Resizing an Azure disk on an Ubuntu VM

Question

Good morning,

I have an Ubuntu VM on Azure with a disk attached.

It was 128 GB, I mounted a /datadrive partition and added to the fstab following this procedure:

Everything is OK. This is the point /dev/sdc1
I wanted to increase the size of this disk to 256GB

1. I did this in Azure: Ok
   1. In SSH, I used several tools to resize and check:
   2. sudo gdisk /dev/sdc
   3. parted
   4. sudo cfdisk /dev/sdc
   5. resize2fs /dev/sdc1
2. Each of them tells me that it is good and the “lsblk” tells me that my disk is 256 GB But the “df -h” tells me that my /datadrive directory is still 100% full and that it is only 128 GB Everything seems correct to me in “sudo cat /etc/fstab“ and other “sudo blkid“, I don’t

How do I adapt the size of my directory mounted to 100% of the disk?

df -h

• Filesystem Size Used Avail Use% Mounted on
• /dev/root 62G 15G 48G 23% /
• tmpfs 7.9G 0 7.9G 0% /dev/shm
• tmpfs 3.2G 1.2M 3.2G 1% /run
• tmpfs 5.0M 0 5.0M 0% /run/lock
• /dev/sda15 105M 6.1M 99M 6% /boot/efi
• /dev/sdc1 128G 128G 184K 100% /datadrive
• /dev/sdb1 32G 28K 30G 1% /mnt
• tmpfs 1.6G 4.0K 1.6G 1% /run/user/1000

lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS

loop0 7:0 0 138.9M 1 loop /snap/azcli/8

...

loop9 7:9 0 44.3M 1 loop /snap/snapd/23258

sda 8:0 0 64G 0 disk

├─sda1 8:1 0 63.9G 0 part /

├─sda14 8:14 0 4M 0 part

└─sda15 8:15 0 106M 0 part /boot/efi

sdb 8:16 0 32G 0 disk

└─sdb1 8:17 0 32G 0 part /mnt

sdc 8:32 0 256G 0 disk

└─sdc1 8:33 0 256G 0 part /datadrive

Answer 1

Hi David M ,

We have noticed that you rated an answer as not helpful. We appreciate your feedback and are committed to improving your experience with the Q&A. I have worked on finding an alternative solution to address your issue.

• First verify by executing these commands; df -h and lsblk
• Afterwards execute below command to manage partition sudo fdisk /dev/sdc and after this you will get a pop up then enter "p" , afterwards enter "d" , then later enter "n" and default partition(1) and press "enter" two times and finally enter "w". Now the partitions has been altered.
• Now verify using "lsblk" command.
• Now, execute df -h , it still shows /dev/sdc1 as 128G. So, first we need to check the file system of /dev/sdc1 by using a command "df -hT" as a result it shows as xfs file system.
• Now, to resize the xfs file system, you need to execute below command sudo xfs_growfs /dev/sdc1
• Finally, the /dev/sdc1 is resized to 256G. You can verify by executing "df -h" and "lsblk" commands.

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Answer 2

I found

sudo xfs_growfs /dev/sdc1

work for me.

Thanks