[ibd2sql] mysql数据恢复案例005 -- 5.7.30的一个json导致的报错

Traceback (most recent call last):
  File "/tmp/t20251024/ibd2sql-2.1/main.py", line 503, in <module>
    IBD2SQL_SINGLE(table,x,opt,filename_pre,log,parser,FRAGMENT_FILENAME_PRE)
  File "/tmp/t20251024/ibd2sql-2.1/ibd2sql/ibd2sql.py", line 433, in IBD2SQL_SINGLE
    row += idx.get_sql(False)
  File "/tmp/t20251024/ibd2sql-2.1/ibd2sql/innodb_page/index.py", line 138, in _get_sql_single
    for data in self.get_all_rows(deleted):
  File "/tmp/t20251024/ibd2sql-2.1/ibd2sql/innodb_page/index.py", line 170, in get_all_rows
    row,pageid = self._read_row()
  File "/tmp/t20251024/ibd2sql-2.1/ibd2sql/innodb_page/index.py", line 385, in _read_row_pk_leaf
    row.update(self._read_field(the_rest_of_field,null_list,size_list))
  File "/tmp/t20251024/ibd2sql-2.1/ibd2sql/innodb_page/index.py", line 428, in _read_field
    data = col['decode'](data,*col['args'])
  File "/tmp/t20251024/ibd2sql-2.1/ibd2sql/utils/b2data.py", line 344, in B2JSON
    return repr(json.dumps(jsonob(data[1:],struct.unpack('<B',data[:1])[0]).init()))
struct.error: unpack requires a buffer of 1 bytes

import struct
f = open('test_yi_tuo_ming.ibd','rb')
f.seek(3*16384,0) # rootno
data = f.read(16384)
page_type, = struct.unpack('>H',data[24:26])
page_level,indexid = struct.unpack('>HQ',data[64:74])
print('PAGE LEVEL:',page_level)
# 子节点
offset = struct.unpack('>h',data[97:99])[0]+99
pk,pageno = struct.unpack('>QL',data[offset:offset+12])
f.seek(pageno*16384,0);data = f.read(16384)
# 子节点 页类型
data[24:26]
checksum,current_pageno,pre_pageno,next_pageno = struct.unpack('>4L',data[:16])
print(checksum,current_pageno,pre_pageno,next_pageno)

python3 main.py test_yi_tuo_ming.ibd --sql --set leafno=3 --force --log >/dev/null