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I installed Ubuntu Server 20.04 on an old laptop to use a plex media server. It is mostly working. I am however running into an issue where I am unable to use more than around 100 GB of the 1TB internal storage.

/dev/sda is showing 3 separate volumes: sda1, sda2, sda3

sda3 is the bulk of free storage but I'm unable to access it or use the space. It has been a very long time since I've operated entirely out of an ssh shell so any help would be appreciated. I'm willing to provide any necessary information.

I can SSH fully into the machine, and even move files using Transmit.

plexfamily@plex:~$sudo fdisk -l
Disk /dev/loop0: 61.89 MiB, 64901120 bytes, 126760 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop1: 61.93 MiB, 64933888 bytes, 126824 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop2: 79.95 MiB, 83832832 bytes, 163736 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop3: 44.68 MiB, 46845952 bytes, 91496 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop4: 46.95 MiB, 49233920 bytes, 96160 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: TOSHIBA MQ01ABD1
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: gpt
Disk identifier: E503645F-BB93-494E-8068-C2926E858FB9


Device       Start        End    Sectors   Size Type
/dev/sda1     2048    2203647    2201600     1G EFI System
/dev/sda2  2203648    6397951    4194304     2G Linux filesystem
/dev/sda3  6397952 1953521663 1947123712 928.5G Linux filesystem


Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 100 GiB, 107374182400 bytes, 209715200 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

PV         VG        Fmt  Attr PSize    PFree  
  /dev/sda3  ubuntu-vg lvm2 a--  <928.46g <28.46g

LV        VG        Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  ubuntu-lv ubuntu-vg -wi-ao---- 900.00g

I did attempt to extend the lv but it's still only showing me around 100G usable.

Knight of Dis
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  • What does pvs and lvs print? Seems like your system is on a LVM with only 100GB allocated, /dev/sda3 being the underlying volume. – tkausl Jul 05 '22 at 21:40
  • Command results added to original post – Knight of Dis Jul 05 '22 at 21:51
  • Interesting, did you do anything inbetween asking the question and now? Your lvm says ubuntu-lv is 900G while fdisk says it is 100G – tkausl Jul 05 '22 at 22:04
  • I attempted to extend it. fdisk says 900 now as well. but when looking at df it still shows as almost completely full with a max of 100.

    I'm attempting to move some files that will take it over that limit and see what happens

     – Knight of Dis Jul 05 '22 at 22:05
  • After attempting to move files it still failed when it maxed out the 100 GB – Knight of Dis Jul 05 '22 at 22:06
  • Alright, seems like you got your partition extended already, just need to extend the FS aswell now. – tkausl Jul 05 '22 at 22:07

1 Answers1

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Your partition /dev/sda3 is a LVM physical volume, added to the group ubuntu-vg, however your logical volume ubuntu-lv only uses 100G of the provided ~928G.

If you just want to use all this space for your root partition, you can use

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

According to the new information given, you extended the volume without resizing the file system (the --resizefs flag) so you have to run resize2fs manually.

resize2fs /dev/ubuntu-vg/ubuntu-lv
tkausl
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