Incorrect space usage reported for objects in vSAN ESA Cluster using Command Line option

Products

• VMware vSAN 7.x
• VMware vSAN 8.x

Issue/Introduction

‘esxcli vsan debug object list’ command output showing discrepancy in the ‘Used’ space and the ‘Size’ for objects.

For Example, a 510 GB disk showing used space of 2842 GB in the vSAN datastore.

Object UUID: bd8c9d5e-eac8-b4e5-4cec-xxxxxxxxxxxx:
Version: 10
Health: Healthy
Owner: ESX_01
Size: 510.00 GB
Used: 2842.00 GB

Storage policy change for these objects will report a huge resync data.

Environment

VMware VSAN 7.x

VMware vSAN 8.x

Resolution

A script attached with this article can be utilized to efficiently retrieve and display the actual usage of each object within the vSAN ESA cluster.

Syntax:

 

To query a specific object by its UUID:

python query_object_capacity_usage.py --uuid 55fe3b67-xxxx-xxx-xxxx-xxxxxxxxxxxx

 

By default, the script will display capacity usage for all objects:

python query_object_capacity_usage.py

 

Options:

  --uuid            Filter by object UUID.
  --rawSize         Display the raw capacity data (in bytes).
  --csv             Output data in CSV format (comma-separated).

 

Note

• Use the --rawSize option to view capacity usage in bytes for detailed analysis.
• Use the --csv option for exporting results in a format suitable for spreadsheet applications.