journald: be a bit more verbose when vacuuming

Vacuuming behaviour is a bit confusing, and/or we have some bugs,
so those additional messages should help to find out what's going
on. Also, rotation of journal files shouldn't be happening too
often, so the level of the messages is bumped to info, so that
they'll be logged under normal operation.

4 files changed, 25 insertions, 11 deletions

diff --git a/src/initctl/initctl.c b/src/initctl/initctl.c
index 5fbce4a9a..ec3304050 100644
--- a/src/initctl/initctl.c
+++ b/src/initctl/initctl.c
@@ -223,8 +223,10 @@ static int fifo_process(Fifo *f) {
         assert(f);
 
         errno = EIO;
-        if ((l = read(f->fd, ((uint8_t*) &f->buffer) + f->bytes_read, sizeof(f->buffer) - f->bytes_read)) <= 0) {
-
+        l = read(f->fd,
+                 ((uint8_t*) &f->buffer) + f->bytes_read,
+                 sizeof(f->buffer) - f->bytes_read);
+        if (l <= 0) {
                 if (errno == EAGAIN)
                         return 0;
 
@@ -372,8 +374,8 @@ static int process_event(Server *s, struct epoll_event *ev) {
         }
 
         f = (Fifo*) ev->data.ptr;
-
-        if ((r = fifo_process(f)) < 0) {
+        r = fifo_process(f);
+        if (r < 0) {
                 log_info("Got error on fifo: %s", strerror(-r));
                 fifo_free(f);
                 return r;
diff --git a/src/journal/journal-vacuum.c b/src/journal/journal-vacuum.c
index 178c8030d..c73ad8f39 100644
--- a/src/journal/journal-vacuum.c
+++ b/src/journal/journal-vacuum.c
@@ -159,7 +159,7 @@ int journal_directory_vacuum(
         struct vacuum_info *list = NULL;
         unsigned n_list = 0, i;
         size_t n_allocated = 0;
-        uint64_t sum = 0;
+        uint64_t sum = 0, freed = 0;
         usec_t retention_limit = 0;
 
         assert(directory);
@@ -267,13 +267,17 @@ int journal_directory_vacuum(
                         continue;
 
                 if (journal_file_empty(dirfd(d), p)) {
-
                         /* Always vacuum empty non-online files. */
 
-                        if (unlinkat(dirfd(d), p, 0) >= 0)
-                                log_debug("Deleted empty journal %s/%s.", directory, p);
-                        else if (errno != ENOENT)
+                        uint64_t size = 512UL * (uint64_t) st.st_blocks;
+
+                        if (unlinkat(dirfd(d), p, 0) >= 0) {
+                                log_info("Deleted empty journal %s/%s (%"PRIu64" bytes).",
+                                         directory, p, size);
+                                freed += size;
+                        } else if (errno != ENOENT)
                                 log_warning("Failed to delete %s/%s: %m", directory, p);
+
                         continue;
                 }
 
@@ -310,7 +314,9 @@ int journal_directory_vacuum(
                         break;
 
                 if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) {
-                        log_debug("Deleted archived journal %s/%s.", directory, list[i].filename);
+                        log_debug("Deleted archived journal %s/%s (%"PRIu64" bytes).",
+                                  directory, list[i].filename, list[i].usage);
+                        freed += list[i].usage;
 
                         if (list[i].usage < sum)
                                 sum -= list[i].usage;
@@ -329,5 +335,7 @@ finish:
                 free(list[i].filename);
         free(list);
 
+        log_info("Vacuuming done, freed %"PRIu64" bytes", freed);
+
         return r;
 }
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 27c148e68..9a2d25536 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -1301,7 +1301,7 @@ static int access_check(sd_journal *j) {
 
 int main(int argc, char *argv[]) {
         int r;
-        _cleanup_journal_close_ sd_journal*j = NULL;
+        _cleanup_journal_close_ sd_journal *j = NULL;
         bool need_seek = false;
         sd_id128_t previous_boot_id;
         bool previous_boot_id_valid = false, first_line = true;
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 14afcfb79..9daeb6e9e 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -1092,6 +1092,8 @@ int process_event(Server *s, struct epoll_event *ev) {
                 }
 
                 if (sfsi.ssi_signo == SIGUSR1) {
+                        log_info("Received request to flush runtime journal from PID %"PRIu32,
+                                 sfsi.ssi_pid);
                         touch("/run/systemd/journal/flushed");
                         server_flush_to_var(s);
                         server_sync(s);
@@ -1099,6 +1101,8 @@ int process_event(Server *s, struct epoll_event *ev) {
                 }
 
                 if (sfsi.ssi_signo == SIGUSR2) {
+                        log_info("Received request to rotate journal from PID %"PRIu32,
+                                 sfsi.ssi_pid);
                         server_rotate(s);
                         server_vacuum(s);
                         return 1;