This is an upstream problem with a fix released. Prior to kernel version 2.6.19 resierfs loaded all of the volume's bitmap at mount time. This causes a long mount time for very large reiserfs volumes. As of 2.6.19 it only loads the bitmap blocks on demand.
-- ReiserFS mount is dog-slow on Promise FastTrack 376 RAID https://launchpad.net/bugs/47010 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
