OSX Mavericks Possible Data Corruption Bug

Over the past two weeks there has been much upheaval in my life. Involved with this upheaval has been one of the most unwanted activities any IT professional has to do as part of their professional lives and that is bowing out gracefully. Sometimes IT professionals can actually achieve this state of grace, however most of the time fear overwhelms grace and trust. The morality I will leave to another blog post to come.

In rescuing data from a computing device a few days ago I discovered that the act of using a USB external hard drive with a Macintosh MacBook Pro with OSX Mavericks may have a nasty bug lying in tall grass. I had about 212GB of data that needed to be moved to another medium, and I elected to use a Western Digital external hard drive using USB 2. This drive had never before shown any signs of failure however after copying the data onto the drive using OSX Mavericks, the HFS filesystem on the drive suffered some mystery damage that I’ve never witnessed before. Thankfully the volume was mountable and I could rescue the data from the errant drive and copy it to another drive and effectively save my bacon. The error concerned a failure in the node structure when fsck was asked to diagnose the HFS Journaled filesystem present on the suspect drive. Now I can’t say for sure that OSX Mavericks caused this failure, but the proximity of it and an earlier email from Western Digital stating that there might be drive problems with OSX Mavericks also rang in my mind as a potential problem that points to this particular possible bug. Now the Western Digital warning was just for their drives that used the extended WD software to mount the drives to the Macintosh file system, I suspect that the bug is indeed deeper than even WD knows, or Apple perhaps.

If you are using WD, or perhaps any other external hard drive or memory-stick technology with OSX Mavericks the smart money is on frequent backup and sync to multiple locations. Really smart administrators will backup over the network to some other computing platform with it’s own independent drive technology. If you are using Macintosh OSX Mavericks, I would say it’s better to be safe than sorry and for the love of all that is cute and fuzzy, make your backups!

PAD 1/30/13 – Burning Down The House

“Your home is on fire. Grab five items (assume all people and animals are safe). What did you grab?”

I would rescue these items from my house:

  • Important Documents Folder
  • Backpack of Data
  • Messenger Bag
  • Antiques
  • Family Photos

These are things that I cannot easily replace. Everything else would be a matter of homeowners insurance. While much of the things I would rescue, such as the Important Documents Folder may not be exactly irreplaceable it does hold some things that I have an emotional connection to, the real physical things that I have earned – like my High School Diploma and my Bachelors Diploma. I am sure I could get reproductions of both, but these are originals and they are important to me. Antiques may surprise people, that I have some which I do, and that they are on my list. Some things, even if they aren’t worth very much have an irrational value because they are physical threads leading backwards through time to people I never knew but revere because without them I would not exist. I list them as “antiques” because I do not want to cover what they are. They are important to me, and that’s good enough for me. I’ve taken the concepts of readiness that I did for my professional life at work and extended them to my home. There are some habits that I have like placing certain things in bags, like a backpack where all the hard drives are kept and my trusty Messenger Bag which stores the lightweight but vitally important objects in my life, like my Nook HD, my iPad, my Laptop, that sort of thing. Photos of family would be rescued as well. Again, almost everything can be reproduced but I am guilty of ascribing extended properties to physical objects in an irrational capacity. Photos are just chemical marks on paper, but these are of my loved ones, my family, and so they are more than the sum of their chemical marks, in many ways they carry a piece of that family member with the photograph. Looking at my family in photos brings their memories back and help me return a part of their existence to my life through the blessings of memory. Very much like how the Prophets discussed the flow of time to Benjamin Sisko on Deep Space Nine – “You exist here. Why?” and I like the idea of memory in this way, that the past, present, and future all exist at the same time. Our consciousness and bodies move forward in time, but parts of us exist in other times and we can access those by the act of remembering. That the sheer act of remembering in a way helps us to return to when our loved ones existed with us and so, they can again, in a fashion.

If people are safe, and my pets are safe, and these objects are safe then the rest can burn. I think that over time this list will get smaller as some of these objects are stored in places where disaster cannot strike like safety deposit boxes and the like. More and more of life, I think, will end up being digital and stored on the cloud – so much of the material that is digital becomes proofed against loss, against burning, against flooding, against everything.