suryag1201 opened a new issue, #14103:
URL: https://github.com/apache/cloudstack/issues/14103

   ### problem
   
   ### Issue Description
   
   When a user deploys a VM from a template with a Custom IOPS offering for the 
ROOT disk, the min IOPS and max IOPS entered in Deploy Instance are stored in 
VM details but not copied to the ROOT volume.
   volumes.min_iops and volumes.max_iops stay empty. Vendor storage that reads 
IOPS from the volumes gets null for min IOPS and max IOPS instead of the values 
entered at deploy.
   
   ### Root Cause
   The UI sends custom IOPS as details[0].minIops and details[0].maxIops. 
CloudStack stores them in vm_instance_details with those same names (minIops / 
maxIops).
   
   When the ROOT volume is created, CloudOrchestrator.createVirtualMachine() 
reads IOPS using the API constants MIN_IOPS and MAX_IOPS. Those constants are 
miniops and maxiops.
   
   The names do not match, so the lookup finds nothing. DiskOfferingInfo is 
left with no IOPS, and VolumeOrchestrator creates the ROOT volume with empty 
min_iops / max_iops.
   
   It is a regression from Apache CloudStack PR: 
https://github.com/apache/cloudstack/pull/8800 (April 2024).
   
   <img width="3436" height="1168" alt="Image" 
src="https://github.com/user-attachments/assets/f4abbc94-ac2d-467f-8a39-397aea983d55";
 />
   
   ### Observations:
   
   vm_instance_details has minIops / maxIops
   
   <img width="1028" height="378" alt="Image" 
src="https://github.com/user-attachments/assets/7bee2c94-b0b2-42fd-89f8-3697d8f6aaef";
 />
   
   ROOT volume min_iops / max_iops are NULL
   
   <img width="1518" height="256" alt="Image" 
src="https://github.com/user-attachments/assets/37c124b8-cf2c-4b3a-9815-a703ba8c4907";
 />
   
   
   ### versions
   
   CloudStack: 4.20 and later, including 4.23.
   
   ### The steps to reproduce the bug
   
   1. Go to Instances → Add Instance.
   2. Select a template (do not use ISO).
   3. In Compute offering, set Override root disk offering to true and select 
the Custom IOPS disk offering for the ROOT disk.
   4. Enter min IOPS and max IOPS (for example, 100 and 1000).
   5. Complete the wizard and deploy the VM.
   6. After the VM is created, check the ROOT volume and VM details
   
   ### What to do about it?
   
   ### Impact
   
   - The VM deploys with no error even though min and max IOPS are not applied 
on the ROOT volume.
   - Expected IOPS are not served because custom min/max IOPS are not set on 
the ROOT volume, so there is no IOPS guarantee.
   
   ### Expected Behaviour
   Custom IOPS from deploy-VM details must be applied to the root volume 


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