- name: Assert that the state did not change
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assert:
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that:
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- wipefs is not changed
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@ -1169,7 +1169,6 @@ plugins/modules/system/dconf.py pylint:blacklisted-name
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plugins/modules/system/dconf.py validate-modules:doc-missing-type
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plugins/modules/system/dconf.py validate-modules:parameter-type-not-in-doc
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plugins/modules/system/filesystem.py pylint:blacklisted-name
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plugins/modules/system/filesystem.py validate-modules:doc-missing-type
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plugins/modules/system/gconftool2.py pylint:blacklisted-name
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plugins/modules/system/gconftool2.py validate-modules:parameter-state-invalid-choice
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plugins/modules/system/gconftool2.py validate-modules:parameter-type-not-in-doc
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@ -1169,7 +1169,6 @@ plugins/modules/system/dconf.py pylint:blacklisted-name
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plugins/modules/system/dconf.py validate-modules:doc-missing-type
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plugins/modules/system/dconf.py validate-modules:parameter-type-not-in-doc
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plugins/modules/system/filesystem.py pylint:blacklisted-name
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plugins/modules/system/filesystem.py validate-modules:doc-missing-type
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plugins/modules/system/gconftool2.py pylint:blacklisted-name
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plugins/modules/system/gconftool2.py validate-modules:parameter-state-invalid-choice
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plugins/modules/system/gconftool2.py validate-modules:parameter-type-not-in-doc
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@ -921,7 +921,6 @@ plugins/modules/system/dconf.py pylint:blacklisted-name
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plugins/modules/system/dconf.py validate-modules:doc-missing-type
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plugins/modules/system/dconf.py validate-modules:parameter-type-not-in-doc
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plugins/modules/system/filesystem.py pylint:blacklisted-name
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plugins/modules/system/filesystem.py validate-modules:doc-missing-type
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plugins/modules/system/gconftool2.py pylint:blacklisted-name
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plugins/modules/system/gconftool2.py validate-modules:parameter-type-not-in-doc
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plugins/modules/system/interfaces_file.py pylint:blacklisted-name
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