Attach Disk To Azure VM

This article shows you how to attach both new and existing disks to a Linux virtual machine through the Azure portal.

Add a data disk

1.     Sign in to the Azure portal.

2.     Search for and select Virtual machines.

3.     Select a virtual machine from the list.

4.     On the Virtual machine pane, select Disks.

5.     On the Disks pane, select Create and attach a new disk.

6.     In the drop-downs for the new disk, make the selections you want, and name the disk.

7.     Select Save to create and attach the new data disk to the VM.

Attach an existing disk

1. 1. On the Disks pane, under Data disks, select Attach existing disks.

   2.       Click the drop-down menu for Disk name and select a disk from the list of available managed disks.

   3.       Click Save to attach the existing managed disk and update the VM configuration:

Connect to the Linux VM to mount the new disk

# df -h

# grep SCSI /var/log/messages

# lsblk -o NAME,HCTL,SIZE,MOUNTPOINT | grep -i "sd"

# lsblk

# parted /dev/sdc --script mklabel gpt mkpart xfspart xfs 0% 100%

# mkfs.xfs /dev/sdc1

# partprobe /dev/sdc1

# mkdir /datadrive

# mount /dev/sdc1 /datadrive

# blkid

# vi /etc/fstab

UUID=afd7eaf0-5e3f-40a1-93bd-31331a4a1720 /datadrive xfs defaults,nofail   1   2

wq!

# lsblk -o NAME,HCTL,SIZE,MOUNTPOINT | grep -i "sd"

now you can use this disk as storage.

Note:

Improperly editing the /etc/fstab file could result in an unbootable system. If unsure, refer to the distribution's documentation for information on how to properly edit this file. It is also recommended that a backup of the /etc/fstab file is created before editing.

Later removing a data disk without editing fstab could cause the VM to fail to boot. Most distributions provide either the nofail and/or nobootwait fstab options. These options allow a system to boot even if the disk fails to mount at boot time. Consult your distribution's documentation for more information on these parameters.

The nofail option ensures that the VM starts even if the filesystem is corrupt or the disk does not exist at boot time. Without this option, you may encounter behavior as described in Cannot SSH to Linux VM due to FSTAB errors

Initialize a new data disk

1.       Connect to the VM.

2.       Select the Windows Start menu inside the running VM and enter diskmgmt.msc in the search box. The Disk Management console opens.

3.       Disk Management recognizes that you have a new, uninitialized disk and the Initialize Disk window appears.

4.       Verify the new disk is selected and then select OK to initialize it.

5.       The new disk appears as unallocated. Right-click anywhere on the disk and select New simple volume. The New Simple Volume Wizard window opens.

6.       Proceed through the wizard, keeping all of the defaults, and when you're done select Finish.

7.       Close Disk Management.

8.       A pop-up window appears notifying you that you need to format the new disk before you can use it. Select Format disk.

9.       In the Format new disk window, check the settings, and then select Start.

10.   A warning appears notifying you that formatting the disks erases all of the data. Select OK.

11.   When the formatting is complete, select OK.