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[Oleksij Rempel <1365874@xxxxxxxxxxxxxxxxxx>]

I would love to help with testing of metadata_csum as match as possible. Espesially becouse i waiting for this option so long time. But there are two problem which make it hard to do:
- no e2fsprogs 1.43 package even on ppa.
- all systems are still created without 64bit enabled.

Before testing we need: 
- add 64bit option to mke2fs.conf by default.
- make 1.42 not complain if metadata_csum is enabled.
- provide ppa package with big fat warning: "don't cry if you test it"

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

Title:
  Ubuntu 14.04 does not support ext4 metadata checksumming

Status in e2fsprogs package in Ubuntu:
  Confirmed

Bug description:
  In the Trusty release notes "Metadata checksumming" is listed as one
  of the tech highlights of kernel 3.13.

  https://wiki.ubuntu.com/TrustyTahr/ReleaseNotes#New_features_in_14.04_LTS

  However, the userland tools do not support this kernel feature. To the
  best of my knowledge this will be supported in 1.43, and won't be
  backported to 1.42.

  IMHO this is very misleading. It's like a car salesperson sold you a
  sports car with an V8 engine. After you drove it home, you opened the
  hood and realized only 6 cylinders are working because 2 of the spark
  plugs were not included, and you have to buy aftermarket ones.

  <rant>BTW, I've been following the development of e2fsprogs for over a
  year. 1.43  release has been in limbo for God knows how long :(
  </rant>

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