AIX 非rootvg的 lv 主备超级块都损坏，无法挂载！如何恢复lv中的数据。求解！急！

fsck检查lv分区：

#

# fsck /dev/db2_test

The current volume is: /dev/db2_test

fsck: 0507-020 Invalid magic number in the primary superblock.

fsck: 0507-013 Invalid magic number in the secondary superblock.

Primary superblock is corrupt.

Secondary superblock is corrupt.

fsck: 0507-018 Superblock is corrupt and cannot be repaired.

        Both primary and secondary copies are corrupt. Cannot continue.