Hi all, This patchset enables sysadmins to upgrade an existing filesystem to use large extent counts. v3: don't allow upgrades for filesystems that are more than 90% full because we just dont want to go there v2: pull in patches from chandan/dave If you're going to start using this mess, you probably ought to just pull from my git trees, which are linked below. This is an extraordinary way to destroy everything. Enjoy! Comments and questions are, as always, welcome. --D xfsprogs git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfsprogs-dev.git/log/?h=nrext64-upgrade --- include/libxfs.h | 1 include/xfs_mount.h | 1 libxfs/init.c | 24 +++-- libxfs/libxfs_api_defs.h | 3 + man/man8/xfs_admin.8 | 7 + repair/globals.c | 1 repair/globals.h | 1 repair/phase2.c | 234 ++++++++++++++++++++++++++++++++++++++++++++-- repair/xfs_repair.c | 11 ++ 9 files changed, 266 insertions(+), 17 deletions(-)