Resizing/Extending Logical Volumes (LVM) in Proxmox

#LVM #LinuxVolumeManagement #Proxmox #Partitioning

Full steps can be found at https://i12bretro.github.io/tutorials/0644.html

What is LVM?

LVM stands for Logical Volume Management. It is a system of managing logical volumes, or filesystems, that is much more advanced and flexible than the traditional method of partitioning a disk into one or more segments and formatting that partition with a filesystem. -  https://wiki.ubuntu.com/Lvm

WARNING

Below are the steps I took when I replaced my Proxmox 32GB microSD with a 64GB and cloned the installation from the old card to the new one. Do not attempt these steps without first having a backup as there is a high risk of data loss if the partition changes are unsuccessful

Extending a LVM Volume

   01. Log into the device using LVM, in this example I'll be extending the pve-root and data volumes in Proxmox    02. Run the following commands in terminal          # login as root if needed (not needed for proxmox)          sudo su          # list disks and partitions          fdisk -l          # list volume groups          vgdisplay          # list logical volumes          lvdisplay          # edit partitions with fdisk, change device id as needed          fdisk /dev/sda          # print the partition table          p          # delete a partition          d          # enter the lvm partition number          3          # create a new partition          n          # enter the new partition number, same as the number deleted          3          # press enter to accept the default first sector          # press enter to accept the default last sector          # when prompted about removing the LVM signature, enter N          n          # set the partition type          t          # enter the partition number          3          # set the type to Linux LVM          30          # write the changes          w          # list disks and partitions, noting the size increase          fdisk -l          # extend the existing physical volume          pvresize /dev/sda3          # extend the pve-root logical volume to 100% available free space          lvresize -L +8GB /dev/pve/root          # extend the underlying file system          resize2fs /dev/mapper/pve-root          # list logical volumes, noting root is now 8GB larger          lvdisplay          # extend the data to 100% available free space          lvextend -l +100%FREE pve/data          # list logical volumes, noting data is now over 35GB          lvdisplay   Further Reading:  https://wiki.ubuntu.com/Lvm  

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