Linux does not have a single, simple, persistent CBT interface like VMware’s. However, for many workloads, with thin_delta or ZFS/Btrfs snapshots provides efficient change tracking. Backup software must adapt to these storage-specific features.
Elias began the "interrogation." He used strace to spy on the system calls. He wasn't attacking; he was watching. He watched how the CPU talked to the memory. He watched how the file system inhaled data and exhaled logs.
It was a 'Zombie Process'—a remnant of a previous crash that the system hadn't cleaned up. It was dormant, eating up resources, waiting for a specific trigger to wake up and corrupt the database. If this went live during trading hours, the bank would lose millions. linux cbt
User-space tools can use inotify to track file changes, then map files to blocks using FIEMAP ioctl or filefrag .
The screen flooded with data. Ports opening, services running. It was a chaotic heartbeat. Most junior admins stopped here, satisfied they had a map. But the "Linux CBT" protocol required going deeper. Linux does not have a single, simple, persistent
"Start the CBT," Marcus commanded. "Stimulate the system."
Elias exhaled, his hands shaking. He ran a diagnostic. top . The CPU was idle. The memory was free. The system had survived the cardiac arrest. Elias began the "interrogation
Change Block Tracking (CBT) is a mechanism that identifies which blocks on a storage device have been modified since a particular point in time. It enables efficient incremental backups by allowing backup software to read only changed data instead of scanning entire volumes.