{"id":2141,"date":"2018-09-26T21:39:40","date_gmt":"2018-09-26T12:39:40","guid":{"rendered":"http:\/\/matoken.org\/blog\/?p=2141"},"modified":"2018-09-26T21:39:40","modified_gmt":"2018-09-26T12:39:40","slug":"mount-qcow2-image","status":"publish","type":"post","link":"https:\/\/matoken.org\/blog\/2018\/09\/26\/mount-qcow2-image\/","title":{"rendered":"qcow2 \u30a4\u30e1\u30fc\u30b8\u3092\u30de\u30a6\u30f3\u30c8"},"content":{"rendered":"<div id=\"preamble\">\n<div class=\"sectionbody\">\n<div id=\"__asciidoctor-preview-1__\" class=\"paragraph\">\n<p>qemu\u3084KVM\u3067\u3088\u304f\u4f7f\u308f\u308c\u308bqcow2\u30a4\u30e1\u30fc\u30b8\u306e\u30de\u30a6\u30f3\u30c8\u3092\u884c\u3044\u307e\u3057\u305f\uff0e<\/p>\n<\/div>\n<div id=\"__asciidoctor-preview-2__\" class=\"listingblock\">\n<div class=\"title\">\u30a4\u30e1\u30fc\u30b8\u306e\u78ba\u8a8d<\/div>\n<div class=\"content\">\n<pre>$ sudo qemu-img info \/var\/lib\/libvirt\/images\/Debian.qcow2\r\nimage: \/var\/lib\/libvirt\/images\/Debian.qcow2\r\nfile format: qcow2\r\nvirtual size: 20G (21474836480 bytes)\r\ndisk size: 20G\r\ncluster_size: 65536\r\nFormat specific information:\r\n\tcompat: 1.1\r\n\tlazy refcounts: true\r\n\trefcount bits: 16\r\n\tcorrupt: false<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-3__\" class=\"listingblock\">\n<div class=\"title\">nbd \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u8aad\u307f\u8fbc\u307f<\/div>\n<div class=\"content\">\n<pre>$ sudo modprobe nbd<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-4__\" class=\"listingblock\">\n<div class=\"title\">qcow2 \u30a4\u30e1\u30fc\u30b8\u306e\u30d0\u30a4\u30f3\u30c9<\/div>\n<div class=\"content\">\n<pre>$ sudo qemu-nbd -c \/dev\/nbd0 \/var\/lib\/libvirt\/images\/Debian.qcow2\r\n$ sudo fdisk -l \/dev\/nbd0\r\n\u30c7\u30a3\u30b9\u30af \/dev\/nbd0: 20 GiB, 21474836480 \u30d0\u30a4\u30c8, 41943040 \u30bb\u30af\u30bf\r\n\u5358\u4f4d: \u30bb\u30af\u30bf (1 * 512 = 512 \u30d0\u30a4\u30c8)\r\n\u30bb\u30af\u30bf\u30b5\u30a4\u30ba (\u8ad6\u7406 \/ \u7269\u7406): 512 \u30d0\u30a4\u30c8 \/ 512 \u30d0\u30a4\u30c8\r\nI\/O \u30b5\u30a4\u30ba (\u6700\u5c0f \/ \u63a8\u5968): 512 \u30d0\u30a4\u30c8 \/ 512 \u30d0\u30a4\u30c8\r\n\u30c7\u30a3\u30b9\u30af\u30e9\u30d9\u30eb\u306e\u30bf\u30a4\u30d7: dos\r\n\u30c7\u30a3\u30b9\u30af\u8b58\u5225\u5b50: 0x3c0808c8\r\n\r\n\u30c7\u30d0\u30a4\u30b9    \u8d77\u52d5 \u958b\u59cb\u4f4d\u7f6e \u7d42\u4e86\u4f4d\u7f6e   \u30bb\u30af\u30bf \u30b5\u30a4\u30ba Id \u30bf\u30a4\u30d7\r\n\/dev\/nbd0p1 *        2048   499711   497664   243M 83 Linux\r\n\/dev\/nbd0p2        501758 41940991 41439234  19.8G  5 \u62e1\u5f35\u9818\u57df\r\n\/dev\/nbd0p5        501760 41940991 41439232  19.8G 83 Linux<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-5__\" class=\"listingblock\">\n<div class=\"title\">kpartx \u3067\u30c7\u30d0\u30a4\u30b9\u30de\u30c3\u30d4\u30f3\u30b0<\/div>\n<div class=\"content\">\n<pre>$ sudo kpartx \/dev\/nbd0\r\nnbd0p1 : 0 497664 \/dev\/nbd0 2048\r\nnbd0p2 : 0 2 \/dev\/nbd0 501758\r\nnbd0p5 : 0 41439232 \/dev\/dm-1 2<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-6__\" class=\"ulist\">\n<ul>\n<li>\n<p><a href=\"https:\/\/matoken.org\/blog\/2017\/04\/12\/try-kpartx-which-makes-it-easy-to-create-device-map-of-disk-image\/\">\u30c7\u30a3\u30b9\u30af\u30a4\u30e1\u30fc\u30b8\u306e\u30c7\u30d0\u30a4\u30b9\u30de\u30c3\u30d7\u304c\u7c21\u5358\u306b\u4f5c\u308c\u308bkpartx\u3092\u8a66\u3059 \u2013 matoken\u2019s meme<\/a><\/p>\n<\/li>\n<\/ul>\n<\/div>\n<div id=\"__asciidoctor-preview-7__\" class=\"listingblock\">\n<div class=\"title\">dm-crypt \u3067\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u30c7\u30d0\u30a4\u30b9\u3092\u30aa\u30fc\u30d7\u30f3<\/div>\n<div class=\"content\">\n<pre>$ sudo cryptsetup open \/dev\/nbd0p5 crypt\r\nEnter passphrase for \/dev\/nbd0p5:<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-8__\" class=\"listingblock\">\n<div class=\"title\">lvm\u9818\u57df\u306a\u306e\u3067\u30b9\u30ad\u30e3\u30f3\u3059\u308b<\/div>\n<div class=\"content\">\n<pre>$ sudo lvmdiskscan\r\n    :\r\n  \/dev\/mapper\/crypt                                     [     &lt;19.76 GiB] LVM physical volume\r\n  \/dev\/nbd0p5                                           [     &lt;19.76 GiB]\r\n  \/dev\/debian-vg\/root                                   [      18.75 GiB]\r\n  \/dev\/debian-vg\/swap_1                                 [       1.00 GiB]\r\n    :<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-9__\" class=\"listingblock\">\n<div class=\"title\">\u30de\u30a6\u30f3\u30c8\u3057\u3066\u5185\u5bb9\u78ba\u8a8d<\/div>\n<div class=\"content\">\n<pre>$ sudo mount -o ro \/dev\/debian-vg\/root \/mnt\r\n$ ls \/mnt\/\r\nbin   dev  home        initrd.img.old  lib64       media  opt   root  sbin  sys  usr  vmlinuz\r\nboot  etc  initrd.img  lib             lost+found  mnt    proc  run   srv   tmp  var  vmlinuz.old<\/pre>\n<\/div>\n<\/div>\n<div id=\"__asciidoctor-preview-10__\" class=\"ulist\">\n<div class=\"title\">\u3053\u3046\u3044\u3046\u3082\u306e\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u672a\u78ba\u8a8d<\/div>\n<ul>\n<li>\n<p><a href=\"https:\/\/github.com\/vasi\/qcow2-fuse\">vasi\/qcow2-fuse: Gain access to qcow2 virtual disk images as a user-space filesystem<\/a><\/p>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div id=\"toc\" class=\"toc\">\n<div id=\"toctitle\">Table of Contents<\/div>\n<ul class=\"sectlevel1\">\n<li><a href=\"#_\u74b0\u5883\">\u74b0\u5883<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"sect1\">\n<h2 id=\"_\u74b0\u5883\">\u74b0\u5883<\/h2>\n<div class=\"sectionbody\">\n<div id=\"__asciidoctor-preview-11__\" class=\"listingblock\">\n<div class=\"content\">\n<pre>$ dpkg-query -W kpartx qemu-utils fdisk cryptsetup lvm2 mount linux-image-`uname -r`\r\ncryptsetup      2:2.0.4-2\r\nfdisk   2.32.1-0.1\r\nkpartx  0.7.7-1\r\nlinux-image-4.18.0-1-amd64      4.18.8-1\r\nlvm2    2.02.176-4.1\r\nmount   2.32.1-0.1\r\nqemu-utils      1:2.12+dfsg-3\r\n$ lsb_release -d\r\nDescription:    Debian GNU\/Linux unstable (sid)\r\n$ uname -m\r\nx86_64<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>qemu\u3084KVM\u3067\u3088\u304f\u4f7f\u308f\u308c\u308bqcow2\u30a4\u30e1\u30fc\u30b8\u306e\u30de\u30a6\u30f3\u30c8\u3092\u884c\u3044\u307e\u3057\u305f\uff0e \u30a4\u30e1\u30fc\u30b8\u306e\u78ba\u8a8d $ sudo qemu-img info \/var\/lib\/libvirt\/images\/Debian.qcow2 image:  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"webmentions_disabled_pings":false,"webmentions_disabled":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[7,6,199],"tags":[410,411,409,310],"class_list":["post-2141","post","type-post","status-publish","format-standard","hentry","category-debian-linux","category-linux","category-sid","tag-kvm","tag-mount","tag-qcow2","tag-qemu"],"_links":{"self":[{"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/posts\/2141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/comments?post=2141"}],"version-history":[{"count":0,"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/posts\/2141\/revisions"}],"wp:attachment":[{"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/media?parent=2141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/categories?post=2141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/matoken.org\/blog\/wp-json\/wp\/v2\/tags?post=2141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}