ah well i got it working in the end. i tried backporting some dsa stuff from 5.7 but then i couldn't set the MTU at all...some missing op definitions i think that 5.4 must bypass or uses defaults for.
anyway, the qca8k driver does not enable jumbo frames during initialization (which the old AR8327 driver does). i patched the qca8k driver and now the 'old' MTU override from UCI works.
can you tell me what you patched... i can try to propose them upstream if they are not too hacky... also i read somewhere that the mtu was changeable but i think that this feature got dropped in the dsa driver
that's it. i don't think the 5.7 dsa stuff is needed for now. on master (with DSA) you could already set the wan MTU, but i think the cpu port MTU wasn't being set because jumbo frames weren't enabled, so then the packets got lost.
@Ansuel with DSA, did you ever see disconnected (as in physically disconnected) ports wake up randomly for a second? this has happened a few times:
Sat Jul 18 09:40:54 2020 kern.info kernel: [120804.922489] br-lan: port 1(lan1) entered blocking state
Sat Jul 18 09:40:54 2020 kern.info kernel: [120804.930028] br-lan: port 1(lan1) entered forwarding state
Sat Jul 18 09:40:54 2020 daemon.notice netifd: Network device 'lan1' link is up
Sat Jul 18 09:40:55 2020 daemon.notice netifd: Network device 'lan1' link is down
Sat Jul 18 09:40:55 2020 kern.info kernel: [120805.942170] qca8k 37000000.mdio-mii:16 lan1: Link is Down
Sat Jul 18 09:40:55 2020 kern.info kernel: [120805.942286] br-lan: port 1(lan1) entered disabled state
Hello!
I'm wondering what performance I could achieve with R7800 and USB3 vs eSata?
Has anyone tested it with a performant multi-HDD RAID enclosure by any chance and could share results?
There are USB-powered esata cables like SATA 22Pin to eSATA Data USB Powered cable.
I bought esata with power cable and just cut power line and solder USB plug, works with old 2.5" HDD.
i know but i hate the fact that i have to connect 2 cable for one hard driver + add the fact that usb port is at the opposite side of the esata port and doesn't worth it.
Two options: USB charger or solder cables inside router I have power strip next to router so charger was no problem
I thought also about soldering dual voltage power adapter but my last old 3.5" HDD went to the heaven of happy bits
Connector probably doesn't have any contacts for power - externally looks different inside than in laptop esata port but I thought about just trace power lines from esata cable (or make a kind of connector on it like USB plug) through holes into router