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]; mdu_array_info_t array; struct mdstat_ent *mse = NULL, *mse2; char *dev = st->devname; int fd = -1; int i; int remaining_disks; int last_disk; int new_array = 0; if (test) alert("TestMessage", dev, NULL, ainfo); if (st->devnm[0]) fd = open("/sys/block", O_RDONLY|O_DIRECTORY); if (fd >= 0) { /* Don't open the device unless it is present and * active in sysfs. */ char buf[10]; close(fd); fd = sysfs_open(st->devnm, NULL, "array_state"); if (fd < 0 || read(fd, buf, 10) < 5 || strncmp(buf,"clear",5) == 0 || strncmp(buf,"inact",5) == 0) { if (fd >= 0) close(fd); fd = sysfs_open(st->devnm, NULL, "level"); if (fd < 0 || read(fd, buf, 10) != 0) { if (fd >= 0) close(fd); if (!st->err) alert("DeviceDisappeared", dev, NULL, ainfo); st->err++; return 0; } } close(fd); } fd = open(dev, O_RDONLY); if (fd < 0) { if (!st->err) alert("DeviceDisappeared", dev, NULL, ainfo); st->err++; return 0; } fcntl(fd, F_SETFD, FD_CLOEXEC); if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { if (!st->err) alert("DeviceDisappeared", dev, NULL, ainfo); st->err++; close(fd); return 0; } /* 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 && !st->from_config) alert("DeviceDisappeared", dev, " Wrong-Level", ainfo); st->err++; close(fd); return 0; } if (st->devnm[0] == 0) strcpy(st->devnm, fd2devnm(fd)); for (mse2 = mdstat ; mse2 ; mse2=mse2->next) if (strcmp(mse2->devnm, st->devnm) == 0) { mse2->devnm[0] = 0; /* flag it as "used" */ mse = mse2; } if (!mse) { /* duplicated array in statelist * or re-created after reading mdstat*/ st->err++; close(fd); return 0; } /* this array is in /proc/mdstat */ if (array.utime == 0) /* external arrays don't update utime, so * just make sure it is always different. */ array.utime = st->utime + 1;; if (st->err) { /* New array appeared where previously had an error */ st->err = 0; st->percent = RESYNC_NONE; new_array = 1; alert("NewArray", st->devname, NULL, ainfo); } if (st->utime == array.utime && st->failed == array.failed_disks && st->working == array.working_disks && st->spare == array.spare_disks && (mse == NULL || ( mse->percent == st->percent ))) { close(fd); if ((st->active < st->raid) && st->spare == 0) return 1; else return 0; } if (st->utime == 0 && /* new array */ mse->pattern && strchr(mse->pattern, '_') /* degraded */ ) alert("DegradedArray", dev, NULL, ainfo); if (st->utime == 0 && /* new array */ st->expected_spares > 0 && array.spare_disks < st->expected_spares) alert("SparesMissing", dev, NULL, ainfo); if (st->percent < 0 && st->percent != RESYNC_UNKNOWN && mse->percent >= 0) alert("RebuildStarted", dev, NULL, ainfo); if (st->percent >= 0 && mse->percent >= 0 && (mse->percent / increments) > (st->percent / increments)) { char percentalert[15]; // "RebuildNN" (10 chars) or "RebuildStarted" (15 chars) if((mse->percent / increments) == 0) snprintf(percentalert, sizeof(percentalert), "RebuildStarted"); else snprintf(percentalert, sizeof(percentalert), "Rebuild%02d", mse->percent); alert(percentalert, dev, NULL, ainfo); } if (mse->percent == RESYNC_NONE && 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->devnm, GET_MISMATCH); if (sra && sra->mismatch_cnt > 0) { char cnt[80]; snprintf(cnt, sizeof(cnt), " mismatches found: %d (on raid level %d)", sra->mismatch_cnt, array.level); alert("RebuildFinished", dev, cnt, ainfo); } else alert("RebuildFinished", dev, NULL, ainfo); if (sra) free(sra); } st->percent = mse->percent; remaining_disks = array.nr_disks; for (i=0; i<MAX_DISKS && remaining_disks > 0; i++) { mdu_disk_info_t disc; disc.number = i; if (ioctl(fd, GET_DISK_INFO, &disc) >= 0) { info[i].state = disc.state; info[i].major = disc.major; info[i].minor = disc.minor; if (disc.major || disc.minor) remaining_disks --; } else info[i].major = info[i].minor = 0; } last_disk = i; if (mse->metadata_version && strncmp(mse->metadata_version, "external:", 9) == 0 && is_subarray(mse->metadata_version+9)) { char *sl; strcpy(st->parent_devnm, mse->metadata_version+10); sl = strchr(st->parent_devnm, '/'); if (sl) *sl = 0; } else st->parent_devnm[0] = 0; if (st->metadata == NULL && st->parent_devnm[0] == 0) st->metadata = super_by_fd(fd, NULL); close(fd); for (i=0; i<MAX_DISKS; i++) { mdu_disk_info_t disc = {0,0,0,0,0}; int newstate=0; 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, prefer); disc.state = newstate; disc.major = info[i].major; disc.minor = info[i].minor; } else newstate = (1 << MD_DISK_REMOVED); if (dv == NULL && st->devid[i]) dv = map_dev_preferred( major(st->devid[i]), minor(st->devid[i]), 1, prefer); 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); else if ((newstate & (1<<MD_DISK_FAULTY)) && (disc.major || disc.minor) && st->devid[i] == makedev(disc.major, disc.minor)) alert("FailSpare", dev, dv, ainfo); else if ((newstate&change)&(1<<MD_DISK_SYNC)) alert("SpareActive", dev, dv, ainfo); } st->devstate[i] = newstate; st->devid[i] = makedev(disc.major, disc.minor); } st->active = array.active_disks; st->working = array.working_disks; st->spare = array.spare_disks; st->failed = array.failed_disks; st->utime = array.utime; st->raid = array.raid_disks; st->err = 0; if ((st->active < st->raid) && st->spare == 0) return 1; return 0; }
int Create(struct supertype *st, char *mddev, char *name, int *uuid, int subdevs, struct mddev_dev *devlist, struct shape *s, struct context *c, unsigned long long data_offset) { /* * Create a new raid array. * * First check that necessary details are available * (i.e. level, raid-disks) * * Then check each disk to see what might be on it * and report anything interesting. * * If anything looks odd, and runstop not set, * abort. * * SET_ARRAY_INFO and ADD_NEW_DISK, and * if runstop==run, or raiddisks disks were used, * RUN_ARRAY */ int mdfd; unsigned long long minsize=0, maxsize=0; char *mindisc = NULL; char *maxdisc = NULL; int dnum; struct mddev_dev *dv; int fail=0, warn=0; struct stat stb; int first_missing = subdevs * 2; int second_missing = subdevs * 2; int missing_disks = 0; int insert_point = subdevs * 2; /* where to insert a missing drive */ int total_slots; int pass; int vers; int rv; int bitmap_fd; int have_container = 0; int container_fd = -1; int need_mdmon = 0; unsigned long long bitmapsize; struct mdinfo info, *infos; int did_default = 0; int do_default_layout = 0; int do_default_chunk = 0; unsigned long safe_mode_delay = 0; char chosen_name[1024]; struct map_ent *map = NULL; unsigned long long newsize; int major_num = BITMAP_MAJOR_HI; memset(&info, 0, sizeof(info)); if (s->level == UnSet && st && st->ss->default_geometry) st->ss->default_geometry(st, &s->level, NULL, NULL); if (s->level == UnSet) { pr_err("a RAID level is needed to create an array.\n"); return CREATE_RAID_LEVEL_UNSET; } if (s->raiddisks < 4 && s->level == 6) { pr_err("at least 4 raid-devices needed for level 6\n"); return CREATE_RAID_DEVS_NOT_ENOUGH; } if (s->raiddisks > 256 && s->level == 6) { pr_err("no more than 256 raid-devices supported for level 6\n"); return CREATE_RAID_DEVS_OVER_256;; } if (s->raiddisks < 2 && s->level >= 4) { pr_err("at least 2 raid-devices needed for level 4 or 5\n"); return CREATE_RAID_DEVS_NOT_ENOUGH; } if (s->level <= 0 && s->sparedisks) { pr_err("This level does not support spare devices\n"); return CREATE_SPARE_DEVS_NOT_SUPPORT; } if (subdevs == 1 && strcmp(devlist->devname, "missing") != 0) { /* If given a single device, it might be a container, and we can * extract a device list from there */ mdu_array_info_t inf; int fd; memset(&inf, 0, sizeof(inf)); fd = open(devlist->devname, O_RDONLY); if (fd >= 0 && ioctl(fd, GET_ARRAY_INFO, &inf) == 0 && inf.raid_disks == 0) { /* yep, looks like a container */ if (st) { rv = st->ss->load_container(st, fd, devlist->devname); if (rv == 0) have_container = 1; } else { st = super_by_fd(fd, NULL); if (st && !(rv = st->ss-> load_container(st, fd, devlist->devname))) have_container = 1; else st = NULL; } if (have_container) { subdevs = s->raiddisks; first_missing = subdevs * 2; second_missing = subdevs * 2; insert_point = subdevs * 2; } } if (fd >= 0) close(fd); } if (st && st->ss->external && s->sparedisks) { pr_err("This metadata type does not support " "spare disks at create time\n"); return CREATE_SPARE_DEVS_NOT_SUPPORT; } if (subdevs > s->raiddisks+s->sparedisks) { pr_err("You have listed more devices (%d) than are in the array(%d)!\n", subdevs, s->raiddisks+s->sparedisks); return CREATE_LIST_DEVS_MORE_THAN_ARRAY_NEEDED; } if (!have_container && subdevs < s->raiddisks+s->sparedisks) { pr_err("You haven't given enough devices (real or missing) to create this array\n"); return CREATE_RAID_DEVS_NOT_ENOUGH; } if (s->bitmap_file && s->level <= 0) { pr_err("bitmaps not meaningful with level %s\n", map_num(pers, s->level)?:"given"); return CREATE_BITMAP_NOT_MEANINGFUL; }
int Manage_subdevs(char *devname, int fd, struct mddev_dev *devlist, int verbose, int test, char *update) { /* do something to each dev. * devmode can be * 'a' - add the device * try HOT_ADD_DISK * If that fails EINVAL, try ADD_NEW_DISK * 'r' - remove the device HOT_REMOVE_DISK * device can be 'faulty' or 'detached' in which case all * matching devices are removed. * 'f' - set the device faulty SET_DISK_FAULTY * device can be 'detached' in which case any device that * is inaccessible will be marked faulty. * For 'f' and 'r', the device can also be a kernel-internal * name such as 'sdb'. */ struct mddev_dev *add_devlist = NULL; mdu_array_info_t array; mdu_disk_info_t disc; unsigned long long array_size; struct mddev_dev *dv, *next = NULL; struct stat stb; int j, jnext = 0; int tfd = -1; struct supertype *st, *tst; char *subarray = NULL; int duuid[4]; int ouuid[4]; int lfd = -1; int sysfd = -1; int count = 0; /* number of actions taken */ if (ioctl(fd, GET_ARRAY_INFO, &array)) { fprintf(stderr, Name ": cannot get array info for %s\n", devname); return 1; } /* array.size is only 32 bit and may be truncated. * So read from sysfs if possible, and record number of sectors */ array_size = get_component_size(fd); if (array_size <= 0) array_size = array.size * 2; tst = super_by_fd(fd, &subarray); if (!tst) { fprintf(stderr, Name ": unsupport array - version %d.%d\n", array.major_version, array.minor_version); return 1; } stb.st_rdev = 0; for (dv = devlist, j=0 ; dv; dv = next, j = jnext) { unsigned long long ldsize; char dvname[20]; char *dnprintable = dv->devname; char *add_dev = dv->devname; int err; int re_add_failed = 0; next = dv->next; jnext = 0; if (strcmp(dv->devname, "failed")==0 || strcmp(dv->devname, "faulty")==0) { int remaining_disks = array.nr_disks; if (dv->disposition != 'r') { fprintf(stderr, Name ": %s only meaningful " "with -r, not -%c\n", dv->devname, dv->disposition); return 1; } for (; j < 1024 && remaining_disks > 0; j++) { unsigned dev; disc.number = j; if (ioctl(fd, GET_DISK_INFO, &disc)) continue; if (disc.major == 0 && disc.minor == 0) continue; remaining_disks --; if ((disc.state & 1) == 0) /* faulty */ continue; dev = makedev(disc.major, disc.minor); if (stb.st_rdev == dev) /* already did that one */ continue; stb.st_rdev = dev; next = dv; /* same slot again next time - things might * have reshuffled */ jnext = j; sprintf(dvname,"%d:%d", disc.major, disc.minor); dnprintable = dvname; break; } if (next != dv) continue; } else if (strcmp(dv->devname, "detached") == 0) { int remaining_disks = array.nr_disks; if (dv->disposition != 'r' && dv->disposition != 'f') { fprintf(stderr, Name ": %s only meaningful " "with -r of -f, not -%c\n", dv->devname, dv->disposition); return 1; } for (; j < 1024 && remaining_disks > 0; j++) { int sfd; unsigned dev; disc.number = j; if (ioctl(fd, GET_DISK_INFO, &disc)) continue; if (disc.major == 0 && disc.minor == 0) continue; remaining_disks --; sprintf(dvname,"%d:%d", disc.major, disc.minor); sfd = dev_open(dvname, O_RDONLY); if (sfd >= 0) { close(sfd); continue; } if (dv->disposition == 'f' && (disc.state & 1) == 1) /* already faulty */ continue; if (errno != ENXIO) continue; dev = makedev(disc.major, disc.minor); if (stb.st_rdev == dev) /* already did that one */ continue; stb.st_rdev = dev; next = dv; /* same slot again next time - things might * have reshuffled */ jnext = j; dnprintable = dvname; break; } if (next != dv) continue; } else if (strcmp(dv->devname, "missing") == 0) { if (dv->disposition != 'a' || dv->re_add == 0) { fprintf(stderr, Name ": 'missing' only meaningful " "with --re-add\n"); return 1; } if (add_devlist == NULL) add_devlist = conf_get_devs(); if (add_devlist == NULL) { fprintf(stderr, Name ": no devices to scan for missing members."); continue; } add_dev = add_devlist->devname; add_devlist = add_devlist->next; if (add_devlist != NULL) next = dv; if (stat(add_dev, &stb) < 0) continue; } else if (strchr(dv->devname, '/') == NULL && strchr(dv->devname, ':') == NULL && strlen(dv->devname) < 50) { /* Assume this is a kernel-internal name like 'sda1' */ int found = 0; char dname[55]; if (dv->disposition != 'r' && dv->disposition != 'f') { fprintf(stderr, Name ": %s only meaningful " "with -r or -f, not -%c\n", dv->devname, dv->disposition); return 1; } sprintf(dname, "dev-%s", dv->devname); sysfd = sysfs_open(fd2devnum(fd), dname, "block/dev"); if (sysfd >= 0) { char dn[20]; int mj,mn; if (sysfs_fd_get_str(sysfd, dn, 20) > 0 && sscanf(dn, "%d:%d", &mj,&mn) == 2) { stb.st_rdev = makedev(mj,mn); found = 1; } close(sysfd); sysfd = -1; } if (!found) { sysfd = sysfs_open(fd2devnum(fd), dname, "state"); if (sysfd < 0) { fprintf(stderr, Name ": %s does not appear " "to be a component of %s\n", dv->devname, devname); return 1; } } } else { j = 0; tfd = dev_open(dv->devname, O_RDONLY); if (tfd < 0 && dv->disposition == 'r' && lstat(dv->devname, &stb) == 0) /* Be happy, the lstat worked, that is * enough for --remove */ ; else { if (tfd < 0 || fstat(tfd, &stb) != 0) { fprintf(stderr, Name ": cannot find %s: %s\n", dv->devname, strerror(errno)); if (tfd >= 0) close(tfd); return 1; } close(tfd); tfd = -1; } if ((stb.st_mode & S_IFMT) != S_IFBLK) { fprintf(stderr, Name ": %s is not a " "block device.\n", dv->devname); return 1; } } switch(dv->disposition){ default: fprintf(stderr, Name ": internal error - devmode[%s]=%d\n", dv->devname, dv->disposition); return 1; case 'a': /* add the device */ if (subarray) { fprintf(stderr, Name ": Cannot add disks to a" " \'member\' array, perform this" " operation on the parent container\n"); return 1; } /* Make sure it isn't in use (in 2.6 or later) */ tfd = dev_open(add_dev, O_RDONLY|O_EXCL|O_DIRECT); if (tfd < 0 && add_dev != dv->devname) continue; if (tfd < 0) { fprintf(stderr, Name ": Cannot open %s: %s\n", dv->devname, strerror(errno)); return 1; } st = dup_super(tst); if (array.not_persistent==0) st->ss->load_super(st, tfd, NULL); if (add_dev == dv->devname) { if (!get_dev_size(tfd, dv->devname, &ldsize)) { close(tfd); return 1; } } else if (!get_dev_size(tfd, NULL, &ldsize)) { close(tfd); tfd = -1; continue; } if (!tst->ss->external && array.major_version == 0 && md_get_version(fd)%100 < 2) { close(tfd); tfd = -1; if (ioctl(fd, HOT_ADD_DISK, (unsigned long)stb.st_rdev)==0) { if (verbose >= 0) fprintf(stderr, Name ": hot added %s\n", add_dev); continue; } fprintf(stderr, Name ": hot add failed for %s: %s\n", add_dev, strerror(errno)); return 1; } if (array.not_persistent == 0 || tst->ss->external) { /* need to find a sample superblock to copy, and * a spare slot to use. * For 'external' array (well, container based), * We can just load the metadata for the array. */ if (tst->sb) /* already loaded */; else if (tst->ss->external) { tst->ss->load_container(tst, fd, NULL); } else for (j = 0; j < tst->max_devs; j++) { char *dev; int dfd; disc.number = j; if (ioctl(fd, GET_DISK_INFO, &disc)) continue; if (disc.major==0 && disc.minor==0) continue; if ((disc.state & 4)==0) continue; /* sync */ /* Looks like a good device to try */ dev = map_dev(disc.major, disc.minor, 1); if (!dev) continue; dfd = dev_open(dev, O_RDONLY); if (dfd < 0) continue; if (tst->ss->load_super(tst, dfd, NULL)) { close(dfd); continue; } close(dfd); break; } /* FIXME this is a bad test to be using */ if (!tst->sb) { close(tfd); fprintf(stderr, Name ": cannot load array metadata from %s\n", devname); return 1; } /* Make sure device is large enough */ if (tst->ss->avail_size(tst, ldsize/512) < array_size) { close(tfd); tfd = -1; if (add_dev != dv->devname) continue; fprintf(stderr, Name ": %s not large enough to join array\n", dv->devname); return 1; } /* Possibly this device was recently part of the array * and was temporarily removed, and is now being re-added. * If so, we can simply re-add it. */ tst->ss->uuid_from_super(tst, duuid); if (st->sb) { struct mdinfo mdi; st->ss->getinfo_super(st, &mdi, NULL); st->ss->uuid_from_super(st, ouuid); if ((mdi.disk.state & (1<<MD_DISK_ACTIVE)) && !(mdi.disk.state & (1<<MD_DISK_FAULTY)) && memcmp(duuid, ouuid, sizeof(ouuid))==0) { /* look like it is worth a try. Need to * make sure kernel will accept it though. */ /* re-add doesn't work for version-1 superblocks * before 2.6.18 :-( */ if (array.major_version == 1 && get_linux_version() <= 2006018) goto skip_re_add; disc.number = mdi.disk.number; if (ioctl(fd, GET_DISK_INFO, &disc) != 0 || disc.major != 0 || disc.minor != 0 || !enough_fd(fd)) goto skip_re_add; disc.major = major(stb.st_rdev); disc.minor = minor(stb.st_rdev); disc.number = mdi.disk.number; disc.raid_disk = mdi.disk.raid_disk; disc.state = mdi.disk.state; if (dv->writemostly == 1) disc.state |= 1 << MD_DISK_WRITEMOSTLY; if (dv->writemostly == 2) disc.state &= ~(1 << MD_DISK_WRITEMOSTLY); remove_partitions(tfd); close(tfd); tfd = -1; if (update) { int rv = -1; tfd = dev_open(dv->devname, O_RDWR); if (tfd >= 0) rv = st->ss->update_super( st, NULL, update, devname, verbose, 0, NULL); if (rv == 0) rv = st->ss->store_super(st, tfd); close(tfd); tfd = -1; if (rv != 0) { fprintf(stderr, Name ": failed to update" " superblock during re-add\n"); return 1; } } /* don't even try if disk is marked as faulty */ errno = 0; if (ioctl(fd, ADD_NEW_DISK, &disc) == 0) { if (verbose >= 0) fprintf(stderr, Name ": re-added %s\n", add_dev); count++; continue; } if (errno == ENOMEM || errno == EROFS) { fprintf(stderr, Name ": add new device failed for %s: %s\n", add_dev, strerror(errno)); if (add_dev != dv->devname) continue; return 1; } skip_re_add: re_add_failed = 1; } st->ss->free_super(st); } if (add_dev != dv->devname) { if (verbose > 0) fprintf(stderr, Name ": --re-add for %s to %s is not possible\n", add_dev, devname); if (tfd >= 0) { close(tfd); tfd = -1; } continue; } if (dv->re_add) { if (tfd >= 0) close(tfd); fprintf(stderr, Name ": --re-add for %s to %s is not possible\n", dv->devname, devname); return 1; } if (re_add_failed) { fprintf(stderr, Name ": %s reports being an active member for %s, but a --re-add fails.\n", dv->devname, devname); fprintf(stderr, Name ": not performing --add as that would convert %s in to a spare.\n", dv->devname); fprintf(stderr, Name ": To make this a spare, use \"mdadm --zero-superblock %s\" first.\n", dv->devname); if (tfd >= 0) close(tfd); return 1; } } else { /* non-persistent. Must ensure that new drive * is at least array.size big. */ if (ldsize/512 < array_size) { fprintf(stderr, Name ": %s not large enough to join array\n", dv->devname); if (tfd >= 0) close(tfd); return 1; } } /* committed to really trying this device now*/ if (tfd >= 0) { remove_partitions(tfd); close(tfd); tfd = -1; } /* in 2.6.17 and earlier, version-1 superblocks won't * use the number we write, but will choose a free number. * we must choose the same free number, which requires * starting at 'raid_disks' and counting up */ for (j = array.raid_disks; j< tst->max_devs; j++) { disc.number = j; if (ioctl(fd, GET_DISK_INFO, &disc)) break; if (disc.major==0 && disc.minor==0) break; if (disc.state & 8) /* removed */ break; } disc.major = major(stb.st_rdev); disc.minor = minor(stb.st_rdev); disc.number =j; disc.state = 0; if (array.not_persistent==0) { int dfd; if (dv->writemostly == 1) disc.state |= 1 << MD_DISK_WRITEMOSTLY; dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); if (tst->ss->add_to_super(tst, &disc, dfd, dv->devname)) { close(dfd); return 1; } if (tst->ss->write_init_super(tst)) { close(dfd); return 1; } } else if (dv->re_add) { /* this had better be raid1. * As we are "--re-add"ing we must find a spare slot * to fill. */ char *used = malloc(array.raid_disks); memset(used, 0, array.raid_disks); for (j=0; j< tst->max_devs; j++) { mdu_disk_info_t disc2; disc2.number = j; if (ioctl(fd, GET_DISK_INFO, &disc2)) continue; if (disc2.major==0 && disc2.minor==0) continue; if (disc2.state & 8) /* removed */ continue; if (disc2.raid_disk < 0) continue; if (disc2.raid_disk > array.raid_disks) continue; used[disc2.raid_disk] = 1; } for (j=0 ; j<array.raid_disks; j++) if (!used[j]) { disc.raid_disk = j; disc.state |= (1<<MD_DISK_SYNC); break; } free(used); } if (dv->writemostly == 1) disc.state |= (1 << MD_DISK_WRITEMOSTLY); if (tst->ss->external) { /* add a disk * to an external metadata container */ struct mdinfo new_mdi; struct mdinfo *sra; int container_fd; int devnum = fd2devnum(fd); int dfd; container_fd = open_dev_excl(devnum); if (container_fd < 0) { fprintf(stderr, Name ": add failed for %s:" " could not get exclusive access to container\n", dv->devname); tst->ss->free_super(tst); return 1; } dfd = dev_open(dv->devname, O_RDWR | O_EXCL|O_DIRECT); if (mdmon_running(tst->container_dev)) tst->update_tail = &tst->updates; if (tst->ss->add_to_super(tst, &disc, dfd, dv->devname)) { close(dfd); close(container_fd); return 1; } if (tst->update_tail) flush_metadata_updates(tst); else tst->ss->sync_metadata(tst); sra = sysfs_read(container_fd, -1, 0); if (!sra) { fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n", dv->devname); close(container_fd); tst->ss->free_super(tst); return 1; } sra->array.level = LEVEL_CONTAINER; /* Need to set data_offset and component_size */ tst->ss->getinfo_super(tst, &new_mdi, NULL); new_mdi.disk.major = disc.major; new_mdi.disk.minor = disc.minor; new_mdi.recovery_start = 0; /* Make sure fds are closed as they are O_EXCL which * would block add_disk */ tst->ss->free_super(tst); if (sysfs_add_disk(sra, &new_mdi, 0) != 0) { fprintf(stderr, Name ": add new device to external metadata" " failed for %s\n", dv->devname); close(container_fd); sysfs_free(sra); return 1; } ping_monitor_by_id(devnum); sysfs_free(sra); close(container_fd); } else { tst->ss->free_super(tst); if (ioctl(fd, ADD_NEW_DISK, &disc)) { fprintf(stderr, Name ": add new device failed for %s as %d: %s\n", dv->devname, j, strerror(errno)); return 1; } } if (verbose >= 0) fprintf(stderr, Name ": added %s\n", dv->devname); break; case 'r': /* hot remove */ if (subarray) { fprintf(stderr, Name ": Cannot remove disks from a" " \'member\' array, perform this" " operation on the parent container\n"); if (sysfd >= 0) close(sysfd); return 1; } if (tst->ss->external) { /* To remove a device from a container, we must * check that it isn't in use in an array. * This involves looking in the 'holders' * directory - there must be just one entry, * the container. * To ensure that it doesn't get used as a * hold spare while we are checking, we * get an O_EXCL open on the container */ int dnum = fd2devnum(fd); lfd = open_dev_excl(dnum); if (lfd < 0) { fprintf(stderr, Name ": Cannot get exclusive access " " to container - odd\n"); if (sysfd >= 0) close(sysfd); return 1; } /* in the detached case it is not possible to * check if we are the unique holder, so just * rely on the 'detached' checks */ if (strcmp(dv->devname, "detached") == 0 || sysfd >= 0 || sysfs_unique_holder(dnum, stb.st_rdev)) /* pass */; else { fprintf(stderr, Name ": %s is %s, cannot remove.\n", dnprintable, errno == EEXIST ? "still in use": "not a member"); close(lfd); return 1; } } /* FIXME check that it is a current member */ if (sysfd >= 0) { /* device has been removed and we don't know * the major:minor number */ int n = write(sysfd, "remove", 6); if (n != 6) err = -1; else err = 0; close(sysfd); sysfd = -1; } else { err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev); if (err && errno == ENODEV) { /* Old kernels rejected this if no personality * registered */ struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS); struct mdinfo *dv = NULL; if (sra) dv = sra->devs; for ( ; dv ; dv=dv->next) if (dv->disk.major == (int)major(stb.st_rdev) && dv->disk.minor == (int)minor(stb.st_rdev)) break; if (dv) err = sysfs_set_str(sra, dv, "state", "remove"); else err = -1; if (sra) sysfs_free(sra); } } if (err) { fprintf(stderr, Name ": hot remove failed " "for %s: %s\n", dnprintable, strerror(errno)); if (lfd >= 0) close(lfd); return 1; } if (tst->ss->external) { /* * Before dropping our exclusive open we make an * attempt at preventing mdmon from seeing an * 'add' event before reconciling this 'remove' * event. */ char *name = devnum2devname(fd2devnum(fd)); if (!name) { fprintf(stderr, Name ": unable to get container name\n"); return 1; } ping_manager(name); free(name); } if (lfd >= 0) close(lfd); count++; if (verbose >= 0) fprintf(stderr, Name ": hot removed %s from %s\n", dnprintable, devname); break; case 'f': /* set faulty */ /* FIXME check current member */ if ((sysfd >= 0 && write(sysfd, "faulty", 6) != 6) || (sysfd < 0 && ioctl(fd, SET_DISK_FAULTY, (unsigned long) stb.st_rdev))) { fprintf(stderr, Name ": set device faulty failed for %s: %s\n", dnprintable, strerror(errno)); if (sysfd >= 0) close(sysfd); return 1; } if (sysfd >= 0) close(sysfd); sysfd = -1; count++; if (verbose >= 0) fprintf(stderr, Name ": set %s faulty in %s\n", dnprintable, devname); break; } } if (test && count == 0) return 2; return 0; }