This sounds more like a support request than a bug report. Looks like your hard drive is closed to death :-(. Try support and if you found evidence of a bug come here with more informations. Oh, and try to unmount your partition (or run a live CD if it is on /) and run xfs_repair on it.
** Changed in: Ubuntu
Status: Unconfirmed => Rejected
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xfs Problem
https://launchpad.net/bugs/75319
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