about mtu?
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.
i created a PR:
@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
I would like to promote a poll here, not completely serious but also not completly worthless, at least I hope.
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?
esata will perform better for sure... usb3 has lots of overhead compared to esata
Thanks @Ansuel
I am simply wondering how close to the theoretical maximums I could get (5Gbit for USB3 and 6Gbit for eSata)?
That is funny 
I read references here on the forum about 20..40 Mbps for USB3. Maybe more, but well under 100Mbps. Just do a search.
Not even 100mbps for usb3
Think esata is much better but never tried since it doesn't have power
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 
I think that power esata is a different connector than the one on r7800 so someone need to desolder it and add the right one
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 
I heard from some people they are getting 90MB/s from a disk enclosure with a single disk so maybe it is down to used HDD and enclosure? So not sure if this is a HDD/enclosure limitation or USB in R7800?
Still wondering is anyone tested it with fast HDDs idealy with a RAID5?
Got 20 MB/s using RAID1
and sadly 6.6MB/s with RAID5
Usb or esata?
USB 3 (all disks on the same port with external power supply)