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sftp: fix directory creation races

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If mkdir fails then before this change it would have thrown an
error.

After this change, if the error indicated that the directory
already exists then the error is not returned to the user.

This fixes a race condition when two rclone threads are trying to
create the same directory.
This commit is contained in:
Lesmiscore 2022-09-15 00:45:35 +09:00 committed by GitHub
parent 6ce0168ba5
commit 67240bd541
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1 changed files with 4 additions and 0 deletions
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4
backend/sftp/sftp.go
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@ -1171,6 +1171,10 @@ func (f *Fs) mkdir(ctx context.Context, dirPath string) error {
err = c.sftpClient.Mkdir(dirPath) err = c.sftpClient.Mkdir(dirPath)
f.putSftpConnection(&c, err) f.putSftpConnection(&c, err)
if err != nil { if err != nil {
if os.IsExist(err) {
fs.Debugf(f, "directory %q exists after Mkdir is attempted", dirPath)
return nil
}
return fmt.Errorf("mkdir %q failed: %w", dirPath, err) return fmt.Errorf("mkdir %q failed: %w", dirPath, err)
} }
return nil return nil