From 50232a6ec4a5c46c608181d72d0c633831a03134 Mon Sep 17 00:00:00 2001 From: Mateusz Grzonka Date: Thu, 2 Feb 2023 12:27:00 +0100 Subject: [PATCH 088/120] Mdmonitor: Pass events to alert() using enums instead of strings Add events enum, and mapping_t struct, that maps them to strings, so that enums are passed around instead of strings. Signed-off-by: Mateusz Grzonka Acked-by: Coly Li Signed-off-by: Jes Sorensen --- Monitor.c | 136 +++++++++++++++++++++++++++++++++--------------------- 1 file changed, 83 insertions(+), 53 deletions(-) diff --git a/Monitor.c b/Monitor.c index 9ef4dab8..029e9efd 100644 --- a/Monitor.c +++ b/Monitor.c @@ -32,6 +32,8 @@ #include #endif +#define EVENT_NAME_MAX 32 + struct state { char devname[MD_NAME_MAX + sizeof("/dev/md/")]; /* length of "/dev/md/" + device name + terminating byte*/ char devnm[MD_NAME_MAX]; /* to sync with mdstat info */ @@ -65,10 +67,43 @@ struct alert_info { int dosyslog; int test; } info; + +enum event { + EVENT_SPARE_ACTIVE = 0, + EVENT_NEW_ARRAY, + EVENT_MOVE_SPARE, + EVENT_TEST_MESSAGE, + EVENT_REBUILD_STARTED, + EVENT_REBUILD, + EVENT_REBUILD_FINISHED, + EVENT_SPARES_MISSING, + EVENT_DEVICE_DISAPPEARED, + EVENT_FAIL, + EVENT_FAIL_SPARE, + EVENT_DEGRADED_ARRAY, + EVENT_UNKNOWN +}; + +mapping_t events_map[] = { + {"SpareActive", EVENT_SPARE_ACTIVE}, + {"NewArray", EVENT_NEW_ARRAY}, + {"MoveSpare", EVENT_MOVE_SPARE}, + {"TestMessage", EVENT_TEST_MESSAGE}, + {"RebuildStarted", EVENT_REBUILD_STARTED}, + {"Rebuild", EVENT_REBUILD}, + {"RebuildFinished", EVENT_REBUILD_FINISHED}, + {"SparesMissing", EVENT_SPARES_MISSING}, + {"DeviceDisappeared", EVENT_DEVICE_DISAPPEARED}, + {"Fail", EVENT_FAIL}, + {"FailSpare", EVENT_FAIL_SPARE}, + {"DegradedArray", EVENT_DEGRADED_ARRAY}, + {NULL, EVENT_UNKNOWN} +}; + 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); +static void alert(const enum event event_enum, const unsigned int progress, 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); @@ -415,7 +450,7 @@ static void write_autorebuild_pid() } } -static void execute_alert_cmd(const char *event, const char *dev, const char *disc) +static void execute_alert_cmd(const char *event_name, const char *dev, const char *disc) { int pid = fork(); @@ -427,12 +462,12 @@ 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_name, dev, disc, NULL); exit(2); } } -static void send_event_email(const char *event, const char *dev, const char *disc) +static void send_event_email(const char *event_name, const char *dev, const char *disc) { FILE *mp, *mdstat; char buf[BUFSIZ]; @@ -450,9 +485,9 @@ static void send_event_email(const char *event, const char *dev, const char *dis else fprintf(mp, "From: %s monitoring \n", Name); fprintf(mp, "To: %s\n", info.mailaddr); - fprintf(mp, "Subject: %s event on %s:%s\n\n", event, dev, info.hostname); + fprintf(mp, "Subject: %s event on %s:%s\n\n", event_name, 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); + fprintf(mp, "A %s event had been detected on md device %s.\n\n", event_name, dev); if (disc && disc[0] != ' ') fprintf(mp, @@ -474,20 +509,20 @@ static void send_event_email(const char *event, const char *dev, const char *dis pclose(mp); } -static void log_event_to_syslog(const char *event, const char *dev, const char *disc) +static void log_event_to_syslog(const enum event event_enum, const char *event_name, const char *dev, const char *disc) { int priority; /* Log at a different severity depending on the event. * * These are the critical events: */ - if (strncmp(event, "Fail", 4) == 0 || - strncmp(event, "Degrade", 7) == 0 || - strncmp(event, "DeviceDisappeared", 17) == 0) + if (event_enum == EVENT_FAIL || + event_enum == EVENT_DEGRADED_ARRAY || + event_enum == EVENT_DEVICE_DISAPPEARED) priority = LOG_CRIT; /* Good to know about, but are not failures: */ - else if (strncmp(event, "Rebuild", 7) == 0 || - strncmp(event, "MoveSpare", 9) == 0 || - strncmp(event, "Spares", 6) != 0) + else if (event_enum == EVENT_REBUILD || + event_enum == EVENT_MOVE_SPARE || + event_enum == EVENT_SPARES_MISSING) priority = LOG_WARNING; /* Everything else: */ else @@ -495,33 +530,37 @@ static void log_event_to_syslog(const char *event, const char *dev, const char * if (disc && disc[0] != ' ') syslog(priority, - "%s event detected on md device %s, component device %s", event, dev, disc); + "%s event detected on md device %s, component device %s", + event_name, dev, disc); else if (disc) - syslog(priority, "%s event detected on md device %s: %s", event, dev, disc); + syslog(priority, "%s event detected on md device %s: %s", event_name, dev, disc); else - syslog(priority, "%s event detected on md device %s", event, dev); + syslog(priority, "%s event detected on md device %s", event_name, dev); } -static void alert(const char *event, const char *dev, const char *disc) +static void alert(const enum event event_enum, const unsigned int progress, const char *dev, const char *disc) { - if (!info.alert_cmd && !info.mailaddr && !info.dosyslog) { - time_t now = time(0); + char event_name[EVENT_NAME_MAX]; - printf("%1.15s: %s on %s %s\n", ctime(&now) + 4, - event, dev, disc?disc:"unknown device"); + if (event_enum == EVENT_REBUILD) { + snprintf(event_name, sizeof(event_name), "%s%02d", + map_num_s(events_map, EVENT_REBUILD), progress); + } else { + snprintf(event_name, sizeof(event_name), "%s", map_num_s(events_map, event_enum)); } + if (info.alert_cmd) - execute_alert_cmd(event, dev, disc); + execute_alert_cmd(event_name, dev, disc); - 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); + if (info.mailaddr && (event_enum == EVENT_FAIL || + event_enum == EVENT_TEST_MESSAGE || + event_enum == EVENT_SPARES_MISSING || + event_enum == EVENT_DEGRADED_ARRAY)) { + send_event_email(event_name, dev, disc); } if (info.dosyslog) - log_event_to_syslog(event, dev, disc); + log_event_to_syslog(event_enum, event_name, dev, disc); } static int check_array(struct state *st, struct mdstat_ent *mdstat, @@ -546,7 +585,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat, unsigned long redundancy_only_flags = 0; if (info.test) - alert("TestMessage", dev, NULL); + alert(EVENT_TEST_MESSAGE, 0, dev, NULL); retval = 0; @@ -595,7 +634,7 @@ 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"); + alert(EVENT_DEVICE_DISAPPEARED, 0, dev, " Wrong-Level"); st->err++; goto out; } @@ -612,7 +651,7 @@ 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); + alert(EVENT_NEW_ARRAY, 0, st->devname, NULL); } if (st->utime == array.utime && st->failed == sra->array.failed_disks && @@ -625,29 +664,20 @@ 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); + alert(EVENT_DEGRADED_ARRAY, 0, dev, NULL); if (st->utime == 0 && /* new array */ st->expected_spares > 0 && sra->array.spare_disks < st->expected_spares) - alert("SparesMissing", dev, NULL); + alert(EVENT_SPARES_MISSING, 0, dev, NULL); if (st->percent < 0 && st->percent != RESYNC_UNKNOWN && mse->percent >= 0) - alert("RebuildStarted", dev, NULL); + alert(EVENT_REBUILD_STARTED, 0, dev, NULL); if (st->percent >= 0 && mse->percent >= 0 && (mse->percent / increments) > (st->percent / increments)) { - char percentalert[18]; - /* - * "RebuildNN" (10 chars) or "RebuildStarted" (15 chars) - */ - if((mse->percent / increments) == 0) - snprintf(percentalert, sizeof(percentalert), - "RebuildStarted"); + alert(EVENT_REBUILD_STARTED, 0, dev, NULL); else - snprintf(percentalert, sizeof(percentalert), - "Rebuild%02d", mse->percent); - - alert(percentalert, dev, NULL); + alert(EVENT_REBUILD, mse->percent, dev, NULL); } if (mse->percent == RESYNC_NONE && st->percent >= 0) { @@ -660,9 +690,9 @@ 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); + alert(EVENT_REBUILD_FINISHED, 0, dev, cnt); } else - alert("RebuildFinished", dev, NULL); + alert(EVENT_REBUILD_FINISHED, 0, dev, NULL); } st->percent = mse->percent; @@ -716,14 +746,14 @@ 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); + alert(EVENT_FAIL, 0, 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); + alert(EVENT_FAIL_SPARE, 0, dev, dv); else if ((newstate&change) & (1 << MD_DISK_SYNC)) - alert("SpareActive", dev, dv); + alert(EVENT_SPARE_ACTIVE, 0, dev, dv); } st->devstate[i] = newstate; st->devid[i] = makedev(disc.major, disc.minor); @@ -747,7 +777,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat, disappeared: if (!st->err && !is_container) - alert("DeviceDisappeared", dev, NULL); + alert(EVENT_DEVICE_DISAPPEARED, 0, dev, NULL); st->err++; goto out; } @@ -806,7 +836,7 @@ static int add_new_arrays(struct mdstat_ent *mdstat, struct state **statelist) st->parent_devnm[0] = 0; *statelist = st; if (info.test) - alert("TestMessage", st->devname, NULL); + alert(EVENT_TEST_MESSAGE, 0, st->devname, NULL); new_found = 1; } return new_found; @@ -1029,7 +1059,7 @@ static void try_spare_migration(struct state *statelist) if (devid > 0 && move_spare(from->devname, to->devname, devid)) { - alert("MoveSpare", to->devname, from->devname); + alert(EVENT_MOVE_SPARE, 0, to->devname, from->devname); break; } } -- 2.38.1