There's a ton of similar errors (https://bugs.launchpad.net/bugs/+bugs?field.searchtext=unable+to+make+backup+link), I'll duplicate them together and assign to dpkg for now. This could also be a kernel issue, see bug 1498162, although that particular issue was for a different case.
** Package changed: glibmm2.4 (Ubuntu) => dpkg (Ubuntu) ** Summary changed: - package libglibmm-2.4-1c2a 2.24.0-0ubuntu1 failed to install/upgrade: ErrorMessage: unable to make backup link of `./usr/share/doc/libglibmm-2.4-1c2a/README' before installing new version: Input/output error + various packages failed to install/upgrade: ErrorMessage: unable to make backup link of <some file> before installing new version: Input/output error -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/559127 Title: various packages failed to install/upgrade: ErrorMessage: unable to make backup link of <some file> before installing new version: Input/output error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/559127/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
