]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - super-ddf.c
Remove scattered checks for malloc success.
[thirdparty/mdadm.git] / super-ddf.c
index 41f5264e07efdbdd9512421207c40091ec5a014e..1ddf9d1a14a1eb387bef84b123b4cf2360d7cede 100644 (file)
@@ -543,34 +543,32 @@ static int load_ddf_headers(int fd, struct ddf_super *super, char *devname)
 
        if (lseek64(fd, dsize-512, 0) < 0) {
                if (devname)
-                       fprintf(stderr,
-                               Name": Cannot seek to anchor block on %s: %s\n",
-                               devname, strerror(errno));
+                       pr_err("Cannot seek to anchor block on %s: %s\n",
+                              devname, strerror(errno));
                return 1;
        }
        if (read(fd, &super->anchor, 512) != 512) {
                if (devname)
-                       fprintf(stderr,
-                               Name ": Cannot read anchor block on %s: %s\n",
-                               devname, strerror(errno));
+                       pr_err("Cannot read anchor block on %s: %s\n",
+                              devname, strerror(errno));
                return 1;
        }
        if (super->anchor.magic != DDF_HEADER_MAGIC) {
                if (devname)
-                       fprintf(stderr, Name ": no DDF anchor found on %s\n",
+                       pr_err("no DDF anchor found on %s\n",
                                devname);
                return 2;
        }
        if (calc_crc(&super->anchor, 512) != super->anchor.crc) {
                if (devname)
-                       fprintf(stderr, Name ": bad CRC on anchor on %s\n",
+                       pr_err("bad CRC on anchor on %s\n",
                                devname);
                return 2;
        }
        if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 &&
            memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) {
                if (devname)
-                       fprintf(stderr, Name ": can only support super revision"
+                       pr_err("can only support super revision"
                                " %.8s and earlier, not %.8s on %s\n",
                                DDF_REVISION_2, super->anchor.revision,devname);
                return 2;
@@ -579,9 +577,8 @@ static int load_ddf_headers(int fd, struct ddf_super *super, char *devname)
                            dsize >> 9,  1,
                            &super->primary, &super->anchor) == 0) {
                if (devname)
-                       fprintf(stderr,
-                               Name ": Failed to load primary DDF header "
-                               "on %s\n", devname);
+                       pr_err("Failed to load primary DDF header "
+                              "on %s\n", devname);
                return 2;
        }
        super->active = &super->primary;
@@ -652,7 +649,7 @@ static int load_ddf_local(int fd, struct ddf_super *super,
        if (posix_memalign((void**)&dl, 512,
                       sizeof(*dl) +
                       (super->max_part) * sizeof(dl->vlist[0])) != 0) {
-               fprintf(stderr, Name ": %s could not allocate disk info buffer\n",
+               pr_err("%s could not allocate disk info buffer\n",
                        __func__);
                return 1;
        }
@@ -661,7 +658,7 @@ static int load_ddf_local(int fd, struct ddf_super *super,
                     super->active->data_section_offset,
                     super->active->data_section_length,
                     0);
-       dl->devname = devname ? strdup(devname) : NULL;
+       dl->devname = devname ? xstrdup(devname) : NULL;
 
        fstat(fd, &stb);
        dl->major = major(stb.st_rdev);
@@ -706,9 +703,8 @@ static int load_ddf_local(int fd, struct ddf_super *super,
                                continue;
                        if (posix_memalign((void**)&dl->spare, 512,
                                       super->conf_rec_len*512) != 0) {
-                               fprintf(stderr, Name
-                                       ": %s could not allocate spare info buf\n",
-                                       __func__);
+                               pr_err("%s could not allocate spare info buf\n",
+                                      __func__);
                                return 1;
                        }
                                
@@ -732,9 +728,8 @@ static int load_ddf_local(int fd, struct ddf_super *super,
                        if (posix_memalign((void**)&vcl, 512,
                                       (super->conf_rec_len*512 +
                                        offsetof(struct vcl, conf))) != 0) {
-                               fprintf(stderr, Name
-                                       ": %s could not allocate vcl buf\n",
-                                       __func__);
+                               pr_err("%s could not allocate vcl buf\n",
+                                      __func__);
                                return 1;
                        }
                        vcl->next = super->conflist;
@@ -782,25 +777,23 @@ static int load_super_ddf(struct supertype *st, int fd,
        /* 32M is a lower bound */
        if (dsize <= 32*1024*1024) {
                if (devname)
-                       fprintf(stderr,
-                               Name ": %s is too small for ddf: "
-                               "size is %llu sectors.\n",
-                               devname, dsize>>9);
+                       pr_err("%s is too small for ddf: "
+                              "size is %llu sectors.\n",
+                              devname, dsize>>9);
                return 1;
        }
        if (dsize & 511) {
                if (devname)
-                       fprintf(stderr,
-                               Name ": %s is an odd size for ddf: "
-                               "size is %llu bytes.\n",
-                               devname, dsize);
+                       pr_err("%s is an odd size for ddf: "
+                              "size is %llu bytes.\n",
+                              devname, dsize);
                return 1;
        }
 
        free_super_ddf(st);
 
        if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) {
-               fprintf(stderr, Name ": malloc of %zu failed.\n",
+               pr_err("malloc of %zu failed.\n",
                        sizeof(*super));
                return 1;
        }
@@ -818,9 +811,8 @@ static int load_super_ddf(struct supertype *st, int fd,
 
        if (rv) {
                if (devname)
-                       fprintf(stderr,
-                               Name ": Failed to load all information "
-                               "sections on %s\n", devname);
+                       pr_err("Failed to load all information "
+                              "sections on %s\n", devname);
                free(super);
                return rv;
        }
@@ -829,9 +821,8 @@ static int load_super_ddf(struct supertype *st, int fd,
 
        if (rv) {
                if (devname)
-                       fprintf(stderr,
-                               Name ": Failed to load all information "
-                               "sections on %s\n", devname);
+                       pr_err("Failed to load all information "
+                              "sections on %s\n", devname);
                free(super);
                return rv;
        }
@@ -871,6 +862,15 @@ static void free_super_ddf(struct supertype *st)
                        free(d->spare);
                free(d);
        }
+       while (ddf->add_list) {
+               struct dl *d = ddf->add_list;
+               ddf->add_list = d->next;
+               if (d->fd >= 0)
+                       close(d->fd);
+               if (d->spare)
+                       free(d->spare);
+               free(d);
+       }
        free(ddf);
        st->sb = NULL;
 }
@@ -884,8 +884,7 @@ static struct supertype *match_metadata_desc_ddf(char *arg)
                )
                return NULL;
 
-       st = malloc(sizeof(*st));
-       memset(st, 0, sizeof(*st));
+       st = xcalloc(1, sizeof(*st));
        st->container_dev = NoMdDev;
        st->ss = &super_ddf;
        st->max_devs = 512;
@@ -1130,6 +1129,9 @@ static void examine_pds(struct ddf_super *sb)
                       (type&8) ? "spare" : "",
                       (type&16)? ", foreign" : "",
                       (type&32)? "pass-through" : "");
+               if (state & DDF_Failed)
+                       /* This over-rides these three */
+                       state &= ~(DDF_Online|DDF_Rebuilding|DDF_Transition);
                printf("/%s%s%s%s%s%s%s",
                       (state&1)? "Online": "Offline",
                       (state&2)? ", Failed": "",
@@ -1324,18 +1326,21 @@ static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *m
 {
        struct ddf_super *ddf = st->sb;
        int map_disks = info->array.raid_disks;
+       __u32 *cptr;
 
        if (ddf->currentconf) {
                getinfo_super_ddf_bvd(st, info, map);
                return;
        }
+       memset(info, 0, sizeof(*info));
 
        info->array.raid_disks    = __be16_to_cpu(ddf->phys->used_pdes);
        info->array.level         = LEVEL_CONTAINER;
        info->array.layout        = 0;
        info->array.md_minor      = -1;
-       info->array.ctime         = DECADE + __be32_to_cpu(*(__u32*)
-                                                        (ddf->anchor.guid+16));
+       cptr = (__u32 *)(ddf->anchor.guid + 16);
+       info->array.ctime         = DECADE + __be32_to_cpu(*cptr);
+
        info->array.utime         = 0;
        info->array.chunk_size    = 0;
        info->container_enough    = 1;
@@ -1361,6 +1366,7 @@ static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info, char *m
 
        info->recovery_start = MaxSector;
        info->reshape_active = 0;
+       info->recovery_blocked = 0;
        info->name[0] = 0;
 
        info->array.major_version = -1;
@@ -1393,7 +1399,9 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, cha
        int j;
        struct dl *dl;
        int map_disks = info->array.raid_disks;
+       __u32 *cptr;
 
+       memset(info, 0, sizeof(*info));
        /* FIXME this returns BVD info - what if we want SVD ?? */
 
        info->array.raid_disks    = __be16_to_cpu(vc->conf.prim_elmnt_count);
@@ -1401,8 +1409,8 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, cha
        info->array.layout        = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
                                                  info->array.raid_disks);
        info->array.md_minor      = -1;
-       info->array.ctime         = DECADE +
-               __be32_to_cpu(*(__u32*)(vc->conf.guid+16));
+       cptr = (__u32 *)(vc->conf.guid + 16);
+       info->array.ctime         = DECADE + __be32_to_cpu(*cptr);
        info->array.utime         = DECADE + __be32_to_cpu(vc->conf.timestamp);
        info->array.chunk_size    = 512 << vc->conf.chunk_shift;
        info->custom_array_size   = 0;
@@ -1416,23 +1424,26 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, cha
        }
 
        for (dl = ddf->dlist; dl ; dl = dl->next)
-               if (dl->raiddisk == info->disk.raid_disk)
+               if (dl->raiddisk == ddf->currentdev)
                        break;
+
        info->disk.major = 0;
        info->disk.minor = 0;
+       info->disk.state = 0;
        if (dl) {
                info->disk.major = dl->major;
                info->disk.minor = dl->minor;
+               info->disk.raid_disk = dl->raiddisk;
+               info->disk.number = dl->pdnum;
+               info->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
        }
-//     info->disk.number = __be32_to_cpu(ddf->disk.refnum);
-//     info->disk.raid_disk = find refnum in the table and use index;
-//     info->disk.state = ???;
 
        info->container_member = ddf->currentconf->vcnum;
 
        info->recovery_start = MaxSector;
        info->resync_start = 0;
        info->reshape_active = 0;
+       info->recovery_blocked = 0;
        if (!(ddf->virt->entries[info->container_member].state
              & DDF_state_inconsistent)  &&
            (ddf->virt->entries[info->container_member].init_state
@@ -1608,7 +1619,7 @@ static int init_super_ddf(struct supertype *st,
                return init_super_ddf_bvd(st, info, size, name, homehost, uuid);
 
        if (posix_memalign((void**)&ddf, 512, sizeof(*ddf)) != 0) {
-               fprintf(stderr, Name ": %s could not allocate superblock\n", __func__);
+               pr_err("%s could not allocate superblock\n", __func__);
                return 0;
        }
        memset(ddf, 0, sizeof(*ddf));
@@ -1746,7 +1757,7 @@ static int init_super_ddf(struct supertype *st,
                strcpy((char*)ddf->controller.vendor_data, homehost);
 
        if (posix_memalign((void**)&pd, 512, pdsize) != 0) {
-               fprintf(stderr, Name ": %s could not allocate pd\n", __func__);
+               pr_err("%s could not allocate pd\n", __func__);
                return 0;
        }
        ddf->phys = pd;
@@ -1760,7 +1771,7 @@ static int init_super_ddf(struct supertype *st,
        memset(pd->pad, 0xff, 52);
 
        if (posix_memalign((void**)&vd, 512, vdsize) != 0) {
-               fprintf(stderr, Name ": %s could not allocate vd\n", __func__);
+               pr_err("%s could not allocate vd\n", __func__);
                return 0;
        }
        ddf->virt = vd;
@@ -1906,9 +1917,7 @@ FIXME ignore DDF_Legacy devices?
        int n = 0;
        unsigned int i, j;
 
-       rv = malloc(sizeof(struct extent) * (ddf->max_part + 2));
-       if (!rv)
-               return NULL;
+       rv = xmalloc(sizeof(struct extent) * (ddf->max_part + 2));
 
        for (i = 0; i < ddf->max_part; i++) {
                struct vcl *v = dl->vlist[i];
@@ -1949,9 +1958,9 @@ static int init_super_ddf_bvd(struct supertype *st,
 
        if (__be16_to_cpu(ddf->virt->populated_vdes)
            >= __be16_to_cpu(ddf->virt->max_vdes)) {
-               fprintf(stderr, Name": This ddf already has the "
-                       "maximum of %d virtual devices\n",
-                       __be16_to_cpu(ddf->virt->max_vdes));
+               pr_err("This ddf already has the "
+                      "maximum of %d virtual devices\n",
+                      __be16_to_cpu(ddf->virt->max_vdes));
                return 0;
        }
 
@@ -1961,9 +1970,9 @@ static int init_super_ddf_bvd(struct supertype *st,
                                char *n = ddf->virt->entries[venum].name;
 
                                if (strncmp(name, n, 16) == 0) {
-                                       fprintf(stderr, Name ": This ddf already"
-                                               " has an array called %s\n",
-                                               name);
+                                       pr_err("This ddf already"
+                                              " has an array called %s\n",
+                                              name);
                                        return 0;
                                }
                        }
@@ -1972,7 +1981,7 @@ static int init_super_ddf_bvd(struct supertype *st,
                if (all_ff(ddf->virt->entries[venum].guid))
                        break;
        if (venum == __be16_to_cpu(ddf->virt->max_vdes)) {
-               fprintf(stderr, Name ": Cannot find spare slot for "
+               pr_err("Cannot find spare slot for "
                        "virtual disk - DDF is corrupt\n");
                return 0;
        }
@@ -2002,7 +2011,7 @@ static int init_super_ddf_bvd(struct supertype *st,
        /* Now create a new vd_config */
        if (posix_memalign((void**)&vcl, 512,
                           (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512)) != 0) {
-               fprintf(stderr, Name ": %s could not allocate vd_config\n", __func__);
+               pr_err("%s could not allocate vd_config\n", __func__);
                return 0;
        }
        vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe];
@@ -2174,6 +2183,7 @@ static int add_to_super_ddf(struct supertype *st,
        struct phys_disk_entry *pde;
        unsigned int n, i;
        struct stat stb;
+       __u32 *tptr;
 
        if (ddf->currentconf) {
                add_to_super_ddf_bvd(st, dk, fd, devname);
@@ -2186,9 +2196,8 @@ static int add_to_super_ddf(struct supertype *st,
        fstat(fd, &stb);
        if (posix_memalign((void**)&dd, 512,
                           sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part) != 0) {
-               fprintf(stderr, Name
-                       ": %s could allocate buffer for new disk, aborting\n",
-                       __func__);
+               pr_err("%s could allocate buffer for new disk, aborting\n",
+                      __func__);
                return 1;
        }
        dd->major = major(stb.st_rdev);
@@ -2202,8 +2211,9 @@ static int add_to_super_ddf(struct supertype *st,
        tm = localtime(&now);
        sprintf(dd->disk.guid, "%8s%04d%02d%02d",
                T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
-       *(__u32*)(dd->disk.guid + 16) = random32();
-       *(__u32*)(dd->disk.guid + 20) = random32();
+       tptr = (__u32 *)(dd->disk.guid + 16);
+       *tptr++ = random32();
+       *tptr = random32();
 
        do {
                /* Cannot be bothered finding a CRC of some irrelevant details*/
@@ -2231,7 +2241,7 @@ static int add_to_super_ddf(struct supertype *st,
                           sizeof(struct phys_disk_entry));
                struct phys_disk *pd;
 
-               pd = malloc(len);
+               pd = xmalloc(len);
                pd->magic = DDF_PHYS_RECORDS_MAGIC;
                pd->used_pdes = __cpu_to_be16(n);
                pde = &pd->entries[0];
@@ -2264,13 +2274,46 @@ static int add_to_super_ddf(struct supertype *st,
        return 0;
 }
 
+static int remove_from_super_ddf(struct supertype *st, mdu_disk_info_t *dk)
+{
+       struct ddf_super *ddf = st->sb;
+       struct dl *dl;
+
+       /* mdmon has noticed that this disk (dk->major/dk->minor) has
+        * disappeared from the container.
+        * We need to arrange that it disappears from the metadata and
+        * internal data structures too.
+        * Most of the work is done by ddf_process_update which edits
+        * the metadata and closes the file handle and attaches the memory
+        * where free_updates will free it.
+        */
+       for (dl = ddf->dlist; dl ; dl = dl->next)
+               if (dl->major == dk->major &&
+                   dl->minor == dk->minor)
+                       break;
+       if (!dl)
+               return -1;
+
+       if (st->update_tail) {
+               int len = (sizeof(struct phys_disk) +
+                          sizeof(struct phys_disk_entry));
+               struct phys_disk *pd;
+
+               pd = xmalloc(len);
+               pd->magic = DDF_PHYS_RECORDS_MAGIC;
+               pd->used_pdes = __cpu_to_be16(dl->pdnum);
+               pd->entries[0].state = __cpu_to_be16(DDF_Missing);
+               append_metadata_update(st, pd, len);
+       }
+       return 0;
+}
+
 /*
  * This is the write_init_super method for a ddf container.  It is
  * called when creating a container or adding another device to a
  * container.
  */
-
-static unsigned char null_conf[4096+512];
+#define NULL_CONF_SZ   4096
 
 static int __write_init_super_ddf(struct supertype *st)
 {
@@ -2283,6 +2326,12 @@ static int __write_init_super_ddf(struct supertype *st)
        int attempts = 0;
        int successes = 0;
        unsigned long long size, sector;
+       char *null_aligned;
+
+       if (posix_memalign((void**)&null_aligned, 4096, NULL_CONF_SZ) != 0) {
+               return -ENOMEM;
+       }
+       memset(null_aligned, 0xff, NULL_CONF_SZ);
 
        /* try to write updated metadata,
         * if we catch a failure move on to the next disk
@@ -2352,14 +2401,11 @@ static int __write_init_super_ddf(struct supertype *st)
                                if (write(fd, &c->conf, conf_size) < 0)
                                        break;
                        } else {
-                               char *null_aligned = (char*)((((unsigned long)null_conf)+511)&~511UL);
-                               if (null_conf[0] != 0xff)
-                                       memset(null_conf, 0xff, sizeof(null_conf));
                                unsigned int togo = conf_size;
-                               while (togo > sizeof(null_conf)-512) {
-                                       if (write(fd, null_aligned, sizeof(null_conf)-512) < 0)
+                               while (togo > NULL_CONF_SZ) {
+                                       if (write(fd, null_aligned, NULL_CONF_SZ) < 0)
                                                break;
-                                       togo -= sizeof(null_conf)-512;
+                                       togo -= NULL_CONF_SZ;
                                }
                                if (write(fd, null_aligned, togo) < 0)
                                        break;
@@ -2378,6 +2424,7 @@ static int __write_init_super_ddf(struct supertype *st)
                        continue;
                successes++;
        }
+       free(null_aligned);
 
        return attempts != successes;
 }
@@ -2413,7 +2460,7 @@ static int write_init_super_ddf(struct supertype *st)
 
                /* First the virtual disk.  We have a slightly fake header */
                len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
-               vd = malloc(len);
+               vd = xmalloc(len);
                *vd = *ddf->virt;
                vd->entries[0] = ddf->virt->entries[currentconf->vcnum];
                vd->populated_vdes = __cpu_to_be16(currentconf->vcnum);
@@ -2421,7 +2468,7 @@ static int write_init_super_ddf(struct supertype *st)
 
                /* Then the vd_config */
                len = ddf->conf_rec_len * 512;
-               vc = malloc(len);
+               vc = xmalloc(len);
                memcpy(vc, &currentconf->conf, len);
                append_metadata_update(st, vc, len);
 
@@ -2494,7 +2541,7 @@ static int reserve_space(struct supertype *st, int raiddisks,
                free(e);
        }
        if (cnt < raiddisks) {
-               fprintf(stderr, Name ": not enough devices with space to create array.\n");
+               pr_err("not enough devices with space to create array.\n");
                return 0; /* No enough free spaces large enough */
        }
        if (size == 0) {
@@ -2505,7 +2552,7 @@ static int reserve_space(struct supertype *st, int raiddisks,
                                continue;
                        /* This is bigger than 'size', see if there are enough */
                        cnt = 0;
-                       for (dl2 = dl; dl2 ; dl2=dl2->next)
+                       for (dl2 = ddf->dlist; dl2 ; dl2=dl2->next)
                                if (dl2->esize >= dl->esize)
                                        cnt++;
                        if (cnt >= raiddisks)
@@ -2517,7 +2564,7 @@ static int reserve_space(struct supertype *st, int raiddisks,
                }
                *freesize = size;
                if (size < 32) {
-                       fprintf(stderr, Name ": not enough spare devices to create array.\n");
+                       pr_err("not enough spare devices to create array.\n");
                        return 0;
                }
        }
@@ -2586,7 +2633,7 @@ static int validate_geometry_ddf(struct supertype *st,
                                break;
                if (ddf_level_num[i].num1 == MAXINT) {
                        if (verbose)
-                               fprintf(stderr, Name ": DDF does not support level %d arrays\n",
+                               pr_err("DDF does not support level %d arrays\n",
                                        level);
                        return 0;
                }
@@ -2635,15 +2682,14 @@ static int validate_geometry_ddf(struct supertype *st,
                }
 
                if (verbose)
-                       fprintf(stderr,
-                               Name ": ddf: Cannot create this array "
-                               "on device %s - a container is required.\n",
-                               dev);
+                       pr_err("ddf: Cannot create this array "
+                              "on device %s - a container is required.\n",
+                              dev);
                return 0;
        }
        if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
                if (verbose)
-                       fprintf(stderr, Name ": ddf: Cannot open %s: %s\n",
+                       pr_err("ddf: Cannot open %s: %s\n",
                                dev, strerror(errno));
                return 0;
        }
@@ -2652,7 +2698,7 @@ static int validate_geometry_ddf(struct supertype *st,
        if (cfd < 0) {
                close(fd);
                if (verbose)
-                       fprintf(stderr, Name ": ddf: Cannot use %s: %s\n",
+                       pr_err("ddf: Cannot use %s: %s\n",
                                dev, strerror(EBUSY));
                return 0;
        }
@@ -2698,7 +2744,7 @@ validate_geometry_ddf_container(struct supertype *st,
        fd = open(dev, O_RDONLY|O_EXCL, 0);
        if (fd < 0) {
                if (verbose)
-                       fprintf(stderr, Name ": ddf: Cannot open %s: %s\n",
+                       pr_err("ddf: Cannot open %s: %s\n",
                                dev, strerror(errno));
                return 0;
        }
@@ -2731,7 +2777,7 @@ static int validate_geometry_ddf_bvd(struct supertype *st,
        /* ddf/bvd supports lots of things, but not containers */
        if (level == LEVEL_CONTAINER) {
                if (verbose)
-                       fprintf(stderr, Name ": DDF cannot create a container within an container\n");
+                       pr_err("DDF cannot create a container within an container\n");
                return 0;
        }
        /* We must have the container info already read in. */
@@ -2768,10 +2814,9 @@ static int validate_geometry_ddf_bvd(struct supertype *st,
                }
                if (dcnt < raiddisks) {
                        if (verbose)
-                               fprintf(stderr,
-                                       Name ": ddf: Not enough devices with "
-                                       "space for this array (%d < %d)\n",
-                                       dcnt, raiddisks);
+                               pr_err("ddf: Not enough devices with "
+                                      "space for this array (%d < %d)\n",
+                                      dcnt, raiddisks);
                        return 0;
                }
                return 1;
@@ -2788,7 +2833,7 @@ static int validate_geometry_ddf_bvd(struct supertype *st,
        }
        if (!dl) {
                if (verbose)
-                       fprintf(stderr, Name ": ddf: %s is not in the "
+                       pr_err("ddf: %s is not in the "
                                "same DDF set\n",
                                dev);
                return 0;
@@ -2915,14 +2960,14 @@ static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray
                unsigned int j;
                struct mdinfo *this;
                char *ep;
+               __u32 *cptr;
 
                if (subarray &&
                    (strtoul(subarray, &ep, 10) != vc->vcnum ||
                     *ep != '\0'))
                        continue;
 
-               this = malloc(sizeof(*this));
-               memset(this, 0, sizeof(*this));
+               this = xcalloc(1, sizeof(*this));
                this->next = rest;
                rest = this;
 
@@ -2934,8 +2979,8 @@ static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray
                this->array.md_minor      = -1;
                this->array.major_version = -1;
                this->array.minor_version = -2;
-               this->array.ctime         = DECADE +
-                       __be32_to_cpu(*(__u32*)(vc->conf.guid+16));
+               cptr = (__u32 *)(vc->conf.guid + 16);
+               this->array.ctime         = DECADE + __be32_to_cpu(*cptr);
                this->array.utime         = DECADE +
                        __be32_to_cpu(vc->conf.timestamp);
                this->array.chunk_size    = 512 << vc->conf.chunk_shift;
@@ -2973,25 +3018,34 @@ static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray
                        struct mdinfo *dev;
                        struct dl *d;
                        int stt;
+                       int pd;
 
                        if (vc->conf.phys_refnum[i] == 0xFFFFFFFF)
                                continue;
 
-                       for (d = ddf->dlist; d ; d=d->next)
-                               if (d->disk.refnum == vc->conf.phys_refnum[i])
+                       for (pd = __be16_to_cpu(ddf->phys->used_pdes);
+                            pd--;)
+                               if (ddf->phys->entries[pd].refnum
+                                   == vc->conf.phys_refnum[i])
                                        break;
-                       if (d == NULL)
-                               /* Haven't found that one yet, maybe there are others */
+                       if (pd < 0)
                                continue;
-                       stt = __be16_to_cpu(ddf->phys->entries[d->pdnum].state);
+
+                       stt = __be16_to_cpu(ddf->phys->entries[pd].state);
                        if ((stt & (DDF_Online|DDF_Failed|DDF_Rebuilding))
                            != DDF_Online)
                                continue;
 
                        this->array.working_disks++;
 
-                       dev = malloc(sizeof(*dev));
-                       memset(dev, 0, sizeof(*dev));
+                       for (d = ddf->dlist; d ; d=d->next)
+                               if (d->disk.refnum == vc->conf.phys_refnum[i])
+                                       break;
+                       if (d == NULL)
+                               /* Haven't found that one yet, maybe there are others */
+                               continue;
+
+                       dev = xcalloc(1, sizeof(*dev));
                        dev->next = this->devs;
                        this->devs = dev;
 
@@ -3125,6 +3179,9 @@ static int ddf_set_array_state(struct active_array *a, int consistent)
        return consistent;
 }
 
+#define container_of(ptr, type, member) ({                      \
+        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+        (type *)( (char *)__mptr - offsetof(type,member) );})
 /*
  * The state of each disk is stored in the global phys_disk structure
  * in phys_disk.entries[n].state.
@@ -3146,20 +3203,43 @@ static void ddf_set_disk(struct active_array *a, int n, int state)
        struct vd_config *vc = find_vdcr(ddf, inst);
        int pd = find_phys(ddf, vc->phys_refnum[n]);
        int i, st, working;
+       struct mdinfo *mdi;
+       struct dl *dl;
 
        if (vc == NULL) {
                dprintf("ddf: cannot find instance %d!!\n", inst);
                return;
        }
-       if (pd < 0) {
-               /* disk doesn't currently exist. If it is now in_sync,
-                * insert it. */
+       /* Find the matching slot in 'info'. */
+       for (mdi = a->info.devs; mdi; mdi = mdi->next)
+               if (mdi->disk.raid_disk == n)
+                       break;
+       if (!mdi)
+               return;
+
+       /* and find the 'dl' entry corresponding to that. */
+       for (dl = ddf->dlist; dl; dl = dl->next)
+               if (mdi->state_fd >= 0 &&
+                   mdi->disk.major == dl->major &&
+                   mdi->disk.minor == dl->minor)
+                       break;
+       if (!dl)
+               return;
+
+       if (pd < 0 || pd != dl->pdnum) {
+               /* disk doesn't currently exist or has changed.
+                * If it is now in_sync, insert it. */
                if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) {
-                       /* Find dev 'n' in a->info->devs, determine the
-                        * ddf refnum, and set vc->phys_refnum and update
-                        * phys->entries[]
-                        */
-                       /* FIXME */
+                       struct vcl *vcl;
+                       pd = dl->pdnum;
+                       vc->phys_refnum[n] = dl->disk.refnum;
+                       vcl = container_of(vc, struct vcl, conf);
+                       vcl->lba_offset[n] = mdi->data_offset;
+                       ddf->phys->entries[pd].type &=
+                               ~__cpu_to_be16(DDF_Global_Spare);
+                       ddf->phys->entries[pd].type |=
+                               __cpu_to_be16(DDF_Active_in_VD);
+                       ddf->updates_pending = 1;
                }
        } else {
                int old = ddf->phys->entries[pd].state;
@@ -3202,6 +3282,8 @@ static void ddf_set_disk(struct active_array *a, int n, int state)
        case DDF_RAID1:
                if (working == 0)
                        state = DDF_state_failed;
+               else if (working == 2 && state == DDF_state_degraded)
+                       state = DDF_state_part_optimal;
                break;
        case DDF_RAID4:
        case DDF_RAID5:
@@ -3254,8 +3336,8 @@ static void ddf_process_update(struct supertype *st,
         * our actions.
         * Possible update are:
         *  DDF_PHYS_RECORDS_MAGIC
-        *    Add a new physical device.  Changes to this record
-        *    only happen implicitly.
+        *    Add a new physical device or remove an old one.
+        *    Changes to this record only happen implicitly.
         *    used_pdes is the device number.
         *  DDF_VIRT_RECORDS_MAGIC
         *    Add a new VD.  Possibly also change the 'access' bits.
@@ -3285,6 +3367,7 @@ static void ddf_process_update(struct supertype *st,
        struct dl *dl;
        unsigned int mppe;
        unsigned int ent;
+       unsigned int pdnum, pd2;
 
        dprintf("Process update %x\n", *magic);
 
@@ -3299,6 +3382,25 @@ static void ddf_process_update(struct supertype *st,
                ent = __be16_to_cpu(pd->used_pdes);
                if (ent >= __be16_to_cpu(ddf->phys->max_pdes))
                        return;
+               if (pd->entries[0].state & __cpu_to_be16(DDF_Missing)) {
+                       struct dl **dlp;
+                       /* removing this disk. */
+                       ddf->phys->entries[ent].state |= __cpu_to_be16(DDF_Missing);
+                       for (dlp = &ddf->dlist; *dlp; dlp = &(*dlp)->next) {
+                               struct dl *dl = *dlp;
+                               if (dl->pdnum == (signed)ent) {
+                                       close(dl->fd);
+                                       dl->fd = -1;
+                                       /* FIXME this doesn't free
+                                        * dl->devname */
+                                       update->space = dl;
+                                       *dlp = dl->next;
+                                       break;
+                               }
+                       }
+                       ddf->updates_pending = 1;
+                       return;
+               }
                if (!all_ff(ddf->phys->entries[ent].guid))
                        return;
                ddf->phys->entries[ent] = pd->entries[0];
@@ -3366,19 +3468,48 @@ static void ddf_process_update(struct supertype *st,
                        memcpy(&vcl->conf, vc, update->len);
                        vcl->lba_offset = (__u64*)
                                &vcl->conf.phys_refnum[mppe];
+                       for (ent = 0;
+                            ent < __be16_to_cpu(ddf->virt->populated_vdes);
+                            ent++)
+                               if (memcmp(vc->guid, ddf->virt->entries[ent].guid,
+                                          DDF_GUID_LEN) == 0) {
+                                       vcl->vcnum = ent;
+                                       break;
+                               }
                        ddf->conflist = vcl;
                }
+               /* Set DDF_Transition on all Failed devices - to help
+                * us detect those that are no longer in use
+                */
+               for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++)
+                       if (ddf->phys->entries[pdnum].state
+                           & __be16_to_cpu(DDF_Failed))
+                               ddf->phys->entries[pdnum].state
+                                       |= __be16_to_cpu(DDF_Transition);
                /* Now make sure vlist is correct for each dl. */
                for (dl = ddf->dlist; dl; dl = dl->next) {
                        unsigned int dn;
                        unsigned int vn = 0;
+                       int in_degraded = 0;
                        for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
                                for (dn=0; dn < ddf->mppe ; dn++)
                                        if (vcl->conf.phys_refnum[dn] ==
                                            dl->disk.refnum) {
+                                               int vstate;
                                                dprintf("dev %d has %p at %d\n",
                                                        dl->pdnum, vcl, vn);
+                                               /* Clear the Transition flag */
+                                               if (ddf->phys->entries[dl->pdnum].state
+                                                   & __be16_to_cpu(DDF_Failed))
+                                                       ddf->phys->entries[dl->pdnum].state &=
+                                                               ~__be16_to_cpu(DDF_Transition);
+
                                                dl->vlist[vn++] = vcl;
+                                               vstate = ddf->virt->entries[vcl->vcnum].state
+                                                       & DDF_state_mask;
+                                               if (vstate == DDF_state_degraded ||
+                                                   vstate == DDF_state_part_optimal)
+                                                       in_degraded = 1;
                                                break;
                                        }
                        while (vn < ddf->max_part)
@@ -3386,8 +3517,14 @@ static void ddf_process_update(struct supertype *st,
                        if (dl->vlist[0]) {
                                ddf->phys->entries[dl->pdnum].type &=
                                        ~__cpu_to_be16(DDF_Global_Spare);
-                               ddf->phys->entries[dl->pdnum].type |=
-                                       __cpu_to_be16(DDF_Active_in_VD);
+                               if (!(ddf->phys->entries[dl->pdnum].type &
+                                     __cpu_to_be16(DDF_Active_in_VD))) {
+                                           ddf->phys->entries[dl->pdnum].type |=
+                                                   __cpu_to_be16(DDF_Active_in_VD);
+                                           if (in_degraded)
+                                                   ddf->phys->entries[dl->pdnum].state |=
+                                                           __cpu_to_be16(DDF_Rebuilding);
+                                   }
                        }
                        if (dl->spare) {
                                ddf->phys->entries[dl->pdnum].type &=
@@ -3403,6 +3540,33 @@ static void ddf_process_update(struct supertype *st,
                                                       DDF_Active_in_VD);
                        }
                }
+
+               /* Now remove any 'Failed' devices that are not part
+                * of any VD.  They will have the Transition flag set.
+                * Once done, we need to update all dl->pdnum numbers.
+                */
+               pd2 = 0;
+               for (pdnum = 0; pdnum < __be16_to_cpu(ddf->phys->used_pdes); pdnum++)
+                       if ((ddf->phys->entries[pdnum].state
+                            & __be16_to_cpu(DDF_Failed))
+                           && (ddf->phys->entries[pdnum].state
+                               & __be16_to_cpu(DDF_Transition)))
+                               /* skip this one */;
+                       else if (pdnum == pd2)
+                               pd2++;
+                       else {
+                               ddf->phys->entries[pd2] = ddf->phys->entries[pdnum];
+                               for (dl = ddf->dlist; dl; dl = dl->next)
+                                       if (dl->pdnum == (int)pdnum)
+                                               dl->pdnum = pd2;
+                               pd2++;
+                       }
+               ddf->phys->used_pdes = __cpu_to_be16(pd2);
+               while (pd2 < pdnum) {
+                       memset(ddf->phys->entries[pd2].guid, 0xff, DDF_GUID_LEN);
+                       pd2++;
+               }
+
                ddf->updates_pending = 1;
                break;
        case DDF_SPARE_ASSIGN_MAGIC:
@@ -3509,7 +3673,8 @@ static struct mdinfo *ddf_activate_spare(struct active_array *a,
                        unsigned int j;
                        /* If in this array, skip */
                        for (d2 = a->info.devs ; d2 ; d2 = d2->next)
-                               if (d2->disk.major == dl->major &&
+                               if (d2->state_fd >= 0 &&
+                                   d2->disk.major == dl->major &&
                                    d2->disk.minor == dl->minor) {
                                        dprintf("%x:%x already in array\n", dl->major, dl->minor);
                                        break;
@@ -3558,23 +3723,21 @@ static struct mdinfo *ddf_activate_spare(struct active_array *a,
                                esize = ex[j].start - pos;
                                if (esize >= a->info.component_size)
                                        break;
-                               pos = ex[i].start + ex[i].size;
-                               i++;
-                       } while (ex[i-1].size);
+                               pos = ex[j].start + ex[j].size;
+                               j++;
+                       } while (ex[j-1].size);
 
                        free(ex);
                        if (esize < a->info.component_size) {
-                               dprintf("%x:%x has no room: %llu %llu\n", dl->major, dl->minor,
+                               dprintf("%x:%x has no room: %llu %llu\n",
+                                       dl->major, dl->minor,
                                        esize, a->info.component_size);
                                /* No room */
                                continue;
                        }
 
                        /* Cool, we have a device with some space at pos */
-                       di = malloc(sizeof(*di));
-                       if (!di)
-                               continue;
-                       memset(di, 0, sizeof(*di));
+                       di = xcalloc(1, sizeof(*di));
                        di->disk.number = i;
                        di->disk.raid_disk = i;
                        di->disk.major = dl->major;
@@ -3606,23 +3769,15 @@ static struct mdinfo *ddf_activate_spare(struct active_array *a,
         * Create a metadata_update record to update the
         * phys_refnum and lba_offset values
         */
-       mu = malloc(sizeof(*mu));
-       if (mu && posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) {
+       mu = xmalloc(sizeof(*mu));
+       if (posix_memalign(&mu->space, 512, sizeof(struct vcl)) != 0) {
                free(mu);
                mu = NULL;
        }
-       if (!mu) {
-               while (rv) {
-                       struct mdinfo *n = rv->next;
-
-                       free(rv);
-                       rv = n;
-               }
-               return NULL;
-       }
-               
-       mu->buf = malloc(ddf->conf_rec_len * 512);
-       mu->len = ddf->conf_rec_len;
+       mu->buf = xmalloc(ddf->conf_rec_len * 512);
+       mu->len = ddf->conf_rec_len * 512;
+       mu->space = NULL;
+       mu->space_list = NULL;
        mu->next = *updates;
        vc = find_vdcr(ddf, a->info.container_member);
        memcpy(mu->buf, vc, ddf->conf_rec_len * 512);
@@ -3676,6 +3831,7 @@ struct superswitch super_ddf = {
        .validate_geometry = validate_geometry_ddf,
        .write_init_super = write_init_super_ddf,
        .add_to_super   = add_to_super_ddf,
+       .remove_from_super = remove_from_super_ddf,
        .load_container = load_container_ddf,
 #endif
        .match_home     = match_home_ddf,