新規でパーティション：lvmとファイルシステム：を作成する
ファイルシステムは、
環境情報・前提
・AWS EC2
・EBS作成しEC2へアタッチ済み
・lvm2 パッケージがインストール済み
１．デバイスファイルのフルパスを表示
[root@ip-10-0-0-31 ~]# lsblk -p
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
├/dev/xvda 202:0 0 8G 0 disk
├/dev/xvda1 202:1 0 8G 0 part /
├/dev/xvda127 259:0 0 1M 0 part
└/dev/xvda128 259:1 0 10M 0 part /boot/efi
/dev/xvdb 202:16 0 15G 0 disk
２．パーティションの作成
Command (m for help): n
Select (default p): p
Partition number (1-4, default 1): 1
[root@ip-10-0-0-31 ~]# fdisk /dev/xvdb
Welcome to fdisk (util-linux 2.37.4).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0xc8d17e30.
Command (m for help): n
Partition type
p primary (0 primary, 0 extended, 4 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-31457279, default 2048):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-31457279, default 31457279):
Created a new partition 1 of type 'Linux' and of size 15 GiB.
Command (m for help):
fdiskコマンドの操作オプション
[root@ip-10-0-0-31 ~]# fdisk /dev/xvdb
Welcome to fdisk (util-linux 2.37.4).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0x15b834ed.
Command (m for help): m
Help:
DOS (MBR)
a toggle a bootable flag
b edit nested BSD disklabel
c toggle the dos compatibility flag
Generic
d delete a partition
F list free unpartitioned space
l list known partition types
n add a new partition
p print the partition table
t change a partition type
v verify the partition table
i print information about a partition
Misc
m print this menu
u change display/entry units
x extra functionality (experts only)
Script
I load disk layout from sfdisk script file
O dump disk layout to sfdisk script file
Save & Exit
w write table to disk and exit
q quit without saving changes
Create a new label
g create a new empty GPT partition table
G create a new empty SGI (IRIX) partition table
o create a new empty DOS partition table
s create a new empty Sun partition table
Command (m for help):
２-２．パーティションを作成
以下の順で実施する
Command (m for help): t
Hex code or alias (type L to list all): L
Hex code or alias (type L to list all): 8e
Command (m for help): w
w 入力し押下後、パーティションの設定が反映される
Command (m for help):
Command (m for help): t
Selected partition 1
Hex code or alias (type L to list all): L
00 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
01 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
02 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
03 XENIX usr 3c PartitionMagic 84 OS/2 hidden or c6 DRDOS/sec (FAT-
04 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
05 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
06 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
07 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
08 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
09 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
0a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
0b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
0c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi ea Linux extended
0e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD eb BeOS fs
0f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ee GPT
10 OPUS 55 EZ-Drive a7 NeXTSTEP ef EFI (FAT-12/16/
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f0 Linux/PA-RISC b
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f1 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f4 SpeedStor
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ f2 DOS secondary
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fb VMware VMFS
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fc VMware VMKCORE
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fd Linux raid auto
1c Hidden W95 FAT3 75 PC/IX bc Acronis FAT32 L fe LANstep
1e Hidden W95 FAT1 80 Old Minix be Solaris boot ff BBT
Aliases:
linux - 83
swap - 82
extended - 05
uefi - EF
raid - FD
lvm - 8E
linuxex - 85
Hex code or alias (type L to list all): 8e
Changed type of partition 'Linux' to 'Linux LVM'.
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.
[root@ip-10-0-0-31 ~]#
２-３．lvmパーティションが作成されたことを確認する
[root@ip-10-0-0-31 ~]# lsblk -p
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
/dev/xvda 202:0 0 8G 0 disk
├/dev/xvda1 202:1 0 8G 0 part /
├/dev/xvda127 259:0 0 1M 0 part
└/dev/xvda128 259:1 0 10M 0 part /boot/efi
/dev/xvdb 202:16 0 15G 0 disk
└/dev/xvdb1 202:17 0 15G 0 part
３．物理ボリューム（PV）の作成
２-x 作成したパーミッションに対して以下コマンドを実行する
[root@ip-10-0-0-31 ~]# pvcreate /dev/xvdb1
Physical volume "/dev/xvdb1" successfully created.
３-２．pvsが作成されたことを確認する
[root@ip-10-0-0-31 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sdb1 lvm2 --- <15.00g <15.00g
[root@ip-10-0-0-31 ~]# pvdisplay
"/dev/sdb1" is a new physical volume of "<15.00 GiB"
--- NEW Physical volume ---
PV Name /dev/sdb1
VG Name
PV Size <15.00 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 8JVu1o-o5ga-CpBS-pvjX-LgYs-I24T-RKx1Ex
４．ボリュームグループ（VG）の作成
[root@ip-10-0-0-31 ~]# vgcreate vg_dev /dev/xvdb1
Volume group "vg_dev" successfully created
[root@ip-10-0-0-31 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vg_dev 1 0 0 wz--n- <15.00g <15.00g
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]# vgdisplay
--- Volume group ---
VG Name vg_dev
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size <15.00 GiB
PE Size 4.00 MiB
Total PE 3839
Alloc PE / Size 0 / 0
Free PE / Size 3839 / <15.00 GiB
VG UUID jPbh3i-oj7y-3yWT-Hgi4-49Wq-zLcH-lESza8
５．論理ボリューム（VG）の割り当て
[root@ip-10-0-0-31 ~]# lvcreate -l 100%FREE -n lv_dev vg_dev
Logical volume "lv_dev" created.
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv_dev vg_dev -wi-a----- <15.00g
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]#
[root@ip-10-0-0-31 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/vg_dev/lv_dev
LV Name lv_dev
VG Name vg_dev
LV UUID jtdShH-l0Ep-aLBI-ZGxz-Lcch-qnlU-PUfaPO
LV Write Access read/write
LV Creation host, time ip-10-0-0-31.ap-northeast-1.compute.internal, 2025-03-04 20:24:27 +0000
LV Status available
# open 0
LV Size <15.00 GiB
Current LE 3839
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
６．論理ボリュームが割り当てられたことを確認する
[root@ip-10-0-0-31 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
xvda 202:0 0 8G 0 disk
├xvda1 202:1 0 8G 0 part /
├xvda127 259:0 0 1M 0 part
├xvda128 259:1 0 10M 0 part /boot/efi
xvdb 202:16 0 15G 0 disk
└xvdb1 202:17 0 15G 0 part
└vg_dev-lv_dev 253:0 0 15G 0 lvm