Atomic Test And Set Of Disk Block Returned False For Equality ((exclusive)) 【2025】

The following report documents an issue encountered during a recent testing phase, where an atomic test and set operation on a disk block returned an unexpected result, indicating that the block's contents were not equal as anticipated.

: The host locks the entire LUN to write a single metadata update. This causes massive bottlenecks during cluster-wide operations. The following report documents an issue encountered during

Check if multiple hosts are logging the error for the exact same volume ID (UUID) simultaneously, which points to a contention or fabric issue. Step 2: Correlate with Infrastructure Events Check if multiple hosts are logging the error

Check kernel logs ( dmesg ), system logs ( /var/log/messages ), and application logs: Ensure that your system has a reliable lock

Most people see this error in the context of .

If nodes are failing to release locks before their leases expire, increase the lease duration. Ensure that your system has a reliable lock reclamation mechanism (e.g., a watchdog or a lock monitor).