auto-activating iSCSI device with an LVM volume group

Hi,

I've been trying to find the proper piece of documentation that explains
why an iSCSI device I have access to is not activated automatically at
boot time.  Access to the device is via open-iscsi package, and the
device is perfectly accessible once it is manually activated using
GParted.  The device holds a single LVM physical volume containing a
single logical volume group, onto which an ext4 file system has been
created.  I can mount and use this file system without problems.
However, I don't understand why the physical volume is not automatically
activated at boot time, which means I have to manually do it in GParted,
and then mount the file system available in the LVM.  How can these
steps be automated at boot time?

Cheers,

-- 
Seb