Infrastructure Software

Hello,

I have a tar file that I created that is over 19gb in size. I can open the file in File Roller and I can see the contents with tar -tvf filename.tar however, when I try to extract the files from the tar, I get no output, and the command completes with no errors and the files are not installed.
I run tar -xvf filename.tar /app to extract the files there.
I wrote the tar file with the command tar -cvf filename.tar app/ from another machine running Solaris 10 so that I can restore the files on this server without overwriting files that are already in the /app directory on the new Solaris 10 box.
I even tried running it from File Roller. It can see my archive and I can see all the files in the tar file, but when I tell it to extract, I get nothing, and it seems the program hangs, being that it hasn't changed on my screen in over 12 hours and hasn't refreshed.
I have plenty of hard drive space, being that I have a zfs share that is over 600 GB in size. The only thing that is different from the two servers is that the old one that I tarred the files to had a UFS file system and now I'm installing it on a ZFS file system. Could this be why the files won't un-tar?
And, does anyone know a way to forcibly extract the files?

Any help would be greatly appreciated.

Thanks.