systemd 252-rc1 Introduces New systemd-measure Tool, Other New Features

Written by Michael Larabel in systemd on 7 October 2022 at 01:10 PM EDT. 33 Comments
SYSTEMD --
Systemd 252-rc1 is out as the first test candidate ahead of this next big feature release for this dominant Linux init systemd. Systemd 252 has been working on a new "systemd-measure" tool and a wide variety of other changes.

As part of today's systemd 252-rc1 release is a warning that they intend to eliminate cgroups v1 support after the end of 2023. Thankfully most modern Linux distributions have been running with cgroups v2, but this is a warning to all others. Systemd is also planning to remove support for split-usr and unmerged-usr handling in H2'2023 as a more pressing warning for some Linux distributions.

New with systemd 252-rc1 are features including:

- systemd-measure has been added as a helper to precalculate PCR measurements to make it easier facilitating TPM2 policies.

- Systemd will set a "support-ended" taint flag if it detects the OS image is past its end-of-support date. This goes along with os-release gaining a new "SUPPORT_END=" field for specifying a date when the OS support is considered then unsupported.

- New settings of ConditionCredential= and AssertCredential= for skipping/failing units if a certain credential is not provided.

- DefaultDeviceTimeoutSec= can be used for specifying the default timeout for devices.

- A change to allow for more resource isolation between different user services competing for the CPU.

- Support with systemd for a full preset in the "first boot" condition rather than just enable-only.

- C.UTF-8 is now used as the default locale when nothing else is configured.

- New watchdog-related D-Bus properties are now published by systemd.

- The UEFI monotonic boot counter is now included in the random seed as additional entropy.

- Systemd boot support for booting in EFI mixed mode for a 64-bit kernel with 32-bit UEFI firmware is now supported.

- Improved detection of Parallels and KubeVirt virtualization.

- OpenSSL is now the default crypto back-end for systemd-resolved while GnuTLS is still supported.

- Systemd-repart now supports creating SquashFS partitions as well as dm-verity partitions.

- systemd-oomd now sends a "Killed" D-Bus signal when a cgroup is killed.


The full list of changes and more information on systemd 252-rc1 is available via GitHub.
Related News
About The Author
Author picture

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.

Popular News This Week