VMware ESXi에서 VM 디스크 용량을 확장하고 우분투에서 루트 XFS 볼륨을 확장하는 방법

리눅스

VMware ESXi에서 VM 디스크 용량을 확장하고 우분투에서 루트 XFS 볼륨을 확장하는 방법

변군이글루 2025. 9. 15. 13:12

VMware ESXi에서 VM 디스크 용량을 확장하고 우분투에서 루트 XFS 볼륨을 확장하는 방법

테스트 환경

$ lsb_release -d
Description:    Ubuntu 22.04.3 LTS

$ lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sda             8:0    0   40G  0 disk 
└─sda3          8:3    0   39G  0 part 
  └─vg0-lv--0 253:0    0   39G  0 lvm  /

VMware ESXi에서 VM 디스크 확장

1. vSphere Client 접속 → VM 선택

2. Edit Settings → Hard disk → 원하는 크기만큼 확장 (예: 40GB → 100GB 추가해서 140GB로)

VM에서 디스크 인식 확인

---

$ lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sda             8:0    0   40G  0 disk 
├─sda1          8:1    0    1M  0 part 
├─sda2          8:2    0    1G  0 part /boot
└─sda3          8:3    0   39G  0 part 
  └─vg0-lv--0 253:0    0   39G  0 lvm  /
sr0            11:0    1  1.4G  0 rom

$ fdisk -l /dev/sda
Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: B82C4EB4-52E6-4EB9-9EB5-90234AB2A086

Device       Start      End  Sectors Size Type
/dev/sda1     2048     4095     2048   1M BIOS boot
/dev/sda2     4096  2101247  2097152   1G Linux filesystem
/dev/sda3  2101248 83884031 81782784  39G Linux filesystem

OS가 새 용량을 못 보이면 rescan

echo 1 | sudo tee /sys/class/block/sda/device/rescan

현재 디스크 확인

$ lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sda             8:0    0  140G  0 disk 
├─sda1          8:1    0    1M  0 part 
├─sda2          8:2    0    1G  0 part /boot
└─sda3          8:3    0   39G  0 part 
  └─vg0-lv--0 253:0    0   39G  0 lvm  /
sr0            11:0    1  1.4G  0 rom

$ fdisk -l /dev/sda
GPT PMBR size mismatch (83886079 != 293601279) will be corrected by write.
The backup GPT table is not on the end of the device.
Disk /dev/sda: 140 GiB, 150323855360 bytes, 293601280 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: B82C4EB4-52E6-4EB9-9EB5-90234AB2A086

Device       Start      End  Sectors Size Type
/dev/sda1     2048     4095     2048   1M BIOS boot
/dev/sda2     4096  2101247  2097152   1G Linux filesystem
/dev/sda3  2101248 83884031 81782784  39G Linux filesystem

parted로 GPT 테이블 재생성

파티션 툴로 GPT 테이블을 새 디스크 크기에 맞게 업데이트

parted /dev/sda

(parted) print

(parted) fix

(parted) quit

$ sudo parted /dev/sda
GNU Parted 3.4
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                            
Warning: Not all of the space available to /dev/sda appears to be used, you can fix the GPT to use all of the space (an extra 209715200 blocks) or continue with
the current setting? 
Fix/Ignore? Fix                                                           
Model: VMware Virtual disk (scsi)
Disk /dev/sda: 150GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  2097kB  1049kB                     bios_grub
 2      2097kB  1076MB  1074MB  xfs
 3      1076MB  42.9GB  41.9GB

---

lsblk

NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
sda             8:0    0  140G  0 disk 
├─sda1          8:1    0    1M  0 part 
├─sda2          8:2    0    1G  0 part /boot
└─sda3          8:3    0   39G  0 part 
  └─vg0-lv--0 253:0    0   39G  0 lvm  /
sr0            11:0    1  1.4G  0 rom

fdisk -l /dev/sda

Disk /dev/sda: 140 GiB, 150323855360 bytes, 293601280 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: B82C4EB4-52E6-4EB9-9EB5-90234AB2A086

Device       Start      End  Sectors Size Type
/dev/sda1     2048     4095     2048   1M BIOS boot
/dev/sda2     4096  2101247  2097152   1G Linux filesystem
/dev/sda3  2101248 83884031 81782784  39G Linux filesystem

growpart 설치

---

cloud-guest-utils 패키지 설치

sudo apt install -y cloud-guest-utils

---

파티션 확장(growpart)

3은 /dev/sda3 → LVM PV 파티션 번호

growpart /dev/sda 3

CHANGED: partition=3 start=2101248 old: size=81782784 end=83884032 new: size=291499999 end=293601247

PV(Physical Volume) 확장

PV 크기 확인

pvdisplay

  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               vg0
  PV Size               <139.00 GiB / not usable 16.50 KiB
  Allocatable           yes 
  PE Size               4.00 MiB
  Total PE              35583
  Free PE               25600
  Allocated PE          9983
  PV UUID               dEHB35-CcsZ-ckHs-911H-6NR9-rtud-ZH2ESA

pvresize /dev/sda3

  Physical volume "/dev/sda3" changed
  1 physical volume(s) resized or updated / 0 physical volume(s) not resized

LV(Logical Volume) 확장

루트 LV 이름 확인

lvdisplay

  --- Logical volume ---
  LV Path                /dev/vg0/lv-0
  LV Name                lv-0
  VG Name                vg0
  LV UUID                7QsAeb-IWoZ-Ecy1-6fWU-45jW-1r5T-6olYUJ
  LV Write Access        read/write
  LV Creation host, time ubuntu-server, 2023-11-29 13:58:38 +0900
  LV Status              available
  # open                 1
  LV Size                <39.00 GiB
  Current LE             9983
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

루트 LV 확장(남은 공간 전부 루트 볼륨에 할당)

lvextend -l +100%FREE /dev/vg0/lv-0

  Size of logical volume vg0/lv-0 changed from <39.00 GiB (9983 extents) to <139.00 GiB (35583 extents).
  Logical volume vg0/lv-0 successfully resized.

$ lvdisplay
  --- Logical volume ---
  LV Path                /dev/vg0/lv-0
  LV Name                lv-0
  VG Name                vg0
  LV UUID                7QsAeb-IWoZ-Ecy1-6fWU-45jW-1r5T-6olYUJ
  LV Write Access        read/write
  LV Creation host, time ubuntu-server, 2023-11-29 13:58:38 +0900
  LV Status              available
  # open                 1
  LV Size                <139.00 GiB
  Current LE             35583
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

XFS 파일시스템 확장

xfs_growfs /

meta-data=/dev/mapper/vg0-lv--0  isize=512    agcount=4, agsize=2555648 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=0 inobtcount=0
data     =                       bsize=4096   blocks=10222592, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=4991, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 10222592 to 36436992

확인

df -Th | grep -v tmpfs

Filesystem            Type   Size  Used Avail Use% Mounted on
/dev/mapper/vg0-lv--0 xfs    139G   40G  100G  29% /
/dev/sda2             xfs   1014M  293M  722M  29% /boot

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