Changed hdd size but Ubuntu vm not reporting proper sizes

[omar.migs]

Hello everyone, and im so happy to join such a great community.
i created an ubuntu vm and assigned it a LVM disk for storage. on the initial setup i made a mistake and only assigned 850 gb, i copied all my files and then i found out i only have 30 gb left of storage. So i wanted to increase the disk size and this is the steps i did:

qm resize 100 scsi0 +30g

i then logged insisde the vm "ubuntu server 22.04" and this what i did:

sudo parted -l

it then reported that there is a mismatch and asked if it should fix it and i said Fix
then when i did df -u it shows the old partition size :

Disk /dev/sda: 945GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  2097kB  1049kB                     bios_grub
 2      2097kB  913GB   913GB   ext4

when i do df -h :

tmpfs           392M  1.3M  390M   1% /run
/dev/sda2       836G  754G   40G  95% /
tmpfs           2.0G     0  2.0G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           392M  8.0K  392M   1% /run/user/1000

lsblk reports 880 gb but the partition /dev/sda2 is still the same size :

sda      8:0    0   880G  0 disk
├─sda1   8:1    0     1M  0 part
└─sda2   8:2    0   850G  0 part /

i tried resize2fs but didnt work. What am i missing .

 

[leesteken]

Maybe Ubuntu did not notice the new partition size? Maybe reboot the VM or run partprobe (inside the VM) or something similar. Then resize2fs can extend the ext4 online.

 

[omar.migs]

Thank you for the reply @leesteken . after reading the docs again i realized that the new added space is just unallocated space so I could see it with :

parted print free

then i used parted to extend the partition

resizepart 2 100%

now it works fine and system is still running luckily.