Structure needs cleaning - Seagate Expansion External HDD 2TB USB

[Marcel z maleho mesta]

Hi all,

I'm new to Linux (still got Win XP running on my laptops :(, but 
installed on my old machine Fedora 12, which looks really good :)

I have got a problem with my external Seagate Expansion External HDD 2TB 
USB drive which has been connected to my NAS Bufallo LinkStation Mini.

I did have to disconnect the USB drive from NAS one day and since then 
it would not be recognised by NAS. So have tried some Win tools, but the 
USB drive has got XFS file system.

When I plug it to pc running Fedora 12, Palimpsest Disk Utility see the 
Hard Drive, but when I attempt to Mount the drive Error mounting device 
- Unknown error msg. comes up.
Details:
Error mounting: mount: Structure needs cleaning.

Have googled it: 
http://xfs.org/index.php/XFS_FAQ#Q:_I_see_applications_returning_error_990_or_.22Structure_needs_cleaning.22.2C_what_is_wrong.3F
and tried xfs_repair /dev/sdb1 and xfs_check /dev/sdb1 and can Mount the 
disk and all the folders in root apart from few files are ok "copied 
into Lost+Found Folder", but the most important one "DVBgrab" with about 
400Gb of data :( (each file is between 1 and 2 Gb) is missing.

Are those files gone, or is there a chance that they can be somehow 
recovered with combination of xfs_repair commands?


Thanx in advance.

Marcel