You have 150GB of unpartitioned space on your disk (/dev/sda). To resize ubuntu--vg-ubuntu--lv and make use of this space, follow these steps:

Step 1: Create a New Partition

1. Open a terminal and start fdisk:

   sudo fdisk /dev/sda

2. Create a new primary partition:
   • Press n (new partition)
   • Select p (primary)
   • Choose the default partition number
   • Press Enter to accept the default start sector
   • Press Enter to accept the default end sector (using all available space)
3. Change partition type to LVM:
   • Press t (change partition type)
   • Select the new partition number
   • Type 8e (Linux LVM)
4. Write the changes and exit:
   • Press w (write changes and exit)

Step 2: Update Kernel to Recognize the New Partition

Run:

sudo partprobe

If partprobe is not available, reboot the system.

Step 3: Convert the New Partition to a Physical Volume

sudo pvcreate /dev/sda4

(Assuming the new partition is /dev/sda4, adjust if needed.)

Step 4: Extend the Volume Group

sudo vgextend ubuntu-vg /dev/sda4

Step 5: Extend the Logical Volume

sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

Step 6: Resize the Filesystem

For EXT4 filesystem:

sudo resize2fs /dev/ubuntu-vg/ubuntu-lv

For XFS filesystem:

sudo xfs_growfs /

Step 7: Verify the Changes

df -h

Now, your logical volume should have the additional 150GB available. Let me know if you need any modifications! 🚀

No, you do not need to modify /etc/fstab or run mount -a for these changes to persist across reboots. Here’s why:

Why?

1. LVM Changes Persist Automatically

   • The new partition (/dev/sda4 → LVM) is added to the volume group (ubuntu-vg).
   • Logical volume (ubuntu--vg-ubuntu--lv) is resized.
   • These changes are stored in the LVM metadata and persist across reboots.

2. Filesystem Resizing is Permanent

   • The resize2fs (for EXT4) or xfs_growfs (for XFS) command permanently resizes the filesystem.

Verification After Reboot

After a reboot, verify the changes using:

df -h   # Check available space
lsblk    # Confirm the volume sizes
sudo vgs # Check volume group size
sudo lvs # Check logical volume size

When to Modify /etc/fstab?

You only need to modify /etc/fstab if:

1. You created a new partition outside LVM (not applicable here).
2. You want to mount an additional partition separately.
3. You need to change mount options (e.g., adding noatime, discard for SSDs).

Since you're expanding an existing LVM volume, there's no need to update /etc/fstab. 🚀