After installing the cluster stuff (GFS), lvscan and lvdisplay stopped working with the following error:
[uphill@zürich]: lvscan
connect() failed on local socket: Connection refused
Locking type 2 initialisation failed.
It's trying to talk to the cluster manager, but I haven't set that up yet, I still need my groups though, so I had to turn off the cluster aware bit.
[root@zürich]# lvmconf --disable-cluster
[uphill@zürich]: lvscan
inactive '/dev/vol0/data' [350.00 GB] normal
inactive '/dev/vol0/disk' [500.00 GB] normal
Ok, not lvm decided to inactivate my groups, no worries
[root@zürich ]# vgchange -a n
0 logical volume(s) in volume group "vol0" now active
[uphill@zürich ]# lvscan
inactive '/dev/vol0/data' [350.00 GB] normal
inactive '/dev/vol0/disk' [500.00 GB] normal
[root@zürich ]# vgchange -a y
2 logical volume(s) in volume group "vol0" now active
[uphill@zürich ]# lvscan
ACTIVE '/dev/vol0/data' [350.00 GB] normal
ACTIVE '/dev/vol0/disk' [500.00 GB] normal
[root@zürich ]# mount /dev/vol0/data /data
[root@zürich ]#
When you have your cluster stuff going and you want lvm to show the cluster again, turn it back on with this:
[root@zürich ]# lvmconf --enable-cluster --lockinglibdir /usr/lib
