Hi,
I'm currently trying create a two node redundant NFS setup on CentOS 6.4
using pacemaker and crmsh.
I use this Document as a starting poing:
https://www.suse.com/documentation/sle_ha/singlehtml/book_sleha_techguides/book_sleha_techguides.html
The first issue is that using these instructions I get the cluster up
and running but the moment I try to stop the pacemaker service on the
current master node several resources just fail and everything goes
pear-shaped.
Since the problem seems to relate to the nfs bits in the configuration I
removed these in order to get to a minimal working setup and then add
things piece by piece in order to find the source of the problem.
Now I am at a point where I basically have only
DRBD+LVM+Filesystems+IPAddr2 configured and now LVM seems to act up.
I can start the cluster and everything is fine but the moment I stop
pacemaker on the master i end up with this as a status:
===
Node nfs2: standby
Online: [ nfs1 ]
Master/Slave Set: ms_drbd_nfs [p_drbd_nfs]
Masters: [ nfs1 ]
Stopped: [ p_drbd_nfs:1 ]
Failed actions:
p_lvm_nfs_start_0 (node=nfs1, call=505, rc=1, status=complete):
unknown error
===
and in the log on nfs1 I see:
LVM(p_lvm_nfs)[7515]: 2013/03/25_12:34:21 ERROR: device-mapper: reload
ioctl on failed: Invalid argument device-mapper: reload ioctl on failed:
Invalid argument 2 logical volume(s) in volume group "nfs" now active
However a lvs in this state shows:
[root@nfs1 ~]# lvs
LV VG Attr LSize Pool Origin Data% Move Log
web1 nfs -wi------ 2,00g
web2 nfs -wi------ 2,00g
lv_root vg_nfs1.local -wi-ao--- 2,45g
lv_swap vg_nfs1.local -wi-ao--- 256,00m
So the volume group is present.
My current configuration looks like this:
node nfs1 \
attributes standby="off"
node nfs2 \
attributes standby="on"
primitive p_drbd_nfs ocf:linbit:drbd \
params drbd_resource="nfs" \
op monitor interval="15" role="Master" \
op monitor interval="30" role="Slave"
primitive p_fs_web1 ocf:heartbeat:Filesystem \
params device="/dev/nfs/web1" \
directory="/srv/nfs/web1" \
fstype="ext4" \
op monitor interval="10s"
primitive p_fs_web2 ocf:heartbeat:Filesystem \
params device="/dev/nfs/web2" \
directory="/srv/nfs/web2" \
fstype="ext4" \
op monitor interval="10s"
primitive p_ip_nfs ocf:heartbeat:IPaddr2 \
params ip="10.99.0.142" cidr_netmask="24" \
op monitor interval="30s"
primitive p_lvm_nfs ocf:heartbeat:LVM \
params volgrpname="nfs" \
op monitor interval="30s"
group g_nfs p_lvm_nfs p_fs_web1 p_fs_web2 p_ip_nfs
ms ms_drbd_nfs p_drbd_nfs \
meta master-max="1" \
master-node-max="1" \
clone-max="2" \
clone-node-max="1" \
notify="true"
colocation c_nfs_on_drbd inf: g_nfs ms_drbd_nfs:Master
property $id="cib-bootstrap-options" \
dc-version="1.1.8-7.el6-394e906" \
cluster-infrastructure="classic openais (with plugin)" \
expected-quorum-votes="2" \
stonith-enabled="false" \
no-quorum-policy="ignore" \
last-lrm-refresh="1364212090" \
maintenance-mode="false"
rsc_defaults $id="rsc_defaults-options" \
resource-stickiness="100"
Any ideas why this isn't working?
Regards,
Dennis
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