Guest OS does not use entire disk space

[kangjh0101]

Hi, everyone.

I am kind of new to the ESXi.

While using ESXi5, I have face a problem with the disk space.

As  you can see in the picture below, I have assigned 600Gigs for my guest OS (CentOS).

But I have found that the OS actually is using only 90Gigs as seen in the picture below.

Do you have any suggestion for this? Or any idea why this is in this way?

Thank you guys very much for you help.

[rcporto]

Can you provide the output of fdisk -l of your CentOS guest ?

[kangjh0101]

Hello, Richardson.

Here is the output of fdisk -l.

Thank you very much for your help!!!!

[Rubeck]

I see your 600GB disk is thin provisioned, so what you see is expected.

This means that blocks are not allocated until needed.... See more here: VMware KB: Using thin provisioned disks with virtual machines    

/Rubeck

[kangjh0101]

Hi, Rubeck.

But according to the article that you linked, the unused space must be used when needed. Am I right?

If so, what is weird is that I get "no space left" error when the disk usage hits 90gigs.

What am I supposed to do for this? Do I have change some config? Or do I need to reinstall the whole OS with thick provisioning?

Thank you very much for your help!!!

[rcporto]

kangjh0101, seems like your LVM is not using all the disk space, cause according with your print, the / logical volume have 53,7GB and /home 44,8GB... what you need to do is extend the logical volume inside your CentOS.

[kangjh0101]

Richardson

Can you give me a brief idea how to extend the logical volume?

It might be a stupid question, but I am new to the linux environment.

Thank you very much for your help!!

[rcporto]

Check this KB article: VMware KB: Extending a logical volume in a virtual machine running Red Hat or Cent OS

Or for some more specific CentOS help, go to this link: TipsAndTricks/ExpandLV - CentOS Wiki

[kangjh0101]

Thank you very much Richardson