diskaddexisting command fails on ESXi 6.5

[kbhasin]

Command : vim-cmd  vmsvc/device.diskaddexisting 22 MY_VM /vmfs/volumes/datastore1/DISK1_PATH/MY_VM_Data_Disk_0001.vmdk 0 2

Output : Failed to find a 3 controller with bus number 0.

Return Code : 0 ( WHY ????, it should be non-zero)

Note :

1> Disk(MY_VM /vmfs/volumes/datastore1/DISK1_PATH/MY_VM_Data_Disk_0001.vmdk) is successfully created before executing this command.

2> SCSI position "0:2" is available (is not occupied) [ I checked by adding from VMware HTML Client, it was adding successfully in 0:2, after command failed)

Similar Question in forum (with no progress)

https://communities.vmware.com/thread/552802

Documentation says that this command can be run on ESXi 5.5, 6.0 but i need to run on ESXi 6.5 , is there any alternate command ?

[daphnissov · Accepted solution]

vim-cmd  vmsvc/device.diskaddexisting 22 MY_VM /vmfs/volumes/datastore1/DISK1_PATH/MY_VM_Data_Disk_0001.vmdk 0 2

The "22" portion of your command should be the vmid (verify with vim-cmd vmsvc/getallvms), but you put "MY_VM" afterwards which is not valid. Try it with just the ID, and in the fully-qualified path to the VMDK descriptor, use the non-linked format (GUID instead of canonical name). I just verified this on an ESXi 6.5 host and the command completes successfully for me.

[kbhasin]

Thanks !!

It got working , actually it was a degrade in my script, (I changed some code) and failed to notice the command string also changed