[linux-lvm] how to copy a snapshot, or restore snapshot without deleting it

[Zdenek Kabelac]

Dne 10. 01. 19 v 7:23 Davis, Matthew napsal(a):
> Hi Marian,
> 
> I'm trying to do it with thin snapshots now. It's all very confusing, and I can't get it to work.
> I've read a lot of the documentation about thin stuff, and it isn't clear what's happening.
> 
> I took a snapshot with
> 
>      sudo lvcreate -s --name mySnap1 centos/root
> 
> Then I copied that snapshot with
> 
>      sudo lvcreate -s --name mySnap2 centos/mySnap1
> 
> When I try to restore mySnap1 it says:
> 
>      $sudo lvconvert --merge centos/mySnap1
>      centos/mySnap1 is not a mergeable logical volume
> 

Hi

Aren't you using some quite ancient version of lvm2 ?
You need to use lvm2 which does support thin volume merging

Regards

Zdenek