Am 06.03.2012 17:32, schrieb Stroller:
> 
> On 6 March 2012, at 09:45, Datty wrote:
>> … I initially want to replace the 3x1TBs with a single 3TB drive but
>> i've never removed/replaced a drive in an LVM setup before. I think I
>> understand how it is done, using pvmove … 
> 
> Or you could just format and mount the new drive and use `cp`.
> 
> Stroller.
> 

+1

If you still want to work on LVM, you can use lvconvert to mirror your
old volume on the new disk and then remove the old disks. The creation
of the mirror should be inherently secure. pvmove should be safe, too. I
know pvmove once crashed for me (old kernel bug, years ago) and I didn't
loose data.

# create mirror, report progress every 10 seconds
lvconvert --interval 10 -m1 vg00/lvol1 /dev/new_disk

# detach mirror, creates snapshot
lvconvert -m0 vg00/lvol1

Disclaimer: Untested

Regards,
Florian Philipp