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journald: use structured message + catalog entry for disk usage

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The format of the journald disk usage log entry was changed back and
forth a few times. It is annoying to have a very verbose message, but
if it is short it is hard to understand. But we have a tool for this,
the catalogue.

$ journalctl -x -u systemd-journald
Jan 23 18:48:50 rawhide systemd-journald[891]: Runtime journal (/run/log/journal/) is 8.0M, max 196.2M, 188.2M free.
-- Subject: Disk space used by the journal
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Runtime journal (/run/log/journal/) is currently using 8.0M.
-- Maximum allowed usage is set to 196.2M.
-- Leaving at least 294.3M free (of currently available 1.9G of disk space).
-- Enforced usage limit is thus 196.2M, of which 188.2M are still available.
--
-- The limits controlling how much disk space is used by the journal may
-- be configured with SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=,
-- RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize= settings in
-- /etc/systemd/journald.conf. See journald.conf(5) for details.
Jan 23 18:48:50 rawhide systemd-journald[891]: System journal (/var/log/journal/) is 480.1M, max 1.6G, 1.2G free.
-- Subject: Disk space used by the journal
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- System journal (/var/log/journal/) is currently using 480.1M.
-- Maximum allowed usage is set to 1.6G.
-- Leaving at least 2.5G free (of currently available 5.8G of disk space).
-- Enforced usage limit is thus 1.6G, of which 1.2G are still available.
--
-- The limits controlling how much disk space is used by the journal may
-- be configured with SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=,
-- RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize= settings in
-- /etc/systemd/journald.conf. See journald.conf(5) for details.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2015-11-10 07:44:19 -05:00
parent 8a03c9ef74
commit 282c5c4e42
3 changed files with 38 additions and 13 deletions
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15
catalog/systemd.catalog
View file

@ -38,6 +38,21 @@ Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
The system journal process has shut down and closed all currently
active journal files.
-- ec387f577b844b8fa948f33cad9a75e6
Subject: Disk space used by the journal
Defined-By: systemd
Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
@JOURNAL_NAME@ (@JOURNAL_PATH@) is currently using @CURRENT_USE_PRETTY@.
Maximum allowed usage is set to @MAX_USE_PRETTY@.
Leaving at least @DISK_KEEP_FREE_PRETTY@ free (of currently available @DISK_AVAILABLE_PRETTY@ of disk space).
Enforced usage limit is thus @LIMIT_PRETTY@, of which @AVAILABLE_PRETTY@ are still available.
The limits controlling how much disk space is used by the journal may
be configured with SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=,
RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize= settings in
/etc/systemd/journald.conf. See journald.conf(5) for details.
-- a596d6fe7bfa4994828e72309e95d61e
Subject: Messages from a service have been suppressed
Defined-By: systemd

34
src/journal/journald-server.c
View file

@ -163,20 +163,30 @@ static int determine_space_for(
if (verbose) {
char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX],
fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX];
format_bytes(fb1, sizeof(fb1), sum);
format_bytes(fb2, sizeof(fb2), metrics->max_use);
format_bytes(fb3, sizeof(fb3), metrics->keep_free);
format_bytes(fb4, sizeof(fb4), ss_avail);
format_bytes(fb5, sizeof(fb5), s->cached_space_limit);
format_bytes(fb6, sizeof(fb6), s->cached_space_available);
server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE,
LOG_MESSAGE(
"%s (%s) is currently using %s.\n"
"Maximum allowed usage is set to %s.\n"
"Leaving at least %s free (of currently available %s of space).\n"
"Enforced usage limit is thus %s, of which %s are still available.",
name, path,
format_bytes(fb1, sizeof(fb1), sum),
format_bytes(fb2, sizeof(fb2), metrics->max_use),
format_bytes(fb3, sizeof(fb3), metrics->keep_free),
format_bytes(fb4, sizeof(fb4), ss_avail),
format_bytes(fb5, sizeof(fb5), s->cached_space_limit),
format_bytes(fb6, sizeof(fb6), s->cached_space_available)),
LOG_MESSAGE("%s (%s) is %s, max %s, %s free.",
name, path, fb1, fb5, fb6),
"JOURNAL_NAME=%s", name,
"JOURNAL_PATH=%s", path,
"CURRENT_USE=%"PRIu64, sum,
"CURRENT_USE_PRETTY=%s", fb1,
"MAX_USE=%"PRIu64, metrics->max_use,
"MAX_USE_PRETTY=%s", fb2,
"DISK_KEEP_FREE=%"PRIu64, metrics->keep_free,
"DISK_KEEP_FREE_PRETTY=%s", fb3,
"DISK_AVAILABLE=%"PRIu64, ss_avail,
"DISK_AVAILABLE_PRETTY=%s", fb4,
"LIMIT=%"PRIu64, s->cached_space_limit,
"LIMIT_PRETTY=%s", fb5,
"AVAILABLE=%"PRIu64, s->cached_space_available,
"AVAILABLE_PRETTY=%s", fb6,
NULL);
}

2
src/journal/journald-server.h
View file

@ -157,7 +157,7 @@ struct Server {
#define N_IOVEC_KERNEL_FIELDS 64
#define N_IOVEC_UDEV_FIELDS 32
#define N_IOVEC_OBJECT_FIELDS 12
#define N_IOVEC_PAYLOAD_FIELDS 1
#define N_IOVEC_PAYLOAD_FIELDS 15
void server_dispatch_message(Server *s, struct iovec *iovec, unsigned n, unsigned m, const struct ucred *ucred, const struct timeval *tv, const char *label, size_t label_len, const char *unit_id, int priority, pid_t object_pid);
void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) _printf_(3,0) _sentinel_;