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-rw-r--r--man/journald.conf.xml10
-rw-r--r--src/journal/journal-file.c63
-rw-r--r--src/journal/journal-file.h2
-rw-r--r--src/journal/journald-gperf.gperf1
-rw-r--r--src/journal/journald-server.c112
-rw-r--r--src/journal/journald-server.h6
-rw-r--r--src/journal/journald.conf1
7 files changed, 179 insertions, 16 deletions
diff --git a/man/journald.conf.xml b/man/journald.conf.xml
index 0797deb115..0b9de65fe3 100644
--- a/man/journald.conf.xml
+++ b/man/journald.conf.xml
@@ -322,6 +322,16 @@
seconds. </para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><varname>SyncIntervalSec=</varname></term>
+
+ <listitem><para>The timeout before syncing journal
+ data to disk. After syncing journal files have
+ OFFLINE state. Default timeout is 5 minutes.
+ </para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><varname>ForwardToSyslog=</varname></term>
<term><varname>ForwardToKMsg=</varname></term>
diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
index 13fc8edea9..5b077be0da 100644
--- a/src/journal/journal-file.c
+++ b/src/journal/journal-file.c
@@ -68,6 +68,50 @@
/* How many entries to keep in the entry array chain cache at max */
#define CHAIN_CACHE_MAX 20
+int journal_file_set_online(JournalFile *f) {
+ assert(f);
+
+ if (!f->writable)
+ return -EPERM;
+
+ if (!(f->fd >= 0 && f->header))
+ return -EINVAL;
+
+ switch(f->header->state) {
+ case STATE_ONLINE:
+ return 0;
+
+ case STATE_OFFLINE:
+ f->header->state = STATE_ONLINE;
+ fsync(f->fd);
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+int journal_file_set_offline(JournalFile *f) {
+ assert(f);
+
+ if (!f->writable)
+ return -EPERM;
+
+ if (!(f->fd >= 0 && f->header))
+ return -EINVAL;
+
+ if (f->header->state != STATE_ONLINE)
+ return 0;
+
+ fsync(f->fd);
+
+ f->header->state = STATE_OFFLINE;
+
+ fsync(f->fd);
+
+ return 0;
+}
+
void journal_file_close(JournalFile *f) {
assert(f);
@@ -81,16 +125,10 @@ void journal_file_close(JournalFile *f) {
if (f->mmap && f->fd >= 0)
mmap_cache_close_fd(f->mmap, f->fd);
- if (f->writable && f->fd >= 0)
- fdatasync(f->fd);
-
- if (f->header) {
- /* Mark the file offline. Don't override the archived state if it already is set */
- if (f->writable && f->header->state == STATE_ONLINE)
- f->header->state = STATE_OFFLINE;
+ journal_file_set_offline(f);
+ if (f->header)
munmap(f->header, PAGE_ALIGN(sizeof(Header)));
- }
if (f->fd >= 0)
close_nointr_nofail(f->fd);
@@ -177,7 +215,7 @@ static int journal_file_refresh_header(JournalFile *f) {
f->header->boot_id = boot_id;
- f->header->state = STATE_ONLINE;
+ journal_file_set_online(f);
/* Sync the online state to disk */
msync(f->header, PAGE_ALIGN(sizeof(Header)), MS_SYNC);
@@ -457,6 +495,10 @@ int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object *
assert(offset);
assert(ret);
+ r = journal_file_set_online(f);
+ if (r < 0)
+ return r;
+
p = le64toh(f->header->tail_object_offset);
if (p == 0)
p = le64toh(f->header->header_size);
@@ -1267,9 +1309,6 @@ int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const st
assert(f);
assert(iovec || n_iovec == 0);
- if (!f->writable)
- return -EPERM;
-
if (!ts) {
dual_timestamp_get(&_ts);
ts = &_ts;
diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
index cdbc8e41f6..0eab5017d7 100644
--- a/src/journal/journal-file.h
+++ b/src/journal/journal-file.h
@@ -106,6 +106,8 @@ int journal_file_open(
JournalFile *template,
JournalFile **ret);
+int journal_file_set_offline(JournalFile *f);
+int journal_file_set_online(JournalFile *f);
void journal_file_close(JournalFile *j);
int journal_file_open_reliably(
diff --git a/src/journal/journald-gperf.gperf b/src/journal/journald-gperf.gperf
index 1baef1411c..57b45f9232 100644
--- a/src/journal/journald-gperf.gperf
+++ b/src/journal/journald-gperf.gperf
@@ -18,6 +18,7 @@ struct ConfigPerfItem;
Journal.Storage, config_parse_storage, 0, offsetof(Server, storage)
Journal.Compress, config_parse_bool, 0, offsetof(Server, compress)
Journal.Seal, config_parse_bool, 0, offsetof(Server, seal)
+Journal.SyncIntervalSec, config_parse_usec, 0, offsetof(Server, sync_interval_usec)
Journal.RateLimitInterval, config_parse_usec, 0, offsetof(Server, rate_limit_interval)
Journal.RateLimitBurst, config_parse_unsigned, 0, offsetof(Server, rate_limit_burst)
Journal.SystemMaxUse, config_parse_bytes_off, 0, offsetof(Server, system_metrics.max_use)
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 855430a6ba..a9d7aa181d 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -24,6 +24,7 @@
#include <linux/sockios.h>
#include <sys/statvfs.h>
#include <sys/mman.h>
+#include <sys/timerfd.h>
#include <libudev.h>
#include <systemd/sd-journal.h>
@@ -67,6 +68,7 @@
#define USER_JOURNALS_MAX 1024
+#define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE)
#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
#define DEFAULT_RATE_LIMIT_BURST 200
@@ -344,6 +346,33 @@ void server_rotate(Server *s) {
}
}
+void server_sync(Server *s) {
+ JournalFile *f;
+ void *k;
+ Iterator i;
+ int r;
+
+ static const struct itimerspec sync_timer_disable = {};
+
+ if (s->system_journal) {
+ r = journal_file_set_offline(s->system_journal);
+ if (r < 0)
+ log_error("Failed to sync system journal: %s", strerror(-r));
+ }
+
+ HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
+ r = journal_file_set_offline(f);
+ if (r < 0)
+ log_error("Failed to sync user journal: %s", strerror(-r));
+ }
+
+ r = timerfd_settime(s->sync_timer_fd, 0, &sync_timer_disable, NULL);
+ if (r < 0)
+ log_error("Failed to disable max timer: %m");
+
+ s->sync_scheduled = false;
+}
+
void server_vacuum(Server *s) {
char *p;
char ids[33];
@@ -475,8 +504,10 @@ static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned
}
r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
- if (r >= 0)
+ if (r >= 0) {
+ server_schedule_sync(s);
return;
+ }
if (vacuumed || !shall_try_append_again(f, r)) {
log_error("Failed to write entry, ignoring: %s", strerror(-r));
@@ -990,11 +1021,10 @@ int process_event(Server *s, struct epoll_event *ev) {
return -errno;
}
- log_info("Received SIG%s", signal_to_string(sfsi.ssi_signo));
-
if (sfsi.ssi_signo == SIGUSR1) {
touch("/run/systemd/journal/flushed");
server_flush_to_var(s);
+ server_sync(s);
return 1;
}
@@ -1004,8 +1034,23 @@ int process_event(Server *s, struct epoll_event *ev) {
return 1;
}
+ log_info("Received SIG%s", signal_to_string(sfsi.ssi_signo));
+
return 0;
+ } else if (ev->data.fd == s->sync_timer_fd) {
+ int r;
+ uint64_t t;
+
+ log_debug("Got sync request from epoll.");
+
+ r = read(ev->data.fd, (void *)&t, sizeof(t));
+ if (r < 0)
+ return 0;
+
+ server_sync(s);
+ return 1;
+
} else if (ev->data.fd == s->dev_kmsg_fd) {
int r;
@@ -1285,16 +1330,68 @@ static int server_parse_config_file(Server *s) {
return r;
}
+static int server_open_sync_timer(Server *s) {
+ int r;
+ struct epoll_event ev;
+
+ assert(s);
+
+ s->sync_timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
+ if (s->sync_timer_fd < 0)
+ return -errno;
+
+ zero(ev);
+ ev.events = EPOLLIN;
+ ev.data.fd = s->sync_timer_fd;
+
+ r = epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->sync_timer_fd, &ev);
+ if (r < 0) {
+ log_error("Failed to add idle timer fd to epoll object: %m");
+ return -errno;
+ }
+
+ return 0;
+}
+
+int server_schedule_sync(Server *s) {
+ int r;
+
+ struct itimerspec sync_timer_enable;
+
+ assert(s);
+
+ if (s->sync_scheduled)
+ return 0;
+
+ if (s->sync_interval_usec) {
+ zero(sync_timer_enable);
+ sync_timer_enable.it_value.tv_sec = s->sync_interval_usec / USEC_PER_SEC;
+ sync_timer_enable.it_value.tv_nsec = s->sync_interval_usec % MSEC_PER_SEC;
+
+ r = timerfd_settime(s->sync_timer_fd, 0, &sync_timer_enable, NULL);
+ if (r < 0)
+ return -errno;
+ }
+
+ s->sync_scheduled = true;
+
+ return 0;
+}
+
int server_init(Server *s) {
int n, r, fd;
assert(s);
zero(*s);
- s->syslog_fd = s->native_fd = s->stdout_fd = s->signal_fd = s->epoll_fd = s->dev_kmsg_fd = -1;
+ s->sync_timer_fd = s->syslog_fd = s->native_fd = s->stdout_fd =
+ s->signal_fd = s->epoll_fd = s->dev_kmsg_fd = -1;
s->compress = true;
s->seal = true;
+ s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC;
+ s->sync_scheduled = false;
+
s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
@@ -1394,6 +1491,10 @@ int server_init(Server *s) {
if (r < 0)
return r;
+ r = server_open_sync_timer(s);
+ if (r < 0)
+ return r;
+
r = open_signalfd(s);
if (r < 0)
return r;
@@ -1466,6 +1567,9 @@ void server_done(Server *s) {
if (s->dev_kmsg_fd >= 0)
close_nointr_nofail(s->dev_kmsg_fd);
+ if (s->sync_timer_fd >= 0)
+ close_nointr_nofail(s->sync_timer_fd);
+
if (s->rate_limit)
journal_rate_limit_free(s->rate_limit);
diff --git a/src/journal/journald-server.h b/src/journal/journald-server.h
index 9f50a29e50..21edd6bdaf 100644
--- a/src/journal/journald-server.h
+++ b/src/journal/journald-server.h
@@ -71,6 +71,7 @@ typedef struct Server {
size_t buffer_size;
JournalRateLimit *rate_limit;
+ usec_t sync_interval_usec;
usec_t rate_limit_interval;
unsigned rate_limit_burst;
@@ -119,6 +120,9 @@ typedef struct Server {
uint64_t *kernel_seqnum;
struct udev *udev;
+
+ int sync_timer_fd;
+ bool sync_scheduled;
} Server;
#define N_IOVEC_META_FIELDS 17
@@ -145,8 +149,10 @@ void server_fix_perms(Server *s, JournalFile *f, uid_t uid);
bool shall_try_append_again(JournalFile *f, int r);
int server_init(Server *s);
void server_done(Server *s);
+void server_sync(Server *s);
void server_vacuum(Server *s);
void server_rotate(Server *s);
+int server_schedule_sync(Server *s);
int server_flush_to_var(Server *s);
int process_event(Server *s, struct epoll_event *ev);
void server_maybe_append_tags(Server *s);
diff --git a/src/journal/journald.conf b/src/journal/journald.conf
index 948318bc62..5410477201 100644
--- a/src/journal/journald.conf
+++ b/src/journal/journald.conf
@@ -12,6 +12,7 @@
#Compress=yes
#Seal=yes
#SplitMode=login
+#SyncIntervalSec=5m
#RateLimitInterval=10s
#RateLimitBurst=200
#SystemMaxUse=
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-04 14:11:19 +0000