Resize VM Image

[rajsri]

Hello,

I have a Windows 8.1 VM created in unRaid 6.1.3 with 200GB of disk size for the VM disk itself.

I ended up replacing my HDD cache pool with single SSD cache disk (I backed up the VM disk image and the XML before the replacement).

Now, how I can resize the disk size and re-import?

I created a new VM and then I used the following command to resize the old VM image:

sudo qemu-img resize vmdisk1.img 50G

and replaced the new VM image with the resized image (and the XML as well). The VM does not start.

 

Any documented method to resize/compact existing VM image file? Thanks!

 

[jonp]

Reducing a virtual disk image in size is tougher than increasing, but I believe it's possible.  Have you tried this guide:

 

http://nairobi-embedded.org/manipulating_disk_images_with_qemu-img.html#resizing-an-existing-disk-image-file

[rajsri]

Reducing a virtual disk image in size is tougher than increasing, but I believe it's possible.  Have you tried this guide:

 

http://nairobi-embedded.org/manipulating_disk_images_with_qemu-img.html#resizing-an-existing-disk-image-file

 

I believe I need to boot into the VM to run some of the commands, if so I cannot try this as my SSD is smaller than the VM image (I am not a Linux expert, sorry if my understanding is incorrect)

[JonathanM]

I believe I need to boot into the VM to run some of the commands, if so I cannot try this as my SSD is smaller than the VM image (I am not a Linux expert, sorry if my understanding is incorrect)

Temporarily copy the backed up full size image to an array drive and run the VM from there until you get it shrunk down to size.

[rajsri]

I am no Linux expert, no idea what commands to run  . I think I need to bite the bullet and make a new VM. Need to see if I can activate another copy of Windows on same key I have!! Thanks for trying to help me out.