[systemd-devel] [ANNOUNCE] systemd 217
lennart at poettering.net
Tue Oct 28 12:17:11 PDT 2014
Many new features, even more bugfixes!
CHANGES WITH 217:
* journalctl gained the new options -t/--identifier= to match
on the syslog identifier (aka "tag"), as well as --utc to
show log timestamps in the UTC timezone. journalctl now also
accepts -n/--lines=all to disable line capping in a pager.
* Services can notify the manager before they start a reload
(by sending RELOADING=1) or shutdown (by sending
STOPPING=1). This allows the manager to track and show the
internal state of daemons and closes a race condition when
the process is still running but has closed its D-Bus
* Services with Type=oneshot do not have to have any ExecStart
* User units are now loaded also from
$XDG_RUNTIME_DIR/systemd/user/. This is similar to the
/run/systemd/user directory that was already previously
supported, but is under the control of the user.
* Job timeouts (i.e. time-outs on the time a job that is
queued stays in the run queue) can now optionally result in
immediate reboot or power-off actions (JobTimeoutAction= and
JobTimeoutRebootArgument=). This is useful on ".target"
units, to limit the maximum time a target remains
undispatched in the run queue, and to trigger an emergency
operation in such a case. This is now used by default to
turn off the system if boot-up (as defined by everything in
basic.target) hangs and does not complete for at least
15min. Also, if power-off or reboot hang for at least 30min
an immediate power-off/reboot operation is triggered. This
functionality is particularly useful to increase reliability
on embedded devices, but also on laptops which might
accidentally get powered on when carried in a backpack and
whose boot stays stuck in a hard disk encryption passphrase
* systemd-logind can be configured to also handle lid switch
events even when the machine is docked or multiple displays
are attached (HandleLidSwitchDocked= option).
* A helper binary and a service have been added which can be
used to resume from hibernation in the initramfs. A
generator will parse the resume= option on the kernel
command-line to trigger resume.
* A user console daemon systemd-consoled has been
added. Currently, it is a preview, and will so far open a
single terminal on each session of the user marked as
* Route metrics can be specified for DHCP routes added by
* The SELinux context of socket-activated services can be set
from the information provided by the networking stack
* Userspace firmware loading support has been removed and
the minimum supported kernel version is thus bumped to 3.7.
* Timeout for udev workers has been increased from 1 to 3
minutes, but a warning will be printed after 1 minute to
help diagnose kernel modules that take a long time to load.
* Udev rules can now remove tags on devices with TAG-="foobar".
* systemd's readahead implementation has been removed. In many
circumstances it didn't give expected benefits even for
rotational disk drives and was becoming less relevant in the
age of SSDs. As none of the developers has been using
rotating media anymore, and nobody stepped up to actively
maintain this component of systemd it has now been removed.
* Swap units can use Discard= to specify discard options.
Discard options specified for swaps in /etc/fstab are now
* Docker containers are now detected as a separate type of
* The Password Agent protocol gained support for queries where
the user input is shown, useful e.g. for user names.
systemd-ask-password gained a new --echo option to turn that
* The default sysctl.d/ snippets will now set:
net.core.default_qdisc = fq_codel
This selects Fair Queuing Controlled Delay as the default
queuing discipline for network interfaces. fq_codel helps
fight the network bufferbloat problem. It is believed to be
a good default with no tuning required for most workloads.
Downstream distributions may override this choice. On 10Gbit
servers that do not do forwarding, "fq" may perform better.
Systems without a good clocksource should use "pfifo_fast".
* If kdbus is enabled during build a new option BusPolicy= is
available for service units, that allows locking all service
processes into a stricter bus policy, in order to limit
access to various bus services, or even hide most of them
from the service's view entirely.
* networkctl will now show the .network and .link file
networkd has applied to a specific interface.
* sd-login gained a new API call sd_session_get_desktop() to
query which desktop environment has been selected for a
* UNIX utmp support is now compile-time optional to support
* systemctl gained two new commands "add-wants" and
"add-requires" for pulling in units from specific targets
* If the word "rescue" is specified on the kernel command line
the system will now boot into rescue mode (aka
rescue.target), which was previously available only by
specifying "1" or "systemd.unit=rescue.target" on the kernel
command line. This new kernel command line option nicely
mirrors the already existing "emergency" kernel command line
* New kernel command line options mount.usr=, mount.usrflags=,
mount.usrfstype= have been added that match root=, rootflags=,
rootfstype= but allow mounting a specific file system to
* The $NOTIFY_SOCKET is now also passed to control processes of
services, not only the main process.
* This version reenables support for fsck's -l switch. This
means at least version v2.25 of util-linux is required for
operation, otherwise dead-locks on device nodes may
occur. Again: you need to update util-linux to at least
v2.25 when updating systemd to v217.
* The "multi-seat-x" tool has been removed from systemd, as
its functionality has been integrated into X servers 1.16,
and the tool is hence redundant. It is recommended to update
display managers invoking this tool to simply invoke X
directly from now on, again.
* Support for the new ALLOW_INTERACTIVE_AUTHORIZATION D-Bus
message flag has been added for all of systemd's PolicyKit
authenticated method calls has been added. In particular
this now allows optional interactive authorization via
PolicyKit for many of PID1's privileged operations such as
unit file enabling and disabling.
* "udevadm hwdb --update" learnt a new switch "--usr" for
placing the rebuilt hardware database in /usr instead of
/etc. When used only hardware database entries stored in
/usr will be used, and any user database entries in /etc are
ignored. This functionality is useful for vendors to ship a
pre-built database on systems where local configuration is
unnecessary or unlikely.
* Calendar time specifications in .timer units now also
understand the strings "semi-annually", "quarterly" and
"minutely" as shortcuts (in addition to the preexisting
"anually", "hourly", ...).
* systemd-tmpfiles will now correctly create files in /dev
at boot which are marked for creation only at boot. It is
recommended to always create static device nodes with 'c!'
and 'b!', so that they are created only at boot and not
overwritten at runtime.
* When the watchdog logic is used for a service (WatchdogSec=)
and the watchdog timeout is hit the service will now be
terminated with SIGABRT (instead of just SIGTERM), in order
to make sure a proper coredump and backtrace is
generated. This ensures that hanging services will result in
similar coredump/backtrace behaviour as services that hit a
Contributions from: Andreas Henriksson, Andrei Borzenkov,
Angus Gibson, Ansgar Burchardt, Ben Wolsieffer, Brandon L.
Black, Christian Hesse, Cristian Rodríguez, Daniel Buch,
Daniele Medri, Daniel Mack, Dan Williams, Dave Reisner, David
Herrmann, David Sommerseth, David Strauss, Emil Renner
Berthing, Eric Cook, Evangelos Foutras, Filipe Brandenburger,
Gustavo Sverzut Barbieri, Hans de Goede, Harald Hoyer, Hristo
Venev, Hugo Grostabussiat, Ivan Shapovalov, Jan Janssen, Jan
Synacek, Jonathan Liu, Juho Son, Karel Zak, Kay Sievers, Klaus
Purer, Koen Kooi, Lennart Poettering, Lukas Nykryn, Lukasz
Skalski, Łukasz Stelmach, Mantas Mikulėnas, Marcel Holtmann,
Marius Tessmann, Marko Myllynen, Martin Pitt, Michael Biebl,
Michael Marineau, Michael Olbrich, Michael Scherer, Michal
Schmidt, Michal Sekletar, Miroslav Lichvar, Patrik Flykt,
Philippe De Swert, Piotr Drąg, Rahul Sundaram, Richard
Weinberger, Robert Milasan, Ronny Chevalier, Ruben Kerkhof,
Santiago Vila, Sergey Ptashnick, Simon McVittie, Sjoerd
Simons, Stefan Brüns, Steven Allen, Steven Noonan, Susant
Sahani, Sylvain Plantefève, Thomas Hindoe Paaboel Andersen,
Timofey Titovets, Tobias Hunger, Tom Gundersen, Torstein
Husebø, Umut Tezduyar Lindskog, WaLyong Cho, Zbigniew
-- Berlin, 2014-10-28
Lennart Poettering, Red Hat
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