Extend existing LVM Partition from 4TB to 6TB

Step 1: Verify Current Setup

Check the current disk and LVM structure.

bash
CopyEdit
lsblk fdisk -l vgdisplay lvdisplay
df -h

Step 2: Extend the Physical Disk in VM

If you are using a VM, extend the virtual disk via the hypervisor (VMware, VirtualBox, KVM, etc.).
After increasing the disk size, check if the OS detects the additional space:

bash
CopyEdit
lsblk

If the disk does not reflect the new size, reboot the VM:

bash
CopyEdit
reboot

Step 3: Resize the Partition

If your disk has a GPT partition, use parted:

bash
CopyEdit
parted /dev/sdb

• print → Verify existing partition

• resizepart 1 100% → Resize partition to use the full 6TB

• quit

For MBR partition (fdisk may not support >2TB), consider using GPT instead.

Step 4: Resize the Physical Volume (PV)

After resizing the partition, extend the Physical Volume:

bash
CopyEdit
pvresize /dev/sdb1

Check the new space:

bash
CopyEdit
pvdisplay

Step 5: Extend the Volume Group (VG)

Check current VG size:

bash
CopyEdit
vgdisplay vg_data

Extend the volume group:

bash
CopyEdit
vgextend vg_data /dev/sdb1

Verify:

bash
CopyEdit
vgdisplay vg_data

Step 6: Extend the Logical Volume (LV)

To extend the Logical Volume to use all available space:

bash
CopyEdit
lvextend -l +100%FREE /dev/vg_data/lv_storage

Check:

bash
CopyEdit
lvdisplay

Step 7: Resize the Filesystem

For ext4:

bash
CopyEdit
resize2fs /dev/vg_data/lv_storage

For xfs:

bash
CopyEdit
xfs_growfs /mnt/storage

Step 8: Verify the Changes

Check if the new size is reflected:

bash
CopyEdit
df -h lsblk

Now, your LVM has been successfully expanded from 4TB to 6TB! ? Let me know if you need further help.