Changelog formatting, changed kreon appearances to parallax

CHANGELOG.md

 # Changelog
+
 All notable changes to GekkoFS project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres
+to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
-- Parallax experimental integration 
-Support for different databases backend
-New Docker Images and scripts (0.9.1)
-([!110](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/110)).
-- Added `--clean-rootdir-finish` argument to remove rootdir/metadir at the end.
+
+### New
+
+- Added new experimental metadata backend:
+  Parallax ([!110](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/110)).
+    - Added support to use multiple metadata backends.
+    - Added `--clean-rootdir-finish` argument to remove rootdir/metadir at the end when the daemon finishes.
+
+### Changed
+
+- `-c` argument has been moved to `--clean-rootdir-finish` and is now used to clean rootdir/metadir on daemon
+  shutdown ([!110](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/110)).
+
+### Removed
+
+### Fixed
 
 ## [0.9.0] - 2022-02-22
+
 ### New
+
 - GekkoFS now uses C++17 (!74).
-- Added a new `dirents_extended` function which can improve `find` operations.
-A corresponding example how to use this function can be found at 
-`examples/gfind/gfind.cpp` with a non-mpi version at `examples/gfind/sfind.cpp` 
-([!73](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/73)).
-- Code coverage reports for the source code are now generated and tracked 
-([!77](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/77)).
+- Added a new `dirents_extended` function which can improve `find` operations. A corresponding example how to use this
+  function can be found at
+  `examples/gfind/gfind.cpp` with a non-mpi version at `examples/gfind/sfind.cpp`
+  ([!73](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/73)).
+- Code coverage reports for the source code are now generated and tracked
+  ([!77](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/77)).
 - Considerable overhaul and new features of the GekkoFS testing facilities 
 ([!120](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/120), 
 [!121](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/121)).
@@ -82,8 +96,6 @@ Note that tests still require `Boost_preprocessor`.
 ([!116](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/116)).
 - Fixed an issue where `LOG_OUTPUT_TRUNC` did not work as expected ([!118](https://storage.bsc.es/gitlab/hpc/gekkofs/-/merge_requests/118)).
 
-- Added new metadata backend, kreon.
-
 ## [0.8.0] - 2020-09-15
 ### New
 - Both client library and daemon have been extended to support the ofi+verbs

README.md

@@ -110,7 +110,7 @@ Options:
   --dbbackend               'rocksdb' (default) or 'parallaxdb' can be specified as
                             metadata backend, in that case a file in 'metadir' named
                             rocksdbx is created. Parallaxdb support is experimental.
-  --kreonsize               'parallaxdb' specific, size of the metadata file in GB. Minimal is 8 GB
+  --parallax_size               'parallaxdb' specific, size of the metadata file in GB. Minimal is 8 GB
                             (default 8, 8 GB)
   --version                 Print version and exit.
 ```

docs/sphinx/users/running.md

@@ -78,7 +78,7 @@ Further options are available
     --dbbackend               'rocksdb' (default) or 'parallaxdb' can be specified as
                                 metadata backend, in that case a file in 'metadir' named
                                 rocksdbx is created. Parallaxdb support is experimental.
-    --kreonsize               'parallaxdb' specific, size of the metadata file in GB. Minimal is 8 GB
+    --parallax_size               'parallaxdb' specific, size of the metadata file in GB. Minimal is 8 GB
                               (default 8, 8 GB)
    --version                   Print version and exit.
 ````

include/daemon/classes/fs_data.hpp

@@ -71,10 +71,9 @@ private:
     // Database
     std::shared_ptr<gkfs::metadata::MetadataDB> mdb_;
     std::string dbbackend_;
-    bool keep_rootdir_ = true;
-    // Kreon
 
-    unsigned long long size_md_ = 8589934592ull;
+    // Parallax
+    unsigned long long parallax_size_md_ = 8589934592ull;
 
     // Storage backend
     std::shared_ptr<gkfs::data::ChunkStorage> storage_;
@@ -206,10 +205,10 @@ public:
     blocks_state(bool blocks_state);
 
     unsigned long long
-    kreon_size_md() const;
+    parallax_size_md() const;
 
     void
-    kreon_size_md(unsigned int size_md);
+    parallax_size_md(unsigned int size_md);
 };
 
 } // namespace daemon

src/daemon/backend/metadata/parallax_backend.cpp

@@ -90,7 +90,7 @@ ParallaxBackend::ParallaxBackend(const std::string& path)
     }
 
     if(size == 0) {
-        size = GKFS_DATA->kreon_size_md();
+        size = GKFS_DATA->parallax_size_md();
 
         lseek(fd, size - 1, SEEK_SET);
         std::string tmp = "x";
@@ -334,8 +334,6 @@ ParallaxBackend::decrease_size_impl(const std::string& key, size_t size) {
 std::vector<std::pair<std::string, bool>>
 ParallaxBackend::get_dirents_impl(const std::string& dir) const {
     auto root_path = dir;
-    //   lock_guard<recursive_mutex> lock_guard(kreon_mutex_);
-
     struct par_key K;
 
     str2par(root_path, K);

src/daemon/classes/fs_data.cpp

@@ -211,14 +211,14 @@ FsData::blocks_state(bool blocks_state) {
 }
 
 unsigned long long
-FsData::kreon_size_md() const {
-    return size_md_;
+FsData::parallax_size_md() const {
+    return parallax_size_md_;
 }
 
 void
-FsData::kreon_size_md(unsigned int size_md) {
-    FsData::size_md_ =
-            (unsigned long long) size_md * 1024ull * 1024ull * 1024ull;
+FsData::parallax_size_md(unsigned int size_md) {
+    FsData::parallax_size_md_ = static_cast<unsigned long long>(
+            size_md * 1024ull * 1024ull * 1024ull);
 }
 
 } // namespace gkfs::daemon

src/daemon/daemon.cpp

@@ -80,7 +80,7 @@ struct cli_options {
     string hosts_file;
     string rpc_protocol;
     string dbbackend;
-    string kreonsize;
+    string parallax_size;
 };
 
 /**
@@ -641,8 +641,8 @@ parse_input(const cli_options& opts, const CLI::App& desc) {
     } else
         GKFS_DATA->dbbackend(gkfs::metadata::rocksdb_backend);
 
-    if(desc.count("--kreonsize")) { // Size in GB
-        GKFS_DATA->kreon_size_md(stoi(opts.kreonsize));
+    if(desc.count("--parallaxsize")) { // Size in GB
+        GKFS_DATA->parallax_size_md(stoi(opts.parallax_size));
     }
 }
 
@@ -708,7 +708,7 @@ main(int argc, const char* argv[]) {
                 "Metadata database backend to use. Available: {rocksdb, parallaxdb}'\n"
                 "RocksDB is default if not set. Parallax support is experimental.\n"
                 "Note, parallaxdb creates a file called rocksdbx with 8GB created in metadir.");
-    desc.add_option("--kreonsize",opts.kreonsize,
+    desc.add_option("--parallaxsize", opts.parallax_size,
                     "parallaxdb - metadata file size in GB (default 8GB), "
                     "used only with new files");
     desc.add_flag("--version", "Print version and exit.");