Expand Clustered VMDK

[Eric3939]

I have 6.5 vcenter with 6.5 ESXi hosts. I have two windows 2012 SQL cluster . The VMs each have a SCSI controller set in "virtual" I am not using an RDM, I'm using a VMDK file with a shared disk. I am using EagerZeroed vmdks on ms cluster. I want to extend the disk to 250 GB. which command should I use. I've seen too many different commands on the internet

vmkfstools -X 250g  /vmfs/volumes/cs-ee-symmlun-001A/cormac.vmdk  or vmkfstools -X 250G -d eagerzeroedthick  /vmfs/volumes/cs-ee-symmlun-001A/cormac.vmdk               

which one should i use? I need to install any tool for vmkfstools ?                

[diegodco31]

Hi

Check if the following VMware KB article helps:

VMware Knowledge Base

Extending an EagerZeroedThick Disk - VMware vSphere Blog

[a_p_]

It's the vmkfstools command with the -eagerzeroed option that you need to use.

As shown in Extending an EagerZeroedThick Disk - VMware vSphere Blog (from which I assume you copied the example) describes this in detail, so go with step 5.

The vmkfstools command line utility is available by default on any ESXi host.

André

[Eric3939]

the disk path is below. How should I run the command .can you write the correct command

I found the location of the disk with rvtools :

[LUN001] MsSQLClusterDB1/MsSQLClusterDB1_1.vmdk.

~ # vmkfstools -X 100G -d eagerzeroedthick /vmfs/volumes/cs-ee-symmlun-001A/cormac.vmdk

Thanks ?

[continuum]

# vmkfstools -X 250G -d eagerzeroedthick /vmfs/volumes/LUN001/MsSQLClusterDB1/MsSQLClusterDB1_1.vmdk

[Eric3939]

What can be the problem ? I want to add 10 gb of disk to 500gb. I will add 200 gb disk if the test is success

it works on sql . any data is not deleted right ? after processing?

One of the parameters supplied is invalid (1) ?

[diegodco31]

The -X paramater actually expects the final size of the VMDK.

So if you have a 500 GB VMDK and you want to make it 10 GB,  then you would use -X 510G.

[Eric3939]

on both esxi, I just got an error on an esxi. disk size has also not changed in virtual machine properties. also I got an error when power machine on virtual machine

I have two ms sql cluster with shared disk. both virtual servers are working on different esxi host

[cjscol]

If the virtual machines are on different physical ESXi hosts then you need to use RDM. With a shared VMDK the virtual machines MUST be on the same host.

[Eric3939]

so I get this error. I do not understand. what should I do? ?  Can I add a disk if I move virtual servers to the same host ? Why is this problem?

[a_p_ · Accepted solution]

A few things:

• Resizing a virtual disk must be done only once, i.e. not from both ESXi hosts, since it's the same virtual disk file.
• The command you ran on ESX02 is incorrect anyway. It's missing "/volume/" in the path.
• In order for the new sizes to show up in the GUI, the modified .vmdk files need to be re-read. It should be sufficient to open the VM's settings, and click the Save button.

Regarding the error message when you start the VM. What's the output of:

vmkfstools -t0 /vmfs/volumes/Admin-vPlex-Production01_DS/MsSQLClusterDB3/MsSQLClusterDB3_3.vmdk

André