Detect underlying disk mount/unmount (#8408)
Krishna Srinivas
5 years ago
committed by
kannappanr
parent
8aaaa46be9
commit
980bf78b4d
@ -0,0 +1,190 @@ |
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/* |
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package cmd |
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import ( |
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"io" |
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) |
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// Detects change in underlying disk.
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type posixDiskIDCheck struct { |
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storage *posix |
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diskID string |
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} |
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func (p *posixDiskIDCheck) String() string { |
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return p.storage.String() |
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} |
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func (p *posixDiskIDCheck) IsOnline() bool { |
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storedDiskID, err := p.storage.getDiskID() |
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if err != nil { |
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return false |
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} |
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return storedDiskID == p.diskID |
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} |
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func (p *posixDiskIDCheck) LastError() error { |
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return p.storage.LastError() |
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} |
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func (p *posixDiskIDCheck) Close() error { |
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return p.storage.Close() |
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} |
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func (p *posixDiskIDCheck) SetDiskID(id string) { |
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p.diskID = id |
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} |
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func (p *posixDiskIDCheck) isDiskStale() bool { |
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if p.diskID == "" { |
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// For empty disk-id we allow the call as the server might be coming up and trying to read format.json
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// or create format.json
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return false |
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} |
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storedDiskID, err := p.storage.getDiskID() |
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if err == nil && p.diskID == storedDiskID { |
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return false |
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} |
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return true |
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} |
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func (p *posixDiskIDCheck) DiskInfo() (info DiskInfo, err error) { |
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if p.isDiskStale() { |
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return info, errDiskNotFound |
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} |
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return p.storage.DiskInfo() |
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} |
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func (p *posixDiskIDCheck) MakeVol(volume string) (err error) { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.MakeVol(volume) |
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} |
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func (p *posixDiskIDCheck) ListVols() ([]VolInfo, error) { |
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if p.isDiskStale() { |
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return nil, errDiskNotFound |
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} |
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return p.storage.ListVols() |
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} |
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func (p *posixDiskIDCheck) StatVol(volume string) (vol VolInfo, err error) { |
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if p.isDiskStale() { |
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return vol, errDiskNotFound |
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} |
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return p.storage.StatVol(volume) |
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} |
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func (p *posixDiskIDCheck) DeleteVol(volume string) (err error) { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.DeleteVol(volume) |
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} |
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func (p *posixDiskIDCheck) Walk(volume, dirPath string, marker string, recursive bool, leafFile string, readMetadataFn readMetadataFunc, endWalkCh chan struct{}) (chan FileInfo, error) { |
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if p.isDiskStale() { |
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return nil, errDiskNotFound |
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} |
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return p.storage.Walk(volume, dirPath, marker, recursive, leafFile, readMetadataFn, endWalkCh) |
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} |
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func (p *posixDiskIDCheck) ListDir(volume, dirPath string, count int, leafFile string) ([]string, error) { |
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if p.isDiskStale() { |
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return nil, errDiskNotFound |
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} |
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return p.storage.ListDir(volume, dirPath, count, leafFile) |
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} |
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func (p *posixDiskIDCheck) ReadFile(volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error) { |
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if p.isDiskStale() { |
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return 0, errDiskNotFound |
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} |
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return p.storage.ReadFile(volume, path, offset, buf, verifier) |
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} |
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func (p *posixDiskIDCheck) AppendFile(volume string, path string, buf []byte) (err error) { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.AppendFile(volume, path, buf) |
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} |
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func (p *posixDiskIDCheck) CreateFile(volume, path string, size int64, reader io.Reader) error { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.CreateFile(volume, path, size, reader) |
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} |
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func (p *posixDiskIDCheck) ReadFileStream(volume, path string, offset, length int64) (io.ReadCloser, error) { |
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if p.isDiskStale() { |
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return nil, errDiskNotFound |
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} |
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return p.storage.ReadFileStream(volume, path, offset, length) |
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} |
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func (p *posixDiskIDCheck) RenameFile(srcVolume, srcPath, dstVolume, dstPath string) error { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.RenameFile(srcVolume, srcPath, dstVolume, dstPath) |
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} |
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func (p *posixDiskIDCheck) StatFile(volume string, path string) (file FileInfo, err error) { |
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if p.isDiskStale() { |
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return file, errDiskNotFound |
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} |
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return p.storage.StatFile(volume, path) |
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} |
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func (p *posixDiskIDCheck) DeleteFile(volume string, path string) (err error) { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.DeleteFile(volume, path) |
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} |
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func (p *posixDiskIDCheck) DeleteFileBulk(volume string, paths []string) (errs []error, err error) { |
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if p.isDiskStale() { |
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return nil, errDiskNotFound |
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} |
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return p.storage.DeleteFileBulk(volume, paths) |
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} |
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func (p *posixDiskIDCheck) VerifyFile(volume, path string, size int64, algo BitrotAlgorithm, sum []byte, shardSize int64) error { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.VerifyFile(volume, path, size, algo, sum, shardSize) |
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} |
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func (p *posixDiskIDCheck) WriteAll(volume string, path string, reader io.Reader) (err error) { |
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if p.isDiskStale() { |
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return errDiskNotFound |
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} |
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return p.storage.WriteAll(volume, path, reader) |
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} |
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func (p *posixDiskIDCheck) ReadAll(volume string, path string) (buf []byte, err error) { |
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if p.isDiskStale() { |
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return nil, errDiskNotFound |
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} |
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return p.storage.ReadAll(volume, path) |
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} |
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