XFS Filesystem is broken and cant repair and mount!

[Dragon]

Hello,
i changed the sata cable and upgrade kernel to latest. If i now copy files i got a new failure:
 XFS: Internal error XFS_WANT_CORRUPTED_RETURN at line 348 of file /build/linux-nBoDV9/linux-3.16.3/fs/xfs/xfs_alloc.c.  Caller xfs_alloc_ag_vextent_size+0x569/0x6c0 [xfs]
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I found a forum thread in which another solved the problem and i am not sure, but perhaps i have the same problem. My initial raid was aprox. 6TB and rised step by step to 20TB.
my xfs_info:
Metadaten =/dev/md2               isize=256    agcount=112, agsize=45598848 blks
          =                       sectsz=4096  attr=2
Daten     =                       bsize=4096   Blöcke=5107057536, imaxpct=5
          =                       sunit=128    swidth=256 blks
Benennung =Version 2              bsize=4096   ascii-ci=0
Protokoll =Intern                 bsize=4096   Blöcke=521728, Version=2
          =                       sectsz=4096  sunit=1 blks, lazy-count=1
Echtzeit  =keine                  extsz=4096   Blöcke=0, rtextents=0
 
Could i have a problem with the group_size?