topic Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm . in Simulator Discussions

DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

SAli — Thu, 05 Jun 2025 05:12:56 GMT

DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

Error :

[ Failed to start the virtual machine.
Module DiskEarly power on failed.
Cannot open the disk '/vmfs/volumes/d1c0391d-a50882a4/RHEL_Test/vsim_esx-cm/DataONTAP-sim.vmdk' or one of the snapshot disks it depends on.
The system cannot find the file specified
VMware ESX cannot find the virtual disk "/vmfs/volumes/d1c0391d-a50882a4/RHEL_Test/vsim_esx-cm/DataONTAP-sim.vmdk". Verify the path is valid and try again. ]

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

Gerg — Thu, 29 Jan 2015 21:35:41 GMT

I had the same problem today and eventually resolved it by following the recommended solution in this thread.

To quote CCIE17603....

~#~

The Fix: all you have to do is ssh into your host and run this command from the cli:

# vmkload_mod multiextent

Unfortunately after a ESXi host reboot the multiextent module unloads and you have to perform this again to get your Sims to boot. If anyone can find a way to make this persistent with a switch or write a script that makes it load upon host reboot. I'm sure everyone would be very thankful.

~#~

I'm running 8.3 RC1 on ESXi 5.5 U2. As soon as I'd done the vmkload_mod multiextent I was back in business.

Cheers,

Gerg

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

Brantley_R — Sat, 31 Jan 2015 18:41:46 GMT

To fix the problem permanantely, do this. Use vmkfstools to basically clone off the VDMK into a format that doesn't require the multiextent module loaded.

(http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2036572)

To load the vmkernel multiextent module:

Open a console to the ESXi host. For more information, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.x (1017910).
Run this command to load the multiextent module:

# vmkload_mod multiextent
Check if any of your virtual machine disks are of a hosted type. Hosted disks end with the -s00x.vmdk extension.
Convert virtual disks in hosted format to one of the VMFS formats.

To convert virtual disks in hosted format to one of the VMFS formats:
1. Clone source hosted disk to a new disk using one of these commands:
  
  For a thick vmdk disk:
  - # vmkfstools -i VM-name.vmdk <VM-name-new-disk>.vmdk -d zeroedthick
  - # vmkfstools -i VM-name.vmdk /vmfs/volumes/destination_datastore/vmfolder/<VM-name-new-disk>.vmdk -d zeroedthick
  For a thin vmdkdisk:
  - # vmkfstools -i VM-name.vmdk <VM-name-new-disk>.vmdk -d thin
  - # vmkfstools -i VM-name.vmdk /vmfs/volumes/destination_datastore/vmfolder/<VM-name-new-disk>.vmdk -d thin
2. Delete the hosted disk after successful cloning using the command:
  
  # vmkfstools -U VM-name.vmdk
3. Rename the cloned VMFS type new disk to the original disk name using the command:
  
  vmkfstools -E VM-name-new-disk.vmdk VM-name.vmdk
Run this command to unload the multiextent module:

# vmkload_mod -u multiextent

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

Brantley_R — Sat, 31 Jan 2015 18:42:42 GMT

To be specfic, use vmkfstools to clone DataONTAP-sim.vmdk

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

shatfield — Sun, 01 Feb 2015 08:22:48 GMT

If you do a lot of work with simulators, its easier to just persistently enable multiextent:

add the following:

localcli system module load -m multiextent

to this file:

/etc/rc.local.d/local.sh

right before this line:

exit 0

Credit to William Lam:

http://www.virtuallyghetto.com/2013/05/executing-commands-during-boot-up-in.html

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

SAli — Mon, 02 Mar 2015 18:59:26 GMT

Yup Excellent i was able to resolve it . thanks . I didnot try permanent solution but its non prod dev esxi and no plan for reboot now but will try the perm solution later some time.

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

cedric_renauld — Wed, 25 Mar 2015 21:12:54 GMT

Hi, Guys

Another Way to have some Sim running with ESX 5,5 ....

Put the sim files on a disk accesible by the vcenter, and with the Vmware Converter do a convertion to the vSphere cluster with the files in sources ...

And dollow the documentations of SIM installation

Enjoy

Re: DATA ONTAP 8.3 Cluster on Esx Getting Error Disk not found after power on the vm .

shatfield — Thu, 26 Mar 2015 05:42:49 GMT

And another way:

Delete the 250gb disk on IDE1:1, and replace it with a new one. Thin provisioned is ok.

As long as its done before the first boot, the sim will partition it during init and mount it on /sim