I just migrated from Isilon to NetApp and I notice from a Linux 5.7 host, it used to have much larger rsize/wsize (128k/512k) but now has 64k/64k when mounted onto NetApp.Nothing changed on the Linux side so I believe the sizes are negotiated.
1. What's the maximun values NetApp support?
2. If I manually specify larger values on Linux, is it correct it will negotiate to the max values when it reconnects?
Solved! See The Solution
TR-4067 covers the max rsize/wsize on page 16.
Max xfer size is 1MB. The server defaults to 64k. You'd have to change the option on the server to get larger write and read sizes.