Debian fixed this by adding librt to libc6-udeb (although there was some debate about whether that was the right approach); I'm going to do the same.
** Changed in: debian-installer (Ubuntu) Sourcepackagename: debian-installer => glibc Assignee: (unassigned) => Colin Watson -- installer unable to format xfs https://launchpad.net/bugs/63234 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs