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Full Discussion: Using parted command to create LVM partitions
Top Forums UNIX for Dummies Questions & Answers Using parted command to create LVM partitions Post 302935017 by John K on Thursday 12th of February 2015 11:17:12 AM
Old 02-12-2015
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
Code:
parted -s  /dev/sda  mklabel msdos

For gpt, I use
Code:
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
But, how can I incorporate this into step2 (non-interactive) shown above ?
How to create LVM Partition in Linux
 

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LEARN ABOUT MOJAVE

lvscan

LVSCAN(8)                                                     System Manager's Manual                                                    LVSCAN(8)

NAME

       lvscan - scan (all disks) for Logical Volumes

SYNOPSIS

       lvscan [-a|--all] [-b|--blockdevice] [-d|--debug] [-h|--help] [--ignorelockingfailure] [-P|--partial] [-v|--verbose]

DESCRIPTION

       lvscan  scans all known volume groups or all supported LVM block devices in the system for defined Logical Volumes.  The output consists of
       one line for each Logical Volume indicating whether or not it is active, a snapshot or origin, the size of the device  and  its  allocation
       policy.  Use lvs(8) or lvdisplay(8) to obtain more-comprehensive information about the Logical Volumes.

OPTIONS

       See lvm for common options.

       --all  Include information in the output about internal Logical Volumes that are components of normally-accessible Logical Volumes, such as
              mirrors, but which are not independently accessible (e.g. not mountable).  For example, after creating a mirror using 'lvcreate  -m1
              --mirrorlog disk', this option will reveal three internal Logical Volumes, with suffixes mimage_0, mimage_1, and mlog.

       -b, --blockdevice
              This option is now ignored.  Instead, use lvs(8) or lvdisplay(8) to obtain the device number.

SEE ALSO

       lvm(8), lvcreate(8), lvdisplay(8) lvs(8)

Sistina Software UK                                      LVM TOOLS 2.02.95(2) (2012-03-06)                                               LVSCAN(8)
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