Description of the Journaling topology

Rahul Siddharthan rsidd at
Wed Dec 29 09:20:07 PST 2004

Gary Thorpe wrote:
>I think referring to Journaling is a bit misleading as these features
>will not help the traditional case of recovery after power loss on a
>file system (all buffered data would be lost as it is in memory).

I'm no expert but I thought the traditional case was fast recovery to
a consistent filesystem state (avoiding a long fsck), not recovery of
buffered data or fast writing of buffered data to disk.  I'm pretty
sure ext3, for example, with its default async mount, is very
susceptible to losing data.  ufs+softupdates most certainly can lose a
lot of buffered data.


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