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lvconvert で "Unable to allocate extents for mirror" エラーになります

Solution Verified - Updated -

Issue

  • lvconvert を使用してリニアボリュームをミラーボリュームに変換すると、次のエラーが表示されます。

    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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