I just took the SnapMirror/SnapVault class and have a note on this.  According to the instructor, at version 8.2.1, ONTAP will autogrow the destination volume
 when you grow the source volume.  I haven’t tried this to verify.  Are you running 8.2.1 (or later)?
Eric
From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net]
On Behalf Of Iluhes
Sent: Wednesday, April 09, 2014 1:06 PM
To: Toasters
Subject: snapmirror destination volume is not growing after source
Folks,
Please help 
I have snapmirror setup between 2 qtrees.
netapp1:/vol/vol1/q1  --> netapp2/vol/vol1/q1
I was under impression that in 8.2 you can add space to source volume and destination will grow. 
When I add space or change maxfile on source, the destination remains the same
Is my issue due to having just qtree snapmirror? Or I am missing something?
fs_size_fixed=off