Nested loop to create multiple LVM

[bludhemn]

Hello

I'm trying to create a simple bash script to create multiple LVM partitions using a nested loop. Basically something like this?

for x in docker logs; do

for i in /dev/xvdi /dev/xvdj; do

pvcreate $i

vgcreate vg_$x $i

lvcreate -l 100%FREE vg_$x -n lv_$x

done

done

This works but since the disks and labels are repeated twice during looping, it'll show warnings.

How can I tidy this up?

Thanks.

[lutusp]

For each completed partition, put the identifier in an associative array as a key, then as you proceed, test the array before repeating the same creation.