After further investigation, it seems that a fix may already exist in v3.2.29:
commit 4ac2515cf5201e7762c16303d860b6ec0e02aecb Author: Theodore Ts'o <ty...@mit.edu> Date: Thu Aug 16 11:59:04 2012 -0400 ext4: fix long mount times on very big file systems Can folks affected by this bug test the v3.2.29[0] kernel? If that kernel fixes the bug, Precise will automatically pickup the fix when the updates for 3.2.29 are pulled in. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.29-precise/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1054605 Title: Mount very slow for 22TB ext4 filesystem on Ubuntu Server 12.04.1 running kernel 3.2.0-30-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1054605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs