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Re: Xfs_repair and journalling -- EXT4 journal replay discussion

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: Xfs_repair and journalling -- EXT4 journal replay discussion
From: Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
Date: Sat, 30 Mar 2013 13:52:17 -0500
Cc: Subranshu Patel <spatel.ml@xxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <5157237A.40006@xxxxxxxxxxx>
References: <CAEUQceh-Xcabr0KErxF6EAdafDDP1PY_AeHwgYB82QeUdyGp-g@xxxxxxxxxxxxxx> <5147E360.10605@xxxxxxxxxxx> <5148037B.5010706@xxxxxxxxxxxxxxxxx> (sfid-20130319_091205_759083_BA6F1AD2) <201303190924.29362.Martin@xxxxxxxxxxxx> <51483A7D.9050202@xxxxxxxxxxxxxxxxx> <5156DF72.1090703@xxxxxxxxxxxxxxxxx> <5157237A.40006@xxxxxxxxxxx>
Reply-to: stan@xxxxxxxxxxxxxxxxx
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On 3/30/2013 12:40 PM, Eric Sandeen wrote:
> On 3/30/13 7:49 AM, Stan Hoeppner wrote:

>> Ok, so here's the skinny on the source of our confusion WRT how/when
>> EXT4 replays journals, and it's rather interesting.  Ted Ts'o explained
>> the following.
> 
> Where was this, out of curiosity?

Private email exchange with Ted.  I thought it was best from an
etiquette standpoint not to wholesale paste his two private emails to
the XFS list, but to summarize.  Maybe it would be ok if I put it on my
web server for a couple of days then remove it.

http://www.hardwarefreak.com/ext4-journaling.txt

-- 
Stan

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