SOLVED cPanel on Google Cloud VM - Resize Disk Not working

[supportmwm]

Hi

Google Cloud has just announced their availability of AU region and the first thing I tried to do is try a quick installation of cPanel and other normal operations on their official CentOS 7 image.

Other things worked fine however I noticed that Disk resize is not working properly specifically after cPanel installation.

When I tried disk resize without installing cPanel on centos7 server, all I have to do is stop/start the server and the server immediately recognized resized disk.

However after cPanel installation, server is not able to recognize resized disk even after reboot. According to Google, the OS should recognize it automatically (which it does in previous test) so I believe it's something cPanel doing. Can someone provide help here?

Google Cloud link for auto resize - Creating Customized Root Disks  |  Compute Engine Documentation  |  Google Cloud Platform

 

[cPanelKenneth]

Hi,

First, I'd like to note that we haven't tested cPanel & WHM in the environment or situation you are describing. Could you answer the following questions, please? That will guide us along the proper path.

1. Did you grow or shrink the disk?
2. Is everything in a single partition?
3. What is your file system?
4. What was the size of the partition before, and after the resize attempt?

Thank you!

 

[supportmwm]

Hi Kenneth

1. I grew the disk - from 20GB to 30GB.
2. Yes
3. df -Th shows below output so I believe it is "xfs" file system -

Filesystem Type Size Used Avail Use% Mounted on/
dev/sda1 xfs 20G 7.3G 13G 37% /

4. The partition size on the instance hasn't changed - it has remained at 20GB and server is accessible. However I have upgraded the disk size to 30GB which it doesn't show.

One additional information. Command "sudo lsblk" shows below output which suggests it has recognized 30GB on disk but not on partition -
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 30G 0 disk
└─sda1 8:1 0 20G 0 part /
loop0 7:0 0 651M 0 loop /var/tmp

 

[cPanelMichael]

According to Google, the OS should recognize it automatically (which it does in previous test) so I believe it's something cPanel doing.

Hello,

The following document suggests automatic resizing is supported with CentOS 6 and CentOS 7:

Creating Customized Root Disks | Compute Engine Documentation | Google Cloud Platform

However, it does show "v20160418 or newer". Did you setup this server using v20160418 or newer of the CentOS image offered by Google? If not, you can find discussion of resizing the partition on the following URLs:

df -h only shows 10GB, but I've assigned a 500GB disk to the GCE instance
How can size of the root disk in Google Compute Engine be increased?

Keep in mind this is unsupported, so you should definitely make a backup of the server (or take a snapshot) before attempting any of the instructions referenced in those posts.

Thank you.

 

[supportmwm]

The last comment in above 1st link worked for me -

First re-create your root partition, type this command:
(echo d; echo n; echo p; echo 1; echo ; echo; echo w) | sudo fdisk /dev/sda

Then restart your server. Once restarted, grow your partition
xfs_growfs /dev/sda1

Verify with:
df -h

Keep in mind this is unsupported, so you should definitely make a backup of the server (or take a snapchat) before attempting any of the instructions referenced in those posts.

snapchat??

 

[cPanelMichael]

Hello,

I'm happy to see those instructions helped. I've modified that post to reflect "snapshot"

Thanks!