The steps can be done when the disk is online; only creating the partition required a reboot for me.

Growing the filesystem

1. Create a physical LVM volume: pvcreate /dev/sdaN; check using pvdisplay

   $ pvcreate /dev/sdaN
     Physical volume "/dev/sdaN" successfully created
   

   $ pvdisplay
      --- Physical volume ---
     PV Name               /dev/sda1
     VG Name               vg-name
     ...
    
     --- Physical volume ---
     PV Name               /dev/sda2
     VG Name               vg-name
     ...
    
     "/dev/sdaN" is a new physical volume of "100.00 GiB"
     --- NEW Physical volume ---
     PV Name               /dev/sdaN
     VG Name
     PV Size               100.00 GiB
     Allocatable           NO
     PE Size               0
     Total PE              0
     Free PE               0
     Allocated PE          0
     ...
   

2. Extend the volume group: vgextend vg-name /dev/sdaN; check using lvdisplay

   $ vgextend vg-name /dev/sdaN
     Volume group "vg-name" successfully extended
   

   $ lvdisplay
    
     --- Logical volume ---
     LV Name                /dev/vg-name/root
     VG Name                vg-name
     ...
   

3. Extend the logical volume to all free space available: lvextend -l+100%FREE /dev/vg-name/root

   $ lvextend -l+100%FREE /dev/vg-name/root
   

4. Resize the file system: resize2fs /dev/mapper/vg--name-root

   $ resize2fs /dev/mapper/vg--name-root
   

Partition type code for LVM is 8e.

Some more useful commands

lvmdiskscan -l to scan for LVM physical volumes
vgdisplay -v to summarize lot of information about a volume group
lvs to find the logical volumes and there size; also try the --segments argument

posted at: 11:16 | path: /configuration | permanent link