[Linux-cluster] NFS locks and failing over services

[Terry]

Hello,

I am running an NFS cluster with 3 exports distributed across 2 nodes.
 When I try to relocate an NFS export, it fails.  I then have to disable
and enable it on the other node.  Does anyone have any tricks to get around
this issue?  I am sure it is due to file locking.  Here's the config:

*<?xml version="1.0" ?>*

*<cluster config_version="17" name="omadvnfs01">*

*        <cman expected_votes="1" two_node="1"/>*

*        <clusternodes>*

*                <clusternode name="omadvnfs01a.sec.jel.lc" nodeid="1"
votes="1">*

*                        <fence>*

*                                <method name="drac">*

*                                        <device name="omadvnfs01a-drac"/>*

*                                </method>*

*                        </fence>*

*                </clusternode>*

*                <clusternode name="omadvnfs01b.sec.jel.lc" nodeid="2"
votes="1">*

*                        <fence>*

*                                <method name="drac">*

*                                        <device name="omadvnfs01b-drac"/>*

*                                </method>*

*                        </fence>*

*                </clusternode>*

*        </clusternodes>*

*        <rm>*

*                <failoverdomains>*

*                        <failoverdomain name="fd_omadvnfs01a" ordered="1"
restricted="0" nofailback="1">*

*                                <failoverdomainnode name="
omadvnfs01a.sec.jel.lc" priority="1"/>*

*                                <failoverdomainnode name="
omadvnfs01b.sec.jel.lc" priority="2"/>*

*                        </failoverdomain>*

*                        <failoverdomain name="fd_omadvnfs01b" ordered="1"
restricted="0" nofailback="1">*

*                                <failoverdomainnode name="
omadvnfs01b.sec.jel.lc" priority="1"/>*

*                                <failoverdomainnode name="
omadvnfs01a.sec.jel.lc" priority="2"/>*

*                        </failoverdomain>*

*                </failoverdomains>*

*                <resources>*

*                        <ip address="10.198.1.112" monitor_link="1"/>*

*                        <ip address="10.198.1.113" monitor_link="1"/>*

*                        <ip address="10.198.1.114" monitor_link="1"/>*

*                        <ip address="10.198.1.115" monitor_link="1"/>*

*                        <fs device="/dev/vg_data01a/lv_data01a"
quick_status="0" force_fsck="0" force_unmount="1" fsid="27014"
fstype="ext4" mountpoint="/data01a" name="omadvnfs01-data01a"
options="rw,noatime,nodiratime,data=writeback,commit=30,_netdev"
self_fence="0" nfslock="1"/>*

*                        <fs device="/dev/vg_data01b/lv_data01b"
quick_status="0" force_fsck="0" force_unmount="1" fsid="39436"
fstype="ext4" mountpoint="/data01b" name="omadvnfs01-data01b"
options="rw,noatime,nodiratime,data=writeback,commit=30,_netdev"
self_fence="0" nfslock="1"/>*

*                        <fs device="/dev/vg_data01c/lv_data01c"
quick_status="0" force_fsck="0" force_unmount="1" fsid="99243"
fstype="ext4" mountpoint="/data01c" name="omadvnfs01-data01c"
options="rw,noatime,nodiratime,data=writeback,commit=30,_netdev"
self_fence="0" nfslock="1"/>*

*                        <fs device="/dev/vg_data04/lv_data04"
quick_status="0" force_fsck="0" force_unmount="1" fsid="59016"
fstype="ext4" mountpoint="/data04" name="omadvnfs01-data04"
options="defaults,_netdev" self_fence="0"/>*

*                        <script file="/etc/init.d/postgresql"
name="postgresql"/>*

*                        <nfsexport name="data01a"/>*

*                        <nfsexport name="data01b"/>*

*                        <nfsexport name="data01c"/>*

*                        <nfsclient allow_recover="1" name="omadvdss01a"
options="async,no_root_squash,rw,no_subtree_check" target="omadvdss01a"/>*

*                        <nfsclient allow_recover="1" name="omadvdss01b"
options="async,no_root_squash,rw,no_subtree_check" target="omadvdss01b"/>*

*                        <nfsclient allow_recover="1" name="omadvdss01c"
options="async,no_root_squash,rw,no_subtree_check" target="omadvdss01c"/>*

*                </resources>*

*                <service autostart="1" domain="fd_omadvnfs01b"
name="postgresql">*

*                        <ip ref="10.198.1.112"/>*

*                        <fs ref="omadvnfs01-data04"/>*

*                        <script ref="postgresql"/>*

*                </service>*

*                <service domain="fd_omadvnfs01a"
name="omadvnfs01-nfs-data01a" nfslock="1" recovery="relocate">*

*                        <ip ref="10.198.1.113"/>*

*                        <fs ref="omadvnfs01-data01a">*

*                                <nfsexport ref="data01a">*

*                                        <nfsclient ref="omadvdss01a"/>*

*                                        <nfsclient ref="omadvdss01b"/>*

*                                        <nfsclient ref="omadvdss01c"/>*

*                                </nfsexport>*

*                        </fs>*

*                </service>*

*                <service domain="fd_omadvnfs01a"
name="omadvnfs01-nfs-data01b" nfslock="1" recovery="relocate">*

*                        <ip ref="10.198.1.114"/>*

*                        <fs ref="omadvnfs01-data01b">*

*                                <nfsexport ref="data01b">*

*                                        <nfsclient ref="omadvdss01a"/>*

*                                        <nfsclient ref="omadvdss01b"/>*

*                                        <nfsclient ref="omadvdss01c"/>*

*                                </nfsexport>*

*                        </fs>*

*                </service>*

*                <service domain="fd_omadvnfs01b"
name="omadvnfs01-nfs-data01c" nfslock="1" recovery="relocate">*

*                        <ip ref="10.198.1.115"/>*

*                        <fs ref="omadvnfs01-data01c">*

*                                <nfsexport ref="data01c">*

*                                        <nfsclient ref="omadvdss01a"/>*

*                                        <nfsclient ref="omadvdss01b"/>*

*                                        <nfsclient ref="omadvdss01c"/>*

*                                </nfsexport>*

*                        </fs>*

*                </service>*

*        </rm>*

*</cluster>*
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