Bug#702274: lvm2: Start nested LVM Groups

[Alasdair G Kergon]

On Mon, Mar 04, 2013 at 06:26:32PM -0500, Daniel Dickinson wrote:
> However, it seems that /dev/<vg> is not created for the nested volume
> group by the /etc/init.d/lvm2 initscript, and the nested volume group is
> not started on boot.
> 
> A second vgscan / vgchange -ay starts it.
 
The upstream uevent-driven activation upstream should address that:

  New block dev -> uevent -> pvscan the new device -> activation of LV
containing PV -> new LV block dev containing that PV -> uevent ->pvscan
new PV -> ...

(see lvchange -aay and activation/auto_activation_volume_list in lvm.conf)

Alasdair