log-analysis

Kernel log search uses grep-like patterns to locate errors, panics, and faults in timestamped Breenix logs. Use the find-in-logs script with flags like -i for case-insensitive matching, or grep directly on log files with context flags (-A, -B) to extract surrounding lines that reveal failure causes.

Diagnose kernel test failures by searching logs for panic or fault signals, then extracting context lines before and after to trace execution flow. Checkpoint signals and subsystem initialization patterns reveal where the boot sequence broke, pinpointing the error source.

Execution flow tracing follows the kernel's boot sequence and subsystem initialization by searching for checkpoint signals and timestamped log entries. Extract surrounding context to understand behavior progression and identify where execution diverged from expected patterns.

Extract surrounding context using grep with -A (after) and -B (before) flags, or the find-in-logs script with similar parameters. This reveals the events and system state leading up to and following a critical log entry like a panic or test-completion signal.

Breenix kernel logs follow timestamped file naming patterns like breenix_YYYYMMDD_*.log. Knowing these patterns enables efficient log location and targeted searches across multiple log files without manual path lookup.

Basic grep handles most kernel log searches, but the find-in-logs script provides streamlined searching with support for scriptable patterns and checkpoint recognition. Both approaches work; the script adds convenience for repeated or complex queries.