What is /.journal?

[A.Fadyushin at it-centre.ru]

The /.journal file is created when the _existing_ EXT2 filesystem is
converted to EXT3 filesystem. That file contains the filesystem journal
used by EXT3. The file is only created during the conversion EXT2->EXT3
because it is impossible to create separate region on the existing EXT2
filesystem for the journal - therefore, the journal is placed in the
file /.journal (which is similar to regular files but is unremovable
under EXT3). When the EXT3 filesystem is created anew, the journal is
placed on disk separately from the space used for files' data, so there
is no need to reserve that space via special file entry.

Alexey Fadyushin
Brainbench MVP for Linux.
http://www.brainbench.com

> -----Original Message-----
> From: redhat-install-list-bounces at redhat.com
[mailto:redhat-install-list-
> bounces at redhat.com] On Behalf Of karlp at ourldsfamily.com
> Sent: Saturday, December 24, 2005 11:26 PM
> To: redhat-install-list at redhat.com
> Subject: What is /.journal?
> 
> It's a fairly Large file created when I upgraded to RH v8.0 from 7.0
in
> the root directory.
> 
> I don't see anything attached to it with fuser, but it is also
> un-removable...
> 
> Oh, and to Rick et al. Merry Christmas and thanks for being there when
I
> need help.
> 
> --
> karl
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>   _/ _/       _/      _/           ......................
>  _/   _/ arl _/_/_/  _/ earson    KarlP at ourldsfamily.com
> ---
> Senior Consulting Sys/DB Analyst
> http://consulting.ourldsfamily.com
> ---
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