1 Logical Volume Manager (LVM)
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3 include::attributes.txt[]
8 Most people install {pve} directly on a local disk. The {pve}
9 installation CD offers several options for local disk management, and
10 the current default setup uses LVM. The installer let you select a
11 single disk for such setup, and uses that disk as physical volume for
12 the **V**olume **G**roup (VG) `pve`. The following output is from a
13 test installation using a small 8GB disk:
17 PV VG Fmt Attr PSize PFree
18 /dev/sda3 pve lvm2 a-- 7.87g 876.00m
21 VG #PV #LV #SN Attr VSize VFree
22 pve 1 3 0 wz--n- 7.87g 876.00m
25 The installer allocates three **L**ogical **V**olumes (LV) inside this
30 LV VG Attr LSize Pool Origin Data% Meta%
31 data pve twi-a-tz-- 4.38g 0.00 0.63
32 root pve -wi-ao---- 1.75g
33 swap pve -wi-ao---- 896.00m
36 root:: Formatted as `ext4`, and contains the operation system.
40 data:: This volume uses LVM-thin, and is used to store VM
41 images. LVM-thin is preferable for this task, because it offers
42 efficient support for snapshots and clones.
47 We highly recommend to use a hardware RAID controller (with BBU) for
48 such setups. This increases performance, provides redundancy, and make
49 disk replacements easier (hot-pluggable).
51 LVM itself does not need any special hardware, and memory requirements
58 We install two boot loaders by default. The first partition contains
59 the standard GRUB boot loader. The second partition is an **E**FI **S**ystem
60 **P**artition (ESP), which makes it possible to boot on EFI systems.