Compression is not enabled after transition from Data ONTAP 7.3.x
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If you transition a 32-bit volume on a system running Data ONTAP 7.3.x to an ONTAP volume that is in a 64-bit aggregate, compression is not enabled on the ONTAP volume after the transition. Compression cannot be enabled until the volume is upgraded from 32-bit to 64-bit.
Wait for the upgrade to finish.
You can use the
volume show -fields block-type -volume vol_namecommand to verify that the block type of the volume changes to 64-bit.
Enable compression by using the
volume efficiency modifycommand.