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lvconvert执行失败，报错“Unable to allocate extents for mirror”

Solution Verified - Updated -

Issue

  • 使用lvconvert命令转换一个线性volume到一个镜像的volume，报如下错误

    lvconvert -m1 testvg/testlv1

Insufficient suitable allocatable extents for logical volume : 4094 more required 

Unable to allocate extents for mirror(s).

Environment

  • Red Hat Enterprise Linux

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