Network bonding: primary interface

[Helmonder]

I just added a mellanox sfp+ interface and gbic to both my pc and my unraid server. Both are connected to a Mikrotik 10gig switch.

 

The whole systems functions and I do have an increased transfer speed.

 

However... I used to have an active-backup bond as network connection, this used to be 2 1gig utp network connections and things were fine.

 

Initially I changed the bond and interface assignment to have the 10gig mellanox as eth0 with eth3 (the old primary utp 1gig) in the bond.

 

When I set it up like that my transfer speeds seem to be limited by the speed of eth3..

 

I solved this for now by removing eth3 from the bond (having a bond now with only eth0 in it), this works and gives a big increase in transfer speed.

 

Ofcourse I would like to get my bond back.. Is there some way of making this work with the 10gig beiing the primary link that is allways used and the 1 gig only used when the 10gig fails ?

[Helmonder]

Anyone ?

[bonienl]

Check the current active interface

cat /sys/class/net/bond0/bonding/active_slave

Change the current active interface

echo eth0 > /sys/class/net/bond0/bonding/active_slave

 

[lbouriez]

This is great and works but is there a way to always force an interface as active one ?
I have a 2.5gpbs interface and one 1gpbs, I would prefer Unraid to use by default the fastest one