Hi
We are currently trying to set up a HA NFS Sever (CS4u4, active/active). As
decribed in Cookbook we use "managed nfs service" fonctionnality with ext3 FS
type. During failover process (relocate command) we have the following problem :
On server side everything seems to be OK (exports, IP, mount points), but on
the client side time before ressource is back may last from 3 and 20 min
(apparently stalled in "rpc_execute"). Are they any specifics options to use in
that case (NFS,ext3)?, or a well-known issue on that kernel ?
cluster.conf
<resources>
<fs device="/dev/sdd" force_unmount="1" fstype="ext3"
mountpoint="/tstha" name="nfsha" options=""/>
<nfsexport name="nfsexport1"/>
<nfsclient name="nfsclient1" target="182.20.10.68"
options="rw,no_root_squash,fsid=7"/>
<fs device="/dev/sde" force_unmount="1" fstype="ext3"
mountpoint="/tstha1" name="nfsha1" options=""/>
<nfsexport name="nfsexport2"/>
<nfsclient name="nfsclient2" target="182.20.10.68"
options="rw,no_root_squash,fsid=8"/>
</resources>
<service domain="NFSHA1" name="nfs_service1" autostart="1"
checkinterval="60">
<ip address="182.20.10.76" monitor_link="1"/>
<fs ref="nfsha">
<nfsexport name="nfsha">
<nfsclient ref="nfsclient1"/>
</nfsexport>
</fs>
</service>
<service domain="NFSHA2" name="nfs_service2" autostart="1"
checkinterval="60">
<ip address="182.20.10.77" monitor_link="1"/>
<fs ref="nfsha1">
<nfsexport name="nfsha1">
<nfsclient ref="nfsclient2"/>
</nfsexport>
</fs>
</service>
on the client side:
[root@xena8 ~]# ps -ef |grep df
root 85 10 0 Nov27 ? 00:00:00 [pdflush]
root 86 10 0 Nov27 ? 00:00:00 [pdflush]
root 3723 1 0 Nov27 ? 00:00:00 xinetd -stayalive -pidfile
/var/run/xinetd.pid
root 31614 31262 0 10:55 pts/4 00:00:00 df
root 31648 28448 0 10:56 pts/2 00:00:00 grep df
[root@xena8 ~]# cat /proc/31614/wchan
__rpc_execute[root@xena8 ~]# umount /tstha
umount: /tstha: device is busy
umount: /tstha: device is busy
Thanks for help.
Regards
Alain Moullé
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