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Commit Graph

77 Commits

Author SHA1 Message Date
Zbigniew Jędrzejewski-Szmek
b5e798de20 NEWS,man: tweak the description of FixedRandomDelay=
Explain why this is useful, but don't describe the implementation exactly,
since we're likely to want to change details in the future.
2020-11-11 19:10:34 +09:00
Lennart Poettering
394131d5be
Merge pull request #17497 from anitazha/randomizeonce
timer: add new feature FixedRandomDelay=
2020-11-10 13:29:04 +01:00
Yu Watanabe
db9ecf0501 license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
Kristijan Gjoshev
acf24a1a84 timer: add new feature FixedRandomDelay=
FixedRandomDelay=yes will use
`siphash24(sd_id128_get_machine() || MANAGER_IS_SYSTEM(m) || getuid() || u->id)`,
where || is concatenation, instead of a random number to choose a value between
0 and RandomizedDelaySec= as the timer delay.
This essentially sets up a fixed, but seemingly random, offset for each timer
iteration rather than having a random offset recalculated each time it fires.

Closes #10355

Co-author: Anita Zhang <the.anitazha@gmail.com>
2020-11-05 10:59:33 -08:00
Anita Zhang
5cecbae158 man: add <option> around default booleans in systemd.timer 2020-11-03 20:25:53 -08:00
Lennart Poettering
415f8a5bfe man: document that RemainAfterElapse=no means that also the triggered unit needs to deactivate
Fixes: #16378
2020-09-14 10:17:41 +02:00
Nazar Vinnichuk
5501da15ba man: document the random delay of persistent timers
The manual states that a persistent timer triggers it's service
immediately on activation to catch up with missed invocations, but since
PR #11608 it is no longer the case if RandomizedDelaySec= is set to a
non-zero value.
2020-09-11 18:08:40 +02:00
Zbigniew Jędrzejewski-Szmek
bdac560801 tree-wide: drop quotes from around [section]
For users, the square brackets already serve as markup and clearly delineate
the section name from surrounding text. Putting additional markup around that
only adds clutter. Also, we were very inconsistent in using the quotes. Let's
just drop them altogether.
2020-07-06 11:29:05 +02:00
Lennart Poettering
f535af6bcd man: document that WakeSystem= affects clock choice
Fixes: #8308
2020-01-17 10:09:50 +01:00
Lennart Poettering
d524094b6b man: underline that AccuracySec= is about coalescing timer events, nothing else
Fixes: #13328
2020-01-17 10:08:23 +01:00
Lennart Poettering
114b90e10c man: document that WakeSystem= requires privs
Fixes: #11677
2019-07-12 14:25:33 +02:00
Lennart Poettering
8c8208cb80 man: document new "systemctl clean…" operation 2019-07-11 12:18:51 +02:00
Philip Withnall
f627573031 man: Add missing <literal> tags in various man pages
A minor formatting improvement brought to you by the wonders of `git
grep`.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
2019-06-12 10:39:50 +01:00
Ben Boeckel
5238e95759 codespell: fix spelling errors 2019-04-29 16:47:18 +02:00
Lennart Poettering
d9b8c2ef8b man: document the two new .timer settings 2019-04-02 08:20:10 +02:00
Lennart Poettering
58031d99c6 man: be clearer that .timer time expressions need to be reset to override them
let's be clearer about the overriding concept for OnCalendar= settings.

Prompted by this thread:

https://lists.freedesktop.org/archives/systemd-devel/2019-March/042351.html
2019-04-01 18:30:18 +02:00
Zbigniew Jędrzejewski-Szmek
65aeb9d4ab man: clarify the role of OnBootSec= in containers
https://github.com/systemd/systemd/pull/12104#pullrequestreview-218627236
2019-03-27 14:03:37 +01:00
Lennart Poettering
c49357e747 man: rework timer docs to use a table for monotonic timers 2019-03-25 20:32:18 +01:00
Zbigniew Jędrzejewski-Szmek
3a54a15760 man: use same header for all files
The "include" files had type "book" for some raeason. I don't think this
is meaningful. Let's just use the same everywhere.

$ perl -i -0pe 's^..DOCTYPE (book|refentry) PUBLIC "-//OASIS//DTD DocBook XML V4.[25]//EN"\s+"http^<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"\n  "http^gms' man/*.xml
2019-03-14 14:42:05 +01:00
Zbigniew Jędrzejewski-Szmek
0307f79171 man: standarize on one-line license header
No need to waste space, and uniformity is good.

$ perl -i -0pe 's|\n+<!--\s*SPDX-License-Identifier: LGPL-2.1..\s*-->|\n<!-- SPDX-License-Identifier: LGPL-2.1+ -->|gms' man/*.xml
2019-03-14 14:29:37 +01:00
Matthew Leeds
0ccc48b5b8 man: Fix implicit dep info for timer units (#10679)
This reorganizes the systemd.timer man page so that it doesn't claim
there are no implicit dependencies right after specifying the implicit
dependencies, and so that it matches the other man pages for units. This
fixes a mistake introduced by commit aed5cb03db.
2018-11-08 12:41:06 +09:00
dana
3118a4cf17 man: clarify behaviour of RandomizedDelaySec= 2018-10-10 16:15:05 +02:00
Zbigniew Jędrzejewski-Szmek
514094f933 man: drop mode line in file headers
This is already included in .dir-locals, so we don't need it
in the files themselves.
2018-07-03 01:32:25 +02:00
Zbigniew Jędrzejewski-Szmek
fdbbee37d5 man: drop unused <authorgroup> tags from man sources
Docbook styles required those to be present, even though the templates that we
use did not show those names anywhere. But something changed semi-recently (I
would suspect docbook templates, but there was only a minor version bump in
recent years, and the changelog does not suggest anything related), and builds
now work without those entries. Let's drop this dead weight.

Tested with F26-F29, debian unstable.

$ perl -i -0pe 's/\s*<authorgroup>.*<.authorgroup>//gms' man/*xml
2018-06-14 12:22:18 +02:00
Lennart Poettering
0c69794138 tree-wide: remove Lennart's copyright lines
These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
2018-06-14 10:20:20 +02:00
Lennart Poettering
818bf54632 tree-wide: drop 'This file is part of systemd' blurb
This part of the copyright blurb stems from the GPL use recommendations:

https://www.gnu.org/licenses/gpl-howto.en.html

The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.

hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
2018-06-14 10:20:20 +02:00
Lennart Poettering
5d13a15b1d tree-wide: drop spurious newlines (#8764)
Double newlines (i.e. one empty lines) are great to structure code. But
let's avoid triple newlines (i.e. two empty lines), quadruple newlines,
quintuple newlines, …, that's just spurious whitespace.

It's an easy way to drop 121 lines of code, and keeps the coding style
of our sources a bit tigther.
2018-04-19 12:13:23 +02:00
Zbigniew Jędrzejewski-Szmek
aed5cb03db man: merge two sections into two subsections of one section
Those are very close subjects that are a good fit for one section.
2018-04-18 10:04:10 +02:00
Zbigniew Jędrzejewski-Szmek
11a1589223 tree-wide: drop license boilerplate
Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.

I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
2018-04-06 18:58:55 +02:00
Zbigniew Jędrzejewski-Szmek
572eb058cf Add SPDX license identifiers to man pages 2017-11-19 19:08:15 +01:00
John Lin
45f09f939b man: explicitly distinguish "implicit dependencies" and "default dependencies"
Fixes: #6793
2017-09-13 11:39:09 +08:00
Mark Stosberg
192fa38bef man: document that OnCalendar may be specified more than once. (#5885)
It's helpful to know you can provide this more than once, rather than try
to make a more complicated / less clear single expression.
2017-05-05 19:00:45 -04:00
Philip Withnall
46ae28d8c3 man: Fix reference to timer-sync.target instead of time-sync.target (#5764)
Also fix an erroneous reference to it in the NEWS file, for posterity.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
2017-04-20 12:34:26 +02:00
Michael Biebl
595bfe7df2 Various fixes for typos found by lintian (#3705) 2016-07-12 12:52:11 +02:00
Andre Klärner
2374374499 man: fix typo (#3261) 2016-05-15 21:40:52 -04:00
Lennart Poettering
14e2baa369 man: document that RemainAfterExit= doesn't make much sense for repetitive timers
Fixes #3122
2016-04-29 13:37:33 +02:00
Evgeny Vereshchagin
07bd0e02ef man: document the default for systemd.timer's Persistent flag (#3099)
Closes #3096
2016-04-22 20:49:47 -04:00
Lennart Poettering
cc4e4df49f man: clarify that DefaultDependencies= is in the [Unit] section
This hopefully reduces confusion resulting in issues like #2992.
2016-04-12 13:43:33 +02:00
Jakub Wilk
7f3fdb7f19 man: fix typos 2015-12-26 20:37:17 +01:00
Zbigniew Jędrzejewski-Szmek
20cc0ac7a0 man: remove repeated words in description of RandomizedDelay 2015-11-26 16:45:27 -05:00
Zbigniew Jędrzejewski-Szmek
6f5d79986a core: rename Random* to RandomizedDelay*
The name RandomSec is too generic: "Sec" just specifies the default
unit type, and "Random" by itself is not enough. Rename to something
that should give the user general idea what the setting does without
looking at documentation.
2015-11-26 16:32:41 -05:00
Lennart Poettering
744c769375 core: add new RandomSec= setting for time units
This allows configuration of a random time on top of the elapse events,
in order to spread time events in a network evenly across a range.
2015-11-18 17:07:11 +01:00
Lennart Poettering
70b4f81970 man: improve and fix documentation for RemainAfterElapse= 2015-11-18 17:04:04 +01:00
Lennart Poettering
3e0c30ac56 core: add RemainAfterElapse= setting to timer units
Previously, after a timer unit elapsed we'd leave it around for good,
which has the nice benefit that starting a timer that shall trigger at a
specific point in time multiple times will only result in one trigger
instead of possibly many. With this change a new option
RemainAfterElapse= is added. It defaults to "true", to mimic the old
behaviour. If set to "false" timer units will be unloaded after they
elapsed. This is specifically useful for transient timer units.
2015-11-17 20:48:23 +01:00
Lennart Poettering
c129bd5df3 man: document automatic dependencies
For all units ensure there's an "Automatic Dependencies" section in the
man page, and explain which dependencies are automatically added in all
cases, and which ones are added on top if DefaultDependencies=yes is
set.

This is also done for systemd.exec(5), systemd.resource-control(5) and
systemd.unit(5) as these pages describe common behaviour of various unit
types.
2015-11-11 20:47:07 +01:00
Lennart Poettering
9905e698b4 man: fix reference to description of time span syntax 2015-11-10 17:31:30 +01:00
Tom Gundersen
12b42c7667 man: revert dynamic paths for split-usr setups
This did not really work out as we had hoped. Trying to do this upstream
introduced several problems that probably makes it better suited as a
downstream patch after all. At any rate, it is not releaseable in the
current state, so we at least need to revert this before the release.

 * by adjusting the path to binaries, but not do the same thing to the
   search path we end up with inconsistent man-pages. Adjusting the search
   path too would be quite messy, and it is not at all obvious that this is
   worth the effort, but at any rate it would have to be done before we
   could ship this.

 * this means that distributed man-pages does not make sense as they depend
   on config options, and for better or worse we are still distributing
   man pages, so that is something that definitely needs sorting out before
   we could ship with this patch.

 * we have long held that split-usr is only minimally supported in order
   to boot, and something we hope will eventually go away. So before we start
   adding even more magic/effort in order to make this work nicely, we should
   probably question if it makes sense at all.
2015-06-18 19:47:44 +02:00
Filipe Brandenburger
681eb9cf2b man: generate configured paths in manpages
In particular, use /lib/systemd instead of /usr/lib/systemd in distributions
like Debian which still have not adopted a /usr merge setup.

Use XML entities from man/custom-entities.ent to replace configured paths while
doing XSLT processing of the original XML files. There was precedent of some
files (such as systemd.generator.xml) which were already using this approach.

This addresses most of the (manual) fixes from this patch:
http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/patches/Fix-paths-in-man-pages.patch?h=experimental-220

The idea of using generic XML entities was presented here:
http://lists.freedesktop.org/archives/systemd-devel/2015-May/032240.html

This patch solves almost all the issues, with the exception of:
- Path to /bin/mount and /bin/umount.
- Generic statements about preference of /lib over /etc.

These will be handled separately by follow up patches.

Tested:
- With default configure settings, ran "make install" to two separate
  directories and compared the output to confirm they matched exactly.
- Used a set of configure flags including $CONFFLAGS from Debian:
  http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/rules
  Installed the tree and confirmed the paths use /lib/systemd instead of
  /usr/lib/systemd and that no other unexpected differences exist.
- Confirmed that `make distcheck` still passes.
2015-05-28 19:28:19 +02:00
Zbigniew Jędrzejewski-Szmek
b975b0d514 man: boilerplate unification 2015-02-10 23:24:27 -05:00
Zbigniew Jędrzejewski-Szmek
798d3a524e Reindent man pages to 2ch 2015-02-03 23:11:35 -05:00