minio/cmd/storage-errors.go
Harshavardhana 8778828a03
fix: read metadata in O_DIRECT if configured and supported (#11594)
reduce the page-cache pressure completely by moving
the entire read-phase of our operations to O_DIRECT,
primarily this is going to be very useful for chatty
metadata operations such as listing, scanner, ilm, healing
like operations to avoid filling up the page-cache upon
repeated runs.
2021-02-22 01:36:17 -08:00

169 lines
5.7 KiB
Go

/*
* MinIO Cloud Storage, (C) 2015-2020 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 cmd
import "errors"
// errUnexpected - unexpected error, requires manual intervention.
var errUnexpected = StorageErr("unexpected error, please report this issue at https://github.com/minio/minio/issues")
// errCorruptedFormat - corrupted backend format.
var errCorruptedFormat = StorageErr("corrupted backend format, specified disk mount has unexpected previous content")
// errUnformattedDisk - unformatted disk found.
var errUnformattedDisk = StorageErr("unformatted disk found")
// errInconsistentDisk - inconsistent disk found.
var errInconsistentDisk = StorageErr("inconsistent disk found")
// errUnsupporteDisk - when disk does not support O_DIRECT flag.
var errUnsupportedDisk = StorageErr("disk does not support O_DIRECT")
// errDiskFull - cannot create volume or files when disk is full.
var errDiskFull = StorageErr("disk path full")
// errDiskNotDir - cannot use storage disk if its not a directory
var errDiskNotDir = StorageErr("disk is not directory or mountpoint")
// errDiskNotFound - cannot find the underlying configured disk anymore.
var errDiskNotFound = StorageErr("disk not found")
// errFaultyRemoteDisk - remote disk is faulty.
var errFaultyRemoteDisk = StorageErr("remote disk is faulty")
// errFaultyDisk - disk is faulty.
var errFaultyDisk = StorageErr("disk is faulty")
// errDiskAccessDenied - we don't have write permissions on disk.
var errDiskAccessDenied = StorageErr("disk access denied")
// errFileNotFound - cannot find the file.
var errFileNotFound = StorageErr("file not found")
// errFileNotFound - cannot find requested file version.
var errFileVersionNotFound = StorageErr("file version not found")
// errTooManyOpenFiles - too many open files.
var errTooManyOpenFiles = StorageErr("too many open files, please increase 'ulimit -n'")
// errFileNameTooLong - given file name is too long than supported length.
var errFileNameTooLong = StorageErr("file name too long")
// errVolumeExists - cannot create same volume again.
var errVolumeExists = StorageErr("volume already exists")
// errIsNotRegular - not of regular file type.
var errIsNotRegular = StorageErr("not of regular file type")
// errPathNotFound - cannot find the path.
var errPathNotFound = StorageErr("path not found")
// errVolumeNotFound - cannot find the volume.
var errVolumeNotFound = StorageErr("volume not found")
// errVolumeNotEmpty - volume not empty.
var errVolumeNotEmpty = StorageErr("volume is not empty")
// errVolumeAccessDenied - cannot access volume, insufficient permissions.
var errVolumeAccessDenied = StorageErr("volume access denied")
// errFileAccessDenied - cannot access file, insufficient permissions.
var errFileAccessDenied = StorageErr("file access denied")
// errFileCorrupt - file has an unexpected size, or is not readable
var errFileCorrupt = StorageErr("file is corrupted")
// errFileParentIsFile - cannot have overlapping objects, parent is already a file.
var errFileParentIsFile = StorageErr("parent is a file")
// errBitrotHashAlgoInvalid - the algo for bit-rot hash
// verification is empty or invalid.
var errBitrotHashAlgoInvalid = StorageErr("bit-rot hash algorithm is invalid")
// errCrossDeviceLink - rename across devices not allowed.
var errCrossDeviceLink = StorageErr("Rename across devices not allowed, please fix your backend configuration")
// errMinDiskSize - cannot create volume or files when disk size is less than threshold.
var errMinDiskSize = StorageErr("The disk size is less than 900MiB threshold")
// errLessData - returned when less data available than what was requested.
var errLessData = StorageErr("less data available than what was requested")
// errMoreData = returned when more data was sent by the caller than what it was supposed to.
var errMoreData = StorageErr("more data was sent than what was advertised")
// indicates readDirFn to return without further applying the fn()
var errDoneForNow = errors.New("done for now")
// errSkipFile returned by the fn() for readDirFn() when it needs
// to proceed to next entry.
var errSkipFile = errors.New("skip this file")
// StorageErr represents error generated by xlStorage call.
type StorageErr string
func (h StorageErr) Error() string {
return string(h)
}
// Collection of basic errors.
var baseErrs = []error{
errDiskNotFound,
errFaultyDisk,
errFaultyRemoteDisk,
}
var baseIgnoredErrs = baseErrs
// Is a one place function which converts all os.PathError
// into a more FS object layer friendly form, converts
// known errors into their typed form for top level
// interpretation.
func osErrToFileErr(err error) error {
if err == nil {
return nil
}
if osIsNotExist(err) {
return errFileNotFound
}
if osIsPermission(err) {
return errFileAccessDenied
}
if isSysErrNotDir(err) || isSysErrIsDir(err) {
return errFileNotFound
}
if isSysErrPathNotFound(err) {
return errFileNotFound
}
if isSysErrTooManyFiles(err) {
return errTooManyOpenFiles
}
if isSysErrHandleInvalid(err) {
return errFileNotFound
}
if isSysErrIO(err) {
return errFaultyDisk
}
if isSysErrInvalidArg(err) {
return errUnsupportedDisk
}
if isSysErrNoSpace(err) {
return errDiskFull
}
return err
}