/
kv_rocksdb_linux.go
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/
kv_rocksdb_linux.go
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// Copyright 2017-2019 Lei Ni (nilei81@gmail.com)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package logdb
import (
"os"
"path/filepath"
"syscall"
)
func directIOSupported(dir string) bool {
testfp := filepath.Join(dir, ".direct_io_test_safe_to_delete.gopaxos")
defer os.Remove(testfp)
f, err := os.OpenFile(testfp, os.O_CREATE|syscall.O_DIRECT, 0x777)
if err != nil {
plog.Errorf("direct io failed: %v", err)
return false
}
f.Close()
return true
}