Extending LVM partition in Linux?

I'm trying to extend the disk space on the root partition of my ubuntu VM from 1.5TB to 3.4TB. I thought this would be an easy task but I'm having a hard time figuring out how to do this on an OS level. The console outputs below explain my current setup (nothing fancy, just one partition with a large amount of storage):

root@ubuntu-samba:/home/joel# fdisk -l
Disk /dev/sda: 3.4 TiB, 3758096384000 bytes, 7340032000 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xbad8753d

Device     Boot   Start        End    Sectors  Size Id Type
/dev/sda1  *       2048     999423     997376  487M 83 Linux
/dev/sda2       1001470 3147825151 3146823682  1.5T  5 Extended
/dev/sda5       1001472 3147825151 3146823680  1.5T 8e Linux LVM

Partition 2 does not start on physical sector boundary.


Disk /dev/mapper/ubuntu--samba--vg-root: 1.5 TiB, 1606879805440 bytes, 3138437120 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/mapper/ubuntu--samba--vg-swap_1: 4 GiB, 4290772992 bytes, 8380416 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes

root@ubuntu-samba:/home/joel# vgdisplay
  --- Volume group ---
  VG Name               ubuntu-samba-vg
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  10
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               1.47 TiB
  PE Size               4.00 MiB
  Total PE              384133
  Alloc PE / Size       384133 / 1.47 TiB
  Free  PE / Size       0 / 0   
  VG UUID               RZUZwh-xTB4-Dh90-vrYA-Ej1e-kUiM-az4y2k

root@ubuntu-samba:/home/joel# lvs
  LV     VG              Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root   ubuntu-samba-vg -wi-ao---- 1.46t                                                    
  swap_1 ubuntu-samba-vg -wi-ao---- 4.00g

root@ubuntu-samba:/home/joel# vgs
  VG              #PV #LV #SN Attr   VSize VFree
  ubuntu-samba-vg   1   2   0 wz--n- 1.47t    0

root@ubuntu-samba:/home/joel# pvs
  PV         VG              Fmt  Attr PSize PFree
  /dev/sda5  ubuntu-samba-vg lvm2 a--  1.47t    0

root@ubuntu-samba:/home/joel# df -h
Filesystem                          Size  Used Avail Use% Mounted on
udev                                2.0G     0  2.0G   0% /dev
tmpfs                               395M   11M  385M   3% /run
/dev/mapper/ubuntu--samba--vg-root  1.5T  1.4T   55G  97% /
tmpfs                               2.0G     0  2.0G   0% /dev/shm
tmpfs                               5.0M     0  5.0M   0% /run/lock
tmpfs                               2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/sda1                           472M  310M  138M  70% /boot
tmpfs                               395M     0  395M   0% /run/user/1000

Question:
How do I extend the physical volume '/dev/sda5' to use 100% of '/dev/sda's storage (3.4TB)?

I've done a lot of playing around but getting nowhere.
A lot of online tutorials claim it's as simple as extending the logical volume, but that's not working for me as the additional storage isn't detected.

lvextend -L +100%FREE /dev/mapper/ubuntu--samba--vg-root

 New size (383110 extents) matches existing size (383110 extents)

Any pointers would be greatly appreciated as I've wasted days on this and am desperate for additional storage :(

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Extending LVM partition in Linux?

Joel Murphy

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