Hello,

The server I'm working on has two 16TB virtual disks (raid10) and one 4TB virtual disk (raid10 too). I already formated two disks to ext3 (one 16TB and 4TB). I have one 16TB UFS file system which I can mount read only in linux but only able to access first 3 folders (containing 6TB of data). The other 3 folders (about another 6TB of data) I cannot access or see them except if I navigate with mc and there is a question mark in front of each one.

Is there's a limit of readable UFS data under linux?

I'm mounting using this command:

mount -r -t ufs -o ufstype=ufs2 /dev/sda1 /home/ufsdisk

The next thing I'm thinking is to use vmware in linux and add the UFS partition inside vmware in freenas and transfer files from there. (in free nas I can access all folders)

Can it be done?

I would say why change? Freenas is based on Unix/BSD so I guess this is why you have this ufs format?

I think I'd go with a native ext3/4 or other linux native filesystem instead. It would allow you some more maintenance tools.

There used to be a lot of issues with unix file system support in linux but I'd guess that a modern 64 bit OS could support it but there are some problems still. Better to copy over in some bsd based to some native format.

That's my plan to format to ext3. But there's still the problem of the existing 12TB of data on the UFS partition and I have problems reading that data under Linux. In freenas it reads just fine.