X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=super0.c;h=3218377f74f4d72e12b4a6f4559d8041264ff0c6;hb=054cba77190f1ec787e6d0fba5a5f76f03b96638;hp=dab85db8d2d514560147956cdd77fa2994da928b;hpb=c0c1acd691e3809647f464f88e57405a01e12b30;p=thirdparty%2Fmdadm.git diff --git a/super0.c b/super0.c index dab85db8..3218377f 100644 --- a/super0.c +++ b/super0.c @@ -36,7 +36,6 @@ * .. other stuff */ - static unsigned long calc_sb0_csum(mdp_super_t *super) { unsigned long csum = super->sb_csum; @@ -47,7 +46,6 @@ static unsigned long calc_sb0_csum(mdp_super_t *super) return newcsum; } - static void super0_swap_endian(struct mdp_superblock_s *sb) { /* as super0 superblocks are host-endian, it is sometimes @@ -114,7 +112,7 @@ static void examine_super0(struct supertype *st, char *homehost) c=map_num(pers, sb->level); printf(" Raid Level : %s\n", c?c:"-unknown-"); if ((int)sb->level > 0) { - int ddsks=0; + int ddsks = 0, ddsks_denom = 1; printf(" Used Dev Size : %d%s\n", sb->size, human_size((long long)sb->size<<10)); switch(sb->level) { @@ -122,11 +120,15 @@ static void examine_super0(struct supertype *st, char *homehost) case 4: case 5: ddsks = sb->raid_disks-1; break; case 6: ddsks = sb->raid_disks-2; break; - case 10: ddsks = sb->raid_disks / (sb->layout&255) / ((sb->layout>>8)&255); + case 10: ddsks = sb->raid_disks; + ddsks_denom = (sb->layout&255) * ((sb->layout>>8)&255); + } + if (ddsks) { + long long asize = sb->size; + asize = (asize << 10) * ddsks / ddsks_denom; + printf(" Array Size : %llu%s\n", + asize >> 10, human_size(asize)); } - if (ddsks) - printf(" Array Size : %llu%s\n", (unsigned long long)ddsks * sb->size, - human_size(ddsks*(long long)sb->size<<10)); } printf(" Raid Devices : %d\n", sb->raid_disks); printf(" Total Devices : %d\n", sb->nr_disks); @@ -277,6 +279,51 @@ static void export_examine_super0(struct supertype *st) + sb->events_lo); } +static int copy_metadata0(struct supertype *st, int from, int to) +{ + /* Read 64K from the appropriate offset of 'from' + * and if it looks a little like a 0.90 superblock, + * write it to the same offset of 'to' + */ + void *buf; + unsigned long long dsize, offset; + const int bufsize = 64*1024; + mdp_super_t *super; + + if (posix_memalign(&buf, 4096, bufsize) != 0) + return 1; + + if (!get_dev_size(from, NULL, &dsize)) + goto err; + + if (dsize < MD_RESERVED_SECTORS*512) + goto err; + + offset = MD_NEW_SIZE_SECTORS(dsize>>9); + + offset *= 512; + + if (lseek64(from, offset, 0) < 0LL) + goto err; + if (read(from, buf, bufsize) != bufsize) + goto err; + + if (lseek64(to, offset, 0) < 0LL) + goto err; + super = buf; + if (super->md_magic != MD_SB_MAGIC || + super->major_version != 0 || + calc_sb0_csum(super) != super->sb_csum) + goto err; + if (write(to, buf, bufsize) != bufsize) + goto err; + free(buf); + return 0; +err: + free(buf); + return 1; +} + static void detail_super0(struct supertype *st, char *homehost) { mdp_super_t *sb = st->sb; @@ -414,7 +461,7 @@ static struct mdinfo *container_content0(struct supertype *st, char *subarray) if (subarray) return NULL; - info = malloc(sizeof(*info)); + info = xmalloc(sizeof(*info)); getinfo_super0(st, info, NULL); return info; } @@ -431,6 +478,18 @@ static int update_super0(struct supertype *st, struct mdinfo *info, int rv = 0; int uuid[4]; mdp_super_t *sb = st->sb; + + if (strcmp(update, "homehost") == 0 && + homehost) { + /* note that 'homehost' is special as it is really + * a "uuid" update. + */ + uuid_set = 0; + update = "uuid"; + info->uuid[0] = sb->set_uuid0; + info->uuid[1] = sb->set_uuid1; + } + if (strcmp(update, "sparc2.2")==0 ) { /* 2.2 sparc put the events in the wrong place * So we copy the tail of the superblock @@ -441,12 +500,12 @@ static int update_super0(struct supertype *st, struct mdinfo *info, sb32+MD_SB_GENERIC_CONSTANT_WORDS+7+1, (MD_SB_WORDS - (MD_SB_GENERIC_CONSTANT_WORDS+7+1))*4); if (verbose >= 0) - fprintf (stderr, Name ": adjusting superblock of %s for 2.2/sparc compatability.\n", - devname); + pr_err("adjusting superblock of %s for 2.2/sparc compatibility.\n", + devname); } else if (strcmp(update, "super-minor") ==0) { sb->md_minor = info->array.md_minor; if (verbose > 0) - fprintf(stderr, Name ": updating superblock of %s with minor number %d\n", + pr_err("updating superblock of %s with minor number %d\n", devname, info->array.md_minor); } else if (strcmp(update, "summaries") == 0) { unsigned int i; @@ -547,12 +606,6 @@ static int update_super0(struct supertype *st, struct mdinfo *info, /* make sure resync happens */ sb->state &= ~(1<recovery_cp = 0; - } else if (strcmp(update, "homehost") == 0 && - homehost) { - uuid_set = 0; - update = "uuid"; - info->uuid[0] = sb->set_uuid0; - info->uuid[1] = sb->set_uuid1; } else if (strcmp(update, "uuid") == 0) { if (!uuid_set && homehost) { char buf[20]; @@ -571,6 +624,58 @@ static int update_super0(struct supertype *st, struct mdinfo *info, uuid_from_super0(st, uuid); memcpy(bm->uuid, uuid, 16); } + } else if (strcmp(update, "metadata") == 0) { + /* Create some v1.0 metadata to match ours but make the + * ctime bigger. Also update info->array.*_version. + * We need to arrange that store_super writes out + * the v1.0 metadata. + * Not permitted for unclean array, or array with + * bitmap. + */ + if (info->bitmap_offset) { + pr_err("Cannot update metadata when bitmap is present\n"); + rv = -2; + } else if (info->array.state != 1) { + pr_err("Cannot update metadata on unclean array\n"); + rv = -2; + } else { + info->array.major_version = 1; + info->array.minor_version = 0; + uuid_from_super0(st, info->uuid); + st->other = super1_make_v0(st, info, st->sb); + } + } else if (strcmp(update, "revert-reshape") == 0) { + rv = -2; + if (sb->minor_version <= 90) + pr_err("No active reshape to revert on %s\n", + devname); + else if (sb->delta_disks == 0) + pr_err("%s: Can only revert reshape which changes number of devices\n", + devname); + else { + int tmp; + int parity = sb->level == 6 ? 2 : 1; + rv = 0; + + if (sb->level >= 4 && sb->level <= 6 && + sb->reshape_position % ( + sb->new_chunk/512 * + (sb->raid_disks - sb->delta_disks - parity))) { + pr_err("Reshape position is not suitably aligned.\n"); + pr_err("Try normal assembly and stop again\n"); + return -2; + } + sb->raid_disks -= sb->delta_disks; + sb->delta_disks = -sb->delta_disks; + + tmp = sb->new_layout; + sb->new_layout = sb->layout; + sb->layout = tmp; + + tmp = sb->new_chunk; + sb->new_chunk = sb->chunk_size; + sb->chunk_size = tmp; + } } else if (strcmp(update, "no-bitmap") == 0) { sb->state &= ~(1<working_disks - info->active_disks; if (info->raid_disks + spares > MD_SB_DISKS) { - fprintf(stderr, Name ": too many devices requested: %d+%d > %d\n", + pr_err("too many devices requested: %d+%d > %d\n", info->raid_disks , spares, MD_SB_DISKS); return 0; } @@ -629,9 +738,9 @@ static int init_super0(struct supertype *st, mdu_array_info_t *info, sb->gvalid_words = 0; /* ignored */ sb->ctime = time(0); sb->level = info->level; - if (size != (unsigned long long)info->size) + sb->size = size; + if (size != (unsigned long long)sb->size) return 0; - sb->size = info->size; sb->nr_disks = info->nr_disks; sb->raid_disks = info->raid_disks; sb->md_minor = info->md_minor; @@ -653,7 +762,7 @@ static int init_super0(struct supertype *st, mdu_array_info_t *info, if (rfd >= 0) close(rfd); } - if (homehost) { + if (homehost && !uuid) { char buf[20]; char *hash = sha1_buffer(homehost, strlen(homehost), @@ -686,7 +795,7 @@ struct devinfo { #ifndef MDASSEMBLE /* Add a device to the superblock being created */ static int add_to_super0(struct supertype *st, mdu_disk_info_t *dinfo, - int fd, char *devname) + int fd, char *devname, unsigned long long data_offset) { mdp_super_t *sb = st->sb; mdp_disk_t *dk = &sb->disks[dinfo->number]; @@ -706,7 +815,7 @@ static int add_to_super0(struct supertype *st, mdu_disk_info_t *dinfo, dip = (struct devinfo **)&st->info; while (*dip) dip = &(*dip)->next; - di = malloc(sizeof(struct devinfo)); + di = xmalloc(sizeof(struct devinfo)); di->fd = fd; di->devname = devname; di->disk = *dinfo; @@ -729,6 +838,24 @@ static int store_super0(struct supertype *st, int fd) if (dsize < MD_RESERVED_SECTORS*512) return 2; + if (st->other) { + /* Writing out v1.0 metadata for --update=metadata */ + int ret = 0; + + offset = dsize/512 - 8*2; + offset &= ~(4*2-1); + offset *= 512; + if (lseek64(fd, offset, 0)< 0LL) + ret = 3; + else if (write(fd, st->other, 1024) != 1024) + ret = 4; + else + fsync(fd); + free(st->other); + st->other = NULL; + return ret; + } + offset = MD_NEW_SIZE_SECTORS(dsize>>9); offset *= 512; @@ -742,7 +869,7 @@ static int store_super0(struct supertype *st, int fd) if (super->state & (1<magic) == BITMAP_MAGIC) - if (write(fd, bm, ROUND_UP(sizeof(*bm),4096)) != + if (write(fd, bm, ROUND_UP(sizeof(*bm),4096)) != ROUND_UP(sizeof(*bm),4096)) return 5; } @@ -764,7 +891,7 @@ static int write_init_super0(struct supertype *st) continue; if (di->fd == -1) continue; - while (Kill(di->devname, NULL, 0, 1, 1) == 0) + while (Kill(di->devname, NULL, 0, -1, 1) == 0) ; sb->disks[di->disk.number].state &= ~(1<ss->write_bitmap(st, di->fd); if (rv) - fprintf(stderr, - Name ": failed to write superblock to %s\n", - di->devname); + pr_err("failed to write superblock to %s\n", + di->devname); } return rv; } @@ -802,10 +928,9 @@ static int compare_super0(struct supertype *st, struct supertype *tst) return 1; if (!first) { if (posix_memalign((void**)&first, 4096, - MD_SB_BYTES + + MD_SB_BYTES + ROUND_UP(sizeof(struct bitmap_super_s), 4096)) != 0) { - fprintf(stderr, Name - ": %s could not allocate superblock\n", __func__); + pr_err("%s could not allocate superblock\n", __func__); return 1; } memcpy(first, second, MD_SB_BYTES + sizeof(struct bitmap_super_s)); @@ -830,7 +955,6 @@ static int compare_super0(struct supertype *st, struct supertype *tst) return 0; } - static void free_super0(struct supertype *st); static int load_super0(struct supertype *st, int fd, char *devname) @@ -854,21 +978,19 @@ static int load_super0(struct supertype *st, int fd, char *devname) if (dsize < MD_RESERVED_SECTORS*512) { if (devname) - fprintf(stderr, Name - ": %s is too small for md: size is %llu sectors.\n", - devname, dsize); + pr_err("%s is too small for md: size is %llu sectors.\n", + devname, dsize); return 1; } + st->devsize = dsize; offset = MD_NEW_SIZE_SECTORS(dsize>>9); offset *= 512; - ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */ - if (lseek64(fd, offset, 0)< 0LL) { if (devname) - fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n", + pr_err("Cannot seek to superblock on %s: %s\n", devname, strerror(errno)); return 1; } @@ -876,14 +998,13 @@ static int load_super0(struct supertype *st, int fd, char *devname) if (posix_memalign((void**)&super, 4096, MD_SB_BYTES + ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) { - fprintf(stderr, Name - ": %s could not allocate superblock\n", __func__); + pr_err("%s could not allocate superblock\n", __func__); return 1; } if (read(fd, super, sizeof(*super)) != MD_SB_BYTES) { if (devname) - fprintf(stderr, Name ": Cannot read superblock on %s\n", + pr_err("Cannot read superblock on %s\n", devname); free(super); return 1; @@ -894,7 +1015,7 @@ static int load_super0(struct supertype *st, int fd, char *devname) if (super->md_magic != MD_SB_MAGIC) { if (devname) - fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n", + pr_err("No super block found on %s (Expected magic %08x, got %08x)\n", devname, MD_SB_MAGIC, super->md_magic); free(super); return 2; @@ -902,7 +1023,7 @@ static int load_super0(struct supertype *st, int fd, char *devname) if (super->major_version != 0) { if (devname) - fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n", + pr_err("Cannot interpret superblock on %s - version is %d\n", devname, super->major_version); free(super); return 2; @@ -942,11 +1063,9 @@ static int load_super0(struct supertype *st, int fd, char *devname) static struct supertype *match_metadata_desc0(char *arg) { - struct supertype *st = malloc(sizeof(*st)); - if (!st) return st; + struct supertype *st = xcalloc(1, sizeof(*st)); - memset(st, 0, sizeof(*st)); - st->container_dev = NoMdDev; + st->container_devnm[0] = 0; st->ss = &super0; st->info = NULL; st->minor_version = 90; @@ -977,8 +1096,11 @@ static struct supertype *match_metadata_desc0(char *arg) return NULL; } -static __u64 avail_size0(struct supertype *st, __u64 devsize) +static __u64 avail_size0(struct supertype *st, __u64 devsize, + unsigned long long data_offset) { + if (data_offset != 0 && data_offset != INVALID_SECTORS) + return 0ULL; if (devsize < MD_RESERVED_SECTORS) return 0ULL; return MD_NEW_SIZE_SECTORS(devsize); @@ -1003,7 +1125,6 @@ static int add_internal_bitmap0(struct supertype *st, int *chunkp, bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES); int uuid[4]; - min_chunk = 4096; /* sub-page chunks don't work yet.. */ bits = (size * 512) / min_chunk + 1; while (bits > max_bits) { @@ -1035,7 +1156,6 @@ static int add_internal_bitmap0(struct supertype *st, int *chunkp, return 1; } - static void locate_bitmap0(struct supertype *st, int fd) { unsigned long long dsize; @@ -1065,13 +1185,11 @@ static int write_bitmap0(struct supertype *st, int fd) int rv = 0; int towrite, n; - char abuf[4096+4096]; - char *buf = (char*)(((long)(abuf+4096))&~4095L); + void *buf; if (!get_dev_size(fd, NULL, &dsize)) return 1; - if (dsize < MD_RESERVED_SECTORS*512) return -1; @@ -1082,6 +1200,9 @@ static int write_bitmap0(struct supertype *st, int fd) if (lseek64(fd, offset + 4096, 0)< 0LL) return 3; + if (posix_memalign(&buf, 4096, 4096)) + return -ENOMEM; + memset(buf, 0xff, 4096); memcpy(buf, ((char*)sb)+MD_SB_BYTES, sizeof(bitmap_super_t)); towrite = 60*1024; @@ -1100,6 +1221,7 @@ static int write_bitmap0(struct supertype *st, int fd) if (towrite) rv = -2; + free(buf); return rv; } @@ -1121,6 +1243,7 @@ static void free_super0(struct supertype *st) static int validate_geometry0(struct supertype *st, int level, int layout, int raiddisks, int *chunk, unsigned long long size, + unsigned long long data_offset, char *subdev, unsigned long long *freesize, int verbose) { @@ -1136,22 +1259,22 @@ static int validate_geometry0(struct supertype *st, int level, if (level == LEVEL_CONTAINER) { if (verbose) - fprintf(stderr, Name ": 0.90 metadata does not support containers\n"); + pr_err("0.90 metadata does not support containers\n"); return 0; } if (raiddisks > MD_SB_DISKS) { if (verbose) - fprintf(stderr, Name ": 0.90 metadata supports at most %d devices per array\n", + pr_err("0.90 metadata supports at most %d devices per array\n", MD_SB_DISKS); return 0; } if (size >= tbmax * 2ULL*1024*1024*1024) { if (verbose) - fprintf(stderr, Name ": 0.90 metadata supports at most " - "%d terabytes per device\n", tbmax); + pr_err("0.90 metadata supports at most " + "%d terabytes per device\n", tbmax); return 0; } - if (chunk && *chunk == UnSet) + if (*chunk == UnSet) *chunk = DEFAULT_CHUNK; if (!subdev) @@ -1160,7 +1283,7 @@ static int validate_geometry0(struct supertype *st, int level, fd = open(subdev, O_RDONLY|O_EXCL, 0); if (fd < 0) { if (verbose) - fprintf(stderr, Name ": super0.90 cannot open %s: %s\n", + pr_err("super0.90 cannot open %s: %s\n", subdev, strerror(errno)); return 0; } @@ -1188,6 +1311,7 @@ struct superswitch super0 = { .write_init_super = write_init_super0, .validate_geometry = validate_geometry0, .add_to_super = add_to_super0, + .copy_metadata = copy_metadata0, #endif .match_home = match_home0, .uuid_from_super = uuid_from_super0,