いろいろ試行錯誤の結果，うまくいきました．仮想マシンのKernelでvirtio_scsiが必要です．Kernelに焼き込んでも良いのですが，一応initrdにしました．例によって，依存のある他のmoduleを順序正しくloadする必要があります．とりあえずうまくいったのはこの順番でロードしました．<\/p>\n
virtio.ko\nvirtio_ring.ko\nvirtio_pci.ko\nvirtio_scsi.ko<\/pre>\nvirtio_pciが必要なのかどうかは解りません．まあ，動けば良いんです^^;<\/p>\n
virt-managerで既存のディスクとして，ホストで見たとおり，\/dev\/sde等として追加登録します．<\/p>\n
ゲスト（仮想マシン）のkernelがvirtioをサポートしていれば，2番目のディスクならば\/dev\/sdbとして見えます．あとは，fstab等の修正をすれば良いわけです．<\/p>\n
この起動可能な外付けディスクは，一部設定を変えれば，仮想マシンでなく，実マシンのboot driveとしても使えますね．<\/p>\n
これで可能性が非常に広がりました．<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3044\u308d\u3044\u308d\u8a66\u884c\u932f\u8aa4\u306e\u7d50\u679c\uff0c\u3046\u307e\u304f\u3044\u304d\u307e\u3057\u305f\uff0e\u4eee\u60f3\u30de\u30b7\u30f3\u306eKernel\u3067virtio_scsi\u304c\u5fc5\u8981\u3067\u3059\uff0eKernel\u306b\u713c\u304d\u8fbc\u3093\u3067\u3082\u826f\u3044\u306e\u3067\u3059\u304c\uff0c\u4e00\u5fdcinitrd\u306b\u3057\u307e\u3057\u305f\uff0e\u4f8b\u306b\u3088\u3063\u3066\uff0c\u4f9d\u5b58\u306e\u3042\u308b\u4ed6\u306emodule\u3092\u9806\u5e8f\u6b63\u3057\u304fload\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff0e\u3068\u308a\u3042\u3048\u305a\u3046\u307e\u304f\u3044\u3063\u305f\u306e\u306f\u3053\u306e\u9806\u756a\u3067\u30ed\u30fc\u30c9\u3057\u307e\u3057\u305f\uff0e virtio.ko virtio_ring.ko virtio_pci.ko virtio_scsi.ko virtio_pci\u304c\u5fc5\u8981\u306a\u306e\u304b\u3069\u3046\u304b\u306f\u89e3\u308a\u307e\u305b\u3093\uff0e\u307e\u3042\uff0c\u52d5\u3051\u3070\u826f\u3044\u3093\u3067\u3059^^; virt-manager\u3067\u65e2\u5b58\u306e\u30c7\u30a3\u30b9\u30af\u3068\u3057\u3066\uff0c\u30db\u30b9\u30c8\u3067\u898b\u305f\u3068\u304a\u308a\uff0c\/dev\/sde\u7b49\u3068\u3057\u3066\u8ffd\u52a0\u767b\u9332\u3057\u307e\u3059\uff0e \u30b2\u30b9\u30c8\uff08\u4eee\u60f3\u30de\u30b7\u30f3\uff09\u306ekernel\u304cvirtio\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308c\u3070\uff0c2\u756a\u76ee\u306e\u30c7\u30a3\u30b9\u30af\u306a\u3089\u3070\/dev\/sdb\u3068\u3057\u3066\u898b\u3048\u307e\u3059\uff0e\u3042\u3068\u306f\uff0cfstab\u7b49\u306e\u4fee\u6b63\u3092\u3059\u308c\u3070\u826f\u3044\u308f\u3051\u3067\u3059\uff0e \u3053\u306e\u8d77\u52d5\u53ef\u80fd\u306a\u5916\u4ed8\u3051\u30c7\u30a3\u30b9\u30af\u306f\uff0c\u4e00\u90e8\u8a2d\u5b9a\u3092\u5909\u3048\u308c\u3070\uff0c\u4eee\u60f3\u30de\u30b7\u30f3\u3067\u306a\u304f\uff0c\u5b9f\u30de\u30b7\u30f3\u306eboot drive\u3068\u3057\u3066\u3082\u4f7f\u3048\u307e\u3059\u306d\uff0e \u3053\u308c\u3067\u53ef\u80fd\u6027\u304c\u975e\u5e38\u306b\u5e83\u304c\u308a\u307e\u3057\u305f\uff0e<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"","footnotes":""},"categories":[21,8],"tags":[260],"class_list":["post-3610","post","type-post","status-publish","format-standard","hentry","category-kvm","category-linux","tag-kernel"],"publishpress_future_action":{"enabled":false,"date":"2026-04-14 22:03:21","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/3610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3610"}],"version-history":[{"count":0,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/3610\/revisions"}],"wp:attachment":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}