>>I'd ran for mistake the command newfs
>> over a logical volume with valuable data.
OOPS! :( I've done that before!
>>There is some command or any trick for
>> get my data back, in hp-ux 11.31, with
>> vxfs ?
Yes, it's called restore from a backup.
There is no other way that I know of, unless you want to spend THOUSANDS of dollars with a data recover service, even then there is no guarantee.