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I had a XFS filesystem on RAID 5, but line of the power supply 230 V had crash . UPS failed, 2 hard disk drive on RAID (4 hard disk) failed (medium error) - then before turn of computer I resynchronize this RAID. Fdisk recognized filesystem as XFS. Using dd with conv=noerror, sync I clone XFS filesystem on external hard disk. After restart machine I never can resynchronize RAID to see XFS filesystem. Then I connect hard disk to computer I can mount , but I see numbers as filename with extensions.
couldn't verify primary superblock not enough secondary superblocks with matching geometry
attempting to find secondary superblock......................
cannot init perag data (117).
I use xfs_explorer, UFS Explorer Professional Recovery, photorec, testdisk to recover files, but any of this nothing do.
It's very important because on filesystem XFS there was a virtual machine file with many MS SQL databases. I can't have backup because packed backup file has a 17 GB, external hard disk destroyed after the supertension of the energy network.