howto mount another lvm partition on this one

[Derek Broughton]

Paul S wrote:

> I have a gutsy installation with the /root as volg1-lvroot and swap as
> volg1-lvswap on the one partition, sda10.
> 
> I also have a 64 bit install on another partition, sda8, with the same
> designations (/root as volg1-lvroot and swap as volg1-lvswap).
> 
> I tried mounting the 32 bit partition on the 64 bit and just get an
> error message:
> 
> paul :~$ sudo mount /dev/mapper/sda10 /media/sda10
> mount: unknown filesystem type 'LVM2_member'
> 
> same result if I try the reverse:
> 
> paul :~$ sudo mount /dev/mapper/sda8 /media/sda8
> mount: unknown filesystem type 'LVM2_member'
> 
> What's the correct procedure to mount it?  I did a quick read of "man
> mount" but see nothing specific about lvm.  Also, in the  lvm-howto, I
> don't see anything about mounting other partitions that have lvm on them.

it would need one of the "lv*" commands, I expect.  Your lv manager doesn't
know anything about the volume group used by the other install, so you need
to add it on _this_ system.
-- 
derek