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Old 02-13-2015, 07:51 AM   #1
tesla75
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Using parted command to create LVM partitions


Oracle Linux 6.6

To create Physical Volumes for Volume groups (LVM) , the disk need to be partitioned to LVM type ie. 'Linux LVM' type . In fdisk , this can done by choosing 8e when prompted for partition type.

Since it is easy to script (non-interactive), I use parted command rather than fdisk to create partitions


For creating standard partitions, I use the below 2 non-interactive steps in our scripts

Step1. Creating the partition table for the device

parted -s /dev/sda mklabel msdos

For gpt, I use

parted -s /dev/sda mklabel gpt

Step2. create a primary partition that starts after 1mb (to ensure proper alignement)

parted -s /dev/sda unit mib mkpart primary 1 100%



From the below link , I gathered that partition can be set to LVM type interactively using

set [partition number] lvm on

http://computernetworkingnotes.com/p...-in-linux.html

But, how can I incorporate this into step2 (non-interactive) shown above ?
How to create LVM Partition in Linux
 
Old 02-13-2015, 07:43 PM   #2
syg00
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Why not a step 3 ?.

And more to the point, why are you using a partition at all ?. Simply run pvcreate against the device node - no partition needed. Save you all that apparent angst.
 
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Old 02-14-2015, 03:05 AM   #3
veerain
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Quote:
Originally Posted by tesla75 View Post
Step2. create a primary partition that starts after 1mb (to ensure proper alignement)
parted -s /dev/sda unit mib mkpart primary 1 100%
Did you see output of running 'parted --help'.

You can use:

Code:
parted -s /dev/sda set 1 lvm on
Set 1 to your partition number. It works non-interactively also.

Last edited by veerain; 02-14-2015 at 03:06 AM.
 
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