Systemd 迈向一个大的整数版本发布

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Systemd Project and Release: The systemd project is preparing for a new release. Version 256-rc1 was released on April 25 with many changes and new features.
- New Format for Announcing Features: Lennart Poettering experimented with a new format this year by posting Mastodon threads to cover features in more detail. One thread on systemd's new run0 tool has generated substantial commentary.
- New Way to Find Configuration Files: Systemd now supports reading files from a directory whose name ends in ".v" to handle cases where it's important to have files from different versions of the same package.
- Encrypted Credentials for User Services: Systemd version 256 will support making credentials available to user services, expanding the usefulness of encrypted credentials.
- Working with Discoverable Disk Images: The release includes support for working with discoverable disk images (DDIs) in an unprivileged context, the last step to permit unprivileged systemd-nspawn containers.
- Configuring Settings with Encrypted Credentials: Systemd can now configure some settings by adding encrypted credentials, expanding the number of configurable settings.
- sd_notify() Improvements: Systemd supports sending sd_notify() messages to the host of a container and has added a new message when a target is fully activated.
- ProtectSystem Configuration Option: The ProtectSystem option can now be applied to the entire system instead of on a service-by-service basis, making the system more secure. It is now the default for systemd on a ramdisk.
- Quality-of-Life Improvement for systemd-homed: A shim has been added to intercept SSH logins for users with encrypted home directories and prompt for encryption credentials over the network.
Deprecation: Systemd is dropping support for version 1 control groups in favor of version 2 cgroups. A system with version 1 cgroups will cause systemd to fail with an error. There are other additions and deprecations in the release, which can be found in the project's NEWS file. Systemd releases usually have three or four release candidates approximately a week apart.