1.在PVE中选中硬盘，点击磁盘操作。
2.点击调整大小。注意：只能扩充磁盘无法缩小磁盘。
3.给分区增加空间。
root@infski:~# fdisk -l
Disk /dev/sda: 648 GiB, 695784701952 bytes, 1358954496 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: 0x1581124e
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 629143551 629141504 300G 83 Linux可以看到目前我的/dev/sda1只有300G，而分配的硬盘有648G。我需要给/dev/sda1扩充大小。
parted /dev/sdaroot@infski:~# parted /dev/sda
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) 输入print，输出分区。
root@infski:~# parted /dev/sda
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 696GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 322GB 322GB primary ext4 boot
(parted) 输入resizepart 1调整1号分区，如果需要调整2号分区就输入resizepart 2。我这里只有1个分区。
root@infski:~# parted /dev/sda
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 696GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 322GB 322GB primary ext4 boot
(parted) resizepart 1
Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? yes 因为我只有一个分区，而且这个分区再被使用，会提示Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? 输入yes即可。
root@infski:~# parted /dev/sda
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 696GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 322GB 322GB primary ext4 boot
(parted) resizepart 1
Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? yes
End? [322GB]? 我需要分配所有的空间，所以我这输入100%。
root@infski:~# parted /dev/sda
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 696GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 322GB 322GB primary ext4 boot
(parted) resizepart 1
Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? yes
End? [322GB]? 100%
(parted) 输入quit退出。
root@infski:~# parted /dev/sda
GNU Parted 3.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 696GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 322GB 322GB primary ext4 boot
(parted) resizepart 1
Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?
Yes/No? yes
End? [322GB]? 100%
(parted) quit
Information: You may need to update /etc/fstab.然后需要重新计算大小。
resize2fs /dev/sda1root@infski:~# resize2fs /dev/sda1
resize2fs 1.44.5 (15-Dec-2018)
Filesystem at /dev/sda1 is mounted on /; on-line resizing required
old_desc_blocks = 38, new_desc_blocks = 81
The filesystem on /dev/sda1 is now 169869056 (4k) blocks long.
root@zinoin:~# fdisk -l
Disk /dev/sda: 648 GiB, 695784701952 bytes, 1358954496 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: 0x1581124e
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 1358954495 1358952448 648G 83 Linux这样硬盘扩容就完成了。