website-struct

Struct: mdp_superblock_1

Status

Regular

• In 4.4: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 4.8: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 4.10: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 4.13: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 4.15: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 4.18: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.0: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.3: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.4: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.8: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.11: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.13: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.15: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 5.19: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 6.2: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 6.5: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In 6.8: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

Arch

• In arm64: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In armhf: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In ppc64el: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In riscv64: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

Flavor

• In aws: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In azure: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In gcp: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

• In lowlatency: ✅

  struct mdp_superblock_1 {
      __le32 magic;
      __le32 major_version;
      __le32 feature_map;
      __le32 pad0;
      __u8 set_uuid[16];
      char set_name[32];
      __le64 ctime;
      __le32 level;
      __le32 layout;
      __le64 size;
      __le32 chunksize;
      __le32 raid_disks;
      __le32 bitmap_offset;
      struct (anon) ppl;
      __le32 new_level;
      __le64 reshape_position;
      __le32 delta_disks;
      __le32 new_layout;
      __le32 new_chunk;
      __le32 new_offset;
      __le64 data_offset;
      __le64 data_size;
      __le64 super_offset;
      __le64 recovery_offset;
      __le64 journal_tail;
      __le32 dev_number;
      __le32 cnt_corrected_read;
      __u8 device_uuid[16];
      __u8 devflags;
      __u8 bblog_shift;
      __le16 bblog_size;
      __le32 bblog_offset;
      __le64 utime;
      __le64 events;
      __le64 resync_offset;
      __le32 sb_csum;
      __le32 max_dev;
      __u8 pad3[32];
      __le16 dev_roles[0];
  };
  

Differences

Regular

• No changes between 4.4 and 4.8 ✅
• No changes between 4.8 and 4.10 ✅
• Changed between 4.10 and 4.13 ⚠️

  • Field added. struct (anon) ppl
• No changes between 4.13 and 4.15 ✅
• No changes between 4.15 and 4.18 ✅
• No changes between 4.18 and 5.0 ✅
• No changes between 5.0 and 5.3 ✅
• No changes between 5.3 and 5.4 ✅
• No changes between 5.4 and 5.8 ✅
• No changes between 5.8 and 5.11 ✅
• No changes between 5.11 and 5.13 ✅
• No changes between 5.13 and 5.15 ✅
• No changes between 5.15 and 5.19 ✅
• No changes between 5.19 and 6.2 ✅
• No changes between 6.2 and 6.5 ✅
• No changes between 6.5 and 6.8 ✅

Arch

• No changes between amd64 and arm64 ✅
• No changes between amd64 and armhf ✅
• No changes between amd64 and ppc64el ✅
• No changes between amd64 and riscv64 ✅

Flavor

• No changes between generic and aws ✅
• No changes between generic and azure ✅
• No changes between generic and gcp ✅
• No changes between generic and lowlatency ✅