免费甲骨文云服务器(Oracle Cloud) 快速增加硬盘空间大小到200G，不用重启

sblk // 查看分区

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 38.7M 1 loop loop1 7:1 0 59.6M 1 loop /snap/core20/2603 loop2 7:2 0 49.1M 1 loop /snap/core18/2938 loop3 7:3 0 49.1M 1 loop /snap/core18/2925 loop5 7:5 0 44.3M 1 loop /snap/snapd/24724 loop6 7:6 0 92M 1 loop /snap/lxd/29631 loop7 7:7 0 92M 1 loop /snap/lxd/32669 loop8 7:8 0 59.6M 1 loop loop9 7:9 0 59.6M 1 loop /snap/core20/2585 loop10 7:10 0 42.9M 1 loop /snap/snapd/24787 sda 8:0 0 200G 0 disk ├─sda1 8:1 0 99.9G 0 part / └─sda15 8:15 0 99M 0 part /boot/efi 

sdb 8:16 0 100G 0 disk 

sudo fdisk -l /dev/sda // 查看磁盘大小

GPT PMBR size mismatch (209715199 != 419430399) will be corrected by write. The backup GPT table is not on the end of the device. This problem will be corrected by write. Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectors Disk model: BlockVolume Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 1048576 bytes Disklabel type: gpt Disk identifier: 6154E9D3-A4DC-4E19-ACF5-AD9852DB09F6 Device Start End Sectors Size Type /dev/sda1 206848 209715166 209508319 99.9G Linux filesystem /dev/sda15 2048 204800 202753 99M EFI System Partition table entries are not in disk order.

关键信息：

• 物理磁盘：200 GiB (419,430,400 sectors)
• 当前 GPT 表：只认为磁盘有 209,715,199 sectors（约 100G）
• 磁盘被扩容了，但分区表没有更新

使用 fdisk 修复

# 修复 GPT 表 sudo fdisk /dev/sda # 输入 w 保存（这会自动修复 GPT 表大小） # 然后扩展分区 

sudo growpart /dev/sda 1 

sudo resize2fs /dev/sda1

df -h

Filesystem Size Used Avail Use% Mounted on udev 12G 0 12G 0% /dev tmpfs 2.4G 226M 2.2G 10% /run /dev/sda1 194G 49G 145G 26% /