wrenn-releases

Files

pptx704 38799770db fix: inflate balloon before snapshot to reduce memfile size

Firecracker dumps the entire VM memory region regardless of guest
usage. A 20GB VM using 500MB still produces a ~20GB memfile because
freed pages retain stale data (non-zero blocks).

Inflate the balloon device before snapshot to reclaim free guest
memory. Balloon pages become zero from FC's perspective, allowing
ProcessMemfile to skip them. This reduces memfile size from ~20GB
to ~1-2GB for lightly-used VMs.

- Pause: read guest memory usage, inflate balloon to reclaim free
  pages, wait 2s for guest kernel to process, then proceed
- Resume: deflate balloon to 0 after PostInit so guest gets full
  memory back
- createFromSnapshot: same deflation since template snapshots
  inherit inflated balloon state
- All balloon ops are best-effort with debug logging on failure

2026-05-05 15:38:04 +06:00

conntracker.go

v0.0.1 (#8 )

2026-04-09 19:24:49 +00:00

fcversion.go

Refactored to maintain a separate cloud version

2026-04-15 21:41:48 +06:00

images.go

Shrink minimal rootfs on graceful host agent shutdown

2026-04-16 16:26:50 +06:00

manager.go

fix: inflate balloon before snapshot to reduce memfile size