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journal: rotate on SIGUSR2

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This commit is contained in:
Lennart Poettering 2012-06-09 15:04:14 +02:00
parent 38a6db16dc
commit ba6b303953
3 changed files with 42 additions and 8 deletions
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6
TODO
View File

@ -163,8 +163,6 @@ Features:
* figure out whether we should leave dbus around during shutdown
* add interface to allow immediate rotation of the journal, and even flushing.
* dbus: in fedora, make the machine a symlink to /etc/machine-id
* journald: reuse XZ context
@ -199,14 +197,10 @@ Features:
* systemctl status: show coredumps
* systemctl status: show whether journal was rotated since service started
* save coredump in Windows/Mozilla minidump format
* support crash reporting operation modes (https://live.gnome.org/GnomeOS/Design/Whiteboards/ProblemReporting)
* journal: allow per-entry control on /var vs. /run (think incognito browser mode)
* clean up session cgroups that remain after logout (think sshd), but eventually run empty
* support "systemctl stop foobar@.service" to stop all units matching a certain template

33
man/systemd-journald.service.xml
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@ -97,6 +97,39 @@
service.</para>
</refsect1>
<refsect1>
<title>Signals</title>
<variablelist>
<varlistentry>
<term>SIGUSR1</term>
<listitem><para>Request that journal
data from <filename>/run/</filename>
is flushed to
<filename>/var/</filename> in order to
make it persistent (if this is
enabled). This may be used after
<filename>/var/</filename> is mounted,
but is generally not required since
the first journal write when
<filename>/var/</filename> becomes
writable triggers the flushing
anyway.</para></listitem>
</varlistentry>
<varlistentry>
<term>SIGUSR2</term>
<listitem><para>Request immediate
rotation of the journal
files.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>

11
src/journal/journald.c
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@ -2143,6 +2143,7 @@ static int server_flush_proc_kmsg(Server *s) {
static int process_event(Server *s, struct epoll_event *ev) {
assert(s);
assert(ev);
if (ev->data.fd == s->signal_fd) {
struct signalfd_siginfo sfsi;
@ -2167,7 +2168,13 @@ static int process_event(Server *s, struct epoll_event *ev) {
if (sfsi.ssi_signo == SIGUSR1) {
server_flush_to_var(s);
return 0;
return 1;
}
if (sfsi.ssi_signo == SIGUSR2) {
server_rotate(s);
server_vacuum(s);
return 1;
}
log_debug("Received SIG%s", signal_to_string(sfsi.ssi_signo));
@ -2558,7 +2565,7 @@ static int open_signalfd(Server *s) {
assert(s);
assert_se(sigemptyset(&mask) == 0);
sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, -1);
sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);