Xsan extend volume problem with total free space
I have an xsan with 2 mdc (mountain lion) with 1 eclass promise and 1 jclass and 2 volumes.
Recently I need to add space and more bandwitch.
I add 1 e class and 1 j class to my fabric swicth with four lun.
I extend the first volume in my san. After that my volume is up to 32To.
The free space of the volume is wrong. I see in xsan admin 9To of free space but I have only 9To of data in my volumes.
I think the extension of volume create a mirror of my lun.
Do you confirm that ? And what si the method to expand a volume with new contrôler and more space