[saurabhkushwaha438]

Description

Fixes #14082

1. Conversion from MiB to GiB (Display & Rounding)

• Binary conversion is used (1 GiB = 1024 MiB).
• When offerings with predefined constraints or initial values are loaded in MiB, or when switching from MiB to GiB:
  $$\text{displayValue} = \text{parseFloat}\left(\left(\frac{\text{rawMemory}}{1024}\right)\text{.toFixed(2)}\right)$$
• The display value is rounded to 2 decimal places to keep the UI clean, readable, and intuitive for users.
• Slider step dynamically adjusts:
  • In GiB mode: step is set to 0.01 (or smaller for sub-GiB offerings) with precision 2.
  • In MiB mode: step is set to 1 with integer precision 0.

2. Conversion from GiB to MiB (Backend Value Emission)

• CloudStack APIs and backend services expect memory allocations in integer MiB.
• When the user selects or inputs memory in GiB:
  $$\text{memoryInMiB} = \text{Math.round}(\text{displayValue} \times 1024)$$
• Exact Boundary Protection: If a compute offering has minimum/maximum memory constraints (minMemory / maxMemory), selecting the exact minimum or maximum bound in GiB directly maps to the exact integer minMemory or maxMemory in MiB to eliminate any potential off-by-one rounding discrepancies.

💬 Feedback Needed: Fractional GiB to Integer MiB Rounding

• Observation: Converting decimal GiB values to MiB often produces fractional values (e.g., 1.51 GiB × 1024 = 1546.24 MiB).
• Current Behavior: The UI rounds this to the nearest integer (1546 MiB), which is then emitted in the API payload and consumed by backend hypervisor managers.
• Reviewer Input: Looking for maintainer feedback on whether standard nearest-integer rounding (Math.round) is acceptable, or if we should apply ceiling (Math.ceil) to guarantee the VM always receives at least the requested GiB amount.

bandicam.2026-10-16.10-21-12-210.mp4

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 20.76%. Comparing base (7ed0cec) to head (c401af2).
⚠️ Report is 82 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #14413      +/-   ##
============================================
+ Coverage     19.91%   20.76%   +0.84%     
- Complexity    20198    21905    +1707     
============================================
  Files          6373     6496     +123     
  Lines        577230   591644   +14414     
  Branches      70696    72601    +1905     
============================================
+ Hits         114936   122835    +7899     
- Misses       449736   455471    +5735     
- Partials      12558    13338     +780     

Flag	Coverage Δ
uitests	3.87% <ø> (+0.16%)	⬆️
unittests	22.07% <ø> (+0.88%)	⬆️

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[nvazquez]

@blueorangutan ui

[blueorangutan]

@nvazquez a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/14413 (QA-JID-1003)

[Damans227]

@blueorangutan ui

[blueorangutan]

@Damans227 a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/14413 (QA-JID-1004)