Hi Sanjay,
Depending on whether you're using dedicated nics for storage traffic types or
using management nics to also carry storage network, you can configure the nics
with specified MTU.
For example, in my KVM based env I've cloudbr0 to carry Public and Guest
traffic (at 1G speed) but use cloudbr1 for both management & storage traffic
(at 10G speeds) and they use MTU 9000. As an illustration the following netplan
configuration has eth0 and enp1s0f1 which are 10G nics of a 10G X540-AT2 PCIE
card on the host and are part of cloudbr1 with 9000 MTU:
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: false
dhcp6: false
optional: true
en112s0:
dhcp4: false
dhcp6: false
optional: true
eth0:
dhcp4: false
dhcp6: false
optional: true
match:
macaddress: <some mac>
set-name: eth0
mtu: 9000
enp1s0f1:
dhcp4: false
dhcp6: false
optional: true
match:
macaddress: <some mac>
set-name: enp1s0f1
mtu: 9000
bridges:
cloudbr0:
addresses: [192.168.1.10/24]
routes:
- to: default
via: 192.168.1.1
nameservers:
addresses: [192.168.1.1]
interfaces: [eno1, en112s0]
dhcp4: false
dhcp6: false
parameters:
stp: false
forward-delay: 0
cloudbr1:
addresses: [10.10.1.10/24]
interfaces: [eth0, enp1s0f1]
dhcp4: false
dhcp6: false
mtu: 9000
parameters:
stp: false
forward-delay: 0
Regards.
________________________________
From: Sanjay Kumar <[email protected]>
Sent: Friday, May 23, 2025 17:35
To: [email protected] <[email protected]>;
[email protected] <[email protected]>
Subject: CAN BE USE MTU MORE THEN 9000 NFS AS PRIMARY WITH KVM HOST?
Hello!
We are using truenas on 1500 MTU. Can we use MTU more then 9000 as NFS
primary with KVM host?
ACS: 4.20
KVM : Ubuntu 22.04
Any help would be really appreciated.
Thank you!
