{"id":4268,"date":"2025-08-12T20:03:53","date_gmt":"2025-08-12T20:03:53","guid":{"rendered":"https:\/\/www.it-react.com\/?p=4268"},"modified":"2025-09-19T15:26:48","modified_gmt":"2025-09-19T15:26:48","slug":"how-to-increase-disk-size-of-an-ubuntu-linux-vm-in-vsphere","status":"publish","type":"post","link":"https:\/\/www.it-react.com\/index.php\/2025\/08\/12\/how-to-increase-disk-size-of-an-ubuntu-linux-vm-in-vsphere\/","title":{"rendered":"How to Increase Disk Size of an Ubuntu Linux VM in vSphere"},"content":{"rendered":"\n<p>When managing virtual machines in VMware vSphere, it\u2019s common to run out of disk space over time. Fortunately, expanding a virtual disk is straightforward, but it involves both changes in vSphere and inside the guest operating system. In this guide, I\u2019ll walk you through the steps to increase the disk size of an Ubuntu Linux virtual machine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 1: Shut Down or Keep the VM Running?<\/strong><\/h2>\n\n\n\n<p>vSphere allows you to increase the size of a virtual disk while the VM is powered on (if VMware Tools is installed). However, for critical systems, it\u2019s often safer to perform this change during a maintenance window.<\/p>\n\n\n\n<p>\u26a0\ufe0f <strong>Warning:<\/strong> Make sure the VM does not have any active snapshots. Expanding a disk with snapshots is not allowed in vSphere and will result in an error. If snapshots exist, consolidate or delete them before proceeding.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 2: Expand the Virtual Disk in vSphere<\/strong><\/h2>\n\n\n\n<p>Log in to the vSphere Client.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Right-click on the VM and select <strong>Edit Settings<\/strong>.<\/li>\n\n\n\n<li>Locate the hard disk you want to expand.<\/li>\n\n\n\n<li>Increase the disk size to the desired capacity (for example, from 15 GB to 30 GB).<\/li>\n\n\n\n<li>Click <strong>OK<\/strong> to apply the change.<\/li>\n<\/ol>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69fa7a5e5d40f&quot;}\" data-wp-interactive=\"core\/image\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"795\" height=\"607\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-3.png\" alt=\"\" class=\"wp-image-4274\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-3.png 795w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-3-300x229.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-3-768x586.png 768w\" sizes=\"auto, (max-width: 795px) 100vw, 795px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on-async--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 3: Verify the New Disk Size<\/strong><\/h2>\n\n\n\n<p>After resizing the virtual disk in vSphere, check that the system sees the new capacity:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo fdisk -l<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"923\" height=\"360\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-4.png\" alt=\"\" class=\"wp-image-4277\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-4.png 923w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-4-300x117.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-4-768x300.png 768w\" sizes=\"auto, (max-width: 923px) 100vw, 923px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 4: Extend partition<\/strong><\/h2>\n\n\n\n<p>Launch the partitioning tool <em>cfdisk<\/em> on your disk, select \/dev\/sda3 and then Resize:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo cfdisk<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"921\" height=\"366\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-5.png\" alt=\"\" class=\"wp-image-4278\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-5.png 921w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-5-300x119.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-5-768x305.png 768w\" sizes=\"auto, (max-width: 921px) 100vw, 921px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Press Enter and the <em>New size<\/em> will be displayed<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"920\" height=\"366\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-6.png\" alt=\"\" class=\"wp-image-4279\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-6.png 920w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-6-300x119.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-6-768x306.png 768w\" sizes=\"auto, (max-width: 920px) 100vw, 920px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Press Enter again, then select Write, type yes for confirmation and then Quit from the program.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"370\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-7.png\" alt=\"\" class=\"wp-image-4280\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-7.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-7-300x120.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-7-768x307.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. Re-read the Partition Table<\/strong><\/h2>\n\n\n\n<p>Run fdisk -l \/dev\/sda to check whether the partition was extended:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"274\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-8.png\" alt=\"\" class=\"wp-image-4283\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-8.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-8-300x89.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-8-768x227.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 6: Resize the Physical Volume<\/strong><\/h2>\n\n\n\n<p>Tell LVM to use the extra space:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo pvresize \/dev\/sda3<\/code><\/pre>\n\n\n\n<p>Check with:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo pvs<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"146\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-10.png\" alt=\"\" class=\"wp-image-4285\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-10.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-10-300x47.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-10-768x121.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 7.1: Extend the Logical Volume and Filesystem<\/strong><\/h2>\n\n\n\n<p>Get root logical volume name:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df -h<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"194\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-11.png\" alt=\"\" class=\"wp-image-4286\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-11.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-11-300x63.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-11-768x161.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Expand the logical volume to use all available free space:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo lvextend -r -l +100%FREE \/dev\/mapper\/ubuntu--vg-ubuntu--lv<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li>-l +100%FREE tells LVM to allocate all remaining free space from the volume group.<\/li>\n\n\n\n<li>-r (or &#8211;resizefs) resizes the filesystem automatically, so you don\u2019t need to run resize2fs or xfs_growfs separately.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"194\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-12.png\" alt=\"\" class=\"wp-image-4287\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-12.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-12-300x63.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-12-768x161.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check with: <\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code><code>sudo lvs<\/code><\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"114\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-13.png\" alt=\"\" class=\"wp-image-4289\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-13.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-13-300x37.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-13-768x95.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 7.2: Alternative &#8211; Manual Resize<\/strong><\/h2>\n\n\n\n<p>If you prefer more control, you can run the steps separately:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo lvextend -l +100%FREE \/dev\/mapper\/ubuntu--vg-ubuntu--lv\nsudo resize2fs \/dev\/mapper\/ubuntu--vg-ubuntu--lv   # for ext4\n# or\nsudo xfs_growfs \/   # for XFS<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"114\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-14.png\" alt=\"\" class=\"wp-image-4290\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-14.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-14-300x37.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-14-768x95.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Step 8. Verify the Result<\/strong><\/h2>\n\n\n\n<p>Check available space:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df -h<\/code><\/pre>\n\n\n\n<p>You should now see <code>\/<\/code> using ~30G.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"194\" src=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-15.png\" alt=\"\" class=\"wp-image-4294\" srcset=\"https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-15.png 925w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-15-300x63.png 300w, https:\/\/www.it-react.com\/wp-content\/uploads\/2025\/09\/image-15-768x161.png 768w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>The real expansion happens after the disk size is increased in vSphere. By resizing the partition, extending the physical volume, and then expanding the logical volume and filesystem, you unlock the additional space for the operating system. LVM makes this process flexible, allowing you to adjust storage without reinstalling or migrating data, while the filesystem resize step ensures that the new capacity is ready to be used immediately.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When managing virtual machines in VMware vSphere, it\u2019s common to run out of disk space over time. Fortunately, expanding a virtual disk is straightforward, but it involves both changes in vSphere and inside the guest operating system. In this guide, I\u2019ll walk you through the steps to increase the disk size of an Ubuntu Linux [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4331,"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,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_FSMCFIC_featured_image_caption":"","_FSMCFIC_featured_image_nocaption":"","_FSMCFIC_featured_image_hide":"","footnotes":""},"categories":[7,15],"tags":[25,31,26,36],"class_list":["post-4268","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-vmware","tag-vcenter","tag-vm","tag-vmware","tag-vsphere"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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