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[#]: collector: (lujun9972)
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[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: translator: (geekpi)
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[#]: reviewer: (wxy)
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[#]: reviewer: (wxy)
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[#]: publisher: ( )
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[#]: publisher: (wxy)
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[#]: url: ( )
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[#]: url: (https://linux.cn/article-12740-1.html)
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[#]: subject: (How to Reduce/Shrink LVM’s \(Logical Volume Resize\) in Linux)
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[#]: subject: (How to Reduce/Shrink LVM’s \(Logical Volume Resize\) in Linux)
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[#]: via: (https://www.2daygeek.com/reduce-shrink-decrease-resize-lvm-logical-volume-in-linux/)
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[#]: via: (https://www.2daygeek.com/reduce-shrink-decrease-resize-lvm-logical-volume-in-linux/)
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[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
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[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
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@ -48,7 +48,7 @@ Filesystem Size Used Avail Use% Mounted on
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/dev/mapper/vg01-lv002 100G 15G 85G 12% /testlvm1
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/dev/mapper/vg01-lv002 100G 15G 85G 12% /testlvm1
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```
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```
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### 1)卸载文件系统
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### 卸载文件系统
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使用 `umount` 命令卸载文件系统:
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使用 `umount` 命令卸载文件系统:
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# umount /testlvm1
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# umount /testlvm1
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```
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```
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### 2)检查文件系统是否有任何错误
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### 检查文件系统是否有任何错误
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使用 `e2fsck` 命令检查文件系统是否有错误:
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使用 `e2fsck` 命令检查文件系统是否有错误:
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@ -72,7 +72,7 @@ Pass 5: Checking group summary information
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/dev/mapper/vg01-lv002: 13/6553600 files (0.0% non-contiguous), 12231854/26212352 blocks
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/dev/mapper/vg01-lv002: 13/6553600 files (0.0% non-contiguous), 12231854/26212352 blocks
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```
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```
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### 3)缩小文件系统
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### 缩小文件系统
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下面的命令将把 `testlvm1` 文件系统从 **100GB** 缩小到 **80GB**。
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下面的命令将把 `testlvm1` 文件系统从 **100GB** 缩小到 **80GB**。
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@ -92,7 +92,7 @@ Resizing the filesystem on /dev/mapper/vg01-lv002 to 28321400 (4k) blocks.
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The filesystem on /dev/mapper/vg01-lv002 is now 28321400 blocks long.
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The filesystem on /dev/mapper/vg01-lv002 is now 28321400 blocks long.
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```
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```
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### 4)减少逻辑卷 (LVM) 容量
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### 减少逻辑卷 (LVM) 容量
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现在使用 `lvreduce` 命令缩小逻辑卷(LVM) 的大小。通过下面的命令, `/dev/mapper/vg01-lv002` 将把逻辑卷 (LVM) 从 100GB 缩小到 80GB。
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现在使用 `lvreduce` 命令缩小逻辑卷(LVM) 的大小。通过下面的命令, `/dev/mapper/vg01-lv002` 将把逻辑卷 (LVM) 从 100GB 缩小到 80GB。
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@ -114,7 +114,7 @@ Reducing logical volume lv002 to 80.00 GiB
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Logical volume lv002 successfully resized
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Logical volume lv002 successfully resized
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```
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```
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### 5)可选:检查文件系统是否有错误
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### 可选:检查文件系统是否有错误
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缩减 LVM 后再次检查文件系统是否有错误:
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缩减 LVM 后再次检查文件系统是否有错误:
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@ -130,7 +130,7 @@ Pass 5: Checking group summary information
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/dev/mapper/vg01-lv002: 13/4853600 files (0.0% non-contiguous), 1023185/2021235 blocks
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/dev/mapper/vg01-lv002: 13/4853600 files (0.0% non-contiguous), 1023185/2021235 blocks
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```
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```
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### 6)挂载文件系统并检查缩小后的大小
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### 挂载文件系统并检查缩小后的大小
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最后挂载文件系统,并检查缩小后的文件系统大小。
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最后挂载文件系统,并检查缩小后的文件系统大小。
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