目录一、LVM 核心原理1. 核心组件及关系2. LVM 的核心优势二、LVM 配置步骤（基础流程）步骤 1：准备逻辑分区步骤 2：创建物理卷（PV）步骤 3：创建卷组（VG）步骤 4：创建逻辑卷（LV）步骤 5：格式化 LV 并挂载三、
I am trying to print the stack trace of the exception. However, for negative test case, only the unexpected exception is printed.
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