Create LVM Partition (Logical Volume Manager) on 4TB hard disk

Task: Create LVM partition on 4 TB disk.

Step 1: Identify the Disk

First, list available disks to identify your 4TB hard disk.

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lsblk fdisk -l

Assume the new disk is /dev/sdb (replace it with the actual disk name if different).

Step 2: Partition the Disk

1. Use fdisk or parted to create a partition.

   Using fdisk:

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   fdisk /dev/sdb
   

   • Press n (New partition)

   • Press p (Primary partition)

   • Press Enter (Default first sector)

   • Press Enter (Default last sector to use the full disk)

   • Press t (Change partition type)

   • Enter 8e (Linux LVM)

   • Press w (Write changes)

2. Alternatively, using parted (for disks >2TB using GPT):

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   parted /dev/sdb
   

   • mklabel gpt (Creates GPT partition table)

   • mkpart primary 1MiB 100% (Creates a full-disk partition)

   • set 1 lvm on (Sets the partition as LVM)

   • quit

Step 3: Create a Physical Volume (PV)

Initialize the partition for LVM:

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pvcreate /dev/sdb1

Check:

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pvdisplay

Step 4: Create a Volume Group (VG)

Create a volume group (e.g., vg_data):

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vgcreate vg_data /dev/sdb1

Check:

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vgdisplay

Step 5: Create a Logical Volume (LV)

Create a logical volume (e.g., lv_storage with full 4TB size):

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lvcreate -l 100%FREE -n lv_storage vg_data

Check:

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lvdisplay

Step 6: Format the Logical Volume

Format it with ext4 or xfs:

For ext4:

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mkfs.ext4 /dev/vg_data/lv_storage

For xfs:

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mkfs.xfs /dev/vg_data/lv_storage

Step 7: Mount the Volume

Create a mount point and mount it:

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mkdir /mnt/storage mount /dev/vg_data/lv_storage /mnt/storage

To make it persistent, add it to /etc/fstab:

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echo "/dev/vg_data/lv_storage /mnt/storage ext4 defaults 0 0" >> /etc/fstab

Replace ext4 with xfs if using XFS.

Step 8: Verify

Check the mount and LVM status:

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df -h lsblk vgdisplay lvdisplay

Now, your 4TB LVM storage is ready! ? Let me know if you need any clarifications.