{"id":714,"date":"2026-05-31T14:45:03","date_gmt":"2026-05-31T12:45:03","guid":{"rendered":"https:\/\/www.familie-kleinman.nl\/brain\/?p=714"},"modified":"2026-05-31T14:45:03","modified_gmt":"2026-05-31T12:45:03","slug":"inverterdata-backups-and-a-minor-heart-attack","status":"publish","type":"post","link":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/","title":{"rendered":"Inverterdata, backups and a minor heart attack"},"content":{"rendered":"<p class=\"isSelectedEnd\">Today started as any other day. I started on YouTube and found a clip about a transformer going ballistic after short-circuiting itself.<\/p>\n<p class=\"isSelectedEnd\">Before long I was thinking about a huge power outage a few years ago, caused by a fault on a nearby 150kV substation.<\/p>\n<p class=\"isSelectedEnd\">I wanted to look up the effect it had on our local grid. One of my inverters keeps track of voltage and other parameters, and I got curious.<\/p>\n<p class=\"isSelectedEnd\">And then I fell into the proverbial rabbit hole.<\/p>\n<p class=\"isSelectedEnd\">First, I tried to locate my inverter data, but I could not find it in the usual spots.<\/p>\n<p class=\"isSelectedEnd\">During the investigation I found out that my do_backup.sh script wasn&#8217;t actually backing up my inverter data to my NAS.<\/p>\n<p class=\"isSelectedEnd\">So I started fixing that.<\/p>\n<p class=\"isSelectedEnd\">And during that process I made one booboo.<\/p>\n<p class=\"isSelectedEnd\">While testing the SMB share to my NAS I found out I had made a minor mistake. I wanted to remove the \/inverterdata directory, which was still linked to the SMB share.<\/p>\n<p class=\"isSelectedEnd\">And I typed:<\/p>\n<pre class=\"isSelectedEnd\">rm -rf \/inverterdata<\/pre>\n<p class=\"isSelectedEnd\">And pressed Enter.<\/p>\n<p class=\"isSelectedEnd\">After about two seconds I realized something was wrong. Deleting an empty directory should take about 0.0002 seconds.<\/p>\n<p class=\"isSelectedEnd\">CTRL-C it is.<\/p>\n<p class=\"isSelectedEnd\">And then I realized I had deleted my &#8220;backups&#8221; directory, the one where \/inverterdata was linked through SMB.<\/p>\n<p class=\"isSelectedEnd\">And yes, I wanted to save my inverter data backups to \/inverterdata\/backups\/<span class=\"text-token-text-primary cursor-text rounded-sm\" data-placeholder-token=\"true\">[a new directory]<\/span>.<\/p>\n<p class=\"isSelectedEnd\">I knew I had configured snapshots on my NAS, so no big deal.<\/p>\n<p class=\"isSelectedEnd\">After logging into DSM&#8230;<\/p>\n<p class=\"isSelectedEnd\">Yay. No snapshots on the Backups directory.<\/p>\n<p class=\"isSelectedEnd\">Shit.<\/p>\n<p class=\"isSelectedEnd\">Luckily the #recycle directory saved me.<\/p>\n<p class=\"isSelectedEnd\">After a few anxious moments I found my data back and restored it to the correct location.<\/p>\n<p class=\"isSelectedEnd\">Okay, dodged that bullet.<\/p>\n<p class=\"isSelectedEnd\">Back to fixing all of this.<\/p>\n<p class=\"isSelectedEnd\">Found the missing data and moved it to the correct location.<\/p>\n<p class=\"isSelectedEnd\">Fixed the SMB share.<\/p>\n<p class=\"isSelectedEnd\">Fixed the do_backup.sh script.<\/p>\n<p class=\"isSelectedEnd\">Tested the backup.<\/p>\n<p class=\"isSelectedEnd\">Enabled snapshots on all important shares.<\/p>\n<p class=\"isSelectedEnd\">And found the inverter logs from the moment the 150kV incident occurred, including the voltage drop to 180V.<\/p>\n<p class=\"isSelectedEnd\">Not bad for a day that started with a YouTube video about a transformer.<\/p>\n<p>Brain out!<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What started with a YouTube video about a transformer quickly turned into a backup audit, a near-disaster involving rm -rf, recovering missing inverter data, fixing a broken NAS backup, and unexpectedly finding voltage logs from the 2022 150kV grid incident.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[467,470,469,472,471,468],"class_list":["post-714","post","type-post","status-publish","format-standard","hentry","category-random","tag-backups","tag-script","tag-smb","tag-snapshot","tag-test","tag-transformer"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Inverterdata, backups and a minor heart attack - Brain&#039;s Ramblings<\/title>\n<meta name=\"description\" content=\"A simple attempt to investigate inverter logs from a 150kV grid incident turned into a backup rabbit hole involving missing data, a broken NAS backup script, an accidental rm -rf, Synology recovery, and snapshot configuration.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Inverterdata, backups and a minor heart attack - Brain&#039;s Ramblings\" \/>\n<meta property=\"og:description\" content=\"A simple attempt to investigate inverter logs from a 150kV grid incident turned into a backup rabbit hole involving missing data, a broken NAS backup script, an accidental rm -rf, Synology recovery, and snapshot configuration.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/\" \/>\n<meta property=\"og:site_name\" content=\"Brain&#039;s Ramblings\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-31T12:45:03+00:00\" \/>\n<meta name=\"author\" content=\"Brain\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Brain\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/\"},\"author\":{\"name\":\"Brain\",\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/#\\\/schema\\\/person\\\/24700e1628cfd605409636397a9bb6ab\"},\"headline\":\"Inverterdata, backups and a minor heart attack\",\"datePublished\":\"2026-05-31T12:45:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/\"},\"wordCount\":358,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/#\\\/schema\\\/person\\\/24700e1628cfd605409636397a9bb6ab\"},\"keywords\":[\"Backups\",\"script\",\"SMB\",\"snapshot\",\"test\",\"transformer\"],\"articleSection\":[\"Random\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/\",\"url\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/\",\"name\":\"Inverterdata, backups and a minor heart attack - Brain&#039;s Ramblings\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/#website\"},\"datePublished\":\"2026-05-31T12:45:03+00:00\",\"description\":\"A simple attempt to investigate inverter logs from a 150kV grid incident turned into a backup rabbit hole involving missing data, a broken NAS backup script, an accidental rm -rf, Synology recovery, and snapshot configuration.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/2026\\\/05\\\/31\\\/inverterdata-backups-and-a-minor-heart-attack\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Inverterdata, backups and a minor heart attack\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/#website\",\"url\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/\",\"name\":\"Brain's Ramblings\",\"description\":\"Code, commitment, caffeine, and the odd mindfart\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/#\\\/schema\\\/person\\\/24700e1628cfd605409636397a9bb6ab\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/#\\\/schema\\\/person\\\/24700e1628cfd605409636397a9bb6ab\",\"name\":\"Brain\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/brain_brain.png\",\"url\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/brain_brain.png\",\"contentUrl\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/brain_brain.png\",\"width\":1024,\"height\":1024,\"caption\":\"Brain\"},\"logo\":{\"@id\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/brain_brain.png\"},\"sameAs\":[\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\"],\"url\":\"https:\\\/\\\/www.familie-kleinman.nl\\\/brain\\\/index.php\\\/author\\\/brain\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Inverterdata, backups and a minor heart attack - Brain&#039;s Ramblings","description":"A simple attempt to investigate inverter logs from a 150kV grid incident turned into a backup rabbit hole involving missing data, a broken NAS backup script, an accidental rm -rf, Synology recovery, and snapshot configuration.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/","og_locale":"en_US","og_type":"article","og_title":"Inverterdata, backups and a minor heart attack - Brain&#039;s Ramblings","og_description":"A simple attempt to investigate inverter logs from a 150kV grid incident turned into a backup rabbit hole involving missing data, a broken NAS backup script, an accidental rm -rf, Synology recovery, and snapshot configuration.","og_url":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/","og_site_name":"Brain&#039;s Ramblings","article_published_time":"2026-05-31T12:45:03+00:00","author":"Brain","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Brain","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/#article","isPartOf":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/"},"author":{"name":"Brain","@id":"https:\/\/www.familie-kleinman.nl\/brain\/#\/schema\/person\/24700e1628cfd605409636397a9bb6ab"},"headline":"Inverterdata, backups and a minor heart attack","datePublished":"2026-05-31T12:45:03+00:00","mainEntityOfPage":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/"},"wordCount":358,"commentCount":0,"publisher":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/#\/schema\/person\/24700e1628cfd605409636397a9bb6ab"},"keywords":["Backups","script","SMB","snapshot","test","transformer"],"articleSection":["Random"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/","url":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/","name":"Inverterdata, backups and a minor heart attack - Brain&#039;s Ramblings","isPartOf":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/#website"},"datePublished":"2026-05-31T12:45:03+00:00","description":"A simple attempt to investigate inverter logs from a 150kV grid incident turned into a backup rabbit hole involving missing data, a broken NAS backup script, an accidental rm -rf, Synology recovery, and snapshot configuration.","breadcrumb":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/2026\/05\/31\/inverterdata-backups-and-a-minor-heart-attack\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.familie-kleinman.nl\/brain\/"},{"@type":"ListItem","position":2,"name":"Inverterdata, backups and a minor heart attack"}]},{"@type":"WebSite","@id":"https:\/\/www.familie-kleinman.nl\/brain\/#website","url":"https:\/\/www.familie-kleinman.nl\/brain\/","name":"Brain's Ramblings","description":"Code, commitment, caffeine, and the odd mindfart","publisher":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/#\/schema\/person\/24700e1628cfd605409636397a9bb6ab"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.familie-kleinman.nl\/brain\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/www.familie-kleinman.nl\/brain\/#\/schema\/person\/24700e1628cfd605409636397a9bb6ab","name":"Brain","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.familie-kleinman.nl\/brain\/wp-content\/uploads\/2025\/04\/brain_brain.png","url":"https:\/\/www.familie-kleinman.nl\/brain\/wp-content\/uploads\/2025\/04\/brain_brain.png","contentUrl":"https:\/\/www.familie-kleinman.nl\/brain\/wp-content\/uploads\/2025\/04\/brain_brain.png","width":1024,"height":1024,"caption":"Brain"},"logo":{"@id":"https:\/\/www.familie-kleinman.nl\/brain\/wp-content\/uploads\/2025\/04\/brain_brain.png"},"sameAs":["https:\/\/www.familie-kleinman.nl\/brain"],"url":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/author\/brain\/"}]}},"_links":{"self":[{"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/posts\/714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/comments?post=714"}],"version-history":[{"count":1,"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/posts\/714\/revisions"}],"predecessor-version":[{"id":715,"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/posts\/714\/revisions\/715"}],"wp:attachment":[{"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/media?parent=714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/categories?post=714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.familie-kleinman.nl\/brain\/index.php\/wp-json\/wp\/v2\/tags?post=714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}