Expanding GNS3VM Disk Space
So you’ve been labing things up like a mad man on your GNS3 server and you’ve finally ran out of room on your GNS3VM. Be not dismayed, follow the guidance below and you’ll be up and running in no time.
From within your hypervisor management interface, power off the GNS3VM and expand the disk as needed (I expanded mine from 100GB > 300GB). Save and power your GNS3VM back up. Now console or ssh into the GNS3VM and launch the ‘Shell’ from within the GNS3VM console menu. Once at the shell execute the following commands to get the underlying Ubuntu OS to recognize the newly added disk space:
# Switch to root sudo su # Run 'parted' on the appropriate disk (most likely sdb) parted /dev/sdb # Once inside the parted utility CLI expand the disk (parted) resizepart 1 Warning: Partition /dev/sdb1 is being used. Are you sure you want to continue? Yes/No? yes End? [322GB]? 100% (parted) quit # Run the resize2fs utility to expand the filesystem to consume the newly added disk space resize2fs /dev/sdb1 # Reboot reboot # Verify the new disk space has been added df -h Filesystem Size Used Avail Use% Mounted on udev 32G 0 32G 0% /dev tmpfs 6.3G 8.9M 6.3G 1% /run /dev/sda1 20G 5.3G 13G 29% / tmpfs 32G 0 32G 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 32G 0 32G 0% /sys/fs/cgroup >>/dev/sdb1 295G 93G 190G 33% /opt tmpfs 6.3G 0 6.3G 0% /run/user/1000