On 11/7/22 18:22, marius@xxxxxxxxxxxxxx wrote: > November 6, 2022 9:05 AM, "Damien Le Moal" <damien.lemoal@xxxxxxxxxxxxxxxxxx> wrote: > >> Can you try current mainline 6.1-rc kernel ? Not going to debug 5.15. >> Debugging should be done on the latest kernel and any bug fix backported. > > OK. I have a bootable kernel v6.1-rc3, but no rootfs yet. I load it via tftp. I built it from github.com/torvalds/linux using OpenWrt toolchain. Bootlog is attached. At 17 seconds I connect the DAS. > >>> The same router works perfectly when I connect a laptop HDD. >> >> You mean an external single HDD connected with an eSATA port ? > > Yes, to show that the hardware is not defective. So the adapter & driver are OK for regular ATA devices but they may not like port-multiplier devices, or one of its flavor. See: https://en.wikipedia.org/wiki/Port_multiplier for a nice summary. PM comes with either command-based switching or FIS-based switching. The adapter may not support the flavor that your PM box uses, while the sata-mv adapter does. > >> What kernel version is running on that older Linksys box ? > > 5.10 > >>> [--- Areca connected ---] >>> <6>[88761.966331] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl F300) >>> <6>[88761.975472] ata1.15: Port Multiplier 1.2, 0x197b:0x0325 r193, 8 ports, feat 0xf/0x1f >> >> This one seems OK with the PHY detection and it links up. Let me know the >> kernel version and we can see what changed between the older kernel and >> 5.15. But you should still try latest 6.1-rc if possible. > > I don't think there is a change in kernel. It's just a diferent driver in use: ahci-mvebu vs. sata-mv. > BTW, is sata-mv compatible with this hardware? It won't auto-load instead of ahci-mvebu if ahci-mvebu is missing. Try to check the router SATA adapter specs and your PM box spec and see what PM flavor they support. If that matches, then this is likely a driver issue. If they do not match, then nothing we can do. You will not be able to use that PM box with your router. > > Thank you for your reply. > Marius Dinu -- Damien Le Moal Western Digital Research
