LVM partitions on ax external USB HD

[Antonio Montagnani]

Jim Cornette wrote / ha scritto on /il 10/04/2005 14:46:

>
>>
>
> From an earlier posting someone suggested to run the following 
> commands to activate and later deactivate LVM volumes in rescue mode. 
> I used these commands on an external USB drive to get at data from a 
> previous installation and it worked. You might be able to get at your 
> data in this way.
> Jim
>
> Excerpt from earlier help.
> Once booted into text-mode rescue, invoke the following commands:
>
> lvm lvscan
> lvm vgchange -ay
>
> This will scan for all LVM volumes and then will make them active and 
> accessible.
>
> lvm vgchange -an
>
> will deactivate them all.
>
Tnx Jim

But if I am a standard user with my machine running (with LVM on it), 
and I connect an external LVM hard disk,how do I activate that 
volumes??? not in rescue mode I mean.
I suppose that if  I play with lvm vgchange -an I will break everything 
also on the running system. Is it true??

-- 
 Antonio
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