Copy partitions and correct partition size and empty space

Copied partition sda 11 (30 gb) to a bigger partition sda15 (43gb), both are ext4
using

#dd if=/dev/sda11 of=/dev/sda15

You have to be patient because dd soesn't give feedback until finished whict took me nearly 56 minutes.

Using sdd -t if=/dev/sda11 of=/dev/sda15 will report total time and show progress.

The bigger partition sda15 is shown with the size of sda11.

Gparted shows the partition with the right total size.
But used 33.75 gb and unused 9.34 gb which is not correct.
The file managers show wrong total size (that of sda11) and the wrong free space too.

I did this:

Solution

After shrinking the partition with gparted with 1 gb and then resizing it to its original size the problem is solved and the right information is there for the filemanagers and gparted: 42.4 gb total size and 20.1 gb free.

But the better and easier solution is :

After using dd to clone smaller partition to larger partition:
Run in root term:

resize2fs /dev/sda15

Thanks Kruppt

see: http://bbs.archbang.org/viewtopic.php?pid=6320#p6320