}
if (!f)
return 0;
- while (mel) {
+ for (; mel; mel = mel->next) {
+ if (mel->bad)
+ continue;
if (mel->devnum < 0)
fprintf(f, "mdp%d ", -1-mel->devnum);
else
fprintf(f, "%08x:%08x:%08x:%08x ", mel->uuid[0],
mel->uuid[1], mel->uuid[2], mel->uuid[3]);
fprintf(f, "%s\n", mel->path);
- mel = mel->next;
}
fflush(f);
err = ferror(f);
"/var/run/mdadm.map") == 0;
}
+
+static int lfd = -1;
+static int lsubdir = 0;
+int map_lock(struct map_ent **melp)
+{
+ if (lfd < 0) {
+ lfd = open("/var/run/mdadm/map.lock", O_CREAT|O_RDWR, 0600);
+ if (lfd < 0) {
+ lfd = open("/var/run/mdadm.map.lock", O_CREAT|O_RDWR, 0600);
+ lsubdir = 0;
+ } else
+ lsubdir = 1;
+ if (lfd < 0)
+ return -1;
+ if (lockf(lfd, F_LOCK, 0) != 0) {
+ close(lfd);
+ lfd = -1;
+ return -1;
+ }
+ }
+ if (*melp)
+ map_free(*melp);
+ map_read(melp);
+ return 0;
+}
+
+void map_unlock(struct map_ent **melp)
+{
+ if (lfd >= 0)
+ close(lfd);
+ if (lsubdir)
+ unlink("/var/run/mdadm/map.lock");
+ else
+ unlink("/var/run/mdadm.map.lock");
+ lfd = -1;
+}
+
void map_add(struct map_ent **melp,
int devnum, char *metadata, int uuid[4], char *path)
{
memcpy(me->uuid, uuid, 16);
me->path = strdup(path);
me->next = *melp;
+ me->bad = 0;
*melp = me;
}
*melp = NULL;
f = fopen("/var/run/mdadm/map", "r");
+ if (!f)
+ f = fopen("/var/run/mdadm.map", "r");
+ if (!f) {
+ RebuildMap();
+ f = fopen("/var/run/mdadm/map", "r");
+ }
if (!f)
f = fopen("/var/run/mdadm.map", "r");
if (!f)
if (!*map)
map_read(map);
- for (mp = *map ; mp ; mp = mp->next)
- if (memcmp(uuid, mp->uuid, 16) == 0)
- return mp;
+ for (mp = *map ; mp ; mp = mp->next) {
+ if (memcmp(uuid, mp->uuid, 16) != 0)
+ continue;
+ if (!mddev_busy(mp->devnum)) {
+ mp->bad = 1;
+ continue;
+ }
+ return mp;
+ }
+ return NULL;
+}
+
+struct map_ent *map_by_devnum(struct map_ent **map, int devnum)
+{
+ struct map_ent *mp;
+ if (!*map)
+ map_read(map);
+
+ for (mp = *map ; mp ; mp = mp->next) {
+ if (mp->devnum != devnum)
+ continue;
+ if (!mddev_busy(mp->devnum)) {
+ mp->bad = 1;
+ continue;
+ }
+ return mp;
+ }
return NULL;
+}
+
+struct map_ent *map_by_name(struct map_ent **map, char *name)
+{
+ struct map_ent *mp;
+ if (!*map)
+ map_read(map);
+
+ for (mp = *map ; mp ; mp = mp->next) {
+ if (strncmp(mp->path, "/dev/md/", 8) != 0)
+ continue;
+ if (strcmp(mp->path+8, name) != 0)
+ continue;
+ if (!mddev_busy(mp->devnum)) {
+ mp->bad = 1;
+ continue;
+ }
+ return mp;
+ }
+ return NULL;
+}
+void RebuildMap(void)
+{
+ struct mdstat_ent *mdstat = mdstat_read(0, 0);
+ struct mdstat_ent *md;
+ struct map_ent *map = NULL;
+ int mdp = get_mdp_major();
+
+ for (md = mdstat ; md ; md = md->next) {
+ struct mdinfo *sra = sysfs_read(-1, md->devnum, GET_DEVS|SKIP_GONE_DEVS);
+ struct mdinfo *sd;
+
+ if (!sra)
+ continue;
+
+ for (sd = sra->devs ; sd ; sd = sd->next) {
+ char dn[30];
+ int dfd;
+ int ok;
+ struct supertype *st;
+ char *path;
+ struct mdinfo info;
+
+ sprintf(dn, "%d:%d", sd->disk.major, sd->disk.minor);
+ dfd = dev_open(dn, O_RDONLY);
+ if (dfd < 0)
+ continue;
+ st = guess_super(dfd);
+ if ( st == NULL)
+ ok = -1;
+ else
+ ok = st->ss->load_super(st, dfd, NULL);
+ close(dfd);
+ if (ok != 0)
+ continue;
+ st->ss->getinfo_super(st, &info);
+ if (md->devnum > 0)
+ path = map_dev(MD_MAJOR, md->devnum, 0);
+ else
+ path = map_dev(mdp, (-1-md->devnum)<< 6, 0);
+ map_add(&map, md->devnum,
+ info.text_version,
+ info.uuid, path ? : "/unknown");
+ st->ss->free_super(st);
+ break;
+ }
+ sysfs_free(sra);
+ }
+ map_write(map);
+ map_free(map);
+ for (md = mdstat ; md ; md = md->next) {
+ struct mdinfo *sra = sysfs_read(-1, md->devnum, GET_VERSION);
+ sysfs_uevent(sra, "change");
+ sysfs_free(sra);
+ }
+ free_mdstat(mdstat);
}