xfs_growfs fails with error: data size <xxxx> too small, old size is <yyyy>

Issue

• Attempts to extend an XFS filesystem using xfs_growfs fail. The command output indicates that the detected "data size" is smaller than the current "old size" of the filesystem:

  # xfs_growfs /data
  meta-data=/dev/mapper/vg_data-lv_data1 isize=512    agcount=4, agsize=327680 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
  data     =                       bsize=4096   blocks=1310720, imaxpct=25
         =                       sunit=0      swidth=0 blks
  naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
  log      =internal log           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
  realtime =none                   extsz=4096   blocks=0, rtextents=0
  data size 1048576 too small, old size is 1310720