'vol size' does not show correct size after shrink of snapmirror destination (done through source)

[sorenmikkelsen]

Maybe this is just in the ONTAP simulator, but after shrinking source and destination volumes (the latter through a snapmirror update) the 'vol size' on destination does not show the correct size (I followed the steps in KB29832 ), e.g. after shrinking volume testvolsrc from 110MB and a successful snapmirror update, I see:

On source: vol size testvolsrc: vol size: Flexible volume 'voltestsrc' has size 100m.

On destination: vol size testvol: vol size: Flexible volume 'voltest' has size 110m.

FilerView, df etc on destination does show the correct size in destination volume 'testvol'.

Did I overlook something - has anybody of you an idea?

Kind regards,

Soren

[fletch2007]

You need to break the snapmirror and resize the destination manually, then resync the snapmirror

that is my experience - I'd like to know if there is a better way!

[shaunjurr]

Hi,

This might seem counter-intuitive, but the sizes of the destination volume for volume snapmirror will always "look" the same if the destination is of equal size (+ a few MB) or larger, no matter what the actual size is.  You need to use vol size -b (if I remember correctly) to get the actual size of the destination volume.  You can always resize the destination volume manually, but if you go below the source volume size (or adjust the source to be larger than the destination) the mirror won't update.  So if you want to adjust the test volume down a bit, then just 'vol size testvol 112m' and you're done.

[fletch2007]

Its vol status -b

Volume              Block Size (bytes)  Vol Size (blocks)   FS Size (blocks)  
------              ------------------  ------------------  ----------------  
vol0                4096                25952256            25952256          
net2                 4096                684510413           590558004         
sg12                 4096                8912896             8650752           
web2               4096                14417920            13107200          
backup1            4096                5242880             3932160           
data               4096                15204352            14417920          
vm2                4096                667942912           563714458         
archive            4096                418906112           402653184         
65net              4096                275251200           251658240         
fcappdata           4096                18350080            14417920          
appdata             4096                367001600           348966093         
net5                4096                216006656           183500800         
backup2            4096                443862221           322122548     

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