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