ubuntu LVM disk 命令行给带有extended 扩展分区的磁盘分区扩容
目录说明用parted来调整分区1.进入parted命令行模式2.输入print输出分区结构3.输入resizepart 调整分区大小4.查看调整后结构5.退出parted命令行模式6.更新系统分区输入lsblk查看输入df -hT显示磁盘分区:输入resize2fs命令:重新df -hT命令进行确认：说明虚拟机加了磁盘空间后系统里还要调整一下磁盘空间才可以使用，如果是本地主机那么用GParted
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目录
说明
虚拟机加了磁盘空间后系统里还要调整一下磁盘空间才可以使用，如果是本地主机那么用GParted Live启动盘引导后进行调整很方便。
如图，先调整 /dev/sda2 的容量，再调整/dev/sda5 的容量点应用就可以了。但是有时候无法用启动盘该怎么做呢?
用parted来调整分区
1.进入parted命令行模式
输入命令：
partedGNU Parted 3.3
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)2.输入print输出分区结构
(parted) print
Model: Msft Virtual Disk (scsi)
Disk /dev/sda: 275GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 538MB 537MB primary fat32 boot
2 539MB 275GB 136GB extended
5 539MB 275GB 136GB logical ext4
(parted) 这里可以看到Number 2是Extended扩展分区，后面的Number 5 和 2是一样的，根据前面的GParted图形界面就可以理解分区结构，我们要先调整2的容量后才可以调整5的容量。
3.输入resizepart 调整分区大小
(parted) resizepart
Partition number? 2
Warning: Partition /dev/sda2 is being used. Are you sure you want to continue?
Yes/No? yes
End? [136GB]? -0
(parted) resizepart
Partition number? 5
Warning: Partition /dev/sda5 is being used. Are you sure you want to continue?
Yes/No? yes
End? [136GB]? -0
(parted) quit
Information: You may need to update /etc/fstab.
这里End? [136GB]?后输入了-0 ，代表分配所有剩余空间，也可以输入 100%
注意：这里必须是先2再5，不然会报Error: Can't have overlapping partitions.错误。
4.查看调整后结构
输入print
(parted) print
Model: Msft Virtual Disk (scsi)
Disk /dev/sda: 275GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 538MB 537MB primary fat32 boot
2 539MB 275GB 274GB extended
5 539MB 275GB 274GB logical ext4
(parted) 5.退出parted命令行模式
输入quit
(parted) print
Model: Msft Virtual Disk (scsi)
Disk /dev/sda: 275GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 538MB 537MB primary fat32 boot
2 539MB 275GB 274GB extended
5 539MB 275GB 274GB logical ext4
(parted) quit
Information: You may need to update /etc/fstab.6.更新系统分区
输入lsblk查看
lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
fd0 2:0 1 4K 0 disk
loop0 7:0 0 97.9M 1 loop /snap/core/10583
loop1 7:1 0 98.4M 1 loop /snap/core/10823
loop2 7:2 0 55.4M 1 loop /snap/core18/1944
loop3 7:3 0 55.5M 1 loop /snap/core18/1988
loop4 7:4 0 162.9M 1 loop /snap/gnome-3-28-1804/145
loop5 7:5 0 217.9M 1 loop /snap/gnome-3-34-1804/60
loop6 7:6 0 219M 1 loop /snap/gnome-3-34-1804/66
loop7 7:7 0 64.8M 1 loop /snap/gtk-common-themes/1514
loop8 7:8 0 64.4M 1 loop /snap/gtk-common-themes/1513
loop9 7:9 0 663.1M 1 loop /snap/intellij-idea-community/270
loop10 7:10 0 424.7M 1 loop /snap/pycharm-community/224
loop11 7:11 0 662M 1 loop /snap/intellij-idea-community/273
loop12 7:12 0 51M 1 loop /snap/snap-store/498
loop13 7:13 0 51M 1 loop /snap/snap-store/518
loop14 7:14 0 31.1M 1 loop /snap/snapd/10707
loop15 7:15 0 424.8M 1 loop /snap/pycharm-community/226
loop16 7:16 0 31.1M 1 loop /snap/snapd/11036
sda 8:0 0 256G 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
├─sda2 8:2 0 1K 0 part
└─sda5 8:5 0 255.5G 0 part /可以看到sda/sda5已经是扩容成功了
输入df -hT显示磁盘分区:
df -hTFilesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 919M 0 919M 0% /dev
tmpfs tmpfs 190M 2.6M 187M 2% /run
/dev/sda5 ext4 125G 110G 8.2G 94% /
tmpfs tmpfs 948M 0 948M 0% /dev/shm
tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs tmpfs 948M 0 948M 0% /sys/fs/cgroup
/dev/loop1 squashfs 99M 99M 0 100% /snap/core/10823
/dev/loop0 squashfs 98M 98M 0 100% /snap/core/10583
/dev/loop2 squashfs 56M 56M 0 100% /snap/core18/1944
/dev/loop3 squashfs 56M 56M 0 100% /snap/core18/1988
/dev/loop5 squashfs 218M 218M 0 100% /snap/gnome-3-34-1804/60
/dev/loop4 squashfs 163M 163M 0 100% /snap/gnome-3-28-1804/145
/dev/loop6 squashfs 219M 219M 0 100% /snap/gnome-3-34-1804/66
/dev/loop7 squashfs 65M 65M 0 100% /snap/gtk-common-themes/1514
/dev/loop8 squashfs 65M 65M 0 100% /snap/gtk-common-themes/1513
/dev/loop9 squashfs 664M 664M 0 100% /snap/intellij-idea-community/270
tmpfs tmpfs 7.9G 0 7.9G 0% /www/tmp
/dev/loop10 squashfs 425M 425M 0 100% /snap/pycharm-community/224
/dev/loop11 squashfs 663M 663M 0 100% /snap/intellij-idea-community/273
/dev/loop12 squashfs 52M 52M 0 100% /snap/snap-store/498
/dev/loop13 squashfs 52M 52M 0 100% /snap/snap-store/518
/dev/loop14 squashfs 32M 32M 0 100% /snap/snapd/10707
/dev/loop15 squashfs 425M 425M 0 100% /snap/pycharm-community/226
/dev/loop16 squashfs 32M 32M 0 100% /snap/snapd/11036
/dev/sda1 vfat 511M 4.0K 511M 1% /boot/efi
tmpfs tmpfs 190M 0 190M 0% /run/user/0这里发现容量还是没有变
输入resize2fs命令:
sudo resize2fs /dev/sda5resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/sda5 is mounted on /; on-line resizing required
old_desc_blocks = 16, new_desc_blocks = 32
The filesystem on /dev/sda5 is now 66977280 (4k) blocks long.进行进行刷新。
重新df -hT命令进行确认：
Filesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 919M 0 919M 0% /dev
tmpfs tmpfs 190M 2.6M 187M 2% /run
/dev/sda5 ext4 251G 110G 131G 46% /
tmpfs tmpfs 948M 0 948M 0% /dev/shm
tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs tmpfs 948M 0 948M 0% /sys/fs/cgroup
/dev/loop1 squashfs 99M 99M 0 100% /snap/core/10823
/dev/loop0 squashfs 98M 98M 0 100% /snap/core/10583
/dev/loop2 squashfs 56M 56M 0 100% /snap/core18/1944
/dev/loop3 squashfs 56M 56M 0 100% /snap/core18/1988
/dev/loop5 squashfs 218M 218M 0 100% /snap/gnome-3-34-1804/60
/dev/loop4 squashfs 163M 163M 0 100% /snap/gnome-3-28-1804/145
/dev/loop6 squashfs 219M 219M 0 100% /snap/gnome-3-34-1804/66
/dev/loop7 squashfs 65M 65M 0 100% /snap/gtk-common-themes/1514
/dev/loop8 squashfs 65M 65M 0 100% /snap/gtk-common-themes/1513
/dev/loop9 squashfs 664M 664M 0 100% /snap/intellij-idea-community/270
tmpfs tmpfs 7.9G 0 7.9G 0% /www/tmp
/dev/loop10 squashfs 425M 425M 0 100% /snap/pycharm-community/224
/dev/loop11 squashfs 663M 663M 0 100% /snap/intellij-idea-community/273
/dev/loop12 squashfs 52M 52M 0 100% /snap/snap-store/498
/dev/loop13 squashfs 52M 52M 0 100% /snap/snap-store/518
/dev/loop14 squashfs 32M 32M 0 100% /snap/snapd/10707
/dev/loop15 squashfs 425M 425M 0 100% /snap/pycharm-community/226
/dev/loop16 squashfs 32M 32M 0 100% /snap/snapd/11036
/dev/sda1 vfat 511M 4.0K 511M 1% /boot/efi
tmpfs tmpfs 190M 0 190M 0% /run/user/0可以看到空间已经变大了。
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