系统环境
- Centos7.5
查看现有磁盘信息
centos1@root ➜ ~ df -Th
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root xfs 6.2G 5.8G 491M 93% /
devtmpfs devtmpfs 485M 0 485M 0% /dev
tmpfs tmpfs 496M 0 496M 0% /dev/shm
tmpfs tmpfs 496M 6.7M 490M 2% /run
tmpfs tmpfs 496M 0 496M 0% /sys/fs/cgroup
/dev/sda1 xfs 1014M 158M 857M 16% /boot
tmpfs tmpfs 100M 0 100M 0% /run/user/0
centos1@root ➜ ~ fdisk -l /dev/sda
磁盘 /dev/sda：21.0 GB, 20971520000 字节，40960000 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x000bdbdc
设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 16777215 7339008 8e Linux LVM
修改虚拟机磁盘VDI的大小
在宿主机上先修改vdi存储大小
- 查询uuid
VBoxManage list hdds
- 修改大小
VBoxManage modifyhd <UUID> --resize 20000
查看新增加的磁盘信息
centos1@root ➜ ~ fdisk -l /dev/sda
磁盘 /dev/sda：21.0 GB, 20971520000 字节，40960000 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x000bdbdc
设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 16777215 7339008 8e Linux LVM
/dev/sda3 16777216 40959999 12091392 8e Linux LVM
Enable新增加的空间
centos1@root ➜ ~ fdisk /dev/sda
欢迎使用 fdisk (util-linux 2.23.2)。
更改将停留在内存中，直到您决定将更改写入磁盘。
使用写入命令前请三思。
命令(输入 m 获取帮助)：n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
分区号 (3,4，默认 3)：3
起始 扇区 (16777216-40959999，默认为 16777216)：
将使用默认值 16777216
Last 扇区, +扇区 or +size{K,M,G} (16777216-40959999，默认为 40959999)：
将使用默认值 40959999
分区 3 已设置为 Linux 类型，大小设为 11.5 GiB
命令(输入 m 获取帮助)：t
分区号 (1-3，默认 3)：3
Hex 代码(输入 L 列出所有代码)：8e
已将分区“Linux”的类型更改为“Linux LVM”
命令(输入 m 获取帮助)：w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: 设备或资源忙.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
正在同步磁盘。
查看结果
centos1@root ➜ ~ fdisk -l /dev/sda
磁盘 /dev/sda：21.0 GB, 20971520000 字节，40960000 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x000bdbdc
设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 16777215 7339008 8e Linux LVM
/dev/sda3 16777216 40959999 12091392 8e Linux LVM
centos1@root ➜ ~ lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root centos -wi-ao---- <6.20g
swap centos -wi-ao---- 820.00m
centos1@root ➜ ~ pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 centos lvm2 a-- <7.00g 0
检查新增空间是否存在
不存在则对机器进行重启，存在则不用做任何操作
centos1@root ➜ ~ ls -l /dev/sda3
ls: 无法访问/dev/sda3: 没有那个文件或目录
centos1@root ➜ ~ shutdown -r now
Connection to x.x.x.x closed by remote host.
Connection to x.x.x.x closed.
seekplum ➜ ~ ssh centos1
Last login: Fri Aug 2 08:31:47 2019 from x.x.x.x
centos1@root ➜ ~ ls -l /dev/sda3
brw-rw----. 1 root disk 8, 3 8月 2 08:36 /dev/sda3
centos1@root ➜ ~
创建物理卷
centos1@root ➜ ~ pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created.
查看物理卷信息
当 vgdisplay 查询为空时，直接进入 调整卷分区大小
centos1@root ➜ ~ pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name centos
PV Size <7.00 GiB / not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 1791
Free PE 0
Allocated PE 1791
PV UUID 2fdldQ-kw3f-1i2U-rpXP-m7R0-TyoK-3zOhlu
"/dev/sda3" is a new physical volume of "11.53 GiB"
--- NEW Physical volume ---
PV Name /dev/sda3
VG Name
PV Size 11.53 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID MLV9qE-wrF6-U3Qd-dd82-QBNP-pMsn-J9PJCk
centos1@root ➜ ~ vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size <7.00 GiB
PE Size 4.00 MiB
Total PE 1791
Alloc PE / Size 1791 / <7.00 GiB
Free PE / Size 0 / 0
VG UUID uE6r1H-Y744-tNjN-9X0K-A8jk-EmwL-vIRLKU
将新增加的空间/dev/sda3加入到根目录分区centos中
centos1@root ➜ ~ vgextend centos /dev/sda3
Volume group "centos" successfully extended
重新查看卷组信息
centos1@root ➜ ~ vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 18.52 GiB
PE Size 4.00 MiB
Total PE 4742
Alloc PE / Size 1791 / <7.00 GiB
Free PE / Size 2951 / <11.53 GiB
VG UUID uE6r1H-Y744-tNjN-9X0K-A8jk-EmwL-vIRLKU
进行卷扩容
centos1@root ➜ ~ lvextend -l +100%FREE /dev/mapper/centos-root
Size of logical volume centos/root changed from <6.59 GiB (1686 extents) to 17.72 GiB (4537 extents).
Logical volume centos/root successfully resized.
调整卷分区大小
CentOS
当 vgdisplay 查询为空时，直接执行该命令执行
centos1@root ➜ ~ xfs_growfs /dev/mapper/centos-root
meta-data=/dev/mapper/centos-root isize=512 agcount=5, agsize=406016 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=1726464, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 1726464 to 4645888
Ubuntu
ubuntu2@root ➜ ~ resize2fs /dev/mapper/ubuntu1--vg-root
resize2fs 1.42.13 (17-May-2015)
Filesystem at /dev/mapper/ubuntu1--vg-root is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 2
The filesystem on /dev/mapper/ubuntu1--vg-root is now 4680704 (4k) blocks long.
ubuntu2@root ➜ ~ df -hl
Filesystem Size Used Avail Use% Mounted on
udev 3.0G 0 3.0G 0% /dev
tmpfs 602M 8.2M 594M 2% /run
/dev/mapper/ubuntu1--vg-root 18G 5.1G 12G 31% /
tmpfs 3.0G 0 3.0G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 3.0G 0 3.0G 0% /sys/fs/cgroup
/dev/sda1 720M 58M 625M 9% /boot
tmpfs 602M 0 602M 0% /run/user/0
查看磁盘信息
centos1@root ➜ ~ df -Th
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root xfs 18G 5.8G 13G 33% /
devtmpfs devtmpfs 485M 0 485M 0% /dev
tmpfs tmpfs 496M 0 496M 0% /dev/shm
tmpfs tmpfs 496M 6.7M 490M 2% /run
tmpfs tmpfs 496M 0 496M 0% /sys/fs/cgroup
/dev/sda1 xfs 1014M 158M 857M 16% /boot
tmpfs tmpfs 100M 0 100M 0% /run/user/0
