{"id":811,"date":"2009-11-09T16:45:18","date_gmt":"2009-11-09T15:45:18","guid":{"rendered":"http:\/\/cyberelk.net\/tim\/?p=811"},"modified":"2014-05-20T09:07:27","modified_gmt":"2014-05-20T08:07:27","slug":"mapping-encrypted-volume-groups-to-disk-partitions","status":"publish","type":"post","link":"https:\/\/cyberelk.net\/tim\/2009\/11\/09\/mapping-encrypted-volume-groups-to-disk-partitions\/","title":{"rendered":"Mapping encrypted volume groups to disk partitions"},"content":{"rendered":"<p>I&#8217;m about to try installing a Fedora 12 test image onto the spare disk partition in this computer, but it&#8217;s taken me a while to work out which partition actually is spare.  The reason: most of my filesystems are in logical volumes on LUKS-encrypted devices.<\/p>\n<p>So, for my own reference as much as anything else, here is how to map an encrypted logical volume back to an actual disk partition.<\/p>\n<p><!--more--><\/p>\n<p>Take a look at the mounted devices with &#8220;mount&#8221;.\u00a0 In my case, I can see that <tt>\/dev\/mapper\/vg_worm01-LogVol00<\/tt> is mounted at the filesystem root <tt>\/<\/tt>.\u00a0 This logical volume belongs to a volume group <tt>vg_worm01<\/tt> (it&#8217;s right there in the name).<\/p>\n<p>Next, take a look at which physical volumes are collected into this volume group using &#8220;pvdisplay&#8221;.\u00a0 For me, that&#8217;s just one: <tt>\/dev\/dm-1<\/tt>.<\/p>\n<p>Finally, &#8220;cryptsetup status \/dev\/dm-1&#8221; says which actual device underlies the whole lot: <tt>\/dev\/sda3<\/tt>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m about to try installing a Fedora 12 test image onto the spare disk partition in this computer, but it&#8217;s taken me a while to work out which partition actually is spare. The reason: most of my filesystems are in logical volumes on LUKS-encrypted devices. So, for my own reference as much as anything else, [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[27,67,96],"class_list":["post-811","post","type-post","status-publish","format-standard","hentry","category-software","tag-fedora","tag-lvm","tag-software"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mapping encrypted volume groups to disk partitions - PRINT HEAD<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cyberelk.net\/tim\/2009\/11\/09\/mapping-encrypted-volume-groups-to-disk-partitions\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mapping encrypted volume groups to disk partitions - PRINT HEAD\" \/>\n<meta property=\"og:description\" content=\"I&#8217;m about to try installing a Fedora 12 test image onto the spare disk partition in this computer, but it&#8217;s taken me a while to work out which partition actually is spare. The reason: most of my filesystems are in logical volumes on LUKS-encrypted devices. 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