[PVE-User] Adding a cluster node breaks whole cluster

Bart Lageweg | Bizway bart at bizway.nl
Tue Apr 14 11:05:47 CEST 2015


Error is not lan, but kernel modules -> reboot node and its fixed


Van: pve-user [mailto:pve-user-bounces at pve.proxmox.com] Namens Sten Aus
Verzonden: dinsdag 14 april 2015 11:02
Aan: Dietmar Maurer; mir at miras.org
CC: pve-user at pve.proxmox.com
Onderwerp: Re: [PVE-User] Adding a cluster node breaks whole cluster

9000 MTU is based only on storage VLANs, which use 10G interfaces.

All Proxmox cluster communication uses VLAN15, MTU1500.

Rebooted Linksys switch, no good. Swapped to another dumb switch without VLANs - again no good.

cman restart in one node
service cman restart
Stopping cluster:
   Stopping dlm_controld... [  OK  ]
   Stopping fenced... [  OK  ]
   Stopping cman... [  OK  ]
   Unloading kernel modules... [  OK  ]
   Unmounting configfs... [  OK  ]
Starting cluster:
   Checking if cluster has been disabled at boot... [  OK  ]
   Checking Network Manager... [  OK  ]
   Global setup... [  OK  ]
   Loading kernel modules... ERROR: could not insert 'configfs': Exec format error
On 14.04.15 11:58, Dietmar Maurer wrote:

As I told you, we used dumb Linksys switch for cluster communication and

it all worked for weekend and yesterday. And yesterday evening whole

cluster is red again

Yesterday's log: http://pastebin.com/sLpnGgeS

Pure corosync log: http://pastebin.com/TzyUdYaJ

Maybe a problem with packet fragmentation. Do you use special MTU sizes?

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