Thanks fjf!!!!
I tried today again for last chance before giving up, but this time it worked!
I test before with the comand you told me "fsck /dev/vg 1000/lv" and nothing change, but today I tried with "fsck /dev/vg1000/lv"
and then I could mount the volume and see all my data in their folders. Now I´m doing a copy of some of them to others disks (but I have not more empty disks for the rest 9 TB!!!)
I wonder if can I start the Nas with Xpenology and then all will be there, or this is working only with Linux. Till I´m not sure I make nothing, now I can see and copy all the data!!