[linux-lvm] logical "and" connection of lvm-tags?

[Peter Rajnoha]

On 08/13/2017 09:44 AM, Oliver Rath wrote:
> Hi list,
> 
> Im playing around with lvm-Tags and would find it quite useful for
> sorting lvms.
> 
> Now I tried the following
> 
> root at w541:~# lvchange --addtag @foo levg/t1
>   Logical volume levg/t1 changed.
> root at w541:~# lvchange --addtag @foo levg/t3
>   Logical volume levg/t3 changed.
> root at w541:~# lvchange --addtag @bar levg/t2
>   Logical volume levg/t2 changed.
> root at w541:~# lvchange --addtag @bar levg/t3
>   Logical volume levg/t3 changed.
> root at w541:~# lvs -o lv_name @foo
>   LV 
>   t1 
>   t3 
> root at w541:~# lvs -o lv_name @bar
>   LV 
>   t2 
>   t3 
> root at w541:~# lvs -o lv_name @foo @bar
>   LV 
>   t1 
>   t2 
>   t3 
> root at w541:~# lvs -o lv_name @foo \& @bar
>   LV 
>   t1 
>   t2 
>   t3 
> root at w541:~# lvs -o lv_name @foo and @bar
>   LV 
>   t1 
>   t2 
>   t3 
> 
> You see, i want to list all lvms which have @foo *and* @bar tags
> included. Is this possible? I didnt found anything about combining in
> the man pages.

Hi,

you can use -S|--select option:

  lvs -o lv_name -S 'tags=[foo,bar]'

See also "man 7 lvmreport" and the "Selection" section there for more
info, there also a help on how to use selection with string lists.

-- 
Peter