[ds220+]link down after running some time

[romberli]

Description of the problem

Description of the problem

I've successfully installed the driver, and at the beginning, it runs perfectly.
but I found that after some time(may be hours), the link suddenly went down,
and I cann't open the web manager page or ping the ip address.
It becomes normal by rebooting the NAS, but won't last for a long time.
btw, I didnot reboot the NAS yet as the current log information may help on the troubleshooting,
I'm using regular 1000Mbps ethernet now.
If you need, I can reboot and re-collect the log

Description of your products

DS220+
Linux DS220plus 4.4.180+ #42661 SMP Fri Apr 1 15:33:03 CST 2022 x86_64 GNU/Linux synology_geminilake_220+
DSM 7.1-42661 Update 1
samzhe ug25 with RTL8156B chip

Description of your environment

AX86U
CAT6

Output of dmesg command

dmesg.log

Output of lsusb command

|__usb1          1d6b:0002:0404 09  2.00  480MBit/s 0mA 1IF  (Linux 4.4.180+ xhci-hcd xHCI Host Controller 0000:00:15.0) hub
  |__1-4         f400:f400:0100 00  2.00  480MBit/s 200mA 1IF  (Synology DiskStation 6500257918EF6021)
|__usb2          1d6b:0003:0404 09  3.00 5000MBit/s 0mA 1IF  (Linux 4.4.180+ xhci-hcd xHCI Host Controller 0000:00:15.0) hub
  |__2-2         0bda:8156:3100 00  3.20 5000MBit/s 256mA 1IF  (Realtek USB 10/100/1G/2.5G LAN 001000001)

Output of ifconfig -a command

root@DS220plus:~# ifconfig -a
bond0     Link encap:Ethernet  HWaddr 90:09:D0:1F:E2:65  
          inet addr:192.168.3.6  Bcast:192.168.3.255  Mask:255.255.255.0
          inet6 addr: fe80::9209:d0ff:fe1f:e265/64 Scope:Link
          inet6 addr: 240e:388:9f22:6a00:9209:d0ff:fe1f:e265/64 Scope:Global
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:287073 errors:0 dropped:0 overruns:0 frame:0
          TX packets:670234 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:33499706 (31.9 MiB)  TX bytes:982602190 (937.0 MiB)

docker0   Link encap:Ethernet  HWaddr 02:42:66:B8:92:15  
          inet addr:172.17.0.1  Bcast:172.17.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth0      Link encap:Ethernet  HWaddr 90:09:D0:1F:E2:65  
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:287073 errors:0 dropped:0 overruns:0 frame:0
          TX packets:670234 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:33499706 (31.9 MiB)  TX bytes:982602190 (937.0 MiB)
          Interrupt:84 base 0xe000  

eth1      Link encap:Ethernet  HWaddr 90:09:D0:1F:E2:66  
          UP BROADCAST SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:85 base 0xc000  

eth2      Link encap:Ethernet  HWaddr 00:E0:4C:68:00:26  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:473935 errors:0 dropped:0 overruns:0 frame:0
          TX packets:473935 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:88832719 (84.7 MiB)  TX bytes:88832719 (84.7 MiB)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

[Robo210]

I've been having the same problem after updating to DSM 7.1-42661 Update 2. After a week or so of uptime the device (UGREEN USB C to 2.5G Ethernet Adapter) goes down and I need to restart the Synology (DS1621+ (v1000)) to get it working again. Under DSM 7.0 it was perfectly stable.

[bb-qq]

Could you try this command?:sudo sysctl -w vm.min_free_kbytes=524288
One user reported that this setting eliminated the instability that began with DSM 7.1.

[Robo210]

I'm not sure what has changed (something in update 3?), but the instability seems to be gone without needing to run that command. I've had 25 days of uptime without a problem.

If it returns, I will run the command and report back.

[bb-qq]

I would like to close this issue as no problems seem to have occurred since then.