[Pacemaker] Multicast pitfalls? corosync [TOTEM ] Retransmit List:

[Stefan Bauer]

you have to disable all offloading features (rx, tx, tso...)

Mit freundlichen Grüßen

Stefan Bauer
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GF Stefan Bauer

Am 14.02.2014 um 09:40 schrieb "Beo Banks" <beo.banks at googlemail.com <mailto:beo.banks at googlemail.com> >:

ethtool -K eth0 tx off
ethtool -K eth1 tx off
 same result...retransmit issue


2014-02-14 9:31 GMT+01:00 Beo Banks <beo.banks at googlemail.com <mailto:beo.banks at googlemail.com> >:
i have also try 
 "No more delay when you disable multicast snooping on the host:"

echo 0 > /sys/devices/virtual/net/br1/bridge/multicast_router
echo 0 > /sys/devices/virtual/net/br1/bridge/multicast_snooping    


2014-02-14 9:28 GMT+01:00 Beo Banks <beo.banks at googlemail.com <mailto:beo.banks at googlemail.com> >:

@jan and stefan
 must i set it for both bridges 
eth1 (br1) eth0 (br0) on the host or guest ?


2014-02-14 9:06 GMT+01:00 Jan Friesse <jfriesse at redhat.com <mailto:jfriesse at redhat.com> >:

Beo,
do you experiencing cluster split? If answer is no, then you don't need to do anything. Maybe network buffer is just filled. But, if answer is yes, try reduce mtu size (netmtu in configuration) to value like 1000.

Regards,
  Honza

Beo Banks napsal(a):
Hi,

i have a fresh 2 node cluster (kvm host1 -> guest = nodeA | kvm host2 ->
guest = NodeB) and it seems to work but from time to time i have a lot of
errors like

Feb 13 13:41:04 corosync [TOTEM ] Retransmit List: 196 198 184 185 186 187
188 189 18a 18b 18c 18d 18e 18f 190 191 192 193 194 195 197 199
Feb 13 13:41:04 corosync [TOTEM ] Retransmit List: 197 199 184 185 186 187
188 189 18a 18b 18c 18d 18e 18f 190 191 192 193 194 195 196 198
Feb 13 13:41:04 corosync [TOTEM ] Retransmit List: 196 198 184 185 186 187
188 189 18a 18b 18c 18d 18e 18f 190 191 192 193 194 195 197 199
Feb 13 13:41:04 corosync [TOTEM ] Retransmit List: 197 199 184 185 186 187
188 189 18a 18b 18c 18d 18e 18f 190 191 192 193 194 195 196 198
Feb 13 13:41:04 corosync [TOTEM ] Retransmit List: 196 198 184 185 186 187
188 189 18a 18b 18c 18d 18e 18f 190 191 192 193 194 195 197 199
Feb 13 13:41:04 corosync [TOTEM ] Retransmit List: 197 199 184 185 186 187
188 189 18a 18b 18c 18d 18e 18f 190 191 192 193 194 195 196 198
i used the newest rhel 6.5 version.

i have also already try solve the issue with
echo 1 > /sys/class/net/virbr0/bridge/multicast_querier (host system)
but no chance...

i have disable iptables,selinux..same issue

how can solve it?

thanks beo



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