update and publish old post about increasing a VMs disk size

content/posts/2024/72-increase-disksize-of-a-vm/index.md

@@ -1,42 +1,63 @@
 ---
-title: 72 increase disksize of a vm
+title: Increase the disksize of a VM (on Unraid)
 summary: >
-  Howdy.
+  Another quick'n'dirty note on how I finally enhanced the diskspace of
+  my local mastodon test-instance placed as a virtual machine on my Unraid
+  server.
   <small>The thumbnail was created with Google AI (Imagen 3).</small>
 date: 2024-12-05T22:11:24+01:00
-lastmod: 2024-12-08T11:14:36+0000
+lastmod: 2024-12-08T12:05:22+0000
 categories:
-  - amateur-radio
   - computerstuff
 tags:
-  - draft_post
+  - command-line
-
+  - linux
-# showBreadcrumbs: true
+  - server
-# showDate: false
+  - unraid
-# showReadingTime: false
-# showWordCount: false
-# showPagination: false
-
-# feed_exclude: true
-# site_exclude: true
-
-# some help
-#
-# highlighting with highlights
-#
-# use table, as inline creates a padding around
-# and it pushes the text more to the right side (end of screen)
-#
-# ~~~html {linenos=table,hl_lines="3-6"}
-# ~~~html {linenos=inline,hl_lines="1,3-6"}
-
-draft: true
 ---
 
-- shutdown VM
+Following these steps should suffice.
-- `qemu-img info -f raw vdisk1.img`
+
-- `qemu-img resize -f raw vdisk1.img +40G`
+- First of all, shutdown the <abbr title="virtual machine">VM</abbr>
-- start Vm and login in terminal
+- Get some info about the image (I use a raw disk usually)
-- `sudo parted /dev/vda resizepart 2 100%`
+
-- `sudo btrfs filesystem resize max /`
+  ```console
-- reboot
+  $ qemu-img info -f raw vdisk1.img
+  ```
+
+- Resize the image (add 40 gigabytes)
+
+  ```console
+  $ qemu-img resize -f raw vdisk1.img +40G
+  ```
+
+- Start the VM and log into a terminal on the VM
+- Resize the filesystems partition up to 100%
+
+  ```console
+  $ sudo parted /dev/vda resizepart 2 100%
+  ```
+
+- Extend the filesystem on the resized partition (I use btrfs here)
+
+  ```console
+  $ sudo btrfs filesystem resize max /
+  ```
+
+  {{< alert "circle-info" >}}
+  **Additional information for other filesystems**  
+  For the classic ext4 filesystem it should be (not tested yet):
+
+  ```console
+  $ sudo resize2fs /dev/vda2
+  ```
+
+  {{< /alert >}}
+
+- Reboot the VM
+
+That's it. Following a few sources:
+
+- https://gist.github.com/zakkak/ab08672ff9d137bbc0b2d0792a73b7d2
+- https://linuxiac.com/how-to-resize-extend-kvm-virtual-disk-size/
+- https://unix.stackexchange.com/questions/373063/auto-expand-last-partition-to-use-all-unallocated-space-using-parted-in-batch-m