Question

1

LVM partition not seen

rated 0 times [ 1] [ 0] / answers: 1 / hits: 1983 / 1 Year ago, thu, january 5, 2023, 3:40:37

Ubuntu 20.04.1 LTS Server
I increased the LVM PV partition with live gparted from 7 to 17 G but the system can't see yet the 17 G. Instead other disk utils (gparted, fdisk, etc) reports 17 G. How can I fix that? Thanks folks!

lsblk

NAME                      MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT

sda                         8:0    0 498.2G  0 disk 

├─sda1                      8:1    0     1M  0 part 

├─sda2                      8:2    0     1G  0 part /boot

└─sda3                      8:3    0    17G  0 part 

  └─ubuntu--vg-ubuntu--lv 253:0    0     7G  0 lvm  /



vgdisplay

  --- Volume group ---

  VG Name               ubuntu-vg

  System ID             

  Format                lvm2

  Metadata Areas        1

  Metadata Sequence No  5

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                1

  Open LV               1

  Max PV                0

  Cur PV                1

  Act PV                1

  VG Size               <16.94 GiB

  PE Size               4.00 MiB

  Total PE              4336

  Alloc PE / Size       1791 / <7.00 GiB

  Free  PE / Size       2545 / 9.94 GiB

  VG UUID               frHn5C-8jpB-Fq7N-SBiw-Hi60-ndAc-eFJQb0



lvdisplay

  --- Logical volume ---

  LV Path                /dev/ubuntu-vg/ubuntu-lv

  LV Name                ubuntu-lv

  VG Name                ubuntu-vg

  LV UUID                pbJ92z-o62R-3iHv-Cj6F-9Z8W-SP9J-5K6QUl

  LV Write Access        read/write

  LV Creation host, time ubuntu-server, 2020-12-11 22:33:57 +0000

  LV Status              available

  # open                 1

  LV Size                <7.00 GiB

  Current LE             1791

  Segments               1

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     256

  Block device           253:0

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answered 1 Year ago poous · Accepted Answer

With parted, fdisk, gdisk, etc. you only change the partition table on the disk. Since your old partitions are still in use by your system, it keeps using it with the information (start sector and size) it got at boot.

For your system to take into account your new partition table, you need to call partprobe. Then you will need to call pvresize and finally lvresize --resizefs.

Edit: hmmm, according to your vgdisplay output, apparently gparted took care of the partprobe and pvresize parts for you, then you just have to execute lvresize --resizefs on /dev/ubuntu-vg/ubuntu-lv.