linux-ext4 - [RFC PATCH v2 0/2] ext4, jbd2: journal cycled record transactions between each mounts

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Date:   Thu,  2 Feb 2023 22:22:22 +0800
From:   Zhang Yi <yi.zhang@...wei.com>
To:     linux-ext4@...r.kernel.org
Cc:     tytso@....edu, adilger.kernel@...ger.ca, jack@...e.cz,
        harshadshirwadkar@...il.com, yi.zhang@...wei.com,
        yi.zhang@...weicloud.com, yukuai3@...wei.com
Subject: [RFC PATCH v2 0/2] ext4, jbd2: journal cycled record transactions between each mounts

From: Zhang Yi <yi.zhang@...weicloud.com>

v1->v2:
 - Fix the format type warning.
 - Add more check of journal_cycle_record mount options in remount.

Hello, This patch set introduce a new mount option names
journal_cycle_record, it save journal head for a clean unmounted file
system, let ext4 continue/cycled record new journal transactions after
previous mount or recovered transactions for unclean file system. It
could give us more info when analysing a corrupted file system image
and locate kernel consistency bugs more conveniently.

This is just the kernel part and have already passed throuth xfstests in
auto mode (it depends on one prefix patch[1]). I will continue the
e2fsprogs' part if nobody strong dislike that. Any comments are welcome.

[1] https://lore.kernel.org/linux-ext4/20230130111138.76tp6pij3yhh4brh@quack3/T/#m96a1cffd567bdd844233b3115a6635391ed0b45b

Thanks,
Yi.

Zhang Yi (2):
  jbd2: cycled record log on clean journal logging area
  ext4: add journal cycled recording support

 fs/ext4/ext4.h       |  2 ++
 fs/ext4/super.c      | 18 ++++++++++++++++++
 fs/jbd2/journal.c    | 18 ++++++++++++++++--
 fs/jbd2/recovery.c   | 22 +++++++++++++++++-----
 include/linux/jbd2.h |  9 +++++++--
 5 files changed, 60 insertions(+), 9 deletions(-)

-- 
2.31.1