Release 0.8.0

## [Unreleased]

## [0.8.0] - 2020-09-15

## Added

- Both client library and daemon have been extended to support the ofi+verbs

  protocol.

- A new Python testing harness has been implemented to support integration

  tests. The end goal is to increase the robustness of the code in the mid- to

  long-term.

- The RPC protocol and the usage of shared memory for intra-node communication

  no longer need to be activated on compile time. New arguments

  `-P|--rpc-protocol` and `--auto-sm` have been added to the daemon to this

  effect. This configuration options are propagated to clients when they

  initialize and contact daemons.

- Native support for the Omni-Path network protocol by choosing the `ofi+psm2`

  RPC protocol. Note that this requires `libfabric`'s version to be greater

  than `1.8` as well as `psm2` to be installed in the system. Clients must set

  `FI_PSM2_DISCONNECT=1` to be able to reconnect once the client is shut down

  once.

  *Known limitations:* Client reconnect doesn't always work. Apparently, if

  clients reconnect too fast the servers won't accept the connections. Also,

  currently more than 16 clients per node are not supported.

- A new execution mode called `GekkoFWD` that allows GekkoFS to run as

  a user-level I/O forwarding infrastructure for applications. In this mode,

  I/O operations from an application are intercepted and forwarded to a single

  GekkoFS daemon that is chosen according to a pre-defined distribution. In the

  daemons, the requests are scheduled using the AGIOS scheduling library before

  they are dispatched to the shared backend parallel file system.

- The `fsync()` system call is now fully supported.

## Changed

- Argobots tasks in the daemon are now wrapped in a dedicated class,

  effectively removing the dependency. This lays ground work for future

  non-Argobots I/O implementations.

- The `readdir()` implementation has been refactored and improved.

- Improvements on how to the installation scripts manage dependencies.

## Fixed

- The server sometimes crashed due to uncaught system errors in the storage

  backend. This has now been fixed.

- Fixed a bug that broke `ls` on some architectures.

## [0.7.0] - 2020-02-05

## Added

 - Adedd support for `eventfd()`and `eventfd2()` system calls.

project(

    GekkoFS

    VERSION 0.7.0

    VERSION 0.8.0

)

enable_testing()

# GekkoFS

[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)

[![pipeline status](https://storage.bsc.es/gitlab/hpc/gekkofs/badges/master/pipeline.svg)](https://storage.bsc.es/gitlab/hpc/gekkofs/commits/master)

GekkoFS is a file system capable of aggregating the local I/O capacity and performance of each compute node

in a HPC cluster to produce a high-performance storage space that can be accessed in a distributed manner.

This storage space allows HPC applications and simulations to run in isolation from each other with regards 

                            available.

  -r [ --rootdir ] arg      Local data directory where GekkoFS data for this 

                            daemon is stored.

  -i [ --metadir ] arg      Metadata directory where GekkoFS' RocksDB data 

  -i [ --metadir ] arg      Metadata directory where GekkoFS RocksDB data

                            directory is located. If not set, rootdir is used.

  -l [ --listen ] arg       Address or interface to bind the daemon to. 

                            Default: local hostname.