Having shared network issues only on my proxmox host in my network where everything is bottlenecked/delayed.

[Akira1]

Been having cifs/samba and NFS issues after a shutdown of my lab a while back and I'm not sure how to diagnose it, I have tried a few commands like sync; echo 3 > /proc/sys/vm/drop_caches to free page caches but seems to still be a problem.

The system that's running this proxmox host is an old Macbook pro 2015. I'm able to access the share on all other devices on the network but this proxmox host (including the vms).

Mainly the issue im facing is the proxmox host (along with the vms) seems to have a bottleneck where, if i were to even do a df -h it takes like a few mins to load which results in an error of 'Resource temporarily unavailable'. Since I'm not able to access the mounts due to this 'delay' or 'bottleneck', my docker services cant read/write the files in the shares (or its barely able to).

 

[shrdlicka]

Is your samba share server overloaded somehow? What does iperf3 say about the connection speed?

 

[Akira1]

Is your samba share server overloaded somehow? What does iperf3 say about the connection speed?

Did an iperf3 test on the proxmox host and its vm and seems like there are network issues. But on my other devices, there seems to be no problem. I have also tried changing the ethernet usb adapter which didnt change the results.

PROXMOX HOST:


UBUNTU VM:


My Windows PC:

 

[Akira1]

I am currently trying using my windows PC as a iperf3 server and seems like there is no issues between these 2. So maybe there's just a connection issue between my Synology NAS and this proxmox host.

 

[shrdlicka]

The connection to your windows server seems a bit slow to me. Is that a 100Mbit Network interface, or something in between running only at 100Mbit/s?

 

[Akira1]

The connection to your windows server seems a bit slow to me. Is that a 100Mbit Network interface, or something in between running only at 100Mbit/s?

My current network should all be gigabit connection. I have a Cisco sg300-28pp switch, and all the cables are at least cat5e. I dont think there should be anything in between limiting it to 100Mbit/s.

 

[shrdlicka]

Try checking your link speed on the physical Linux Systems as well as the switch. You can check this in Linux via: ethtool eno1.

Alternatively, was the network interface busy with other things while you ran iperf3?

 

[Akira1]

Try checking your link speed on the physical Linux Systems as well as the switch. You can check this in Linux via: ethtool eno1.

Alternatively, was the network interface busy with other things while you ran iperf3?

This is what shows up on the proxmox host. Its the usb adapter that im using an TP-LINK TL-UE300 ethernet adapter.

 

[shrdlicka]

The USB adapter says Speed: 100Mb/s. I woudl first suggest trying another cable if it worked before.

 

[Akira1]

The USB adapter says Speed: 100Mb/s. I woudl first suggest trying another cable if it worked before.

Tried with a new cable this time instead of the previous two i used and that has made it a gigabit connection. But theres still some issues between this host and my synology NAS

Between the proxmox host and my windows pc:


Between the NAS and the proxmox host:

 

[Akira1]

just found out the reason why it didn't work, for some reason, my opnsense firewall settings got affected during the outage previously so it denied access between these two vlans.

EDIT: (Thought it was my firewall and still could be, but seems like i don't see it getting denied anymore but i still have connection issues between the two)

 

[Akira1]

Doing more tests and ran 2 vms in my Synology, one setup in my server vlan (vlan 40) and the other in my storage vlan (vlan 15).

https://imgur.com/a/owvpH1j

It seems like it's just the Synology host that cant be connected to any of the hosts on the server vlan (vlan 40) for some reason.

I did some googling and all i had to do was check the box with "enable multiple gateways" under "advanced settings" on the synology network settings