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I've got a Primary/Primary setup running on a simple 2-node cluster
running CentOS 5.5 x86_64. The DRBD devices are LVM LVs on either node.
The DRBD itself is, in turn, a PV which hosts a VG and a couple LVs used
in the cluster.
This all works and everything is fine. The problem is that when the
nodes boot, the DRBD-based PV (and thus it's VG and LVs) are no visible.
This is easy enough to fix by running the following on both nodes:
lvchange -a y /dev/drbd_vg0/iso_store /dev/drbd_vg0/vm01
I know the second node doesn't need to call 'lvchange'...
Anyway, my question is; How do I get LVM to automatically recognize
the DRBD-based LVM components at boot time? The reason I want to sort
this out is that I want to be able to add my GFS LV to /etc/fstab so
that the system comes up on it's own on boot (even if the other node is
Should I be asking this on the LVM mailing list? I figured it's more
appropriate here as not so many LVM users use DRBD as the other way
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