diff options
| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-11-08 14:12:54 +0100 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-11-10 19:33:06 -0500 |
| commit | 36b4a7ba555540edb7648e0f97019280b4ac38de (patch) | |
| tree | a00ff6d8304552e68e08e026d7f0c174cbed5746 /man/systemd.xml | |
| parent | e3c4a681db0b7004904b95d55fd1a443161c9397 (diff) | |
Remove snapshot unit type
Snapshots were never useful or used for anything. Many systemd
developers that I spoke to at systemd.conf2015, didn't even know they
existed, so it is fairly safe to assume that this type can be deleted
without harm.
The fundamental problem with snapshots is that the state of the system
is dynamic, devices come and go, users log in and out, timers fire...
and restoring all units to some state from the past would "undo"
those changes, which isn't really possible.
Tested by creating a snapshot, running the new binary, and checking
that the transition did not cause errors, and the snapshot is gone,
and snapshots cannot be created anymore.
New systemctl says:
Unknown operation snapshot.
Old systemctl says:
Failed to create snapshot: Support for snapshots has been removed.
IgnoreOnSnaphost settings are warned about and ignored:
Support for option IgnoreOnSnapshot= has been removed and it is ignored
http://lists.freedesktop.org/archives/systemd-devel/2015-November/034872.html
Diffstat (limited to 'man/systemd.xml')
| -rw-r--r-- | man/systemd.xml | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/man/systemd.xml b/man/systemd.xml index 08ce99d0cc..6de18f8294 100644 --- a/man/systemd.xml +++ b/man/systemd.xml @@ -318,12 +318,6 @@ boot-up. See <citerefentry><refentrytitle>systemd.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem> - <listitem><para>Snapshot units can be used to temporarily save - the state of the set of systemd units, which later may be - restored by activating the saved snapshot unit. For more - information, see - <citerefentry><refentrytitle>systemd.snapshot</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem> - <listitem><para>Timer units are useful for triggering activation of other units based on timers. You may find details in <citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem> |