11b802372b
filesystem: xfs resize: minimal required increment (#11033)
Internally XFS uses allocation groups. Allocation groups have a maximum
size of 1 TiB - 1 block. For devices >= 4 TiB XFS uses max size
allocation groups. If a filesystem is extended and the last allocation
group is already at max size, a new allocation group is added. An
allocation group seems to require at least 64 4 KiB blocks.
For devices with integer TiB size (>4), this creates a filesystem that
has initially has 1 unused block per TiB size. The `resize` option
detects this unused space, and tries to resize the filesystem. The
xfs_growfs call is successful (exit 0), but does not increase the file
system size. This is detected as repeated change in the task.
Test case:
```
- hosts: localhost
tasks:
- ansible.builtin.command:
cmd: truncate -s 4T /media/xfs.img
creates: /media/xfs.img
notify: loopdev xfs
- ansible.builtin.meta: flush_handlers
- name: pickup xfs.img resize
ansible.builtin.command:
cmd: losetup -c /dev/loop0
changed_when: false
- community.general.filesystem:
dev: "/dev/loop0"
fstype: "xfs"
- ansible.posix.mount:
src: "/dev/loop0"
fstype: "xfs"
path: "/media/xfs"
state: "mounted"
# always shows a diff even for newly created filesystems
- community.general.filesystem:
dev: "/dev/loop0"
fstype: "xfs"
resizefs: true
handlers:
- name: loopdev xfs
ansible.builtin.command:
cmd: losetup /dev/loop0 /media/xfs.img
```
NB: If the last allocation group is not yet at max size, the filesystem
can be resized. Detecting this requires considering the XFS topology.
Other filesystems (at least ext4) also seem to require a minimum
increment after the initial device size, but seem to use the entire
device after initial creation.
Fun observation: creating a 64(+) TiB filesystem leaves a 64(+) block
gap at the end, that is allocated in a subsequent xfs_growfs call.
(cherry picked from commit
|
||
|---|---|---|
| .azure-pipelines | ||
| .github | ||
| changelogs | ||
| docs/docsite | ||
| LICENSES | ||
| meta | ||
| plugins | ||
| tests | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .mypy.ini | ||
| .yamllint | ||
| antsibull-nox.toml | ||
| CHANGELOG.md | ||
| CHANGELOG.md.license | ||
| CHANGELOG.rst | ||
| CHANGELOG.rst.license | ||
| commit-rights.md | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| galaxy.yml | ||
| noxfile.py | ||
| README.md | ||
| REUSE.toml | ||
| ruff.toml | ||
Community General Collection
This repository contains the community.general Ansible Collection. The collection is a part of the Ansible package and includes many modules and plugins supported by Ansible community which are not part of more specialized community collections.
You can find documentation for this collection on the Ansible docs site.
Please note that this collection does not support Windows targets. Only connection plugins included in this collection might support Windows targets, and will explicitly mention that in their documentation if they do so.
Code of Conduct
We follow Ansible Code of Conduct in all our interactions within this project.
If you encounter abusive behavior violating the Ansible Code of Conduct, please refer to the policy violations section of the Code of Conduct for information on how to raise a complaint.
Communication
-
Join the Ansible forum:
- Get Help: get help or help others. This is for questions about modules or plugins in the collection. Please add appropriate tags if you start new discussions.
- Tag
community-general: discuss the collection itself, instead of specific modules or plugins. - Social Spaces: gather and interact with fellow enthusiasts.
- News & Announcements: track project-wide announcements including social events.
-
The Ansible Bullhorn newsletter: used to announce releases and important changes.
For more information about communication, see the Ansible communication guide.
Tested with Ansible
Tested with the current ansible-core 2.17, ansible-core 2.18, ansible-core 2.19, ansible-core 2.20 releases and the current development version of ansible-core. Ansible-core versions before 2.17.0 are not supported. This includes all ansible-base 2.10 and Ansible 2.9 releases.
External requirements
Some modules and plugins require external libraries. Please check the requirements for each plugin or module you use in the documentation to find out which requirements are needed.
Included content
Please check the included content on the Ansible Galaxy page for this collection or the documentation on the Ansible docs site.
Using this collection
This collection is shipped with the Ansible package. So if you have it installed, no more action is required.
If you have a minimal installation (only Ansible Core installed) or you want to use the latest version of the collection along with the whole Ansible package, you need to install the collection from Ansible Galaxy manually with the ansible-galaxy command-line tool:
ansible-galaxy collection install community.general
You can also include it in a requirements.yml file and install it via ansible-galaxy collection install -r requirements.yml using the format:
collections:
- name: community.general
Note that if you install the collection manually, it will not be upgraded automatically when you upgrade the Ansible package. To upgrade the collection to the latest available version, run the following command:
ansible-galaxy collection install community.general --upgrade
You can also install a specific version of the collection, for example, if you need to downgrade when something is broken in the latest version (please report an issue in this repository). Use the following syntax where X.Y.Z can be any available version:
ansible-galaxy collection install community.general:==X.Y.Z
See Ansible Using collections for more details.
Contributing to this collection
The content of this collection is made by good people just like you, a community of individuals collaborating on making the world better through developing automation software.
We are actively accepting new contributors.
All types of contributions are very welcome.
You don't know how to start? Refer to our contribution guide!
The current maintainers are listed in the commit-rights.md file. If you have questions or need help, feel free to mention them in the proposals.
You can find more information in the developer guide for collections, and in the Ansible Community Guide.
Also for some notes specific to this collection see our CONTRIBUTING documentation.
Running tests
See here.
Collection maintenance
To learn how to maintain / become a maintainer of this collection, refer to:
It is necessary for maintainers of this collection to be subscribed to:
- The collection itself (the
Watchbutton →All Activityin the upper right corner of the repository's homepage). - The "Changes Impacting Collection Contributors and Maintainers" issue.
They also should be subscribed to Ansible's The Bullhorn newsletter.
Publishing New Version
See the Releasing guidelines to learn how to release this collection.
Release notes
See the changelog.
Roadmap
In general, we plan to release a major version every six months, and minor versions every two months. Major versions can contain breaking changes, while minor versions only contain new features and bugfixes.
See this issue for information on releasing, versioning, and deprecation.
More information
- Ansible Collection overview
- Ansible User guide
- Ansible Developer guide
- Ansible Community code of conduct
Licensing
This collection is primarily licensed and distributed as a whole under the GNU General Public License v3.0 or later.
See LICENSES/GPL-3.0-or-later.txt for the full text.
Parts of the collection are licensed under the BSD 2-Clause license, the MIT license, and the PSF 2.0 license.
All files have a machine readable SDPX-License-Identifier: comment denoting its respective license(s) or an equivalent entry in an accompanying .license file. Only changelog fragments (which will not be part of a release) are covered by a blanket statement in REUSE.toml. This conforms to the REUSE specification.