In a storage context, the error "atomic test and set of disk block returned false for equality" typically indicates a locking failure in VMware ESXi environments using VAAI (vSphere Storage APIs for Array Integration) .
A return value of false indicates that the atomic condition was not met. In a storage context, the error "atomic test
The error message "atomic test and set of disk block returned false for equality" is a critical VMware ESXi kernel error related to VAAI (vSphere Storage APIs Array Integration) He expected to see a stray bit flipped
“atomic test and set of disk block returned false for equality” The 3 Usual Suspects Here is where the
Fix:
He bypassed the software layers, diving straight into the raw hex code of the disk block. He expected to see a stray bit flipped by a cosmic ray or a failing magnetic platter. Instead, he saw something impossible. The data in Block 0x4F3 was changing while he looked at it.
Here is where the debugging gets tricky. This error rarely means "a bug in the code." It usually means a hardware or configuration mismatch.