XFS Repair hangs at inode repair in phase3

[Dragon]

Hello,
i have a fresh install Debian Wheezy with software raid as md2 for my files. MD2 is nealry full of 8TB and i wanted to migrate the data to a newier system. While copy files i got an message that i have to run xfs_repair. I first run xfs_check but it eats up all my 11GB memory and the system stalls. Then i run xfs_repair -n /dev/md2 but it hangs each time add:
problem with directory contens in inode 2147997719 - would have cleared inode 2147997719. If i break this and restart, it hangs at the same position. System seems to do nothing over hours.
 
Some Infos:
xfsprogs in Version 3.1.7+b1
Kernel: 3.2.0-4-amd64
1 CPU with 2 Cores
Disks are Seagate ST3000DM001
MD2 = Software Raid6 clear 4/5 disks
LVM = no
cat /proc/meminfo
MemTotal:       12057912 kB
MemFree:         9016128 kB
Buffers:            9760 kB
Cached:            56260 kB
SwapCached:            0 kB
Active:          2908368 kB
Inactive:          42616 kB
Active(anon):    2887884 kB
Inactive(anon):      300 kB
Active(file):      20484 kB
Inactive(file):    42316 kB
Unevictable:        4280 kB
Mlocked:            4280 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                28 kB
Writeback:             0 kB
AnonPages:       2889240 kB
Mapped:            10656 kB
Shmem:               508 kB
Slab:              21156 kB
SReclaimable:       6240 kB
SUnreclaim:        14916 kB
KernelStack:         760 kB
PageTables:         7904 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     6028956 kB
Committed_AS:    2751008 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      311940 kB
VmallocChunk:   34359422892 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       50816 kB
DirectMap2M:     2813952 kB
DirectMap1G:     9437184 kB
-------

cat /proc/partitions
major minor  #blocks  name
   8       16 2930266584 sdb
   8       17      96256 sdb1
   8       18    9765888 sdb2
   8       19    1952768 sdb3
   8       20 2918450176 sdb4
   8        0 2930266584 sda
   8        1 2930265088 sda1
   8       32 2930266584 sdc
   8       33      96256 sdc1
   8       34    9765888 sdc2
   8       35    1952768 sdc3
   8       36 2918450176 sdc4
   8       48 2930266584 sdd
   8       49      96256 sdd1
   8       50    9765888 sdd2
   8       51    1952768 sdd3
   8       52 2918450176 sdd4
   8       64 2930266584 sde
   8       65      96256 sde1
   8       66    9765888 sde2
   8       67    1952768 sde3
   8       68 2918450176 sde4
   8       80 2930266584 sdf
   8       81 2930265088 sdf1
   9        0    9757568 md0
   9        2 8754955776 md2
 
Any help?