]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - Incremental.c
Don't break long strings onto multiple lines.
[thirdparty/mdadm.git] / Incremental.c
index f256b48de64d8185e1df6e54cf96dfbddb8abc57..87d91140494dbb35d7f87a59954c6bd87cda0ba9 100644 (file)
@@ -44,9 +44,9 @@ static int try_spare(char *devname, int *dfdp, struct dev_policy *pol,
                     struct supertype *st, int verbose);
 
 static int Incremental_container(struct supertype *st, char *devname,
-                                struct context *c);
+                                struct context *c, char *only);
 
-int Incremental(char *devname, struct context *c,
+int Incremental(struct mddev_dev *devlist, struct context *c,
                struct supertype *st)
 {
        /* Add this device to an array, creating the array if necessary
@@ -91,6 +91,7 @@ int Incremental(char *devname, struct context *c,
        struct mdinfo *sra = NULL, *d;
        struct mddev_ident *match;
        char chosen_name[1024];
+       char *md_devname;
        int rv = 1;
        struct map_ent *mp, *map = NULL;
        int dfd = -1, mdfd = -1;
@@ -102,6 +103,7 @@ int Incremental(char *devname, struct context *c,
        struct dev_policy *policy = NULL;
        struct map_ent target_array;
        int have_target;
+       char *devname = devlist->devname;
 
        struct createinfo *ci = conf_get_create_info();
 
@@ -136,9 +138,10 @@ int Incremental(char *devname, struct context *c,
                close(dfd);
                if (!rv && st->ss->container_content) {
                        if (map_lock(&map))
-                               pr_err("failed to get "
-                                      "exclusive lock on mapfile\n");
-                       rv = Incremental_container(st, devname, c);
+                               pr_err("failed to get exclusive lock on mapfile\n");
+                       if (c->export)
+                               printf("MD_DEVNAME=%s\n", devname);
+                       rv = Incremental_container(st, devname, c, NULL);
                        map_unlock(&map);
                        return rv;
                }
@@ -150,7 +153,20 @@ int Incremental(char *devname, struct context *c,
 
        /* 1/ Check if device is permitted by mdadm.conf */
 
-       if (!conf_test_dev(devname)) {
+       for (;devlist; devlist = devlist->next)
+               if (conf_test_dev(devlist->devname))
+                       break;
+       if (!devlist) {
+               devlist = conf_get_devs();
+               for (;devlist; devlist = devlist->next) {
+                       struct stat st2;
+                       if (stat(devlist->devname, &st2) == 0 &&
+                           (st2.st_mode & S_IFMT) == S_IFBLK &&
+                           st2.st_rdev == stb.st_rdev)
+                               break;
+               }
+       }
+       if (!devlist) {
                if (c->verbose >= 0)
                        pr_err("%s not permitted by mdadm.conf.\n",
                               devname);
@@ -179,13 +195,13 @@ int Incremental(char *devname, struct context *c,
        policy = disk_policy(&dinfo);
        have_target = policy_check_path(&dinfo, &target_array);
 
-       if (st == NULL && (st = guess_super(dfd)) == NULL) {
+       if (st == NULL && (st = guess_super_type(dfd, guess_array)) == NULL) {
                if (c->verbose >= 0)
                        pr_err("no recognisable superblock on %s.\n",
                               devname);
                rv = try_spare(devname, &dfd, policy,
                               have_target ? &target_array : NULL,
-                              st, c->verbose);
+                              NULL, c->verbose);
                goto out;
        }
        st->ignore_hw_compat = 1;
@@ -212,8 +228,7 @@ int Incremental(char *devname, struct context *c,
        if (match && match->devname
            && strcasecmp(match->devname, "<ignore>") == 0) {
                if (c->verbose >= 0)
-                       pr_err("array containing %s is explicitly"
-                               " ignored by mdadm.conf\n",
+                       pr_err("array containing %s is explicitly ignored by mdadm.conf\n",
                                devname);
                goto out;
        }
@@ -234,8 +249,7 @@ int Incremental(char *devname, struct context *c,
        if (!match && !conf_test_metadata(st->ss->name, policy,
                                          (trustworthy == LOCAL))) {
                if (c->verbose >= 1)
-                       pr_err("%s has metadata type %s for which "
-                              "auto-assembly is disabled\n",
+                       pr_err("%s has metadata type %s for which auto-assembly is disabled\n",
                               devname, st->ss->name);
                goto out;
        }
@@ -272,8 +286,7 @@ int Incremental(char *devname, struct context *c,
        /* 4/ Check if array exists.
         */
        if (map_lock(&map))
-               pr_err("failed to get exclusive lock on "
-                       "mapfile\n");
+               pr_err("failed to get exclusive lock on mapfile\n");
        /* Now check we can get O_EXCL.  If not, probably "mdadm -A" has
         * taken over
         */
@@ -335,8 +348,7 @@ int Incremental(char *devname, struct context *c,
                         * So reject it.
                         */
                        ioctl(mdfd, STOP_ARRAY, NULL);
-                       pr_err("You have an old buggy kernel which cannot support\n"
-                              "      --incremental reliably.  Aborting.\n");
+                       pr_err("You have an old buggy kernel which cannot support\n      --incremental reliably.  Aborting.\n");
                        rv = 2;
                        goto out_unlock;
                }
@@ -403,8 +415,7 @@ int Incremental(char *devname, struct context *c,
                        st2 = dup_super(st);
                        if (st2->ss->load_super(st2, dfd2, NULL) ||
                            st->ss->compare_super(st, st2) != 0) {
-                               pr_err("metadata mismatch between %s and "
-                                      "chosen array %s\n",
+                               pr_err("metadata mismatch between %s and chosen array %s\n",
                                       devname, chosen_name);
                                close(dfd2);
                                rv = 2;
@@ -459,6 +470,15 @@ int Incremental(char *devname, struct context *c,
                        info.array.working_disks ++;
 
        }
+       if (strncmp(chosen_name, "/dev/md/", 8) == 0)
+               md_devname = chosen_name+8;
+       else
+               md_devname = chosen_name;
+       if (c->export) {
+               printf("MD_DEVICE=%s\n", fd2devnm(mdfd));
+               printf("MD_DEVNAME=%s\n", md_devname);
+               printf("MD_FOREIGN=%s\n", trustworthy == FOREIGN ? "yes" : "no");
+       }
 
        /* 7/ Is there enough devices to possibly start the array? */
        /* 7a/ if not, finish with success. */
@@ -466,7 +486,7 @@ int Incremental(char *devname, struct context *c,
                char devnm[32];
                /* Try to assemble within the container */
                sysfs_uevent(sra, "change");
-               if (c->verbose >= 0)
+               if (!c->export && c->verbose >= 0)
                        pr_err("container %s now has %d device%s\n",
                               chosen_name, info.array.working_disks,
                               info.array.working_disks == 1?"":"s");
@@ -478,13 +498,8 @@ int Incremental(char *devname, struct context *c,
                close(mdfd);
                sysfs_free(sra);
                if (!rv)
-                       rv = Incremental_container(st, chosen_name, c);
+                       rv = Incremental_container(st, chosen_name, c, NULL);
                map_unlock(&map);
-               if (rv == 1)
-                       /* Don't fail the whole -I if a subarray didn't
-                        * have enough devices to start yet
-                        */
-                       rv = 0;
                /* after spare is added, ping monitor for external metadata
                 * so that it can eg. try to rebuild degraded array */
                if (st->ss->external)
@@ -503,7 +518,9 @@ int Incremental(char *devname, struct context *c,
        if (enough(info.array.level, info.array.raid_disks,
                   info.array.layout, info.array.state & 1,
                   avail) == 0) {
-               if (c->verbose >= 0)
+               if (c->export) {
+                       printf("MD_STARTED=no\n");
+               } else if (c->verbose >= 0)
                        pr_err("%s attached to %s, not enough to start (%d).\n",
                               devname, chosen_name, active_disks);
                rv = 0;
@@ -517,7 +534,9 @@ int Incremental(char *devname, struct context *c,
        /*   + start the array (auto-readonly). */
 
        if (ioctl(mdfd, GET_ARRAY_INFO, &ainf) == 0) {
-               if (c->verbose >= 0)
+               if (c->export) {
+                       printf("MD_STARTED=already\n");
+               } else if (c->verbose >= 0)
                        pr_err("%s attached to %s which is already active.\n",
                               devname, chosen_name);
                rv = 0;
@@ -563,8 +582,14 @@ int Incremental(char *devname, struct context *c,
                else
                        rv = sysfs_set_str(sra, NULL,
                                           "array_state", "read-auto");
+               /* Array might be O_EXCL which  will interfere with
+                * fsck and mount.  So re-open without O_EXCL.
+                */
+               reopen_mddev(mdfd);
                if (rv == 0) {
-                       if (c->verbose >= 0)
+                       if (c->export) {
+                               printf("MD_STARTED=yes\n");
+                       } else if (c->verbose >= 0)
                                pr_err("%s attached to %s, which has been started.\n",
                                       devname, chosen_name);
                        rv = 0;
@@ -587,7 +612,9 @@ int Incremental(char *devname, struct context *c,
                        rv = 1;
                }
        } else {
-               if (c->verbose >= 0)
+               if (c->export) {
+                       printf("MD_STARTED=unsafe\n");
+               } else if (c->verbose >= 0)
                        pr_err("%s attached to %s, not enough to start safely.\n",
                               devname, chosen_name);
                rv = 0;
@@ -831,8 +858,7 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
         */
 
        if (map_lock(&map)) {
-               pr_err("failed to get exclusive lock on "
-                       "mapfile\n");
+               pr_err("failed to get exclusive lock on mapfile\n");
                return 1;
        }
        for (mp = map ; mp ; mp = mp->next) {
@@ -878,8 +904,7 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
                                        sra->text_version);
                        if (!st2) {
                                if (verbose > 1)
-                                       pr_err("not adding %s to %s"
-                                               " as metadata not recognised.\n",
+                                       pr_err("not adding %s to %s as metadata not recognised.\n",
                                                devname, mp->path);
                                goto next;
                        }
@@ -961,8 +986,7 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
                if (domain_test(dl, pol, st2->ss->name) != 1) {
                        /* domain test fails */
                        if (verbose > 1)
-                               pr_err("not adding %s to %s as"
-                                       " it is not in a compatible domain\n",
+                               pr_err("not adding %s to %s as it is not in a compatible domain\n",
                                        devname, mp->path);
 
                        goto next;
@@ -1234,8 +1258,7 @@ static int try_spare(char *devname, int *dfdp, struct dev_policy *pol,
                    !policy_action_allows(pol, st?st->ss->name:NULL,
                                          act_spare_same_slot)) {
                        if (verbose > 1)
-                               pr_err("%s is not bare, so not "
-                                       "considering as a spare\n",
+                               pr_err("%s is not bare, so not considering as a spare\n",
                                        devname);
                        return 1;
                }
@@ -1278,7 +1301,7 @@ static int try_spare(char *devname, int *dfdp, struct dev_policy *pol,
        return rv;
 }
 
-int IncrementalScan(int verbose, char *devnm)
+int IncrementalScan(struct context *c, char *devnm)
 {
        /* look at every device listed in the 'map' file.
         * If one is found that is not running then:
@@ -1290,10 +1313,13 @@ int IncrementalScan(int verbose, char *devnm)
        struct map_ent *me;
        struct mddev_ident *devs, *mddev;
        int rv = 0;
+       char container[32];
+       char *only = NULL;
 
        map_read(&mapl);
        devs = conf_get_ident(NULL);
 
+restart:
        for (me = mapl ; me ; me = me->next) {
                mdu_array_info_t array;
                mdu_bitmap_file_t bmf;
@@ -1302,10 +1328,42 @@ int IncrementalScan(int verbose, char *devnm)
 
                if (devnm && strcmp(devnm, me->devnm) != 0)
                        continue;
+               if (devnm && me->metadata[0] == '/') {
+                       char *sl;
+                       /* member array, need to work on container */
+                       strncpy(container, me->metadata+1, 32);
+                       container[31] = 0;
+                       sl = strchr(container, '/');
+                       if (sl)
+                               *sl = 0;
+                       only = devnm;
+                       devnm = container;
+                       goto restart;
+               }
                mdfd = open_dev(me->devnm);
 
                if (mdfd < 0)
                        continue;
+               if (!isdigit(me->metadata[0])) {
+                       /* must be a container */
+                       struct supertype *st = super_by_fd(mdfd, NULL);
+                       int ret = 0;
+                       struct map_ent *map = NULL;
+                       if (st)
+                               st->ignore_hw_compat = 1;
+                       if (st && st->ss->load_container)
+                               ret = st->ss->load_container(st, mdfd, NULL);
+                       close(mdfd);
+                       if (!ret && st->ss->container_content) {
+                               if (map_lock(&map))
+                                       pr_err("failed to get exclusive lock on mapfile\n");
+                               ret = Incremental_container(st, me->path, c, only);
+                               map_unlock(&map);
+                       }
+                       if (ret)
+                               rv = 1;
+                       continue;
+               }
                if (ioctl(mdfd, GET_ARRAY_INFO, &array) == 0 ||
                    errno != ENODEV) {
                        close(mdfd);
@@ -1330,7 +1388,7 @@ int IncrementalScan(int verbose, char *devnm)
                                        close(bmfd);
                                }
                        }
-                       if (verbose >= 0) {
+                       if (c->verbose >= 0) {
                                if (added == 0)
                                        pr_err("Added bitmap %s to %s\n",
                                               mddev->bitmap_file, me->path);
@@ -1346,7 +1404,7 @@ int IncrementalScan(int verbose, char *devnm)
                if (sra) {
                        if (sysfs_set_str(sra, NULL,
                                          "array_state", "read-auto") == 0) {
-                               if (verbose >= 0)
+                               if (c->verbose >= 0)
                                        pr_err("started array %s\n",
                                               me->path ?: me->devnm);
                        } else {
@@ -1387,7 +1445,7 @@ static char *container2devname(char *devname)
 }
 
 static int Incremental_container(struct supertype *st, char *devname,
-                                struct context *c)
+                                struct context *c, char *only)
 {
        /* Collect the contents of this container and for each
         * array, choose a device name and assemble the array.
@@ -1406,6 +1464,7 @@ static int Incremental_container(struct supertype *st, char *devname,
        int sfd;
        int ra_blocked = 0;
        int ra_all = 0;
+       int result = 0;
 
        st->ss->getinfo_super(st, &info, NULL);
 
@@ -1413,7 +1472,9 @@ static int Incremental_container(struct supertype *st, char *devname,
            info.container_enough > 0)
                /* pass */;
        else {
-               if (c->verbose)
+               if (c->export) {
+                       printf("MD_STARTED=no\n");
+               } else if (c->verbose)
                        pr_err("not enough devices to start the container\n");
                return 0;
        }
@@ -1434,8 +1495,12 @@ static int Incremental_container(struct supertype *st, char *devname,
 
        list = st->ss->container_content(st, NULL);
        /* when nothing to activate - quit */
-       if (list == NULL)
+       if (list == NULL) {
+               if (c->export) {
+                       printf("MD_STARTED=nothing\n");
+               }
                return 0;
+       }
        for (ra = list ; ra ; ra = ra->next) {
                int mdfd;
                char chosen_name[1024];
@@ -1458,7 +1523,7 @@ static int Incremental_container(struct supertype *st, char *devname,
                                strcpy(chosen_name, mp->path);
                        else
                                strcpy(chosen_name, mp->devnm);
-               } else {
+               } else if (!only) {
 
                        /* Check in mdadm.conf for container == devname and
                         * member == ra->text_version after second slash.
@@ -1501,10 +1566,9 @@ static int Incremental_container(struct supertype *st, char *devname,
                        if (match && match->devname &&
                            strcasecmp(match->devname, "<ignore>") == 0) {
                                if (c->verbose > 0)
-                                       pr_err("array %s/%s is "
-                                              "explicitly ignored by mdadm.conf\n",
+                                       pr_err("array %s/%s is explicitly ignored by mdadm.conf\n",
                                               match->container, match->member);
-                               return 2;
+                               continue;
                        }
                        if (match)
                                trustworthy = LOCAL;
@@ -1515,6 +1579,8 @@ static int Incremental_container(struct supertype *st, char *devname,
                                            trustworthy,
                                            chosen_name);
                }
+               if (only && (!mp || strcmp(mp->devnm, only) != 0))
+                       continue;
 
                if (mdfd < 0) {
                        pr_err("failed to open %s: %s.\n",
@@ -1523,9 +1589,30 @@ static int Incremental_container(struct supertype *st, char *devname,
                }
 
                assemble_container_content(st, mdfd, ra, c,
-                                          chosen_name);
+                                          chosen_name, &result);
                close(mdfd);
        }
+       if (c->export && result) {
+               char sep = '=';
+               printf("MD_STARTED");
+               if (result & INCR_NO) {
+                       printf("%cno", sep);
+                       sep = ',';
+               }
+               if (result & INCR_UNSAFE) {
+                       printf("%cunsafe", sep);
+                       sep = ',';
+               }
+               if (result & INCR_ALREADY) {
+                       printf("%calready", sep);
+                       sep = ',';
+               }
+               if (result & INCR_YES) {
+                       printf("%cyes", sep);
+                       sep = ',';
+               }
+               printf("\n");
+       }
 
        /* don't move spares to container with volume being activated
           when all volumes are blocked */
@@ -1612,20 +1699,16 @@ int IncrementalRemove(char *devname, char *id_path, int verbose)
        char buf[32];
 
        if (!id_path)
-               dprintf(Name ": incremental removal without --path <id_path> "
-                       "lacks the possibility to re-add new device in this "
-                       "port\n");
+               dprintf("incremental removal without --path <id_path> lacks the possibility to re-add new device in this port\n");
 
        if (strchr(devname, '/')) {
-               pr_err("incremental removal requires a "
-                       "kernel device name, not a file: %s\n", devname);
+               pr_err("incremental removal requires a kernel device name, not a file: %s\n", devname);
                return 1;
        }
        ent = mdstat_by_component(devname);
        if (!ent) {
                if (verbose >= 0)
-                       pr_err("%s does not appear to be a component "
-                              "of any array\n", devname);
+                       pr_err("%s does not appear to be a component of any array\n", devname);
                return 1;
        }
        sysfs_init(&mdi, -1, ent->devnm);