Look for accompanying SCSI sense codes. A sense key of 0xe (Miscompare) confirmed alongside hardware status 0x2 (Check Condition) confirms that the storage array explicitly rejected the write because the block data changed. Step 2: Update Storage Array Firmware
On Terminal 42, a single line of crimson text bled across the screen:
: The host sent a request to write a new lock value if the current value matched what it expected. The storage array responded that the values did
When the disk block reports that the atomic test-and-set has returned false, it is not merely a technical error or a transient state. It is a profound philosophical statement about the nature of reality, time, and the impossibility of true sameness in a dynamic system. Look for accompanying SCSI sense codes
This operation is "atomic," meaning it is indivisible. It occurs in a single, infinitesimal slice of time. It is the computing equivalent of a quantum measurement, freezing the probability wave of the system into a single, observable state.
In rare cases, a corruption of the VMFS metadata locking mechanism (vclock) stops the counter, causing lock requests to fail.
In the world of low-level systems programming and distributed databases, few error messages are as cryptic—and as critical—as If you have encountered this error while working with a clustered file system, a distributed lock manager, or a custom storage engine, you know the frustration it brings. The operation failed unexpectedly, leaving your application in an inconsistent state. The storage array responded that the values did
: Used SCSI reservations to lock an entire LUN (Logical Unit Number), preventing other hosts from accessing it entirely during updates. ATS Method
The error message indicates a critical synchronization failure between a VMware ESXi host and its underlying shared storage array. This issue directly impacts the VMFS (Virtual Machine File System) locking mechanism , which prevents data corruption when multiple hypervisors access the same storage volume.
By aligning your host configurations, storage network optimization, and storage controller firmware, you can eliminate ATS equality failures and restore predictable performance to your shared infrastructure. To help narrow down the resolution path, tell me: It occurs in a single, infinitesimal slice of time
Before ATS was introduced, if a host wanted to modify metadata on a shared storage volume (such as creating a virtual disk or powering on a VM), it had to lock the entire logical unit number (LUN) using SCSI reservation locks. This caused massive performance bottlenecks. ATS introduces a granular approach:
The COMPARE AND WRITE primitive relies heavily on the storage controller's internal operating system to track locks seamlessly. Bugs in the storage array's firmware can cause the controller to misreport the state of a block or fail to clear a lock lock after a host disconnects. 4. Heartbeat Timeouts on Shared Datastores
or VMFS corruption, official support may be needed to run remediation procedures like vclock file resets storage array compatibility for your current hardware setup? ESXi host HBAs offline - Broadcom support portal