PVE磁盘扩容方案

February 5, 2026Comments

初始安装系统的时候,硬盘只给我50G,在PVE面板增加了450G,那么操作系统里面需要进行扩容操作:

一、基于parted

$ fdisk -lu /dev/sda
Disk /dev/sda: 500 GiB, 536870912000 bytes, 1048576000 sectors
Disk model: QEMU HARDDISK   
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: dos
Disk identifier: 0x51185552
Device     Boot     Start       End   Sectors Size Id Type
/dev/sda1            2048 100665343 100663296  48G 83 Linux
/dev/sda2       100667390 104855551   4188162   2G  f W95 Ext'd (LBA)
/dev/sda5       100667392 104855551   4188160   2G 82 Linux swap / Solaris

$ swapoff /dev/sda5

$ parted /dev/sda
GNU Parted 3.6
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print free                                                       
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 537GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type      File system     Flags
        1024B   1049kB  1048kB            Free Space
 1      1049kB  51.5GB  51.5GB  primary   xfs
        51.5GB  51.5GB  1048kB            Free Space
 2      51.5GB  53.7GB  2144MB  extended                  lba
 5      51.5GB  53.7GB  2144MB  logical   linux-swap(v1)  swap
        53.7GB  537GB   483GB             Free Space

(parted) rm 5
(parted) rm 2                                                             
(parted) print free                                                       
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 537GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
        1024B   1049kB  1048kB           Free Space
 1      1049kB  51.5GB  51.5GB  primary  xfs
        51.5GB  537GB   485GB            Free Space

(parted) resizepart 1 537GB                                               
Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? y                                                                 
(parted) print free                                                       
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 537GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
        1024B   1049kB  1048kB           Free Space
 1      1049kB  537GB   537GB   primary  xfs

(parted) wq                                                               

$ df -h                                                       
Filesystem      Size  Used Avail Use% Mounted on
udev            960M     0  960M   0% /dev
tmpfs           198M  452K  197M   1% /run
/dev/sda1        48G  2.2G   46G   5% /
tmpfs           987M     0  987M   0% /dev/shm
tmpfs           1.0M     0  1.0M   0% /run/credentials/systemd-journald.service
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           987M     0  987M   0% /tmp
tmpfs           1.0M     0  1.0M   0% /run/credentials/getty@tty1.service
tmpfs           198M  4.0K  198M   1% /run/user/1000

$ xfs_growfs /dev/sda1
meta-data=/dev/sda1              isize=512    agcount=4, agsize=3145728 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=1
         =                       reflink=1    bigtime=1 inobtcount=1 nrext64=1
         =                       exchange=0   metadir=0
data     =                       bsize=4096   blocks=12582912, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1, parent=0
log      =internal log           bsize=4096   blocks=16384, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
         =                       rgcount=0    rgsize=0 extents
data blocks changed from 12582912 to 131071744
root@Gitea:~# df -h               
Filesystem      Size  Used Avail Use% Mounted on
udev            960M     0  960M   0% /dev
tmpfs           198M  452K  197M   1% /run
/dev/sda1       500G   11G  490G   3% /
tmpfs           987M     0  987M   0% /dev/shm
tmpfs           1.0M     0  1.0M   0% /run/credentials/systemd-journald.service
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           987M     0  987M   0% /tmp
tmpfs           1.0M     0  1.0M   0% /run/credentials/getty@tty1.service
tmpfs           198M  4.0K  198M   1% /run/user/1000

100

$ fdisk -lu /dev/sda

Disk /dev/sda: 500 GiB, 536870912000 bytes, 1048576000 sectors

Disk model: QEMU HARDDISK

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: dos

Disk identifier: 0x51185552

Device Boot Start End Sectors Size Id Type

/dev/sda1 2048 100665343 100663296 48G 83 Linux

/dev/sda2 100667390 104855551 4188162 2G f W95 Ext'd (LBA)

/dev/sda5 100667392 104855551 4188160 2G 82 Linux swap / Solaris

$ swapoff /dev/sda5

$ parted /dev/sda

GNU Parted 3.6

Using /dev/sda

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) print free

Model: QEMU QEMU HARDDISK (scsi)

Disk /dev/sda: 537GB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Disk Flags:

Number Start End Size Type File system Flags

1024B 1049kB 1048kB Free Space

1 1049kB 51.5GB 51.5GB primary xfs

51.5GB 51.5GB 1048kB Free Space

2 51.5GB 53.7GB 2144MB extended lba

5 51.5GB 53.7GB 2144MB logical linux-swap(v1) swap

53.7GB 537GB 483GB Free Space

(parted) rm 5

(parted) rm 2

(parted) print free

Model: QEMU QEMU HARDDISK (scsi)

Disk /dev/sda: 537GB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Disk Flags:

Number Start End Size Type File system Flags

1024B 1049kB 1048kB Free Space

1 1049kB 51.5GB 51.5GB primary xfs

51.5GB 537GB 485GB Free Space

(parted) resizepart 1 537GB

Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?

Yes/No? y

(parted) print free

Model: QEMU QEMU HARDDISK (scsi)

Disk /dev/sda: 537GB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Disk Flags:

Number Start End Size Type File system Flags

1024B 1049kB 1048kB Free Space

1 1049kB 537GB 537GB primary xfs

(parted) wq

$ df -h

Filesystem Size Used Avail Use% Mounted on

udev 960M 0 960M 0% /dev

tmpfs 198M 452K 197M 1% /run

/dev/sda1 48G 2.2G 46G 5% /

tmpfs 987M 0 987M 0% /dev/shm

tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service

tmpfs 5.0M 0 5.0M 0% /run/lock

tmpfs 987M 0 987M 0% /tmp

tmpfs 1.0M 0 1.0M 0% /run/credentials/getty@tty1.service

tmpfs 198M 4.0K 198M 1% /run/user/1000

$ xfs_growfs /dev/sda1

meta-data=/dev/sda1 isize=512 agcount=4, agsize=3145728 blks

= sectsz=512 attr=2, projid32bit=1

= crc=1 finobt=1, sparse=1, rmapbt=1

= reflink=1 bigtime=1 inobtcount=1 nrext64=1

= exchange=0 metadir=0

data = bsize=4096 blocks=12582912, imaxpct=25

= sunit=0 swidth=0 blks

naming =version 2 bsize=4096 ascii-ci=0, ftype=1, parent=0

log =internal log bsize=4096 blocks=16384, version=2

= sectsz=512 sunit=0 blks, lazy-count=1

realtime =none extsz=4096 blocks=0, rtextents=0

= rgcount=0 rgsize=0 extents

data blocks changed from 12582912 to 131071744

root@Gitea:~# df -h

Filesystem Size Used Avail Use% Mounted on

udev 960M 0 960M 0% /dev

tmpfs 198M 452K 197M 1% /run

/dev/sda1 500G 11G 490G 3% /

tmpfs 987M 0 987M 0% /dev/shm

tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service

tmpfs 5.0M 0 5.0M 0% /run/lock

tmpfs 987M 0 987M 0% /tmp

tmpfs 1.0M 0 1.0M 0% /run/credentials/getty@tty1.service

tmpfs 198M 4.0K 198M 1% /run/user/1000

文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/

二、基于fdisk

# 备份当前分区表
$ sfdisk -d /dev/sda > sda_backup.txt
# 使用 fdisk
$ fdisk /dev/sda文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/
d # 删除分区
5 # 删除交换分区
d # 删除分区
2 # 删除扩展分区
d # 删除分区
1 # 删除主分区文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/
n # 创建新主分区
p # 主分区
1 # 分区号1
# 起始扇区：直接回车（使用默认2048）
# 结束扇区：+536G文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/
n # 创建扩展分区
e # 扩展分区
2 # 分区号2
# 起始扇区：直接回车
# 结束扇区：直接回车（使用所有剩余空间）文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/
n # 创建逻辑分区
# 起始扇区：直接回车
# 结束扇区：直接回车文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/
t # 更改分区类型
5 # 选择分区5
82 # Linux swap文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/
w # 保存并退出文章源自 note.t4x.orgByrd's Blog-https://note.t4x.org/basic/pve-parted-disk/