Linux Proxmox

How to add additional hard drive in Proxmox server

naveen

There are several ways you can add additional hard drives to Proxmox server. One the ways I did is to extend the existing volume group. There are the steps I took to accomplish this task.

  • Add the additional hard drive (HDD or SSD) to your Proxmox server.
  • I added my NVMe SSD 2TB to my server.
  • You can see in the picture below its /dev/nvme0n1 device. If you don’t see your device click on Reload button on the top.
  • Login into the Proxmox server GUI [https://ipaddress:8006] and go to Disk and select new disk. In my case its /dev/nvem0n1 and click on Wipe Disk
Disk wipe
  • Next, get the details of current physical disk and volume group
root@proxmoxa:~# pvs
  PV         VG  Fmt  Attr PSize    PFree
  /dev/sda3  pve lvm2 a--  <930.51g 16.00g
  • Here you can see my physical disk is called /dev/sda3
  • we can get the attributes associated with this disk by running pvdisplay
root@proxmoxa:~# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               pve
  PV Size               930.51 GiB / not usable 4.69 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              238210
  Free PE               4096
  Allocated PE          234114
  PV UUID               wPGkT3-NF8A-Eu5R-ndDM-q6Az-mhVC-7GbQtF
  • From the above output you can see that my volume group name is pve and it has /dev/sda3 as its physical disk. Next we will look at the volume group (VG) information.
  • For VG information we can use vgs & vgdisplay commands
  • Pay attention to Alloc PE / Size which is <914.51 GiB. Once we create physical disk and extend our VG, you should see updated size.
root@proxmoxa:~# vgs
  VG  #PV #LV #SN Attr   VSize    VFree
  pve   1   3   0 wz--n- <930.51g 16.00g
root@proxmoxa:~# vgdisplay
  --- Volume group ---
  VG Name               pve
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  7
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               <930.51 GiB
  PE Size               4.00 MiB
  Total PE              238210
  Alloc PE / Size       234114 / <914.51 GiB
  Free  PE / Size       4096 / 16.00 GiB
  VG UUID               elhmJ6-0XtV-1cOf-W6L7-mZ1J-fkVW-5kXALl
  • Now get the details about our new disk. Run fdisk -l | grep '^Disk /dev/'
  • From our output you can see we have /dev/sda which is our existing disk. dev/nvme0n1 is the one I added, this is our new disk
  • run the lvmdiskscan to see the disk that are currently available
root@proxmoxa:~# fdisk -l | grep '^Disk /dev/'
		Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
		Disk /dev/nvme0n1: 1.86 TiB, 2048408248320 bytes, 4000797360 sectors
		Disk /dev/mapper/pve-swap: 8 GiB, 8589934592 bytes, 16777216 sectors
		Disk /dev/mapper/pve-root: 96 GiB, 103079215104 bytes, 201326592 sectors
		
		# another option is to use the lvmdiskscan
		root@proxmoxa:~# lvmdiskscan
		  /dev/nvme0n1 [       1.86 TiB]
		  /dev/sda2    [       1.00 GiB]
		  /dev/sda3    [     930.51 GiB] LVM physical volume
		  0 disks
		  2 partitions
		  0 LVM physical volume whole disks
		  1 LVM physical volume
  • Next step is to create physical volume on our new disk /dev/nvme0n1
  • when run the lvmdiskscan again after pvcreate command you will notices that we see two LVM physical volumes
root@proxmoxa:~# pvcreate /dev/nvme0n1
		pvcreate /dev/nvme0n1
		  Physical volume "/dev/nvme0n1" successfully created.
		
		# run the lvmdiskscan again
		root@proxmoxa:~# lvmdiskscan
		  /dev/nvme0n1 [       1.86 TiB] LVM physical volume
		  /dev/sda2    [       1.00 GiB]
		  /dev/sda3    [     930.51 GiB] LVM physical volume
		  0 disks
		  1 partition
		  0 LVM physical volume whole disks
		  2 LVM physical volumes
  • Next, add the newly created physical volume /dev/nvme0n1 to our volume group pve
root@proxmoxa:~# vgextend pve /dev/nvme0n1
	  Volume group "pve" successfully extended
  • Next, extend the /dev/pve/data
root@proxmoxa:~# lvmdiskscan
		  /dev/nvme0n1 [       1.86 TiB] LVM physical volume
		  /dev/sda2    [       1.00 GiB]
		  /dev/sda3    [     930.51 GiB] LVM physical volume
		  0 disks
		  1 partition
		  0 LVM physical volume whole disks
		  2 LVM physical volumes
		root@proxmoxa:~# lvextend /dev/pve/data -L +1.86TB
		  Rounding size to boundary between physical extents: 1.86 TiB.
		  Size of logical volume pve/data_tdata changed from 794.30 GiB (203342 extents) to <2.64 TiB (690930 extents).
		  Logical volume pve/data successfully resized.
  • Next, verify the volume group is extended to new size in our case it should be around 2.6TiB
  • - Alloc PE / Size 2.75 TiB
root@proxmoxa:~# vgdisplay
		  --- Volume group ---
		  VG Name               pve
		  System ID
		  Format                lvm2
		  Metadata Areas        2
		  Metadata Sequence No  9
		  VG Access             read/write
		  VG Status             resizable
		  MAX LV                0
		  Cur LV                3
		  Open LV               2
		  Max PV                0
		  Cur PV                2
		  Act PV                2
		  VG Size               2.77 TiB
		  PE Size               4.00 MiB
		  Total PE              726588
		  Alloc PE / Size       721702 / 2.75 TiB
		  Free  PE / Size       4886 / <19.09 GiB
		  VG UUID               elhmJ6-0XtV-1cOf-W6L7-mZ1J-fkVW-5kXALl
Pve exetended