bash
# df -h
Filesystem Size Used Avail Use% Mounted on
tmpfs 388M 1.5M 387M 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 9.8G 4.6G 4.8G 50% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
/dev/sda2 1.8G 131M 1.5G 8% /boot
tmpfs 388M 4.0K 388M 1% /run/user/0关闭虚拟机，扩展虚拟机磁盘20G -> 40G
bash
# fdisk -l
Disk /dev/loop0: 61.96 MiB, 64970752 bytes, 126896 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/loop1: 79.95 MiB, 83832832 bytes, 163736 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/loop2: 63.95 MiB, 67051520 bytes, 130960 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/loop3: 38.83 MiB, 40714240 bytes, 79520 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/loop4: 87.04 MiB, 91267072 bytes, 178256 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
GPT PMBR size mismatch (41943039 != 83886079) will be corrected by write.
Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: VMware Virtual S
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: gpt
Disk identifier: 91EC6098-118C-4906-8BB3-AD80846F74FD
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 3719167 3715072 1.8G Linux filesystem
/dev/sda3 3719168 41940991 38221824 18.2G Linux filesystem
Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 10 GiB, 10737418240 bytes, 20971520 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
bash
# fdisk /dev/sda
Welcome to fdisk (util-linux 2.37.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
GPT PMBR size mismatch (41943039 != 83886079) will be corrected by write.
This disk is currently in use - repartitioning is probably a bad idea.
It's recommended to umount all file systems, and swapoff all swap
partitions on this disk.
Command (m for help): p
Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: VMware Virtual S
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: gpt
Disk identifier: 91EC6098-118C-4906-8BB3-AD80846F74FD
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 3719167 3715072 1.8G Linux filesystem
/dev/sda3 3719168 41940991 38221824 18.2G Linux filesystem
Command (m for help): d
Partition number (1-3, default 3):
Partition 3 has been deleted.
Command (m for help): n
Partition number (3-128, default 3):
First sector (3719168-83886046, default 3719168):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (3719168-83886046, default 83886046):
Created a new partition 3 of type 'Linux filesystem' and of size 38.2 GiB.
Partition #3 contains a LVM2_member signature.
Do you want to remove the signature? [Y]es/[N]o: N
Command (m for help): w
The partition table has been altered.
Syncing disks.
bash
# partprobe /dev/sda
bash
# fdisk -l
Disk /dev/loop0: 61.96 MiB, 64970752 bytes, 126896 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/loop1: 79.95 MiB, 83832832 bytes, 163736 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/loop2: 63.95 MiB, 67051520 bytes, 130960 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/loop3: 38.83 MiB, 40714240 bytes, 79520 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/loop4: 87.04 MiB, 91267072 bytes, 178256 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/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: VMware Virtual S
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: gpt
Disk identifier: 91EC6098-118C-4906-8BB3-AD80846F74FD
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 3719167 3715072 1.8G Linux filesystem
/dev/sda3 3719168 83886046 80166879 38.2G Linux filesystem
Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 10 GiB, 10737418240 bytes, 20971520 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
bash
# pvresize /dev/sda3
Physical volume "/dev/sda3" changed
1 physical volume(s) resized or updated / 0 physical volume(s) not resized
bash
# vgdisplay
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 38.22 GiB
PE Size 4.00 MiB
Total PE 9785
Alloc PE / Size 2560 / 10.00 GiB
Free PE / Size 7225 / 28.22 GiB
VG UUID 6SrU3A-snxw-1Sj7-ncHY-bDHp-zWlC-G5uu1i
bash
# lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
Size of logical volume ubuntu-vg/ubuntu-lv changed from 10.00 GiB (2560 extents) to 38.22 GiB (9785 extents).
Logical volume ubuntu-vg/ubuntu-lv successfully resized.
bash
# resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 5
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 10019840 (4k) blocks long.
bash
# df -h
Filesystem Size Used Avail Use% Mounted on
tmpfs 388M 1.5M 387M 1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv 38G 4.6G 32G 13% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
/dev/sda2 1.8G 131M 1.5G 8% /boot
tmpfs 388M 4.0K 388M 1% /run/user/0