[Gluster-users] UCARP with NFS

Daniel Müller mueller at tropenklinik.de
Thu Sep 8 13:25:18 UTC 2011

working for me on centos 5.6 samba/glusterfs/ext3.
Seems to me ucarp is not configured to work master/slave:

#Real IP
#slaveconfig,OPTIONS="--shutdown --preempt  -b 1 -k 50"
OPTIONS="--shutdown --preempt  -b 1"
#Virtual IP used by ucarp
#Ucarp Password

On you slave you need: OPTIONS="--shutdown --preempt  -b 1 -k 50"

Good luck

EDV Daniel Müller

Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen 
Tel.: 07071/206-463, Fax: 07071/206-499
eMail: mueller at tropenklinik.de
Internet: www.tropenklinik.de 

Von: gluster-users-bounces at gluster.org
[mailto:gluster-users-bounces at gluster.org] Im Auftrag von anthony garnier
Gesendet: Donnerstag, 8. September 2011 15:03
An: gluster-users at gluster.org
Betreff: [Gluster-users] UCARP with NFS

Hi all,

I'm currently trying to deploy ucarp with GlusterFS, especially with nfs
Ucarp works well when I ping the VIP and i shutdown Master (and then when
the Master came back up),but I face of a problem with NFS connections.

I got a client mounted on the VIP, when the Master fall, the client switch
automaticaly on the Slave with almost no delay, it works like a charm. But
when the Master come back up, the mount point on the client freeze.
I've done a monitoring with tcpdump, when the master came up, the client
send paquets on the master but the master seems to not establish the TCP

My  volume config : 

Volume Name: hermes
Type: Replicate
Status: Started
Number of Bricks: 2
Transport-type: tcp
Brick1: ylal2950:/users/export
Brick2: ylal2960:/users/export
Options Reconfigured:
performance.cache-size: 1GB
performance.cache-refresh-timeout: 60
network.ping-timeout: 25
nfs.port: 2049

As Craig wrote previously, I well probed hosts and created the volume with
their real IP, I only used the VIP with the client.

Does anyone got experience with UCARP and GlusterFS ?


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