[ubuntu-uk] EXT3 or EXT4

[Tony Travis]

On 16/07/10 21:18, Rob Beard wrote:
> [...]
> Is the Extents where it allocates space for big files?  (I found
> something about this when googling about EXT4).
>
> I wonder too if it's possible to go back to EXT3 from EXT4 like it is
> possible to go back from EXT3 to EXT2 (how I understand it, EXT3 is EXT2
> with journalling).

Hello, Rob.

Tyler has already answered your question about extents, and I also think 
you would be best to avoid converting your ext3 filesystems unless you 
have no alternative.

I was faced with a similar situation with our ext3 filesystems, but I 
decided to backup, reformat as ext4 and restore. Although this was more 
work than converting ext3, I think it is worth it in the longer term.

HTH,

   Tony.
-- 
Dr. A.J.Travis, University of Aberdeen, Rowett Institute of Nutrition
and Health, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, Scotland, UK
tel +44(0)1224 712751, fax +44(0)1224 716687, http://www.rowett.ac.uk
mailto:a.travis at abdn.ac.uk, http://bioinformatics.rri.sari.ac.uk/~ajt