My recent install of Ubuntu Server 18.04 appears to have created an LV mounted on / that is only 4GB. However the volume group is 160GB as expected.
But I get an insufficient disk space message when I try and expand the LV even though the group appears to have free space:
tom@git:~$ sudo pvs PV VG Fmt Attr PSize PFree /dev/vda3 ubuntu-vg lvm2 a-- <159.00g <155.00g tom@git:~$ sudo vgs VG #PV #LV #SN Attr VSize VFree ubuntu-vg 1 1 0 wz--n- <159.00g <155.00g tom@git:~$ sudo lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert ubuntu-lv ubuntu-vg -wi-ao---- 4.00g tom@git:~$ sudo lvextend -L +10G /dev/ubuntu-vg/ubuntu-lv /etc/lvm/archive/.lvm_git_20778_346817101: write error failed: No space left on device
Any ideas here? My root filesystem is at 100%, the new installer obviously doesn't make use of all disk space for the primary LV by default.