Previously, the agent shared a single PrevReadTime timestamp across all
collection intervals (e.g., 1s and 60s). This caused the 60s collector
to divide its accumulated 60s byte delta by the tiny time elapsed since
the last 1s collection, resulting in astronomically inflated network
rates. The fix introduces per-cache-time read time tracking, ensuring
calculations for each interval use their own independent timing context.
- Update smartFetchMap expiration when agent smart interval changes
- Prevent background SMART fetching before initial system details are
loaded
- Add buffer to SMART fetch timing check
- Get rid of unnecessary pointers in expirymap
- Introduced a new test file `alerts_disk_test.go` to validate the behavior of disk alerts using historical data for extra filesystems.
- Enhanced the `HandleSystemAlerts` function to correctly calculate disk usage for extra filesystems based on historical records.
- Updated the `SystemAlertStats` struct to include `ExtraFs` for tracking additional filesystem statistics.
Move tracking of the last SMART data fetch from individual System
instances to the SystemManager using a TTL-based ExpiryMap.
This ensures that the SMART_INTERVAL is respected even if an
agent connection is dropped and re-established, preventing
redundant data collection on every reconnect.
- Match FILESYSTEM directly against I/O devices if partition lookup
fails
- Fall back to the most active I/O device if no root device is detected
- Add WARN logs in final fallback case to most active device
findIoDevice now normalizes device names and falls back to prefix-based
matching when partition names differ from IOCounter names (e.g. nda0p2 →
nda0 on FreeBSD). The most-active prefix-related device is selected,
avoiding the broad "most active of all" heuristic that caused Docker
misattribution in #1737.
Add curl retries/timeouts, archive integrity checks, binary existence
checks, and temp dir cleanup on all failure paths. Unify --mirror flag
handling in hub script to match agent. Use cat instead of tee for
systemd service file, quiet systemctl output.
