v0.17.0

firecracker-microvm/firecrackerv0.17.0Jun 14, 2019by dianpopa

AI Summary

Adds a PATCH API endpoint for updating VM configuration before boot, introduces alpha aarch64 support, adds signal handlers for SIGBUS and SIGSEGV, and enforces mandatory fields for machine configuration.

Key Highlights

New PATCH /machine-config/ API call for updating VM config
Alpha support for aarch64 architecture
Added signal handlers for SIGBUS and SIGSEGV
Mandatory fields for machine config PUT requests

Breaking Changes

`vcpu_count`, `mem_size_mib`, and `ht_enabled` are now mandatory for PUT requests on `/machine-config/`

New Features

PATCH machine configuration API
Alpha aarch64 support
Metrics for MMDS, Net, and Block device operations
Signal handling utilities documentation

Full Release Notes

### Added

- New API call: `PATCH /machine-config/`, used to update VM configuration,
  before the microVM boots.
- Added an experimental swagger definition that includes the specification for
  the vsock API call.
- Added a signal handler for `SIGBUS` and `SIGSEGV` that immediately terminates
  the process upon intercepting the signal.
- Added documentation for signal handling utilities.
- Added [alpha] aarch64 support.
- Added metrics for successful read and write operations of MMDS, Net and Block devices.

### Changed

- `vcpu_count`, `mem_size_mib` and `ht_enabled` have been changed to be mandatory
  for `PUT` requests on `/machine-config/`.
- Disallow invalid seccomp levels by exiting with error.

### Fixed

- Incorrect handling of bind mounts within the jailed rootfs.
- Corrected the guide for `Alpine` guest setup.