Observation:
This is probably already known to most Linux & NetApp administrators, but I discovered so, and hence I am making a note of it in this article.
Steps:
1. Increased LUN size on NetApp side.
2. Ran the iscsi --rescan
3. fdisk shows - new size but, 'multipath -ll' still shows old size
4. dm-multipath which sits between kernel and block devices needs a 'bounce' to see the new size.
5. After running 'service multipathd restart' and running 'multipath -ll' showed the new size correctly.
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