fdisk -l 顯示 500GB，df -h 顯示 240GB

在增加我的 centos 虛擬機的磁碟空間後（在 esxi 管理程序中）

當我執行 fdsik

[root@sopiqecommerce ~]# fdisk -l

Disk /dev/sda: 504.7 GB, 504658657280 bytes, 985661440 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000bd0c1

  Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200   985661439   491781120   8e  Linux LVM

Disk /dev/mapper/centos-root: 241.7 GB, 241721933824 bytes, 472113152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/centos-swap: 4160 MB, 4160749568 bytes, 8126464 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/centos-home: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

當我執行 df -h 時：

[root@sopiqecommerce ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root  226G  106G  120G  48% /
devtmpfs                 2.9G     0  2.9G   0% /dev
tmpfs                    2.9G     0  2.9G   0% /dev/shm
tmpfs                    2.9G  8.8M  2.9G   1% /run
tmpfs                    2.9G     0  2.9G   0% /sys/fs/cgroup
/dev/sda1               1014M  186M  829M  19% /boot
/dev/mapper/centos-home   20G   33M   20G   1% /home
tmpfs                    581M     0  581M   0% /run/user/0

我使用 gparted 向磁碟添加 200 GB

使用未分配的 200gb 是否缺少任何配置？

$$ update $$ 當我執行 lvdisplay ：

[root@sopiqecommerce ~]# lvdisplay
 --- Logical volume ---
 LV Path                /dev/centos/swap
 LV Name                swap
 VG Name                centos
 LV UUID                S40JP2-OofD-BRls-TeFj-uP6g-aBuh-mjKHyP
 LV Write Access        read/write
 LV Creation host, time sopiqecommerce, 2019-02-19 14:55:47 +0100
 LV Status              available
 # open                 2
 LV Size                <3.88 GiB
 Current LE             992
 Segments               1
 Allocation             inherit
 Read ahead sectors     auto
 - currently set to     8192
 Block device           253:1

 --- Logical volume ---
 LV Path                /dev/centos/root
 LV Name                root
 VG Name                centos
 LV UUID                rHtm3b-0dqp-PXvF-OAaS-rLzR-TeW5-7E21cd
 LV Write Access        read/write
 LV Creation host, time sopiqecommerce, 2019-02-19 14:55:47 +0100
 LV Status              available
 # open                 1
 LV Size                225.12 GiB
 Current LE             57631
 Segments               4
 Allocation             inherit
 Read ahead sectors     auto
 - currently set to     8192
 Block device           253:0

 --- Logical volume ---
 LV Path                /dev/centos/home
 LV Name                home
 VG Name                centos
 LV UUID                g33dwM-E1cZ-G6BM-2OP1-ilap-yS7k-ABU5Po
 LV Write Access        read/write
 LV Creation host, time sopiqecommerce, 2019-02-23 13:22:22 +0100
 LV Status              available
 # open                 1
 LV Size                20.00 GiB
 Current LE             5120
 Segments               1
 Allocation             inherit
 Read ahead sectors     auto
 - currently set to     8192
 Block device           253:2

我應該執行lvextend -l+100%FREE /dev/mapper/centos-root，以增加 /root 分區嗎？

很可能您正在使用 LVM 磁碟，因此您還需要擴展邏輯卷。

你需要執行：

lvdisplay

找到要添加空間的邏輯卷，然後執行以下命令：

lvextend -l+100%FREE /dev/full/path/here

完成後，您還需要執行：

resize2fs /dev/full/path/here

df -h 現在應該顯示正確的大小

引用自：https://serverfault.com/questions/984188