]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - super-ddf.c
Use uuid as /dev name when assembling array of uncertain origin.
[thirdparty/mdadm.git] / super-ddf.c
index 5d38750489193302e6a4bcd0e56809ccdc29957b..77ce46fd37de83faff1f329ad45dfd1d58f438e3 100644 (file)
@@ -426,8 +426,9 @@ struct ddf_super {
                        };
                };
                struct disk_data disk;
+               void *mdupdate; /* hold metadata update */
                struct vcl *vlist[0]; /* max_part in size */
-       } *dlist;
+       } *dlist, *add_list;
 };
 
 #ifndef offsetof
@@ -813,6 +814,7 @@ static int load_super_ddf(struct supertype *st, int fd,
                st->minor_version = 0;
                st->max_devs = 512;
        }
+       st->loaded_container = 0;
        return 0;
 
 }
@@ -1148,6 +1150,7 @@ static int match_home_ddf(struct supertype *st, char *homehost)
                ddf->controller.vendor_data[len] == 0);
 }
 
+#ifndef MDASSEMBLE
 static struct vd_config *find_vdcr(struct ddf_super *ddf, int inst)
 {
        struct vcl *v;
@@ -1157,6 +1160,7 @@ static struct vd_config *find_vdcr(struct ddf_super *ddf, int inst)
                        return &v->conf;
        return NULL;
 }
+#endif
 
 static int find_phys(struct ddf_super *ddf, __u32 phys_refnum)
 {
@@ -1176,11 +1180,14 @@ static void uuid_from_super_ddf(struct supertype *st, int uuid[4])
         *  uuid to put into bitmap file (Create, Grow)
         *  uuid for backup header when saving critical section (Grow)
         *  comparing uuids when re-adding a device into an array
+        *    In these cases the uuid required is that of the data-array,
+        *    not the device-set.
+        *  uuid to recognise same set when adding a missing device back
+        *    to an array.   This is a uuid for the device-set.
+        *  
         * For each of these we can make do with a truncated
         * or hashed uuid rather than the original, as long as
         * everyone agrees.
-        * In each case the uuid required is that of the data-array,
-        * not the device-set.
         * In the case of SVD we assume the BVD is of interest,
         * though that might be the case if a bitmap were made for
         * a mirrored SVD - worry about that later.
@@ -1190,19 +1197,21 @@ static void uuid_from_super_ddf(struct supertype *st, int uuid[4])
         */
        struct ddf_super *ddf = st->sb;
        struct vcl *vcl = ddf->currentconf;
+       char *guid;
+       char buf[20];
+       struct sha1_ctx ctx;
 
-       if (!vcl)
-               memset(uuid, 0, sizeof (uuid));
-       else {
-               char buf[20];
-               struct sha1_ctx ctx;
-               sha1_init_ctx(&ctx);
-               sha1_process_bytes(&vcl->conf.guid, DDF_GUID_LEN, &ctx);
-               if (vcl->conf.sec_elmnt_count > 1)
-                       sha1_process_bytes(&vcl->conf.sec_elmnt_seq, 1, &ctx);
-               sha1_finish_ctx(&ctx, buf);
-               memcpy(uuid, buf, sizeof(uuid));
-       }
+       if (vcl)
+               guid = vcl->conf.guid;
+       else
+               guid = ddf->anchor.guid;
+
+       sha1_init_ctx(&ctx);
+       sha1_process_bytes(guid, DDF_GUID_LEN, &ctx);
+       if (vcl && vcl->conf.sec_elmnt_count > 1)
+               sha1_process_bytes(&vcl->conf.sec_elmnt_seq, 1, &ctx);
+       sha1_finish_ctx(&ctx, buf);
+       memcpy(uuid, buf, 4*4);
 }
 
 static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info);
@@ -1244,12 +1253,15 @@ static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info)
 
 
        info->reshape_active = 0;
+       info->name[0] = 0;
 
+       info->array.major_version = -1;
+       info->array.minor_version = -2;
        strcpy(info->text_version, "ddf");
+       info->safe_mode_delay = 0;
 
-//     uuid_from_super_ddf(info->uuid, sbv);
+       uuid_from_super_ddf(st, info->uuid);
 
-//     info->name[] ?? ;
 }
 
 static int rlq_to_layout(int rlq, int prl, int raiddisks);
@@ -1299,11 +1311,14 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info)
        uuid_from_super_ddf(st, info->uuid);
 
        info->container_member = atoi(st->subarray);
+       info->array.major_version = -1;
+       info->array.minor_version = -2;
        sprintf(info->text_version, "/%s/%s",
                devnum2devname(st->container_dev),
                st->subarray);
+       info->safe_mode_delay = 200;
 
-//     info->name[] ?? ;
+       info->name[0] = 0;
 }
 
 
@@ -1712,6 +1727,7 @@ static int rlq_to_layout(int rlq, int prl, int raiddisks)
        return -1;
 }
 
+#ifndef MDASSEMBLE
 struct extent {
        unsigned long long start, size;
 };
@@ -1762,6 +1778,7 @@ FIXME ignore DDF_Legacy devices?
        rv[n].size = 0;
        return rv;
 }
+#endif
 
 static int init_super_ddf_bvd(struct supertype *st,
                              mdu_array_info_t *info,
@@ -1874,6 +1891,7 @@ static int init_super_ddf_bvd(struct supertype *st,
        return 1;
 }
 
+#ifndef MDASSEMBLE
 static void add_to_super_ddf_bvd(struct supertype *st,
                                 mdu_disk_info_t *dk, int fd, char *devname)
 {
@@ -1994,7 +2012,6 @@ static void add_to_super_ddf(struct supertype *st,
        dd->major = major(stb.st_rdev);
        dd->minor = minor(stb.st_rdev);
        dd->devname = devname;
-       dd->next = ddf->dlist;
        dd->fd = fd;
        dd->spare = NULL;
 
@@ -2027,8 +2044,20 @@ static void add_to_super_ddf(struct supertype *st,
        pde = &ddf->phys->entries[n];
        dd->pdnum = n;
 
-       n++;
-       ddf->phys->used_pdes = __cpu_to_be16(n);
+       if (st->update_tail) {
+               int len = (sizeof(struct phys_disk) +
+                          sizeof(struct phys_disk_entry));
+               struct phys_disk *pd;
+
+               pd = malloc(len);
+               pd->magic = DDF_PHYS_RECORDS_MAGIC;
+               pd->used_pdes = __cpu_to_be16(n);
+               pde = &pd->entries[0];
+               dd->mdupdate = pd;
+       } else {
+               n++;
+               ddf->phys->used_pdes = __cpu_to_be16(n);
+       }
 
        memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN);
        pde->refnum = dd->disk.refnum;
@@ -2041,8 +2070,14 @@ static void add_to_super_ddf(struct supertype *st,
        memset(pde->pad, 0xff, 6);
 
        dd->size = size >> 9;
-       ddf->dlist = dd;
-       ddf->updates_pending = 1;
+       if (st->update_tail) {
+               dd->next = ddf->add_list;
+               ddf->add_list = dd;
+       } else {
+               dd->next = ddf->dlist;
+               ddf->dlist = dd;
+               ddf->updates_pending = 1;
+       }
 }
 
 /*
@@ -2051,8 +2086,6 @@ static void add_to_super_ddf(struct supertype *st,
  * container.
  */
 
-#ifndef MDASSEMBLE
-
 static unsigned char null_conf[4096+512];
 
 static int __write_init_super_ddf(struct supertype *st, int do_close)
@@ -2161,6 +2194,21 @@ static int write_init_super_ddf(struct supertype *st)
                struct ddf_super *ddf = st->sb;
                int len;
 
+               if (!ddf->currentconf) {
+                       int len = (sizeof(struct phys_disk) +
+                                  sizeof(struct phys_disk_entry));
+
+                       /* adding a disk to the container. */
+                       if (!ddf->add_list)
+                               return 0;
+
+                       append_metadata_update(st, ddf->add_list->mdupdate, len);
+                       ddf->add_list->mdupdate = NULL;
+                       return 0;
+               }
+
+               /* Newly created VD */
+
                /* First the virtual disk.  We have a slightly fake header */
                len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
                vd = malloc(len);
@@ -2500,6 +2548,7 @@ static int load_super_ddf_all(struct supertype *st, int fd,
                dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY);
                if (dfd < 0)
                        return 2;
+               load_ddf_headers(dfd, super, NULL);
                seq = load_ddf_local(dfd, super, NULL, keep_fd);
                if (!keep_fd) close(dfd);
        }
@@ -2519,9 +2568,10 @@ static int load_super_ddf_all(struct supertype *st, int fd,
                st->max_devs = 512;
                st->container_dev = fd2devnum(fd);
        }
+       st->loaded_container = 1;
        return 0;
 }
-#endif
+#endif /* MDASSEMBLE */
 
 static struct mdinfo *container_content_ddf(struct supertype *st)
 {
@@ -2552,6 +2602,8 @@ static struct mdinfo *container_content_ddf(struct supertype *st)
                this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
                                                   this->array.raid_disks);
                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));
                this->array.utime         = DECADE +
@@ -2569,13 +2621,17 @@ static struct mdinfo *container_content_ddf(struct supertype *st)
                        this->resync_start = ~0ULL;
                }
                memcpy(this->name, ddf->virt->entries[i].name, 32);
-               this->name[33]=0;
+               this->name[32]=0;
 
                memset(this->uuid, 0, sizeof(this->uuid));
                this->component_size = __be64_to_cpu(vc->conf.blocks);
                this->array.size = this->component_size / 2;
                this->container_member = i;
 
+               ddf->currentconf = vc;
+               uuid_from_super_ddf(st, this->uuid);
+               ddf->currentconf = NULL;
+
                sprintf(this->text_version, "/%s/%d",
                        devnum2devname(st->container_dev),
                        this->container_member);
@@ -2658,6 +2714,7 @@ static int compare_super_ddf(struct supertype *st, struct supertype *tst)
        return 0;
 }
 
+#ifndef MDASSEMBLE
 /*
  * A new array 'a' has been started which claims to be instance 'inst'
  * within container 'c'.
@@ -2680,11 +2737,17 @@ static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst)
  * For DDF, we need to clear the DDF_state_inconsistent bit in the
  * !global! virtual_disk.virtual_entry structure.
  */
-static void ddf_set_array_state(struct active_array *a, int consistent)
+static int ddf_set_array_state(struct active_array *a, int consistent)
 {
        struct ddf_super *ddf = a->container->sb;
        int inst = a->info.container_member;
        int old = ddf->virt->entries[inst].state;
+       if (consistent == 2) {
+               /* Should check if a recovery should be started FIXME */
+               consistent = 1;
+               if (a->resync_start != ~0ULL)
+                       consistent = 0;
+       }
        if (consistent)
                ddf->virt->entries[inst].state &= ~DDF_state_inconsistent;
        else
@@ -2705,6 +2768,7 @@ static void ddf_set_array_state(struct active_array *a, int consistent)
 
        dprintf("ddf mark %d %s %llu\n", inst, consistent?"clean":"dirty",
                a->resync_start);
+       return consistent;
 }
 
 /*
@@ -2887,6 +2951,20 @@ static void ddf_process_update(struct supertype *st,
                ddf->phys->used_pdes = __cpu_to_be16(1 +
                                           __be16_to_cpu(ddf->phys->used_pdes));
                ddf->updates_pending = 1;
+               if (ddf->add_list) {
+                       struct active_array *a;
+                       struct dl *al = ddf->add_list;
+                       ddf->add_list = al->next;
+
+                       al->next = ddf->dlist;
+                       ddf->dlist = al;
+
+                       /* As a device has been added, we should check
+                        * for any degraded devices that might make
+                        * use of this spare */
+                       for (a = st->arrays ; a; a=a->next)
+                               a->check_degraded = 1;
+               }
                break;
 
        case DDF_VIRT_RECORDS_MAGIC:
@@ -3186,6 +3264,7 @@ static struct mdinfo *ddf_activate_spare(struct active_array *a,
        *updates = mu;
        return rv;
 }
+#endif /* MDASSEMBLE */
 
 struct superswitch super_ddf = {
 #ifndef        MDASSEMBLE
@@ -3195,6 +3274,7 @@ struct superswitch super_ddf = {
        .brief_detail_super = brief_detail_super_ddf,
        .validate_geometry = validate_geometry_ddf,
        .write_init_super = write_init_super_ddf,
+       .add_to_super   = add_to_super_ddf,
 #endif
        .match_home     = match_home_ddf,
        .uuid_from_super= uuid_from_super_ddf,
@@ -3210,11 +3290,11 @@ struct superswitch super_ddf = {
        .store_super    = store_zero_ddf,
        .free_super     = free_super_ddf,
        .match_metadata_desc = match_metadata_desc_ddf,
-       .add_to_super   = add_to_super_ddf,
        .container_content = container_content_ddf,
 
        .external       = 1,
 
+#ifndef MDASSEMBLE
 /* for mdmon */
        .open_new       = ddf_open_new,
        .set_array_state= ddf_set_array_state,
@@ -3223,5 +3303,5 @@ struct superswitch super_ddf = {
        .process_update = ddf_process_update,
        .prepare_update = ddf_prepare_update,
        .activate_spare = ddf_activate_spare,
-
+#endif
 };