LUN Reconfigure

[RParker]

I know this is dangerous, but my Lun is much smaller than the Volume. Also my used space within the LUN is only 50%.

I have an 800g LUN, on a 1.7 TB Volume, so I want to reduce the size of both so I am not wasting space.

I want to know if this is prudent (even though risky) to even attempt.

I get this message:

"Size Update: Reducing the size of a LUN may

result in data corruption. Use 'lun resize'

on the command line to reduce the size of the LUN."

But I did some reading and according to the Netapp Documentation and other things I have read, data corruption is only an issue when the disk space get's low.

I didn't setup the LUN with space guarantee (which is what started all this) and I want to fix it. So I figure if I make the LUN closer to the actual usage, I should be fine.

Is this a true statement? Or do I have to basically scrap the LUN and start over?

I basically want to create the LUN as 800G, set the space to reserved, and then recreate another LUN on the same Volume.

[interserve]

if you reduce the lun size from the netapp you will corrupt your vmfs file system

if the lun is not space reserved and your using data ontap from version 7 or newer and if your volume is flexible that you can reduce the volume size up to 800gb

but if all you want is to use space reservation for your lun i believe that this can be done from your netapp

try to search in now website

[interserve]

ok i did the search for you

lun set reservation lun_path \[ enable | disable ]

Enables or disables the space reservation on the LUN. If no arguments are supplied after the lun_path, then the space reservation status of the given lun_path is displayed

i'm curious to know how do you plan to take consistent snapshot of the lun ?