[pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled

[Alexandre DERUMIER]

>> multicast also does not work between updated nodes. 

Just an idea, can you try to reboot your physicals switchs ?
Maybe old igmp snooping from bridge was propagated to your switchs...
(I think that igmp queries are send from linux bridge to all interfaces connected to it)


But Indeed, that's not an easy update,i'm not sure it's possible to push it by default to next kernel. 


----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Vendredi 8 Mars 2013 16:58:03 
Objet: RE: [pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled 

> What is your problem exactly ? 

Martin updated 2 clusters, and now I get strange TOTEM error - corosync does not work. 

Mar 8 14:30:23 hp1 corosync[1588]: [TOTEM ] Totem is unable to form a cluster because of an operating system or network fault. The most common cause of this message is that the local firewall is configured improperly. 

> Note that I think you need to disable igmp snooping on all nodes at the same 
> time, 
> 
> because it's possible that nodes with igmp snooping enabled won't see the nodes 
> with igmp snooping disabled. 

multicast also does not work between updated nodes.