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| -rw-r--r-- | NEWS | 87 |
1 files changed, 87 insertions, 0 deletions
@@ -1,5 +1,92 @@ systemd System and Service Manager +CHANGES WITH 228: + + * When creating transient services via the bus API it is now + possible to pass in a set of file descriptors to use as + STDIN/STDOUT/STDERR for the invoked process. + + * A number of properties previously only settable in unit + files are now also available as properties to set when + creating transient units programmatically via the bus, as it + is exposed with systemd-run's --property= + setting. Specifically, these are: SyslogIdentifier=, + SyslogLevelPrefix=, TimerSlackNSec=, OOMScoreAdjust=, + EnvironmentFile=, ReadWriteDirectories=, + ReadOnlyDirectories=, InaccessibleDirectories=, + ProtectSystem=, ProtectHome=, RuntimeDirectory=. + + * Any reference to /etc/mtab has been dropped from + systemd. The file has been obsolete since a while, but + systemd refused to work on systems where it was incorrectly + set up (it should be a symlink or non-existant). Please make + sure to update to util-linux 2.27.1 or newer in conjunction + with this systemd release, which also drops any reference to + /etc/mtab. If you maintain a distribution make sure that no + software you package still references it, as this is a + likely source of bugs. There's also a glibc bug pending, + asking for removal of any reference to the file: + + https://sourceware.org/bugzilla/show_bug.cgi?id=19108 + + * The compression framing format used by the journal or + coredump processing has changed to be in line with what the + official LZ4 tools generate. LZ4 compression support in + systemd was considered unsupported previously, as the format + was not compatible with the normal tools. With this release + this has changed now, and it is hence safe for downstream + distributions to turn it on. While not compressing as well + as the XZ,LZ4 is substantially faster, which makes + it a good default choice for the compression logic in the + journal and in coredump handling. + + * Wherever systemd expects a calendar timestamp specification + (like in journalctl's --since= and --until= switches) UTC + timestamps are now supported. Timestamps suffixed with "UTC" + are now considered to be in Universal Time Coordinated + instead of the local timezone. Also, timestamps may now + optionally be specified with a sub-second accuracy. Both of + these additions also apply to recurring calendar event + specification, such as OnCalendar= in timer units. + + * systemd-tmpfiles learned two new line types "q" and "Q" that + operate like "v", but also set up a basic btrfs quota + hierarchy when used on a btrfs file system with quota + enabled. + + * systemd-detect-virt gained a new --chroot switch to detect + whether execution takes place in a chroot() environment. + + * CPUAffinity= now takes CPU index ranges in addition to just + individual indexes. + + * systemd will now bump the net.unix.max_dgram_qlen to 512 by + default now (kernel default is 16). This is beneficial for + avoiding blocking on AF_UNIX/SOCK_DGRAM sockets since it + allows substantially larger numbers of queued + datagrams. This should increase the capability of systemd to + parallelize boot-up, as logging and sd_notify() are unlikely + to stall execution anymore. If you need to change the value + from the new defaults, use the usual sysctl.d/ snippets. + + * The various memory-related resource limit settings (such as + LimitAS=) now understand the usual K, M, G, ... suffixes to + the base of 1024 (IEC). Similar, the time-related settings + understand the usual min, h, day, ... suffixes now. + + * journalctl gained a new "--sync" switch that asks the + journal daemon to write all so far unwritten log messages to + disk and sync the files, before returning. + + * Support for the ".snapshot" unit type has been removed. This + feature turned out to be little useful and little used, and + has now been removed from the core and from systemctl. + + * A new service execution setting PassEnvironment= has been + added that allows importing select environment variables + from PID1's environment block into the environment block of + the service. + CHANGES WITH 227: * systemd now depends on util-linux v2.27. More specifically, |