X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=Monitor.c;h=af531294cc53c908ea7a1b88f7a1e0870c5c62bf;hp=c94bfd85d6e188d8710c6cc764a12751cfd2cac1;hb=8844e291492b82f4bae6129673fb383a309514c0;hpb=4f589ad0c5e95154dc6ffabfc2e9493feabe9ab6 diff --git a/Monitor.c b/Monitor.c index c94bfd85..af531294 100644 --- a/Monitor.c +++ b/Monitor.c @@ -31,14 +31,14 @@ #include "md_p.h" #include "md_u.h" #include -#include -#include +#include +#include #include static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mailfrom, char *cmd, int dosyslog); -static char *percentalerts[] = { +static char *percentalerts[] = { "RebuildStarted", "Rebuild20", "Rebuild40", @@ -54,7 +54,7 @@ static char *percentalerts[] = { int Monitor(mddev_dev_t devlist, char *mailaddr, char *alert_cmd, int period, int daemonise, int scan, int oneshot, - int dosyslog, char *config, int test, char* pidfile) + int dosyslog, int test, char* pidfile) { /* * Every few seconds, scan every md device looking for changes @@ -116,15 +116,15 @@ int Monitor(mddev_dev_t devlist, char *mailfrom = NULL; if (!mailaddr) { - mailaddr = conf_get_mailaddr(config); + mailaddr = conf_get_mailaddr(); if (mailaddr && ! scan) fprintf(stderr, Name ": Monitor using email address \"%s\" from config file\n", mailaddr); } - mailfrom = conf_get_mailfrom(config); + mailfrom = conf_get_mailfrom(); if (!alert_cmd) { - alert_cmd = conf_get_program(config); + alert_cmd = conf_get_program(); if (alert_cmd && ! scan) fprintf(stderr, Name ": Monitor using program \"%s\" from config file\n", alert_cmd); @@ -156,23 +156,26 @@ int Monitor(mddev_dev_t devlist, return 1; } close(0); - open("/dev/null", 3); + open("/dev/null", O_RDWR); dup2(0,1); dup2(0,2); setsid(); } if (devlist == NULL) { - mddev_ident_t mdlist = conf_get_ident(config, NULL); + mddev_ident_t mdlist = conf_get_ident(NULL); for (; mdlist; mdlist=mdlist->next) { - struct state *st = malloc(sizeof *st); + struct state *st; + if (mdlist->devname == NULL) + continue; + st = malloc(sizeof *st); if (st == NULL) continue; st->devname = strdup(mdlist->devname); st->utime = 0; st->next = statelist; st->err = 0; - st->devnum = MAXINT; + st->devnum = INT_MAX; st->percent = -2; st->expected_spares = mdlist->spare_disks; if (mdlist->spare_group) @@ -184,7 +187,7 @@ int Monitor(mddev_dev_t devlist, } else { mddev_dev_t dv; for (dv=devlist ; dv; dv=dv->next) { - mddev_ident_t mdlist = conf_get_ident(config, dv->devname); + mddev_ident_t mdlist = conf_get_ident(dv->devname); struct state *st = malloc(sizeof *st); if (st == NULL) continue; @@ -192,7 +195,7 @@ int Monitor(mddev_dev_t devlist, st->utime = 0; st->next = statelist; st->err = 0; - st->devnum = MAXINT; + st->devnum = INT_MAX; st->percent = -2; st->expected_spares = -1; st->spare_group = NULL; @@ -215,6 +218,7 @@ int Monitor(mddev_dev_t devlist, mdstat = mdstat_read(oneshot?0:1, 0); for (st=statelist; st; st=st->next) { + struct { int state, major, minor; } info[MaxDisks]; mdu_array_info_t array; struct mdstat_ent *mse = NULL, *mse2; char *dev = st->devname; @@ -233,6 +237,7 @@ int Monitor(mddev_dev_t devlist, */ st->err=1; continue; } + fcntl(fd, F_SETFD, FD_CLOEXEC); if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { if (!st->err) alert("DeviceDisappeared", dev, NULL, @@ -243,8 +248,10 @@ int Monitor(mddev_dev_t devlist, close(fd); continue; } - if (array.level != 1 && array.level != 5 && array.level != -4 && - array.level != 6 && array.level != 10) { + /* It's much easier to list what array levels can't + * have a device disappear than all of them that can + */ + if (array.level == 0 || array.level == -1) { if (!st->err) alert("DeviceDisappeared", dev, "Wrong-Level", mailaddr, mailfrom, alert_cmd, dosyslog); @@ -252,7 +259,7 @@ int Monitor(mddev_dev_t devlist, close(fd); continue; } - if (st->devnum == MAXINT) { + if (st->devnum == INT_MAX) { struct stat stb; if (fstat(fd, &stb) == 0 && (S_IFMT&stb.st_mode)==S_IFBLK) { @@ -265,7 +272,7 @@ int Monitor(mddev_dev_t devlist, for (mse2 = mdstat ; mse2 ; mse2=mse2->next) if (mse2->devnum == st->devnum) { - mse2->devnum = MAXINT; /* flag it as "used" */ + mse2->devnum = INT_MAX; /* flag it as "used" */ mse = mse2; } @@ -287,11 +294,11 @@ int Monitor(mddev_dev_t devlist, alert("DegradedArray", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); if (st->utime == 0 && /* new array */ - st->expected_spares > 0 && - array.spare_disks < st->expected_spares) + st->expected_spares > 0 && + array.spare_disks < st->expected_spares) alert("SparesMissing", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); if (mse && - st->percent == -1 && + st->percent == -1 && mse->percent >= 0) alert("RebuildStarted", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); if (mse && @@ -303,14 +310,42 @@ int Monitor(mddev_dev_t devlist, if (mse && mse->percent == -1 && - st->percent >= 0) - alert("RebuildFinished", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); + st->percent >= 0) { + /* Rebuild/sync/whatever just finished. + * If there is a number in /mismatch_cnt, + * we should report that. + */ + struct mdinfo *sra = + sysfs_read(-1, st->devnum, GET_MISMATCH); + if (sra && sra->mismatch_cnt > 0) { + char cnt[40]; + sprintf(cnt, " mismatches found: %d", sra->mismatch_cnt); + alert("RebuildFinished", dev, cnt, mailaddr, mailfrom, alert_cmd, dosyslog); + } else + alert("RebuildFinished", dev, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); + if (sra) + free(sra); + } if (mse) st->percent = mse->percent; - for (i=0; i= 0) { + info[i].state = disc.state; + info[i].major = disc.major; + info[i].minor = disc.minor; + } else + info[i].major = info[i].minor = 0; + } + close(fd); + + for (i=0; i array.raid_disks + array.nr_disks) { newstate = 0; disc.major = disc.minor = 0; - } else if (ioctl(fd, GET_DISK_INFO, &disc)>= 0) { - newstate = disc.state; - dv = map_dev(disc.major, disc.minor, 1); + } else if (info[i].major || info[i].minor) { + newstate = info[i].state; + dv = map_dev(info[i].major, info[i].minor, 1); + disc.state = newstate; + disc.major = info[i].major; + disc.minor = info[i].minor; } else if (mse && mse->pattern && i < strlen(mse->pattern)) { switch(mse->pattern[i]) { case 'U': newstate = 6 /* ACTIVE/SYNC */; break; @@ -352,10 +390,9 @@ int Monitor(mddev_dev_t devlist, ) alert("SpareActive", dev, dv, mailaddr, mailfrom, alert_cmd, dosyslog); } - st->devstate[i] = disc.state; + st->devstate[i] = newstate; st->devid[i] = makedev(disc.major, disc.minor); } - close(fd); st->active = array.active_disks; st->working = array.working_disks; st->spare = array.spare_disks; @@ -367,11 +404,11 @@ int Monitor(mddev_dev_t devlist, /* now check if there are any new devices found in mdstat */ if (scan) { struct mdstat_ent *mse; - for (mse=mdstat; mse; mse=mse->next) - if (mse->devnum != MAXINT && - (strcmp(mse->level, "raid1")==0 || - strcmp(mse->level, "raid5")==0 || - strcmp(mse->level, "multipath")==0) + for (mse=mdstat; mse; mse=mse->next) + if (mse->devnum != INT_MAX && + mse->level && + (strcmp(mse->level, "raid0")!=0 && + strcmp(mse->level, "linear")!=0) ) { struct state *st = malloc(sizeof *st); mdu_array_info_t array; @@ -383,6 +420,7 @@ int Monitor(mddev_dev_t devlist, ioctl(fd, GET_ARRAY_INFO, &array)< 0) { /* no such array */ if (fd >=0) close(fd); + put_md_name(st->devname); free(st->devname); free(st); continue; @@ -396,6 +434,8 @@ int Monitor(mddev_dev_t devlist, st->spare_group = NULL; st->expected_spares = -1; statelist = st; + if (test) + alert("TestMessage", st->devname, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); alert("NewArray", st->devname, NULL, mailaddr, mailfrom, alert_cmd, dosyslog); new_found = 1; } @@ -433,7 +473,7 @@ int Monitor(mddev_dev_t devlist, } } if (dev > 0) { - if (ioctl(fd2, HOT_REMOVE_DISK, + if (ioctl(fd2, HOT_REMOVE_DISK, (unsigned long)dev) == 0) { if (ioctl(fd1, HOT_ADD_DISK, (unsigned long)dev) == 0) { @@ -470,7 +510,7 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mail if (!cmd && !mailaddr) { time_t now = time(0); - + printf("%1.15s: %s on %s %s\n", ctime(&now)+4, event, dev, disc?disc:"unknown device"); } if (cmd) { @@ -486,8 +526,8 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mail exit(2); } } - if (mailaddr && - (strncmp(event, "Fail", 4)==0 || + if (mailaddr && + (strncmp(event, "Fail", 4)==0 || strncmp(event, "Test", 4)==0 || strncmp(event, "Spares", 6)==0 || strncmp(event, "Degrade", 7)==0)) { @@ -509,8 +549,10 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mail fprintf(mp, "A %s event had been detected on md device %s.\n\n", event, dev); - if (disc) + if (disc && disc[0] != ' ') fprintf(mp, "It could be related to component device %s.\n\n", disc); + if (disc && disc[0] == ' ') + fprintf(mp, "Extra information:%s.\n\n", disc); fprintf(mp, "Faithfully yours, etc.\n"); @@ -518,9 +560,9 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mail if (mdstat) { char buf[8192]; int n; - fprintf(mp, "\nP.S. The /proc/mdstat file current contains the following:\n\n"); + fprintf(mp, "\nP.S. The /proc/mdstat file currently contains the following:\n\n"); while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0) - fwrite(buf, 1, n, mp); + n=fwrite(buf, 1, n, mp); /* yes, i don't care about the result */ fclose(mdstat); } fclose(mp); @@ -552,3 +594,146 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mail syslog(priority, "%s event detected on md device %s", event, dev); } } + +/* Not really Monitor but ... */ +int Wait(char *dev) +{ + struct stat stb; + int devnum; + int rv = 1; + + if (stat(dev, &stb) != 0) { + fprintf(stderr, Name ": Cannot find %s: %s\n", dev, + strerror(errno)); + return 2; + } + devnum = stat2devnum(&stb); + + while(1) { + struct mdstat_ent *ms = mdstat_read(1, 0); + struct mdstat_ent *e; + + for (e=ms ; e; e=e->next) + if (e->devnum == devnum) + break; + + if (!e || e->percent < 0) { + if (e && e->metadata_version && + strncmp(e->metadata_version, "external:", 9) == 0) { + if (is_subarray(&e->metadata_version[9])) + ping_monitor(&e->metadata_version[9]); + else + ping_monitor(devnum2devname(devnum)); + } + free_mdstat(ms); + return rv; + } + free_mdstat(ms); + rv = 0; + mdstat_wait(5); + } +} + +static char *clean_states[] = { + "clear", "inactive", "readonly", "read-auto", "clean", NULL }; + +int WaitClean(char *dev, int verbose) +{ + int fd; + struct mdinfo *mdi; + int rv = 1; + int devnum; + + fd = open(dev, O_RDONLY); + if (fd < 0) { + if (verbose) + fprintf(stderr, Name ": Couldn't open %s: %s\n", dev, strerror(errno)); + return 1; + } + + devnum = fd2devnum(fd); + mdi = sysfs_read(fd, devnum, GET_VERSION|GET_LEVEL|GET_SAFEMODE); + if (!mdi) { + if (verbose) + fprintf(stderr, Name ": Failed to read sysfs attributes for " + "%s\n", dev); + close(fd); + return 0; + } + + switch(mdi->array.level) { + case LEVEL_LINEAR: + case LEVEL_MULTIPATH: + case 0: + /* safemode delay is irrelevant for these levels */ + rv = 0; + + } + + /* for internal metadata the kernel handles the final clean + * transition, containers can never be dirty + */ + if (!is_subarray(mdi->text_version)) + rv = 0; + + /* safemode disabled ? */ + if (mdi->safe_mode_delay == 0) + rv = 0; + + if (rv) { + int state_fd = sysfs_open(fd2devnum(fd), NULL, "array_state"); + char buf[20]; + fd_set fds; + struct timeval tm; + + /* minimize the safe_mode_delay and prepare to wait up to 5s + * for writes to quiesce + */ + sysfs_set_safemode(mdi, 1); + tm.tv_sec = 5; + tm.tv_usec = 0; + + /* give mdmon a chance to checkpoint resync */ + sysfs_set_str(mdi, NULL, "sync_action", "idle"); + + FD_ZERO(&fds); + + /* wait for array_state to be clean */ + while (1) { + rv = read(state_fd, buf, sizeof(buf)); + if (rv < 0) + break; + if (sysfs_match_word(buf, clean_states) <= 4) + break; + FD_SET(state_fd, &fds); + rv = select(state_fd + 1, &fds, NULL, NULL, &tm); + if (rv < 0 && errno != EINTR) + break; + lseek(state_fd, 0, SEEK_SET); + } + if (rv < 0) + rv = 1; + else if (ping_monitor(mdi->text_version) == 0) { + /* we need to ping to close the window between array + * state transitioning to clean and the metadata being + * marked clean + */ + rv = 0; + } else + rv = 1; + if (rv && verbose) + fprintf(stderr, Name ": Error waiting for %s to be clean\n", + dev); + + /* restore the original safe_mode_delay */ + sysfs_set_safemode(mdi, mdi->safe_mode_delay); + close(state_fd); + } + + sysfs_free(mdi); + close(fd); + + return rv; +} + +