minio/pkg/disk/stat_linux_s390x.go
Harshavardhana 2b4eb87d77
pick disks which are common maximally used (#10600)
further optimization to ensure that good disks
are always used for listing, other than healing
we only use disks that are maximally used.
2020-09-29 22:54:02 -07:00

82 lines
2.2 KiB
Go

// +build linux,s390x
/*
* MinIO Cloud Storage, (C) 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
import (
"fmt"
"strconv"
"syscall"
)
// fsType2StringMap - list of filesystems supported on linux
var fsType2StringMap = map[string]string{
"1021994": "TMPFS",
"137d": "EXT",
"4244": "HFS",
"4d44": "MSDOS",
"52654973": "REISERFS",
"5346544e": "NTFS",
"58465342": "XFS",
"61756673": "AUFS",
"6969": "NFS",
"ef51": "EXT2OLD",
"ef53": "EXT4",
"f15f": "ecryptfs",
"794c7630": "overlayfs",
"2fc12fc1": "zfs",
"ff534d42": "cifs",
"53464846": "wslfs",
}
// getFSType returns the filesystem type of the underlying mounted filesystem
func getFSType(ftype uint32) string {
fsTypeHex := strconv.FormatUint(uint64(ftype), 16)
fsTypeString, ok := fsType2StringMap[fsTypeHex]
if !ok {
return "UNKNOWN"
}
return fsTypeString
}
// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string) (info Info, err error) {
s := syscall.Statfs_t{}
err = syscall.Statfs(path, &s)
if err != nil {
return Info{}, err
}
reservedBlocks := s.Bfree - s.Bavail
info = Info{
Total: uint64(s.Frsize) * (s.Blocks - reservedBlocks),
Free: uint64(s.Frsize) * s.Bavail,
Files: s.Files,
Ffree: s.Ffree,
FSType: getFSType(s.Type),
}
// Check for overflows.
// https://github.com/minio/minio/issues/8035
// XFS can show wrong values at times error out
// in such scenarios.
if info.Free > info.Total {
return info, fmt.Errorf("detected free space (%d) > total disk space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
}
info.Used = info.Total - info.Free
return info, nil
}