Hello, Jakub,
Thanks for contacting us.
Regarding the issue that you are facing about resizing the storage of one of your VMs, I would like to mention that this probably happened because it’s necessary to resize the OS capacity. There are multiple options, and some of them are:
- You could include commands at the startup script, but that would depend on your configuration.
- You can check the link to directly resize the OS VM.
- If the previous option does not work, you could detach the disk from the instance, then attach it to an instance that is working properly, resize the partition and/or check any possible conflict in the tmp folders and reattach the disk to the instance (this option should be considered a last resort, I strongly recommend following the 2nd one).
By the way, I recommend performing a snapshot before proceeding. After the snapshot, please reboot the instance, and the disk should be expanded automatically. Let me know your results.
Best regards,
Erick