Oh this is fascinating. iX obviously didn’t invent SMB-multichannel, LACP, Debian or Linux, so they’re working with what these technologies can offer. But @e7balt like you, we have a topology that appears to benefit from possible LACP+multichannel, and suffer from only being able to have 1.
In our case it’s dual stacked core switches, single-link clients, and dual-linked TrueNAS server. The server uses 2x100Gb, the clients 1x25Gb, and enabling SMB-multichannel really helps with client performance. I couldn’t figure out if it’s the Linux kernel NIC driver, needing $40K switches instead of $6K ones, or inherent bottlenecks in TrueNAS and Windows11 (it wasn’t CPU); but no amount of tuning helped other than enabling SMB-multichannel.
Posted about it here.
I’ll give it a try and see if it works for our use case. At least until Samba implements SMB Direct…