Warning of possible corruption on /cs/taatto file system in Ukko cluster

17.08.2012 - 13:38 - 25.08.2012 - 16:00

 We have received and confirmed two reports of corrupted files on /cs/taatto file system (available only on the Ukko cluster). The corruption has happened somewhere between April 2012 and now.  We don't know why the corruption has happened (we are of course trying to figure this out) and when exactly did it happen (we are trying to figure out this too).

We have done a file system check on the current file system and no errors were reported, so the corruption is probably not constantly ongoing. However, if you have had files on /cs/taatto filesystem since April, you should be aware that there is a possibility of corruption. Please check your files, if you have the means to do so. If you find corrupted files, please report about it to itsupport@cs.helsinki.fi. The original versions of the corrupted files can still be returned from tape, but we currently have no means of recognising the corrupted files without help.

UPDATE 17.8: the known corrupted files were still OK as of 28.7. So the corruption has happened at some time between 28.7 and 17.8. Remember that the files were last modified before 28.7, so even if we now know when the corruption happened, we do not know which files where affected. 


17.08.2012 - 15:50 Jani Jaakkola
17.08.2012 - 13:50 Jani Jaakkola