* NETWORK INTERFACE DEVICE NAMING CHANGES: systemd-udevd's "net_id"
builtin may name network interfaces differently than in previous
- versions. SR-IOV virtual functions and NPAR partitions with PCI
- function numbers of 8 and above will be named more predictably,
- and udev may generate names based on PCI slot number in some cases
+ versions. SR-IOV virtual functions and NPAR partitions with PCI
+ function numbers of 8 and above will be named more predictably, and
+ udev may generate names based on the PCI slot number in some cases
where it previously did not.
* AF_INET and AF_INET6 are dropped from RestrictAddressFamilies= in
* systemd-tmpfiles will now print a notice whenever it encounters
tmpfiles.d/ lines referencing the /var/run/ directory. It will
recommend reworking them to use the /run/ directory instead (for
- which /var/run/ is simply a symlinked compatibility alias). This is
- recommended, so that systemd-tmpfiles can properly detect line
- conflicts and merge lines referencing the same files by both paths,
- without having to access them.
+ which /var/run/ is simply a symlinked compatibility alias). This way
+ systemd-tmpfiles can properly detect line conflicts and merge lines
+ referencing the same file by two paths, without having to access
+ them.
* systemctl disable/unmask/preset/preset-all cannot be used with
--runtime. Previously this was allowed, but resulted in unintuitive
- behaviour that wasn't useful.
-
- * sd-boot acquire new loader configuration settings for optionally
- turning off Windows and MacOS boot partition discovery as well as
- reboot-into-firmware menu items. It also should be able to pick a
- better screen resolution for HiDPI systems, and now provides loader
+ behaviour that wasn't useful. systemctl disable/unmask will now
+ undo both runtime and persistent enablement/masking, i.e. it will
+ remove any relevant symlinks both in /run and /etc.
+
+ * sd-boot acquired new loader configuration settings to optionally turn
+ off Windows and MacOS boot partition discovery as well as
+ reboot-into-firmware menu items. It is also able to pick a better
+ screen resolution for HiDPI systems, and now provides loader
configuration settings to change the resolution explicitly.
* The systemd-resolve tool has been renamed to resolvectl (it also
remains available under the old name, for compatibility), and its
interface is now verb-based, similar in style to the other <xyz>ctl
- tools, such as systemctl or loginctl. Also, the tool may now be
- linked to the "resolveconf" name, in which case it will take
- arguments and input compatible with the Debian and FreeBSD resolvconf
- tool.
+ tools, such as systemctl or loginctl.
+
+ * The resolvectl/systemd-resolve tool also provides 'resolveconf'
+ compatibility. It may be symlinked under the 'resolveconf' name, in
+ which case it will take arguments and input compatible with the
+ Debian and FreeBSD resolvconf tool.
* Support for suspend-then-hibernate has been added, i.e. a sleep mode
where the system initially suspends, and after a time-out resumes and
will be compressed, smaller ones will not. Previously this threshold
was not configurable and set to 512.
- * A new system.conf NoNewPrivileges= is now available which may be used
- to turn off acquiring of new privileges system-wide (i.e. set Linux'
- PR_SET_NO_NEW_PRIVS for PID 1 itself, and thus also all its
- children). Note that turning this option on means setuid binaries and
- file system capabilities lose their special powers. While turning on
- this option is a big step towards a more secure system, doing so is
- likely to break numerous pre-existing UNIX tools, in particular su
- and sudo.
+ * A new system.conf setting NoNewPrivileges= is now available which may
+ be used to turn off acquisition of new privileges system-wide
+ (i.e. set Linux' PR_SET_NO_NEW_PRIVS for PID 1 itself, and thus also
+ for all its children). Note that turning this option on means setuid
+ binaries and file system capabilities lose their special powers.
+ While turning on this option is a big step towards a more secure
+ system, doing so is likely to break numerous pre-existing UNIX tools,
+ in particular su and sudo.
* A new service systemd-time-sync-wait.service has been added. If
enabled it will delay the time-sync.target unit at boot until time
- synchronization has been recieved from the network. This
+ synchronization has been received from the network. This
functionality is useful on systems lacking a local RTC or where it is
acceptable that the boot process shall be delayed by external network
services.
write offset, on kernels new enough to support this. This means swap
files should work for hibernation now.
- * When loading unit files, systemd will now look for drop-in unit file
- extension at additional places. Previously, for a unit file name
+ * When loading unit files, systemd will now look for drop-in unit files
+ extensions in additional places. Previously, for a unit file name
"foo-bar-baz.service" it would look for dropin files in
"foo-bar-baz.service.d/*.conf". Now, it will also look in
"foo-bar-.service.d/*.conf" and "foo-.service.d/", i.e. at the
service name truncated after all inner dashes. This scheme allows
writing drop-ins easily that apply to a whole set of unit files at
once. It's particularly useful for mount and slice units (as their
- naming is prefix based anyway), but is also useful for service and
- other units, for packages that install multiple unit files at once,
+ naming is prefix based), but is also useful for service and other
+ units, for packages that install multiple unit files at once,
following a strict naming regime of beginning the unit file name with
- the package's name. Two new specifiers are now supported while
- parsing unit files, to match this: %j and %J are replaced by the part
- of the unit name following the last dash.
+ the package's name. Two new specifiers are now supported in unit
+ files to match this: %j and %J are replaced by the part of the unit
+ name following the last dash.
+
+ * Unit files and other configuration files that support specifier
+ expansion now understand another two new specifiers: %T and %V will
+ resolve to /tmp and /var/tmp respectively, or whatever temporary
+ directory has been set for the calling user.
* The ExecStart= lines of unit files are no longer required to
reference absolute paths. If non-absolute paths are specified the
specified binary name is searched within the service manager's
- built-in $PATH. It's generally recommended to continue to use
- absolute paths for all binaries specified in unit files.
+ built-in $PATH, which may be queried with 'systemd-path
+ search-binaries-default'. It's generally recommended to continue to
+ use absolute paths for all binaries specified in unit files.
+
+ * Units gained a new load state "bad-setting", which is used when a
+ unit file was loaded, but contained fatal errors which prevent it
+ from being started (for example, an ExecStart= path which references
+ a non-existent executable).
* coredumpctl's "gdb" verb has been renamed to "debug", in order to
support alternative debuggers, for example lldb. The old name
continues to be available however, for compatibility reasons. Use the
- new --debugger= switch and $SYSTEMD_DEBUGGER environment variable to
- pick an alternative debugger instead of the default of gdb.
+ new --debugger= switch or the $SYSTEMD_DEBUGGER environment variable
+ to pick an alternative debugger instead of the default gdb.
* systemctl and the other tools will now output escape sequences that
generate proper clickable hyperlinks in various terminal emulators
"less" pager doesn't support this yet, hence this functionality is
currently automatically turned off when a pager is started (which
happens quite often due to auto-paging). We hope to remove this
- limitation as soon as "less" learns these escape sequences too. This
- new behaviour may also be turned off explicitly with the
- $SYSTEMD_URLIFY environment variable. For details on these escape
- sequences see:
+ limitation as soon as "less" learns these escape sequences. This new
+ behaviour may also be turned off explicitly with the $SYSTEMD_URLIFY
+ environment variable. For details on these escape sequences see:
https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
* networkd's .network files now support a new IPv6MTUBytes= option for
* networkd will now automatically make use of the kernel's route
expiration feature, if it is available.
- * udevd's .link files now support setting the number of Rx/Tx channels,
- using the RxChannels=, TxChannels=, OtherChannels=,
- CombinedChannels=. Support for UDPSegmentationOffload= has been
- removed, given its limited support in hardware, and waning software
- support.
+ * udevd's .link files now support setting the number of receive and
+ transmit channels, using the RxChannels=, TxChannels=,
+ OtherChannels=, CombinedChannels= settings.
+
+ * Support for UDPSegmentationOffload= has been removed, given its
+ limited support in hardware, and waning software support.
* networkd's .netdev files now support creating "netdevsim" interfaces.
* PID 1 learnt a new bus call GetUnitByControlGroup() which may be used
to query the unit belonging to a specific kernel control group.
- * systemd-analyze learnt a new verb "cat-config", which may be used to
+ * systemd-analyze gained a new verb "cat-config", which may be used to
dump the contents of any configuration file, with all its matching
drop-in files added in, and honouring the usual search and masking
logic applied to systemd configuration files. For example use
"systemd-analyze cat-config systemd/system.conf" to get the complete
system configuration file of systemd how it would be loaded by PID 1
- itself. Similar to this various tools, such as systemd-tmpfiles or
- systemd-sysusers learnt new option "--cat-config", which do
+ itself. Similar to this, various tools such as systemd-tmpfiles or
+ systemd-sysusers, gained a new option "--cat-config", which does the
corresponding operation for their own configuration settings. For
example, "systemd-tmpfiles --cat-config" will now output the full
list of tmpfiles.d/ lines in place.
* systemd-nspawn gained a new --rlimit= switch for setting initial
resource limits for the container payload. There's a new switch
- --hostname= for explicitly overriding the container's hostname. A new
+ --hostname= to explicitly override the container's hostname. A new
--no-new-privileges= switch may be used to control the
PR_SET_NO_NEW_PRIVS flag for the container payload. A new
--oom-score-adjust= switch controls the OOM scoring adjustment value
for the payload. The new --cpu-affinity= switch controls the CPU
affinity of the container payload. The new --resolv-conf= switch
allows more detailed control of /etc/resolv.conf handling of the
- container. Similar, the new --timezone= switch allows more detailed
+ container. Similarly, the new --timezone= switch allows more detailed
control of /etc/localtime handling of the container.
- * systemd-detect-virt learnt a new --list switch, which will print a
+ * systemd-detect-virt gained a new --list switch, which will print a
list of all currently known VM and container environments.
- * Support for the new "Portable Services" concept has been added, see
+ * Support for "Portable Services" has been added, see
doc/PORTABLE_SERVICES.md for details. Currently, the support is still
- experimental, but this is expected to change soon. Reflecting the
- experimental state the "portablectl" binary is not installed into
+ experimental, but this is expected to change soon. Reflecting this
+ experimental state, the "portablectl" binary is not installed into
/usr/bin yet. The binary has to be called with the full path
/usr/lib/systemd/portablectl instead.
* A new --dump-bus-properties switch has been added to the systemd
binary, which may be used to dump all supported D-Bus properties.
-
- * Unit files and other configuration files that support specifier
- expansion now understand two new specifiers: %T and %V will resolve
- to /tmp and /var/tmp respectively, or whatever temporary directory
- has been set for the calling user.
+ (Options which are still supported, but are deprecated, are *not*
+ shown.)
* sd-bus gained a set of new calls:
sd_bus_slot_set_floating()/sd_bus_slot_get_floating() may be used to
* sd-event and sd-bus gained support for calling special user-supplied
destructor functions for userdata pointers associated with
- sd_event_source, sd_bus_slot and sd_bus_track objects.
+ sd_event_source, sd_bus_slot, and sd_bus_track objects. For this new
+ functions sd_bus_slot_set_destroy_callback,
+ sd_bus_slot_get_destroy_callback, sd_bus_track_set_destroy_callback,
+ sd_bus_track_get_destroy_callback,
+ sd_event_source_set_destroy_callback,
+ sd_event_source_get_destroy_callback have been added.
* The "net.ipv4.tcp_ecn" sysctl will now be turned on by default.
* PID 1 will now automatically reschedule .timer units whenever the
- local timezone changes. (They previously got rescheduled already
+ local timezone changes. (They previously got rescheduled
automatically when the system clock changed.)
* New documentation has been added to document cgroups delegation,
systemd.service_watchdogs= for controlling the same.
* Two new "log-level" and "log-target" options for systemd-analyze were
- addded that merge the now deprecated get-log-level, set-log-level and
+ added that merge the now deprecated get-log-level, set-log-level and
get-log-target, set-log-target pairs. The deprecated options are still
understood for backwards compatibility. The two new options print the
current value when no arguments are given, and set them when a
(domain search list).
* systemd-networkd gained support for serving IPv6 address ranges using
- the Router Advertisment protocol. The new .network configuration
+ the Router Advertisement protocol. The new .network configuration
section [IPv6Prefix] may be used to configure the ranges to
serve. This is implemented based on a new, minimal, native server
implementation of RA.
counted multiple times, if it takes multiple references.
* sd-bus gained new API calls sd_bus_set_exit_on_disconnect() and
- sd_bus_get_exit_on_disconnect(). They may be used to to make a
+ sd_bus_get_exit_on_disconnect(). They may be used to make a
process using sd-bus automatically exit if the bus connection is
severed.
projects / thirdparty / systemd.git / blobdiff