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lib/fs: make sure the created directory remains visible in the fs in the event of power loss

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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/63
This commit is contained in:
Aliaksandr Valialkin 2019-06-11 23:03:14 +03:00
parent 0b7f751f60
commit 3fa4c28f6b
1 changed files with 14 additions and 3 deletions
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17
lib/fs/fs.go
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@ -124,7 +124,7 @@ func MkdirAllIfNotExist(path string) error {
if IsPathExist(path) {
return nil
}
return os.MkdirAll(path, 0755)
return mkdirSync(path)
}
// MkdirAllFailIfExist creates the given path dir if it isn't exist.
@ -134,7 +134,18 @@ func MkdirAllFailIfExist(path string) error {
if IsPathExist(path) {
return fmt.Errorf("the %q already exists", path)
}
return os.MkdirAll(path, 0755)
return mkdirSync(path)
}
func mkdirSync(path string) error {
if err := os.MkdirAll(path, 0755); err != nil {
return err
}
// Sync the parent directory, so the created directory becomes visible
// in the fs after power loss.
parentDirPath := filepath.Dir(path)
SyncPath(parentDirPath)
return nil
}
// RemoveDirContents removes all the contents of the given dir it it exists.
@ -255,7 +266,7 @@ func init() {
// HardLinkFiles makes hard links for all the files from srcDir in dstDir.
func HardLinkFiles(srcDir, dstDir string) error {
if err := os.MkdirAll(dstDir, 0755); err != nil {
if err := mkdirSync(dstDir); err != nil {
return fmt.Errorf("cannot create dstDir=%q: %s", dstDir, err)
}