[DRBD-user] drbd and lvm

[Kees Cook]

On Fri, Mar 19, 2004 at 10:15:33PM +0100, Lars Ellenberg wrote:
> > I would personally prefer running LVM on top of drbd.  That way you can
> > just add more drbd-protected devices and chop up the space as you see fit
> > with LVM, etc.  Much easier to deal with growing stuff.
> 
> But much harder for eventual disk failures.
> Node failure: ok, no problem.
> But if a single "PV" fails, you have to failover the full "VG".
> Ok, you could just let the node in question commit suicide for
> this, but...

Right, sorry, I didn't get into the device details.  I'm assuming that you 
either have an already protected device (either hardware raid or md), 
resulting in the following stack:

fs
lv
vg
pv
drbd
md/hardware
disks

> You need to use LVM2 for this to work.

Yup!  That's the situation so far.

-- 
Kees Cook
Open Source Development Lab
kees at osdl.org