This article describes what to do if changes to the size of a VMDK are not successful.
For information on changing the size of a VMDK, see Increasing the size of a virtual disk
Symptoms:
VMware vSphere ESXi 6.x
VMware vSphere ESXi 7.x
VMware vSphere ESXi 8.x
This issue can occur if the snapshots associated with the disk are not consolidated prior to expanding the VMDK.
To resolve the issue, consolidate all snapshots associated with the disk.
For more information, see Consolidating snapshots