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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martin Wilck <mwilck@suse.com>
Date: Sat, 26 Sep 2020 00:04:53 +0200
Subject: [PATCH] libmultipath: use libmp_verbosity to track verbosity
Introduce a new global variable to set the verbosity of libmultipath.
This avoids accessing the configuration in every dlog() call.
When libmultipath reads its configuration in init_config() or
load_config(), it will use the current value of libmp_verbosity
for logging. Immediately before returning, libmp_verbosity will be
overwritten with the verbosity value from the configuration file,
if it was set there. An application is free to set libmp_verbosity
back to the previous value or not after that, depending on whether
command line options or configuration file settings should take
precedence.
Replace internal access to conf->verbosity with the new variable.
Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
libmpathpersist/mpath_persist.c | 5 +---
libmultipath/config.c | 9 +++++--
libmultipath/configure.c | 16 +++----------
libmultipath/debug.c | 10 ++------
libmultipath/debug.h | 1 +
libmultipath/devmapper.c | 7 +-----
libmultipath/libmultipath.version | 5 ++++
multipath/main.c | 21 ++++++----------
multipathd/main.c | 40 ++++++++++++++++++-------------
tests/alias.c | 1 +
tests/blacklist.c | 2 ++
11 files changed, 53 insertions(+), 64 deletions(-)
diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index 9ebf91dd..79322e86 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -170,10 +170,7 @@ void mpath_persistent_reserve_free_vecs(void)
int mpath_persistent_reserve_init_vecs(int verbose)
{
- struct config *conf = get_multipath_config();
-
- conf->verbosity = verbose;
- put_multipath_config(conf);
+ libmp_verbosity = verbose;
if (curmp)
return MPATH_PR_SUCCESS;
diff --git a/libmultipath/config.c b/libmultipath/config.c
index 52b1447b..49e7fb81 100644
--- a/libmultipath/config.c
+++ b/libmultipath/config.c
@@ -828,10 +828,14 @@ int _init_config (const char *file, struct config *conf)
conf = &__internal_config;
/*
- * internal defaults
+ * Processing the config file will overwrite conf->verbosity if set
+ * When we return, we'll copy the config value back
*/
- conf->verbosity = DEFAULT_VERBOSITY;
+ conf->verbosity = libmp_verbosity;
+ /*
+ * internal defaults
+ */
get_sys_max_fds(&conf->max_fds);
conf->bindings_file = set_default(DEFAULT_BINDINGS_FILE);
conf->wwids_file = set_default(DEFAULT_WWIDS_FILE);
@@ -997,6 +1001,7 @@ int _init_config (const char *file, struct config *conf)
!conf->wwids_file || !conf->prkeys_file)
goto out;
+ libmp_verbosity = conf->verbosity;
return 0;
out:
_uninit_config(conf);
diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index d36f0d0d..20536e60 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -934,16 +934,12 @@ int domap(struct multipath *mpp, char *params, int is_daemon)
{
int r = DOMAP_FAIL;
struct config *conf;
- int verbosity;
/*
* last chance to quit before touching the devmaps
*/
if (mpp->action == ACT_DRY_RUN) {
- conf = get_multipath_config();
- verbosity = conf->verbosity;
- put_multipath_config(conf);
- print_multipath_topology(mpp, verbosity);
+ print_multipath_topology(mpp, libmp_verbosity);
return DOMAP_DRY;
}
@@ -1327,14 +1323,8 @@ int coalesce_paths (struct vectors *vecs, vector mpvec, char *refwwid,
"queue_if_no_path");
}
- if (!is_daemon && mpp->action != ACT_NOTHING) {
- int verbosity;
-
- conf = get_multipath_config();
- verbosity = conf->verbosity;
- put_multipath_config(conf);
- print_multipath_topology(mpp, verbosity);
- }
+ if (!is_daemon && mpp->action != ACT_NOTHING)
+ print_multipath_topology(mpp, libmp_verbosity);
if (mpp->action != ACT_REJECT) {
if (!vector_alloc_slot(newmp)) {
diff --git a/libmultipath/debug.c b/libmultipath/debug.c
index b3a1de9e..a1713b95 100644
--- a/libmultipath/debug.c
+++ b/libmultipath/debug.c
@@ -16,21 +16,15 @@
#include "debug.h"
int logsink;
+int libmp_verbosity = DEFAULT_VERBOSITY;
void dlog (int sink, int prio, const char * fmt, ...)
{
va_list ap;
- int thres;
- struct config *conf;
va_start(ap, fmt);
- conf = get_multipath_config();
- ANNOTATE_IGNORE_READS_BEGIN();
- thres = (conf) ? conf->verbosity : DEFAULT_VERBOSITY;
- ANNOTATE_IGNORE_READS_END();
- put_multipath_config(conf);
- if (prio <= thres) {
+ if (prio <= libmp_verbosity) {
if (sink < 1) {
if (sink == 0) {
time_t t = time(NULL);
diff --git a/libmultipath/debug.h b/libmultipath/debug.h
index c6120c1d..1f3bc8be 100644
--- a/libmultipath/debug.h
+++ b/libmultipath/debug.h
@@ -8,6 +8,7 @@ void dlog (int sink, int prio, const char * fmt, ...)
#include "log_pthread.h"
extern int logsink;
+extern int libmp_verbosity;
#define condlog(prio, fmt, args...) \
dlog(logsink, prio, fmt "\n", ##args)
diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c
index e60ab493..dfe95d2f 100644
--- a/libmultipath/devmapper.c
+++ b/libmultipath/devmapper.c
@@ -351,16 +351,11 @@ void libmp_dm_exit(void)
static void libmp_dm_init(void)
{
- struct config *conf;
- int verbosity;
unsigned int version[3];
if (dm_prereq(version))
exit(1);
- conf = get_multipath_config();
- verbosity = conf->verbosity;
- put_multipath_config(conf);
- dm_init(verbosity);
+ dm_init(libmp_verbosity);
#ifdef LIBDM_API_HOLD_CONTROL
dm_hold_control_dev(1);
#endif
diff --git a/libmultipath/libmultipath.version b/libmultipath/libmultipath.version
index 800cff22..67a7379f 100644
--- a/libmultipath/libmultipath.version
+++ b/libmultipath/libmultipath.version
@@ -259,3 +259,8 @@ global:
local:
*;
};
+
+LIBMULTIPATH_4.1.0 {
+global:
+ libmp_verbosity;
+} LIBMULTIPATH_4.0.0;
diff --git a/multipath/main.c b/multipath/main.c
index 043d8fa7..98d93c58 100644
--- a/multipath/main.c
+++ b/multipath/main.c
@@ -208,22 +208,15 @@ get_dm_mpvec (enum mpath_cmds cmd, vector curmp, vector pathvec, char * refwwid)
mpp->bestpg = select_path_group(mpp);
if (cmd == CMD_LIST_SHORT ||
- cmd == CMD_LIST_LONG) {
- struct config *conf = get_multipath_config();
- print_multipath_topology(mpp, conf->verbosity);
- put_multipath_config(conf);
- }
+ cmd == CMD_LIST_LONG)
+ print_multipath_topology(mpp, libmp_verbosity);
if (cmd == CMD_CREATE)
reinstate_paths(mpp);
}
- if (cmd == CMD_LIST_SHORT || cmd == CMD_LIST_LONG) {
- struct config *conf = get_multipath_config();
-
- print_foreign_topology(conf->verbosity);
- put_multipath_config(conf);
- }
+ if (cmd == CMD_LIST_SHORT || cmd == CMD_LIST_LONG)
+ print_foreign_topology(libmp_verbosity);
return 0;
}
@@ -552,7 +545,7 @@ configure (struct config *conf, enum mpath_cmds cmd,
if (path_discovery(pathvec, di_flag) < 0)
goto out;
- if (conf->verbosity > 2)
+ if (libmp_verbosity > 2)
print_all_paths(pathvec, 1);
get_path_layout(pathvec, 0);
@@ -843,7 +836,7 @@ main (int argc, char *argv[])
exit(RTVL_FAIL);
}
- conf->verbosity = atoi(optarg);
+ libmp_verbosity = atoi(optarg);
break;
case 'b':
conf->bindings_file = strdup(optarg);
@@ -974,7 +967,7 @@ main (int argc, char *argv[])
}
if (dev_type == DEV_UEVENT) {
openlog("multipath", 0, LOG_DAEMON);
- setlogmask(LOG_UPTO(conf->verbosity + 3));
+ setlogmask(LOG_UPTO(libmp_verbosity + 3));
logsink = 1;
}
diff --git a/multipathd/main.c b/multipathd/main.c
index 4de0978e..ba257515 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -88,10 +88,10 @@
#define CMDSIZE 160
#define MSG_SIZE 32
-#define LOG_MSG(lvl, verb, pp) \
+#define LOG_MSG(lvl, pp) \
do { \
if (pp->mpp && checker_selected(&pp->checker) && \
- lvl <= verb) { \
+ lvl <= libmp_verbosity) { \
if (pp->offline) \
condlog(lvl, "%s: %s - path offline", \
pp->mpp->alias, pp->dev); \
@@ -2070,7 +2070,7 @@ check_path (struct vectors * vecs, struct path * pp, unsigned int ticks)
int chkr_new_path_up = 0;
int disable_reinstate = 0;
int oldchkrstate = pp->chkrstate;
- int retrigger_tries, verbosity;
+ int retrigger_tries;
unsigned int checkint, max_checkint;
struct config *conf;
int marginal_pathgroups, marginal_changed = 0;
@@ -2090,7 +2090,6 @@ check_path (struct vectors * vecs, struct path * pp, unsigned int ticks)
retrigger_tries = conf->retrigger_tries;
checkint = conf->checkint;
max_checkint = conf->max_checkint;
- verbosity = conf->verbosity;
marginal_pathgroups = conf->marginal_pathgroups;
put_multipath_config(conf);
@@ -2152,7 +2151,7 @@ check_path (struct vectors * vecs, struct path * pp, unsigned int ticks)
if (newstate == PATH_WILD || newstate == PATH_UNCHECKED) {
condlog(2, "%s: unusable path (%s) - checker failed",
pp->dev, checker_state_name(newstate));
- LOG_MSG(2, verbosity, pp);
+ LOG_MSG(2, pp);
conf = get_multipath_config();
pthread_cleanup_push(put_multipath_config, conf);
pathinfo(pp, conf, 0);
@@ -2257,7 +2256,7 @@ check_path (struct vectors * vecs, struct path * pp, unsigned int ticks)
int oldstate = pp->state;
pp->state = newstate;
- LOG_MSG(1, verbosity, pp);
+ LOG_MSG(1, pp);
/*
* upon state change, reset the checkint
@@ -2321,7 +2320,7 @@ check_path (struct vectors * vecs, struct path * pp, unsigned int ticks)
/* Clear IO errors */
reinstate_path(pp);
else {
- LOG_MSG(4, verbosity, pp);
+ LOG_MSG(4, pp);
if (pp->checkint != max_checkint) {
/*
* double the next check delay.
@@ -2349,9 +2348,9 @@ check_path (struct vectors * vecs, struct path * pp, unsigned int ticks)
log_checker_err = conf->log_checker_err;
put_multipath_config(conf);
if (log_checker_err == LOG_CHKR_ERR_ONCE)
- LOG_MSG(3, verbosity, pp);
+ LOG_MSG(3, pp);
else
- LOG_MSG(2, verbosity, pp);
+ LOG_MSG(2, pp);
}
}
@@ -2696,6 +2695,10 @@ reconfigure (struct vectors * vecs)
if (!conf)
return 1;
+ if (verbosity)
+ libmp_verbosity = verbosity;
+ setlogmask(LOG_UPTO(libmp_verbosity + 3));
+
/*
* free old map and path vectors ... they use old conf state
*/
@@ -2710,8 +2713,6 @@ reconfigure (struct vectors * vecs)
/* Re-read any timezone changes */
tzset();
- if (verbosity)
- conf->verbosity = verbosity;
if (bindings_read_only)
conf->bindings_read_only = bindings_read_only;
check_alias_settings(conf);
@@ -3091,14 +3092,18 @@ child (__attribute__((unused)) void *param)
condlog(2, "--------start up--------");
condlog(2, "read " DEFAULT_CONFIGFILE);
+ if (verbosity)
+ libmp_verbosity = verbosity;
conf = load_config(DEFAULT_CONFIGFILE);
+ if (verbosity)
+ libmp_verbosity = verbosity;
+ setlogmask(LOG_UPTO(libmp_verbosity + 3));
+
if (!conf) {
condlog(0, "failed to load configuration");
goto failed;
}
- if (verbosity)
- conf->verbosity = verbosity;
if (bindings_read_only)
conf->bindings_read_only = bindings_read_only;
uxsock_timeout = conf->uxsock_timeout;
@@ -3117,7 +3122,6 @@ child (__attribute__((unused)) void *param)
if (poll_dmevents)
poll_dmevents = dmevent_poll_supported();
- setlogmask(LOG_UPTO(conf->verbosity + 3));
envp = getenv("LimitNOFILE");
@@ -3339,7 +3343,7 @@ main (int argc, char *argv[])
!isdigit(optarg[0]))
exit(1);
- verbosity = atoi(optarg);
+ libmp_verbosity = verbosity = atoi(optarg);
break;
case 's':
logsink = -1;
@@ -3350,7 +3354,7 @@ main (int argc, char *argv[])
if (!conf)
exit(1);
if (verbosity)
- conf->verbosity = verbosity;
+ libmp_verbosity = verbosity;
uxsock_timeout = conf->uxsock_timeout;
err = uxclnt(optarg, uxsock_timeout + 100);
free_config(conf);
@@ -3376,11 +3380,13 @@ main (int argc, char *argv[])
char * c = s;
logsink = 0;
+ if (verbosity)
+ libmp_verbosity = verbosity;
conf = load_config(DEFAULT_CONFIGFILE);
if (!conf)
exit(1);
if (verbosity)
- conf->verbosity = verbosity;
+ libmp_verbosity = verbosity;
uxsock_timeout = conf->uxsock_timeout;
memset(cmd, 0x0, CMDSIZE);
while (optind < argc) {
diff --git a/tests/alias.c b/tests/alias.c
index 7fda679d..0311faa6 100644
--- a/tests/alias.c
+++ b/tests/alias.c
@@ -735,6 +735,7 @@ static int test_allocate_binding(void)
int main(void)
{
int ret = 0;
+ libmp_verbosity = conf.verbosity;
ret += test_format_devname();
ret += test_scan_devname();
diff --git a/tests/blacklist.c b/tests/blacklist.c
index 84a3ba2f..0b42e255 100644
--- a/tests/blacklist.c
+++ b/tests/blacklist.c
@@ -22,6 +22,7 @@
#include "globals.c"
#include "blacklist.h"
#include "test-log.h"
+#include "debug.h"
struct udev_device {
const char *sysname;
@@ -152,6 +153,7 @@ static int setup(void **state)
store_ble(blist_property_wwn_inv, "!ID_WWN", ORIGIN_CONFIG))
return -1;
+ libmp_verbosity = conf.verbosity = 4;
return 0;
}
--
2.17.2
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