title: Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device" UserInfo={_kCFStreamErrorCodeKey=28, _kCFStreamErrorDomainKey=1}
body: <p>We use SDWebImage download remote image from network. The SDWebImage use NSURLSession download image.</p>
  
  <p>But we got strange error log that somebody cannot show image because got error <code>Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device"</code>
  This error happens rarely and cannot reproduce.   </p>
  
  <p>And we collect disk usage info and make create file test. We cannot find abnormal phenomena.  </p>
  
  <p>When the user met the problem reopen our app again and image can show again.</p>
  
  <p>This is very strange, anyone met the same problem? I can sure this is not SDWebImage issue, seems like system issue.</p>