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Re: [GIT PULL] Ext3 removal, quota & udf fixes

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On Aug 31, 2015, at 3:37 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote:
> 
> On Sun, Aug 30, 2015 at 11:19 PM, Jan Kara <jack@suse.cz> wrote:
>> 
>> The biggest change in the pull is the removal of ext3 filesystem driver
>> (~28k lines removed).
> 
> I really am not ready to just remove ext3 without a lot of good
> arguments. There might well be people who this use ext3 as ext3, and
> don't want to update. I want more a rationale for removal than "ext4
> can read old ext3 filesystems".

The ext4 code can read and write ext3 filesystems without any
compatibility issues (i.e. none of the ext4-specific features are
enabled automatically) and have been doing so for all RHEL and SLES
users for the past several years via the CONFIG_EXT4_USE_FOR_EXT23
option (added in commit 24b58424 in 2009).  It looks like the same
for Ubuntu since early 2014 also.

The ext4-specific features either need to be enabled specifically
via tune2fs (if possible) or at mkfs time.

Cheers, Andreas





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[GIT PULL] Ext3 removal, quota & udf fixes Jan Kara <jack@suse.cz> - 2015-08-31 08:20 +0200
  Re: [GIT PULL] Ext3 removal, quota & udf fixes Linus Torvalds <torvalds@linux-foundation.org> - 2015-08-31 23:40 +0200
    Re: [GIT PULL] Ext3 removal, quota & udf fixes Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-01 00:40 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Raymond Jennings <shentino@gmail.com> - 2015-09-01 01:10 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Theodore Ts'o <tytso@mit.edu> - 2015-09-01 05:00 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Eric Sandeen <sandeen@redhat.com> - 2015-09-01 15:00 +0200
        Re: [GIT PULL] Ext3 removal, quota & udf fixes Jeff Mahoney <jeffm@suse.com> - 2015-09-01 17:20 +0200
    Re: [GIT PULL] Ext3 removal, quota & udf fixes Raymond Jennings <shentino@gmail.com> - 2015-09-01 00:40 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Raymond Jennings <shentino@gmail.com> - 2015-09-01 02:30 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Christoph Hellwig <hch@infradead.org> - 2015-09-01 08:50 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Albino B Neto <bino@riseup.net> - 2015-09-01 12:30 +0200
        Re: [GIT PULL] Ext3 removal, quota & udf fixes Austin S Hemmelgarn <ahferroin7@gmail.com> - 2015-09-01 21:50 +0200
          Re: [GIT PULL] Ext3 removal, quota & udf fixes Albino B Neto <bino@riseup.net> - 2015-09-02 05:40 +0200
            Re: [GIT PULL] Ext3 removal, quota & udf fixes Raymond Jennings <shentino@gmail.com> - 2015-09-02 07:50 +0200
              Re: [GIT PULL] Ext3 removal, quota & udf fixes Austin S Hemmelgarn <ahferroin7@gmail.com> - 2015-09-02 15:30 +0200
          Re: [GIT PULL] Ext3 removal, quota & udf fixes Chuck Ebbert <cebbert.lkml@gmail.com> - 2015-09-02 14:00 +0200
            Re: [GIT PULL] Ext3 removal, quota & udf fixes Austin S Hemmelgarn <ahferroin7@gmail.com> - 2015-09-02 15:40 +0200
          Re: [GIT PULL] Ext3 removal, quota & udf fixes Theodore Ts'o <tytso@mit.edu> - 2015-09-02 18:30 +0200
            Re: [GIT PULL] Ext3 removal, quota & udf fixes Austin S Hemmelgarn <ahferroin7@gmail.com> - 2015-09-02 19:00 +0200
    Re: [GIT PULL] Ext3 removal, quota & udf fixes Andreas Dilger <adilger@dilger.ca> - 2015-09-01 02:30 +0200
    Re: [GIT PULL] Ext3 removal, quota & udf fixes Mel Gorman <mgorman@techsingularity.net> - 2015-09-02 19:00 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes "Darrick J. Wong" <darrick.wong@oracle.com> - 2015-09-02 20:50 +0200
        Re: [GIT PULL] Ext3 removal, quota & udf fixes Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-03 01:50 +0200
          Re: [GIT PULL] Ext3 removal, quota & udf fixes Albino B Neto <bino@riseup.net> - 2015-09-03 13:40 +0200
            Re: [GIT PULL] Ext3 removal, quota & udf fixes "Darrick J. Wong" <darrick.wong@oracle.com> - 2015-09-03 23:50 +0200
  Re: [GIT PULL] Ext3 removal, quota & udf fixes Richard Yao <ryao@gentoo.org> - 2015-09-03 20:30 +0200
    Re: [GIT PULL] Ext3 removal, quota & udf fixes "Darrick J. Wong" <darrick.wong@oracle.com> - 2015-09-03 20:40 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Richard Yao <ryao@gentoo.org> - 2015-09-03 21:20 +0200
        Re: [GIT PULL] Ext3 removal, quota & udf fixes "Darrick J. Wong" <darrick.wong@oracle.com> - 2015-09-03 21:40 +0200
          Re: [GIT PULL] Ext3 removal, quota & udf fixes Richard Yao <ryao@gentoo.org> - 2015-09-04 00:30 +0200
    Re: [GIT PULL] Ext3 removal, quota & udf fixes Eric Sandeen <sandeen@redhat.com> - 2015-09-03 20:40 +0200
      Re: [GIT PULL] Ext3 removal, quota & udf fixes Richard Yao <ryao@gentoo.org> - 2015-09-03 21:20 +0200

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