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update lvm

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xking
2025-07-30 23:25:03 +08:00
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linux/linux使用lvm.md
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@ -22,27 +22,21 @@
逻辑结构大概像是这个样子
```text
|----------| |----------|
| 逻辑卷 LV | | 逻辑卷...|
|----------| |----------|
| |
\ /
|-----------|
| 卷组 VG |
|-----------|
/ \
| |
|----------| |----------|
| 物理卷 PV | | 物理卷...|
|----------| |----------|
```mermaid
graph TB
A(逻辑卷 LV) --> B(卷组 VG)
C(逻辑卷...) --> B
B --> D(物理卷 PV)
B --> E(物理卷...)
```
A(逻辑卷 LV) --> B(卷组 VG)
C(逻辑卷...) --> B
B --> D[物理卷 PV]
B --> E[物理卷...]
D --> F[物理区域 PE]
D --> G[物理区域...]
E --> H[物理区域 PE]
E --> I[物理区域...]
classDef node fill:#f9f,stroke:#333,stroke-width:2px;
classDef pe fill:#6af,stroke:#333,stroke-width:1.5px,dashed;
class F,G,H,I pe;
```
> 我们并不需要太过关心 PE
记好这三层的缩写 我们待会要把这三层定义和创建出来。
@ -107,6 +101,7 @@ vgscan
# 格式化逻辑卷
mkfs -t ext4 /dev/vg_demo/lv_demo
mkfs.xfs /dev/vg_demo/lv_demo
# 创建待挂载目录
mkdir /demo
@ -151,6 +146,8 @@ resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv # ext4
xfs_growfs /dev/mapper/ubuntu--vg-ubuntu--lv # XFS
```
### lsblk 命令
查看硬盘信息
@ -175,7 +172,3 @@ sr0 11:0 1 1024M 0 rom
```
[wayne-programming-studio-wiki]: https://wiki-wayne.surge.sh/#/os/lvm "lvm"