seaweedfs/weed/storage/volume_create_linux.go

20 lines
467 B
Go

// +build linux
package storage
import (
"os"
"syscall"
"github.com/chrislusf/seaweedfs/weed/glog"
)
func createVolumeFile(fileName string, preallocate int64, memoryMapSizeMB uint32) (*os.File, error) {
file, e := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
if preallocate != 0 {
syscall.Fallocate(int(file.Fd()), 1, 0, preallocate)
glog.V(0).Infof("Preallocated %d bytes disk space for %s", preallocate, fileName)
}
return file, e
}