{"id":2238,"date":"2020-12-27T12:46:05","date_gmt":"2020-12-27T11:46:05","guid":{"rendered":"https:\/\/www.nico-maas.de\/?p=2238"},"modified":"2020-12-27T12:46:07","modified_gmt":"2020-12-27T11:46:07","slug":"ubuntu-20-04-update-bricked-kvm-virt","status":"publish","type":"post","link":"https:\/\/www.nico-maas.de\/?p=2238","title":{"rendered":"Ubuntu 20.04 Update bricked KVM Virt"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I updated an older Ubuntu 18.04 LTS system to the latest LTS and had (among other things) Docker and KVM installed. KVM is actually quite nice if you \"just need\" a small VM (pfsense ;)). I actually prefer Proxmox and ESXi, but hey, the right tool for the right job.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After the upgrade to 20.04, kvm did not work anymore and I got a lot of lvm2 errors during <code>apt update<\/code> \/ <code>apt upgrade<\/code> sessions, so a short google later I found <a href=\"https:\/\/askubuntu.com\/questions\/1049727\/every-time-i-install-or-remove-a-package-i-get-lvm2-error\" target=\"_blank\" rel=\"noreferrer noopener\">this<\/a>. I was a bit nervous, but the fix did neither hurt my kvm nor my Docker instances<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo apt purge lvm2 &amp;&amp; sudo apt install lvm2<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">(The fix is deleting and reinstalling lvm2)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After reinstalling lvm2, I could successfully execute a <code>virsh list<\/code> and got my list of running KVM machines back:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"> Id   Name      State\n-------------------------\n 1    pfsense   running\n<\/pre>\n<div class=\"shariff shariff-align-left shariff-widget-align-left\"><ul class=\"shariff-buttons theme-round orientation-horizontal buttonsize-small\"><li class=\"shariff-button printer shariff-nocustomcolor\" style=\"background-color:#a8a8a8\"><a href=\"javascript:window.print()\" title=\"print\" aria-label=\"print\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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KVM is actually quite nice if you \"just need\" a small VM (pfsense ;)). I actually prefer Proxmox and ESXi, but hey, the right tool for the right job. After the upgrade to 20.04, &hellip; <a href=\"https:\/\/www.nico-maas.de\/?p=2238\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Ubuntu 20.04 Update bricked KVM Virt<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n<div class=\"shariff shariff-align-left shariff-widget-align-left\"><ul class=\"shariff-buttons theme-round orientation-horizontal buttonsize-small\"><li class=\"shariff-button printer shariff-nocustomcolor\" style=\"background-color:#a8a8a8\"><a href=\"javascript:window.print()\" title=\"print\" aria-label=\"print\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; background-color:#999; color:#fff\"><span class=\"shariff-icon\" style=\"\"><svg width=\"32px\" height=\"20px\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 30 32\"><path fill=\"#999\" d=\"M6.8 27.4h16v-4.6h-16v4.6zM6.8 16h16v-6.8h-2.8q-0.7 0-1.2-0.5t-0.5-1.2v-2.8h-11.4v11.4zM27.4 17.2q0-0.5-0.3-0.8t-0.8-0.4-0.8 0.4-0.3 0.8 0.3 0.8 0.8 0.3 0.8-0.3 0.3-0.8zM29.7 17.2v7.4q0 0.2-0.2 0.4t-0.4 0.2h-4v2.8q0 0.7-0.5 1.2t-1.2 0.5h-17.2q-0.7 0-1.2-0.5t-0.5-1.2v-2.8h-4q-0.2 0-0.4-0.2t-0.2-0.4v-7.4q0-1.4 1-2.4t2.4-1h1.2v-9.7q0-0.7 0.5-1.2t1.2-0.5h12q0.7 0 1.6 0.4t1.3 0.8l2.7 2.7q0.5 0.5 0.9 1.4t0.4 1.6v4.6h1.1q1.4 0 2.4 1t1 2.4z\"\/><\/svg><\/span><\/a><\/li><li class=\"shariff-button mailto shariff-nocustomcolor\" style=\"background-color:#a8a8a8\"><a href=\"mailto:?body=https%3A%2F%2Fwww.nico-maas.de%2F%3Fp%3D2238&subject=Ubuntu%2020.04%20Update%20bricked%20KVM%20Virt\" title=\"Send by email\" aria-label=\"Send by email\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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December 2020","format":false,"excerpt":"kvm Virtualisiation is great, however, useable tools to create and manage said VMs are rare. The best tool for the job, virt-manager is only available for Linux machines. But what if you want to manage said VMs also via Windows 10? WSL2 to the rescue: Just install WSL2 as shown\u2026","rel":"","context":"In &quot;Unix \\ Linux&quot;","block_context":{"text":"Unix \\ Linux","link":"https:\/\/www.nico-maas.de\/?cat=18"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1187,"url":"https:\/\/www.nico-maas.de\/?p=1187","url_meta":{"origin":2238,"position":1},"title":"[Ubuntu] Install Docker","author":"Nico Maas","date":"14. January 2016","format":false,"excerpt":"This is a short guide to install the recent Docker Version from the official ppa on Ubuntu 14.04 LTS - along with some other great tools like docker-compose. Please bear in mind, that Docker needs an 64 Bit System to work with :)! So no i686 plattforms from here on.\u2026","rel":"","context":"In &quot;Docker&quot;","block_context":{"text":"Docker","link":"https:\/\/www.nico-maas.de\/?cat=531"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1705,"url":"https:\/\/www.nico-maas.de\/?p=1705","url_meta":{"origin":2238,"position":2},"title":"Upgrade WSL (Windows Subsystem for Linux) on Windows 10","author":"Nico Maas","date":"20. September 2017","format":false,"excerpt":"I had installed WSL (Windows Subsystem for Linux) a long time ago to gain access to Ubuntu 14.04 LTS directly from my Windows 10 Desktop. However, as time passes, Software grows old. Upgrading the Ubuntu Subsystem via apt-get update \/ do-release-upgrade should work, but that could have some nasty sideeffects,\u2026","rel":"","context":"In &quot;Unix \\ Linux&quot;","block_context":{"text":"Unix \\ Linux","link":"https:\/\/www.nico-maas.de\/?cat=18"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1760,"url":"https:\/\/www.nico-maas.de\/?p=1760","url_meta":{"origin":2238,"position":3},"title":"[Dell] T30 Intel AMT Blank Screen on Ubuntu Fix","author":"Nico Maas","date":"17. November 2017","format":false,"excerpt":"The Dell T30 is an awesome little Homeserver, packing a punch with the Xeon E3-1225 V5 - and being affordable at about 399 \u20ac. It also comes with Intels Active Management Technology \/ AMT which is an extension of the horrible Intel Mangement Engine (which was all over the place\u2026","rel":"","context":"In &quot;Network&quot;","block_context":{"text":"Network","link":"https:\/\/www.nico-maas.de\/?cat=32"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2145,"url":"https:\/\/www.nico-maas.de\/?p=2145","url_meta":{"origin":2238,"position":4},"title":"Upgrade SonarQube 6.7 to 7.9","author":"Nico Maas","date":"22. January 2020","format":false,"excerpt":"That was surprisingly easy: Just swaped the \"sonarqube:6.7-community\" for the \"sonarqube:7.9-community\" image entry in my docker-compose.yml and restarted the Docker container. Upon boot, the container restarted due to an error: ERROR: [2] bootstrap checks failed[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535][2]:\u2026","rel":"","context":"In &quot;Product Specific&quot;","block_context":{"text":"Product Specific","link":"https:\/\/www.nico-maas.de\/?cat=78"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1664,"url":"https:\/\/www.nico-maas.de\/?p=1664","url_meta":{"origin":2238,"position":5},"title":"[resinOS] Build resinOS from scratch","author":"Nico Maas","date":"28. June 2017","format":false,"excerpt":"As the time of writing, resinOS is available for Download\u00a0at Version 2.0.6+rev3.dev for Raspberry Pi 3. This build, however, is nearly 2 weeks old and in the meantime, something great happend: Docker has finally updated to Version 17.03.1 - upgraded from the old ~10 (ten-ish) version - which was not\u2026","rel":"","context":"In &quot;Docker&quot;","block_context":{"text":"Docker","link":"https:\/\/www.nico-maas.de\/?cat=531"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=\/wp\/v2\/posts\/2238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2238"}],"version-history":[{"count":2,"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=\/wp\/v2\/posts\/2238\/revisions"}],"predecessor-version":[{"id":2240,"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=\/wp\/v2\/posts\/2238\/revisions\/2240"}],"wp:attachment":[{"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nico-maas.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}