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mdadm/SOURCES/0087-Mdmonitor-Make-alert_i...

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From b301516615c441bd3cc4b512fae73fc066d227f1 Mon Sep 17 00:00:00 2001
From: Mateusz Grzonka <mateusz.grzonka@intel.com>
Date: Thu, 2 Feb 2023 12:26:59 +0100
Subject: [PATCH 087/125] Mdmonitor: Make alert_info global
Move information about --test flag and hostname into alert_info.
Signed-off-by: Mateusz Grzonka <mateusz.grzonka@intel.com>
Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
---
Monitor.c | 124 +++++++++++++++++++++++++++---------------------------
1 file changed, 61 insertions(+), 63 deletions(-)
diff --git a/Monitor.c b/Monitor.c
index 188cb8be..9ef4dab8 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -58,21 +58,20 @@ struct state {
};
struct alert_info {
+ char hostname[HOST_NAME_MAX];
char *mailaddr;
char *mailfrom;
char *alert_cmd;
int dosyslog;
-};
+ int test;
+} info;
static int make_daemon(char *pidfile);
static int check_one_sharer(int scan);
static void write_autorebuild_pid(void);
-static void alert(const char *event, const char *dev, const char *disc, struct alert_info *info);
-static int check_array(struct state *st, struct mdstat_ent *mdstat,
- int test, struct alert_info *info,
- int increments, char *prefer);
-static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist,
- int test, struct alert_info *info);
-static void try_spare_migration(struct state *statelist, struct alert_info *info);
+static void alert(const char *event, const char *dev, const char *disc);
+static int check_array(struct state *st, struct mdstat_ent *mdstat, int increments, char *prefer);
+static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist);
+static void try_spare_migration(struct state *statelist);
static void link_containers_with_subarrays(struct state *list);
static void free_statelist(struct state *statelist);
#ifndef NO_LIBUDEV
@@ -132,7 +131,6 @@ int Monitor(struct mddev_dev *devlist,
int finished = 0;
struct mdstat_ent *mdstat = NULL;
char *mailfrom;
- struct alert_info info;
struct mddev_ident *mdlist;
int delay_for_event = c->delay;
@@ -166,6 +164,13 @@ int Monitor(struct mddev_dev *devlist,
info.mailaddr = mailaddr;
info.mailfrom = mailfrom;
info.dosyslog = dosyslog;
+ info.test = c->test;
+
+ if (gethostname(info.hostname, sizeof(info.hostname)) != 0) {
+ pr_err("Cannot get hostname.\n");
+ return 1;
+ }
+ info.hostname[sizeof(info.hostname) - 1] = '\0';
if (share){
if (check_one_sharer(c->scan))
@@ -241,8 +246,7 @@ int Monitor(struct mddev_dev *devlist,
mdstat = mdstat_read(oneshot ? 0 : 1, 0);
for (st = statelist; st; st = st->next) {
- if (check_array(st, mdstat, c->test, &info,
- increments, c->prefer))
+ if (check_array(st, mdstat, increments, c->prefer))
anydegraded = 1;
/* for external arrays, metadata is filled for
* containers only
@@ -255,15 +259,14 @@ int Monitor(struct mddev_dev *devlist,
/* now check if there are any new devices found in mdstat */
if (c->scan)
- new_found = add_new_arrays(mdstat, &statelist, c->test,
- &info);
+ new_found = add_new_arrays(mdstat, &statelist);
/* If an array has active < raid && spare == 0 && spare_group != NULL
* Look for another array with spare > 0 and active == raid and same spare_group
* if found, choose a device and hotremove/hotadd
*/
if (share && anydegraded)
- try_spare_migration(statelist, &info);
+ try_spare_migration(statelist);
if (!new_found) {
if (oneshot)
break;
@@ -294,7 +297,7 @@ int Monitor(struct mddev_dev *devlist,
mdstat_close();
}
}
- c->test = 0;
+ info.test = 0;
for (stp = &statelist; (st = *stp) != NULL; ) {
if (st->from_auto && st->err > 5) {
@@ -412,7 +415,7 @@ static void write_autorebuild_pid()
}
}
-static void execute_alert_cmd(const char *event, const char *dev, const char *disc, struct alert_info *info)
+static void execute_alert_cmd(const char *event, const char *dev, const char *disc)
{
int pid = fork();
@@ -424,15 +427,14 @@ static void execute_alert_cmd(const char *event, const char *dev, const char *di
pr_err("Cannot fork to execute alert command");
break;
case 0:
- execl(info->alert_cmd, info->alert_cmd, event, dev, disc, NULL);
+ execl(info.alert_cmd, info.alert_cmd, event, dev, disc, NULL);
exit(2);
}
}
-static void send_event_email(const char *event, const char *dev, const char *disc, struct alert_info *info)
+static void send_event_email(const char *event, const char *dev, const char *disc)
{
FILE *mp, *mdstat;
- char hname[256];
char buf[BUFSIZ];
int n;
@@ -442,14 +444,13 @@ static void send_event_email(const char *event, const char *dev, const char *dis
return;
}
- gethostname(hname, sizeof(hname));
signal(SIGPIPE, SIG_IGN);
- if (info->mailfrom)
- fprintf(mp, "From: %s\n", info->mailfrom);
+ if (info.mailfrom)
+ fprintf(mp, "From: %s\n", info.mailfrom);
else
fprintf(mp, "From: %s monitoring <root>\n", Name);
- fprintf(mp, "To: %s\n", info->mailaddr);
- fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, hname);
+ fprintf(mp, "To: %s\n", info.mailaddr);
+ fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, info.hostname);
fprintf(mp, "This is an automatically generated mail message. \n");
fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev);
@@ -501,37 +502,36 @@ static void log_event_to_syslog(const char *event, const char *dev, const char *
syslog(priority, "%s event detected on md device %s", event, dev);
}
-static void alert(const char *event, const char *dev, const char *disc, struct alert_info *info)
+static void alert(const char *event, const char *dev, const char *disc)
{
- if (!info->alert_cmd && !info->mailaddr && !info->dosyslog) {
+ if (!info.alert_cmd && !info.mailaddr && !info.dosyslog) {
time_t now = time(0);
printf("%1.15s: %s on %s %s\n", ctime(&now) + 4,
event, dev, disc?disc:"unknown device");
}
- if (info->alert_cmd)
- execute_alert_cmd(event, dev, disc, info);
+ if (info.alert_cmd)
+ execute_alert_cmd(event, dev, disc);
- if (info->mailaddr && (strncmp(event, "Fail", 4) == 0 ||
+ if (info.mailaddr && (strncmp(event, "Fail", 4) == 0 ||
strncmp(event, "Test", 4) == 0 ||
strncmp(event, "Spares", 6) == 0 ||
strncmp(event, "Degrade", 7) == 0)) {
- send_event_email(event, dev, disc, info);
+ send_event_email(event, dev, disc);
}
- if (info->dosyslog)
+ if (info.dosyslog)
log_event_to_syslog(event, dev, disc);
}
static int check_array(struct state *st, struct mdstat_ent *mdstat,
- int test, struct alert_info *ainfo,
int increments, char *prefer)
{
/* Update the state 'st' to reflect any changes shown in mdstat,
* or found by directly examining the array, and return
* '1' if the array is degraded, or '0' if it is optimal (or dead).
*/
- struct { int state, major, minor; } info[MAX_DISKS];
+ struct { int state, major, minor; } disks_info[MAX_DISKS];
struct mdinfo *sra = NULL;
mdu_array_info_t array;
struct mdstat_ent *mse = NULL, *mse2;
@@ -545,8 +545,8 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
int is_container = 0;
unsigned long redundancy_only_flags = 0;
- if (test)
- alert("TestMessage", dev, NULL, ainfo);
+ if (info.test)
+ alert("TestMessage", dev, NULL);
retval = 0;
@@ -595,7 +595,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
*/
if (sra->array.level == 0 || sra->array.level == -1) {
if (!st->err && !st->from_config)
- alert("DeviceDisappeared", dev, " Wrong-Level", ainfo);
+ alert("DeviceDisappeared", dev, " Wrong-Level");
st->err++;
goto out;
}
@@ -612,7 +612,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
st->percent = RESYNC_NONE;
new_array = 1;
if (!is_container)
- alert("NewArray", st->devname, NULL, ainfo);
+ alert("NewArray", st->devname, NULL);
}
if (st->utime == array.utime && st->failed == sra->array.failed_disks &&
@@ -625,14 +625,14 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
}
if (st->utime == 0 && /* new array */
mse->pattern && strchr(mse->pattern, '_') /* degraded */)
- alert("DegradedArray", dev, NULL, ainfo);
+ alert("DegradedArray", dev, NULL);
if (st->utime == 0 && /* new array */ st->expected_spares > 0 &&
sra->array.spare_disks < st->expected_spares)
- alert("SparesMissing", dev, NULL, ainfo);
+ alert("SparesMissing", dev, NULL);
if (st->percent < 0 && st->percent != RESYNC_UNKNOWN &&
mse->percent >= 0)
- alert("RebuildStarted", dev, NULL, ainfo);
+ alert("RebuildStarted", dev, NULL);
if (st->percent >= 0 && mse->percent >= 0 &&
(mse->percent / increments) > (st->percent / increments)) {
char percentalert[18];
@@ -647,7 +647,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
snprintf(percentalert, sizeof(percentalert),
"Rebuild%02d", mse->percent);
- alert(percentalert, dev, NULL, ainfo);
+ alert(percentalert, dev, NULL);
}
if (mse->percent == RESYNC_NONE && st->percent >= 0) {
@@ -660,9 +660,9 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
snprintf(cnt, sizeof(cnt),
" mismatches found: %d (on raid level %d)",
sra->mismatch_cnt, sra->array.level);
- alert("RebuildFinished", dev, cnt, ainfo);
+ alert("RebuildFinished", dev, cnt);
} else
- alert("RebuildFinished", dev, NULL, ainfo);
+ alert("RebuildFinished", dev, NULL);
}
st->percent = mse->percent;
@@ -671,13 +671,13 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
mdu_disk_info_t disc;
disc.number = i;
if (md_get_disk_info(fd, &disc) >= 0) {
- info[i].state = disc.state;
- info[i].major = disc.major;
- info[i].minor = disc.minor;
+ disks_info[i].state = disc.state;
+ disks_info[i].major = disc.major;
+ disks_info[i].minor = disc.minor;
if (disc.major || disc.minor)
remaining_disks --;
} else
- info[i].major = info[i].minor = 0;
+ disks_info[i].major = disks_info[i].minor = 0;
}
last_disk = i;
@@ -700,13 +700,13 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
int change;
char *dv = NULL;
disc.number = i;
- if (i < last_disk && (info[i].major || info[i].minor)) {
- newstate = info[i].state;
- dv = map_dev_preferred(info[i].major, info[i].minor, 1,
+ if (i < last_disk && (disks_info[i].major || disks_info[i].minor)) {
+ newstate = disks_info[i].state;
+ dv = map_dev_preferred(disks_info[i].major, disks_info[i].minor, 1,
prefer);
disc.state = newstate;
- disc.major = info[i].major;
- disc.minor = info[i].minor;
+ disc.major = disks_info[i].major;
+ disc.minor = disks_info[i].minor;
} else
newstate = (1 << MD_DISK_REMOVED);
@@ -716,14 +716,14 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
change = newstate ^ st->devstate[i];
if (st->utime && change && !st->err && !new_array) {
if ((st->devstate[i]&change) & (1 << MD_DISK_SYNC))
- alert("Fail", dev, dv, ainfo);
+ alert("Fail", dev, dv);
else if ((newstate & (1 << MD_DISK_FAULTY)) &&
(disc.major || disc.minor) &&
st->devid[i] == makedev(disc.major,
disc.minor))
- alert("FailSpare", dev, dv, ainfo);
+ alert("FailSpare", dev, dv);
else if ((newstate&change) & (1 << MD_DISK_SYNC))
- alert("SpareActive", dev, dv, ainfo);
+ alert("SpareActive", dev, dv);
}
st->devstate[i] = newstate;
st->devid[i] = makedev(disc.major, disc.minor);
@@ -747,13 +747,12 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
disappeared:
if (!st->err && !is_container)
- alert("DeviceDisappeared", dev, NULL, ainfo);
+ alert("DeviceDisappeared", dev, NULL);
st->err++;
goto out;
}
-static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist,
- int test, struct alert_info *info)
+static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist)
{
struct mdstat_ent *mse;
int new_found = 0;
@@ -806,8 +805,8 @@ static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist,
} else
st->parent_devnm[0] = 0;
*statelist = st;
- if (test)
- alert("TestMessage", st->devname, NULL, info);
+ if (info.test)
+ alert("TestMessage", st->devname, NULL);
new_found = 1;
}
return new_found;
@@ -971,7 +970,7 @@ static dev_t container_choose_spare(struct state *from, struct state *to,
return dev;
}
-static void try_spare_migration(struct state *statelist, struct alert_info *info)
+static void try_spare_migration(struct state *statelist)
{
struct state *from;
struct state *st;
@@ -1030,8 +1029,7 @@ static void try_spare_migration(struct state *statelist, struct alert_info *info
if (devid > 0 &&
move_spare(from->devname, to->devname,
devid)) {
- alert("MoveSpare", to->devname,
- from->devname, info);
+ alert("MoveSpare", to->devname, from->devname);
break;
}
}
--
2.38.1
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