I have checked the logs. System has been working for a month then suddenly they could not see the drive on network. It is a linux file server with a virtual windows on top of it ... Virtual windows has the virtio drive of 12*10 TB Disks shared over network...
The error on windows is : you should format this disk. The error on linux is : mount syscall cannot be ... ,structure needs cleaning.
When I peek to drive via gparted I only see an ext partition cannot see ntfs partition in md0 it should contain an ntfs partition createn in virtual windows.