diff options
Diffstat (limited to 'super1.c')
| -rw-r--r-- | super1.c | 36 |
1 files changed, 36 insertions, 0 deletions
@@ -621,10 +621,14 @@ static void uuid_from_super1(struct supertype *st, int uuid[4]) static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) { struct mdp_superblock_1 *sb = st->sb; + struct bitmap_super_s *bsb = (void*)(((char*)sb)+MAX_SB_SIZE); + struct misc_dev_info *misc = (void*)(((char*)sb)+MAX_SB_SIZE+BM_SUPER_SIZE); int working = 0; unsigned int i; unsigned int role; unsigned int map_disks = info->array.raid_disks; + unsigned long long super_offset; + unsigned long long data_size; memset(info, 0, sizeof(*info)); info->array.major_version = 1; @@ -655,6 +659,38 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map) else role = __le16_to_cpu(sb->dev_roles[__le32_to_cpu(sb->dev_number)]); + super_offset = __le64_to_cpu(sb->super_offset); + data_size = __le64_to_cpu(sb->size); + if (info->data_offset < super_offset) { + unsigned long long end; + info->space_before = info->data_offset; + end = super_offset; + if (info->bitmap_offset < 0) + end += info->bitmap_offset; + if (info->data_offset + data_size < end) + info->space_after = end - data_size - info->data_offset; + else + info->space_after = 0; + } else { + info->space_before = (info->data_offset - + super_offset); + if (info->bitmap_offset > 0) { + unsigned long long bmend = info->bitmap_offset; + unsigned long long size = __le64_to_cpu(bsb->sync_size); + size /= __le32_to_cpu(bsb->chunksize) >> 9; + size = (size + 7) >> 3; + size += sizeof(bitmap_super_t); + size = ROUND_UP(size, 4096); + size /= 512; + size += bmend; + if (size < info->space_before) + info->space_before -= size; + else + info->space_before = 0; + } + info->space_after = misc->device_size - data_size - info->data_offset; + } + info->disk.raid_disk = -1; switch(role) { case 0xFFFF: |