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| author |   Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2018-12-11 23:28:29 +0100 |
|---|---|---|
| committer |   Lennart Poettering <lennart@poettering.net> | 2018-12-12 10:09:36 +0100 |
| commit | 06da5c63dd697ea4087e76c6d809b60b5780b87c (patch) | |
| tree | 96f8bdc24a0f4155468534ebfbf065a116c81e96 /docs | |
| parent | udev: introduce udev net_id "naming schemes" (diff) | |
| download | systemd-06da5c63dd697ea4087e76c6d809b60b5780b87c.tar.gz systemd-06da5c63dd697ea4087e76c6d809b60b5780b87c.tar.bz2 systemd-06da5c63dd697ea4087e76c6d809b60b5780b87c.zip | |
meson: make net.naming-scheme= default configurable
This is useful for distributions, where the stability of interface names should
be preseved after an upgrade of systemd. So when some specific release of the
distro is made available, systemd defaults to the latest & greatest naming
scheme, and subsequent updates set the same default. This default may still
be overriden through the kernel and env var options.
A special value "latest" is also allowed. Without a specific name, it is harder
to verride from meson. In case of 'combo' options, meson reads the default
during the initial configuration, and "remembers" this choice. When systemd is
updated, old build/ directories could keep the old default, which would be
annoying. Hence, "latest" is introduced to make it explicit, yet follow the
upstream. This is actually useful for the user too, because it may be used
as an override, without having to actually specify a version.
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ENVIRONMENT.md | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md index e9e82cfca..eaac288ec 100644 --- a/docs/ENVIRONMENT.md +++ b/docs/ENVIRONMENT.md @@ -92,13 +92,14 @@ systemd-logind: for it. * `$NET_NAMING_SCHEME=` – if set, takes a network naming scheme (i.e. one of - v238, v239, v240 …) as parameter. If specified udev's net_id builtin will - follow the specified naming scheme when determining stable network interface - names. This may be used to revert to naming schemes of older udev versions, - in order to provide more stable naming across updates. This environment - variable takes precedence over the kernel command line option - `net.naming-scheme=`, except if the value is prefixed with `:` in which case - the kernel command line option takes precedence, if it is specified as well. + "v238", "v239", "v240"…, or the special value "latest") as parameter. If + specified udev's net_id builtin will follow the specified naming scheme when + determining stable network interface names. This may be used to revert to + naming schemes of older udev versions, in order to provide more stable naming + across updates. This environment variable takes precedence over the kernel + command line option `net.naming-scheme=`, except if the value is prefixed + with `:` in which case the kernel command line option takes precedence, if it + is specified as well. installed systemd tests: |