[Samba] corrupt files on samba server

[initiators at free.fr]

I'd start by checking there is no problem with the server disks,
something like :
- generate a 10 GB file with random data on the server
- calculate the MD5 of the file
- copy the file
- check the MD5 of the copy is correct
Create a script doing that in loops and let it run at least a few hours.