seaweedfs/weed/storage/backend/volume_create_linux.go

23 lines
526 B
Go
Raw Normal View History

2017-01-08 19:01:46 +00:00
// +build linux
2020-04-11 21:27:25 +00:00
package backend
2017-01-08 19:01:46 +00:00
import (
"os"
"syscall"
"github.com/chrislusf/seaweedfs/weed/glog"
2017-01-08 19:01:46 +00:00
)
2020-04-11 21:27:25 +00:00
func CreateVolumeFile(fileName string, preallocate int64, memoryMapSizeMB uint32) (BackendStorageFile, error) {
file, e := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
if e != nil {
return nil, e
}
2017-01-08 19:01:46 +00:00
if preallocate != 0 {
syscall.Fallocate(int(file.Fd()), 1, 0, preallocate)
2020-10-04 08:35:32 +00:00
glog.V(1).Infof("Preallocated %d bytes disk space for %s", preallocate, fileName)
2017-01-08 19:01:46 +00:00
}
2020-04-11 21:27:25 +00:00
return NewDiskFile(file), nil
2017-01-08 19:01:46 +00:00
}