I recently released e2fsprogs 1.44.0 (currently in Debian Unstable,
should hopefully hit Debian Testing in three more days) which turns on
Metadata Checksums for everyone.

https://packages.debian.org/sid/e2fsprogs

Pulling in 1.44.0 supports two new features, largedir and ea_inode,
(neither turned on by default yet, but the second in particular is very
useful for Samba servers since it was written specifically to
efficiently support Windows ACL's and Security ID's better than any
other file system by supporting xattr dedupe.)

http://e2fsprogs.sourceforge.net/e2fsprogs-release.html#1.44.0

In general e2fsprogs has a very conservative release process, and there
have been a *large* number of bug fixes since e2fsprogs 1.42.13.
(Including some that can cause horrible file system corruption and data
loss if you do off-line resize2fs operations (resizing the file system
while the file system is not mounted) under some circumstances.   So if
you are using distribution with that has e2fsprogs 1.42.13, on the
misguided assumption that staying on an ancient version of e2fsprogs is
"safer" --- that is simply not true.

One caveat: in 1.44.0 I started relying on dpkg build profiles in
debian/rules.   This means e2fsprogs 1.44.0 no longer builds out of the
box for Debian 7 (wheezy, aka Debian old-old-stable) and Ubuntu Trusty
(14.04 LTS) and older releases.  It should be possible to backport
e2fsprogs 1.44.0 to 14.04 LTS, but at the very least 14.04 LTS should go
to 1.43.9 to fix a huge number of bugs.   But for 16.04, e2fsprogs
1.44.0 should just drop right in.  And with 14.04 LTS and older,
e2fsprogs 1.43.9 should Just Work.

It wouldn't be that hard to make e2fsprogs 1.44.0 work on 14.04 LTS, but
it won't be turn-key.

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https://bugs.launchpad.net/bugs/1365874

Title:
  Ubuntu 12.04 LTS, 14.04 LTS, 16.04 LTS do not support ext4 metadata
  checksumming

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