Run “vol options volname fs_size_fixed off” on the destination volume and you will then be able to shrink it.

--
Bryce Eller
Solutions Architect
Trace3

818-264-8310 (m)
949-333-1812 (f)
bryce@trace3.com
www.trace3.com

From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Fletcher Cocquyt
Sent: Friday, June 22, 2012 9:26 AM
To: toasters@teaparty.net Lists
Subject: shrinking snap mirror destination volume size does not return space

I'm teaching our storage team to use the System Manager to resize volumes (both source and destination snap mirror volumes)

Then one team member noticed this old issue - when the SM src/dest pair volumes are shrunk - the new size is not reflected on the destination - even after a SM update. 

Last year I wrote about this http://www.vmadmin.info/2011/04/shrinking-snapmirror-destination.html

and the solution at the time was to break the SM to have the destination space reclaimed.

But is there a better method?

This script shows I have volumes with space reclaimable:

ssh na01 -l root vol status -b | awk '{print $0" diff = "($3-$4)*4096/1024/1024" gb"}'
Volume              Block Size (bytes)  Vol Size (blocks)   FS Size (blocks)    
------              ------------------  ------------------  ----------------    
vol0           4096                78643200            78643200            diff = 0 gb
pweb           4096                249036800           249036800           diff = 0 gb
vm64           4096                810675078           805306368           diff = 20971.5 gb
eweb2          4096                13369344            13107200            diff = 1024 gb
sbackup2       4096                311951361           308543488           diff = 13312 gb
vds            4096                191365120           180879360           diff = 40960 gb
svm2           4096                563714458           563714458           diff = 0 gb
sarchive       4096                562141594           549034394           diff = 51200 gb
svm4           4096                629145600           603979776           diff = 98304 gb
vb2            4096                2883584             2685440             diff = 774 gb
cldb           4096                1184890880          1184104448          diff = 3072 gb
cl2            4096                1848377344          939524096           diff = 3550208 gb

thanks