OSv new release 0.55.0 published

[Waldek Kozaczuk]

https://github.com/cloudius-systems/osv/releases/tag/v0.55.0

"This new release focuses on improving documentation, build system, and testing. It also introduces Travis-based CI/CD pipeline to publish artifacts to "nightly repo". In addition, it also adds many new features/improvements:

• preliminary virtio-fs support
• QEMU microvm machine support
• numerous improvements to dynamic linker including local-exec TLS
• kernel smaller by 300 K
• new HTTP monitoring API
• less memory utilization with ROFS

Highlights

• Revised existing documentation and added a new one
  • Main README
  • Dynamic Linker
  • Memory Allocation
  • Automated Testing Framework
  • Building from host guide
• Improved build process
  • Setup Travis-based CI/CD pipeline to automatically build and publish kernel and artifacts
  • Setup process to publish OSv build docker images to docker hub
  • Cleaned up build process by eliminating the "build from externals" mode
  • Migrated python scripts to version 3
  • Removed dependency on JDK to build the kernel
• Merged IPV6 code from Spirent into a new branch
• Removed the dependency on the boost program options library from kernel and utility apps which made kernel smaller by 300K
• Created Automated Testing Framework designed to run > 30 real apps, some of them under stress using ab or wrk tools.
• Improved dynamic linker
  • Added local-exec TLS support
  • Expose musl version of libc
  • Handle RTLD_NEXT
  • Added some bionic unit tests
• Resurrected aarch64 support
  • Simple hello world app works now on QEMU and Raspberry PI 4 with KVM enabled
  • Basic support in run.py
• Added support of QEMU microvm machine
• Added clock synchronization mechanism with host on KVM
• File system improvements
  • ZFS improvements
    • Can mount and modify OSv-build drive on a host and use it back on OSv
  • NFS
    • Changed filesystem driver to be a library
  • ROFS
    • Improved memory utilization by integrating with pagecache
  • Virtio-FS
    • Added preliminary support
• Added new HTTP monitoring API module

New Apps

• WebAssembly/Wasmer examples
• Running Docker images example
• Deno
• KeyDB

Closed Issues

• #352 - Thread-local storage doesn't work in PIE
• #743 - Stop using libraries and header files from external/
• #784 - realloc crashes with "page fault outside application"
• #820 - Add ability to build read-only version of httpserver-api module for monitoring purposes
• #854 - Allow non-contiguous malloc() when memory is fragmented
• #880 - Tomcat doesn't run on openjdk8-fedora
• #916 - scripts/loader.py is not python3 compatible
• #918 - Importing ZFS volume fails on OSv
• #975 - mysql cannot working with fs=ramfs
• #976 - Fix annoying warnings while building tests
• #980 - cpiod.so is much too big
• #1014 - Make kernel not to use boost program_options library
• #1015 - OSv guest's wall clock does not follow host's wall clock
• #1040 - Boost 1.69.0 on Fedora 30 contains hidden symbols
• #1044 - Test build with Travis CI
• #1045 - Delay processing PT_NOTE segments until all PT_LOAD segments are mmapped
• #1053 - httpserver should not use boost::program_options
• #1056 - Upgrade utility scripts to Python 3
• #1056 - Virtio-net: use large buffers when VIRTIO_NET_F_MRG_RXBUF is not negotiated
• #1065 - When relocating do not lookup STB_LOCAL symbols by name
• #1066 - Ignore ELF versioning table when object looks up symbols by name in itself (self-lookup)
• #1067 - Make symbols visible to the object itself from threads created by INIT functions
• #1070 - Running Linux apps compiled and linked against musl
• #1073 - Bugs in itimer::work()
• #1074 - Cannot run YCSB with Redis on OSV
• #1077 - malloc_usable_size of malloc_large returns incorrect value
• #1078 - Eliminate libnfs external module"