Proxmox LVM pool

proxmox-lvm-pool.md

How to properly configure a VM data pool

Initial setup

• HP DL360 Gen9
• 2 RAID arrays
  • RAID0 running on SSD for OS
  • RAID6 running on SAS HDD for data

Configuration

• Installed Proxmox through USB
• Configured proper network
• Proxmox partitions and configures OS disk itself, allocating space for image storage as well

Next, we need to create a new physical volume, based on RAID6 (delete any other existing volume groups for that disk, if present).

# Create physical disk based on the RAID device /dev/sdb
fdisk -c -u /dev/sdb
# Type 'n' for new partition
# Type 't' to choose partition type
# Choose 'Linux LVM' code or type 'lvm' as alias
# Write settings with 'w'

# Check that device appeared
fdisk -l

# Create Physical Volume for LVM
pvcreate /dev/sdb1

# Create Volume Group (it has to be vmdata)
vgcreate vmdata /dev/sdb1

# Create Logical Volume
# '-L 2000G' is 2TB size (extendable)
# '-T' choose thin volume (allows over-commit)
# '-c 64KiB' minimal chunk size is 64KiB with maximym volume being ~16TB
lvcreate -L 2000G -T -c 64K -n vmdata vmdata