Azure Disks

Persisting Mounts in Azure Linux VM

• Azure is responsible for providing disks to OS, formatting and extending the disk spaces is the responsibility of OS
• In Linux mounts are not persisted across restarts, for that we need to add entry to fstab
• In the same way, partitions are created by OS not Azure Managed disk
• Create a ubuntu vm with size standard_b1s
• Login into the vm and execute the following commands

sudo lsblk

* Purpose of fstab Refer Here
* Add a data disk to the vm

* execute lsblk

* Create a filesystem

* Create a directory and mount the device on to this folder

* Now execute df -h


* Add the line UUID=<uuid of disk> /projects xfs defaults,nofail 0 1 to the /etc/fstab
* Now restart the vm and ensure the mount is persisted

• Refer Here for microsoft azure article

Resizing the Disk

• Now lets resize the disk attached to projects from 4 GB to 8 GB
• Azure allows to change disk sizes only when vm is dealloacted(stopped)
• Stop the vm and change the disk size
• Now start the vm
• Try detecting the changes Refer Here
• Refer Here for microsoft official docs on expanding disks
• Or try resize xfs filesystem ubuntu