michael.osullivan@xxxxxxxxxxxxxx wrote:
> Hi again,
>
> The output of pvs and vgs on the node where I created the volume group are:
>
> [root@croi-01 ~]# pvs
> PV VG Fmt Attr PSize PFree
> /dev/iscsi_raid iscsi_raid_vg lvm2 a- 19.07G 19.07G
> /dev/sda2 VolGroup00 lvm2 a- 37.16G 0
> [root@croi-01 ~]# vgs
> VG #PV #LV #SN Attr VSize VFree
> VolGroup00 1 2 0 wz--n- 37.16G 0
> iscsi_raid_vg 1 0 0 wz--nc 19.07G 19.07G
> [root@croi-01 ~]#
>
> On the other node they are
>
> [root@croi-02 ~]# pvs
> PV VG Fmt Attr PSize PFree
> /dev/sda2 VolGroup00 lvm2 a- 37.16G 0
> [root@croi-02 ~]# vgs
> VG #PV #LV #SN Attr VSize VFree
> VolGroup00 1 2 0 wz--n- 37.16G 0
> [root@croi-02 ~]#
>
> No errors are apparent in /var/log/messages...
So the important thing there is that /dev/iscsi_raid is not visible (to
LVM) on croi-02. Without that, the VG that resides on it is not going to
be available to it.
Make sure that iscsi_raid is actually available on that node (not just
visible, but accessible) and also that it is not excluded by some filter
in /etc/lvm/lvm.conf. Running vgscan will reload the filters and
re-create the cache file /etc/lvm/.cache. That latter file shows which
devices LVM will scan.
If you're sure that the device is available and not filtered out then
pvscan --config 'global {locking_type=0}' -vvvvvv
and see if you can see in that (long and involved) log file why the
device is not being used.
Chrissie
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