示例#1
0
func openStore(cmd *cobra.Command, dir string, stopper *stop.Stopper) (*engine.RocksDB, error) {
	cache := engine.NewRocksDBCache(512 << 20)
	defer cache.Release()
	maxOpenFiles, err := server.SetOpenFileLimitForOneStore()
	if err != nil {
		return nil, err
	}
	db, err := engine.NewRocksDB(
		roachpb.Attributes{},
		dir,
		cache,
		0,
		maxOpenFiles,
	)
	if err != nil {
		return nil, err
	}
	stopper.AddCloser(db)
	return db, nil
}
示例#2
0
文件: config.go 项目: knz/cockroach
// CreateEngines creates Engines based on the specs in ctx.Stores.
func (cfg *Config) CreateEngines() (Engines, error) {
	engines := Engines(nil)
	defer engines.Close()

	if cfg.enginesCreated {
		return Engines{}, errors.Errorf("engines already created")
	}
	cfg.enginesCreated = true

	cache := engine.NewRocksDBCache(cfg.CacheSize)
	defer cache.Release()

	var physicalStores int
	for _, spec := range cfg.Stores.Specs {
		if !spec.InMemory {
			physicalStores++
		}
	}
	openFileLimitPerStore, err := setOpenFileLimit(physicalStores)
	if err != nil {
		return Engines{}, err
	}

	skipSizeCheck := cfg.TestingKnobs.Store != nil &&
		cfg.TestingKnobs.Store.(*storage.StoreTestingKnobs).SkipMinSizeCheck
	for _, spec := range cfg.Stores.Specs {
		var sizeInBytes = spec.SizeInBytes
		if spec.InMemory {
			if spec.SizePercent > 0 {
				sysMem, err := GetTotalMemory()
				if err != nil {
					return Engines{}, errors.Errorf("could not retrieve system memory")
				}
				sizeInBytes = int64(float64(sysMem) * spec.SizePercent / 100)
			}
			if sizeInBytes != 0 && !skipSizeCheck && sizeInBytes < base.MinimumStoreSize {
				return Engines{}, errors.Errorf("%f%% of memory is only %s bytes, which is below the minimum requirement of %s",
					spec.SizePercent, humanizeutil.IBytes(sizeInBytes), humanizeutil.IBytes(base.MinimumStoreSize))
			}
			engines = append(engines, engine.NewInMem(spec.Attributes, sizeInBytes))
		} else {
			if spec.SizePercent > 0 {
				fileSystemUsage := gosigar.FileSystemUsage{}
				if err := fileSystemUsage.Get(spec.Path); err != nil {
					return Engines{}, err
				}
				sizeInBytes = int64(float64(fileSystemUsage.Total) * spec.SizePercent / 100)
			}
			if sizeInBytes != 0 && !skipSizeCheck && sizeInBytes < base.MinimumStoreSize {
				return Engines{}, errors.Errorf("%f%% of %s's total free space is only %s bytes, which is below the minimum requirement of %s",
					spec.SizePercent, spec.Path, humanizeutil.IBytes(sizeInBytes), humanizeutil.IBytes(base.MinimumStoreSize))
			}

			eng, err := engine.NewRocksDB(
				spec.Attributes,
				spec.Path,
				cache,
				sizeInBytes,
				openFileLimitPerStore,
			)
			if err != nil {
				return Engines{}, err
			}
			engines = append(engines, eng)
		}
	}

	if len(engines) == 1 {
		log.Infof(context.TODO(), "1 storage engine initialized")
	} else {
		log.Infof(context.TODO(), "%d storage engines initialized", len(engines))
	}
	enginesCopy := engines
	engines = nil
	return enginesCopy, nil
}