This has been evaluated by the Foundations team and we do not intend to
diverge from upstream's defaults for 18.04. The incompatibility between
LTSes is not ideal, but is secondary to being able to improve the
filesystem defaults across LTS releases.
** Changed in: e2fsprogs (Ubuntu)
Status: Triaged => Won't Fix
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https://bugs.launchpad.net/bugs/1601997
Title:
Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is
incompatible with older (LTS) e2fsprogs
Status in e2fsprogs package in Ubuntu:
Won't Fix
Bug description:
Ubuntu 16.10 installer sets metadata_csum option on ext4 partition
which is incompatible with other LTS Ubuntu versions (12.04 LTS, 14.04
LTS, 16.04 LTS).
Steps to reproduce:
1. Download Ubuntu 16.10 installation media.
2. Install Ubuntu.
3. Try to do fsck -fy /dev/sdX1 from other supported Ubuntu distro.
Expected results:
User can check and fix errors on ext4 filesystem, created on Ubuntu 16.10.
Actual results:
User can not check and fix errors on ext4 filesystem because of lack of
'metadata_csum' option in previous LTS Ubuntu versions.
The only one working solution was to scan from 16.10 live install media.
Note:
it is known, that Dan Watkins disabled metadata_csum when creating ext4
filesystems ( see
http://bazaar.launchpad.net/~daniel-thewatkins/maas-images/fix-yakkety-builds/revision/305
). It is good solution.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: e2fsprogs 1.43.1-1
ProcVersionSignature: Ubuntu 4.4.0-30.49-generic 4.4.13
Uname: Linux 4.4.0-30-generic i686
ApportVersion: 2.20.2-0ubuntu1
Architecture: i386
CurrentDesktop: Unity
Date: Mon Jul 11 23:42:49 2016
SourcePackage: e2fsprogs
UpgradeStatus: No upgrade log present (probably fresh install)
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