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minio/pkg/disk/disk.go

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1.5 KiB

/*
* MinIO Cloud Storage, (C) 2018-2020 MinIO, Inc.
*
* 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 disk
// Info stat fs struct is container which holds following values
// Total - total size of the volume / disk
// Free - free size of the volume / disk
// Files - total inodes available
// Ffree - free inodes available
// FSType - file system type
type Info struct {
Total uint64
Free uint64
Used uint64
Files uint64
Ffree uint64
FSType string
}
// SameDisk reports whether di1 and di2 describe the same disk.
func SameDisk(di1, di2 Info) bool {
if di1.Total != di2.Total {
// disk total size different
return false
}
if di1.Files != di2.Files {
// disk total inodes different
return false
}
// returns true only if Used, Free are same, then its the same disk.
// we are deliberately not using free inodes as that is unreliable
// due the fact that Ffree can vary even for temporary files
return di1.Used == di2.Used && di1.Free == di2.Free
}