Feat: adds the command

1 files changed, 37 insertions, 0 deletions

diff --git a/DOCS.md b/DOCS.md
index e837f6b..0ca4c6a 100644
--- a/DOCS.md
+++ b/DOCS.md
@@ -40,3 +40,40 @@ Misc documentation on kvmx and qemu.
 
   * https://bugs.launchpad.net/qemu/+bug/1810000
     qemu system emulator crashed when using xhci usb controller
+
+## Manually resizing an image
+
+Nowadays this can be done with `kvmx growpart <device> <partition> <additional_size>`, but
+here goes some manual procedures if needed.
+
+* Image resize action, doing something like this, thanks to
+  https://ahelpme.com/linux/online-resize-of-a-root-ext4-file-system-increase-the-space/
+
+    # poweroff
+    kvmx poweroff $guest
+
+    # resize image
+    qemu-img resize `kvmx list_image $guest` +5G
+
+    # power up
+    kvmx up $guest
+
+    # ensure parted is installed
+    #sudo apt-get install -y parted
+    kvmx ssh $guest sudo apt-get install -y cloud-guest-utils
+
+    # resize virtual machine root fs - while the partition is mounted!
+    # this parted command currently need to be done manually
+    #echo resizepart 2 -1 | kvmx ssh $guest sudo parted /dev/vda
+
+    # See https://unix.stackexchange.com/questions/373063/auto-expand-last-partition-to-use-all-unallocated-space-using-parted-in-batch-m
+    #     https://unix.stackexchange.com/questions/190317/gnu-parted-resizepart-in-script#202872
+    #     https://bugs.launchpad.net/ubuntu/+source/parted/+bug/1270203
+    #     https://techtitbits.com/2018/12/using-parteds-resizepart-non-interactively-on-a-busy-partition/
+    #     https://serverfault.com/questions/870594/resize-partition-to-maximum-using-parted-in-non-interactive-mode
+    #kvmx ssh $guest sudo parted /dev/vda resizepart 2 -1 Yes
+    kvmx ssh $guest sudo growpart /dev/vda 2
+
+    kvmx ssh $guest sudo resize2fs /dev/vda2
+    kvmx ssh $guest sudo touch /forcefsck
+    kvmx restart $guest