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https://khws4v1.myhome.cx/article/2018/12/ubuntu-18-10%e3%81%a7lvm%e3%81%8c%e5%8b%95%e3%81%8b%e3%81%aa%e3%81%8f%e3%81%aa%e3%81%a3%e3%81%9f/
Ubuntu 18.10でLVMが動かなくなった