Recommended Journal Size for Small FS?

Recommended Journal Size for Small FS?

[Jared Warren]

(Please excuse me if this has already been answered, I couldn't find anything 
pertinent in a brief archive search.)

I would like to use ReiserFS on my / filesystem, which includes bin, etc, lib, 
sbin, and root. Right now the files on that partition only take up 40 MB, so 
it seems like a 32 MB journal is overkill. Some comments I've read recommend 
using ext3 on small file systems because supposedly the journal is 
proportional (I have been unable to find out what proportion), however I 
trust I need not defend a preference for ReiserFS on this list. Can someone 
recommend a minimum journal size for, say, an 80 MB filesystem with 
infrequent and small writes?

Also, I'd like to confirm that 2.6.x kernels should be able to mount a fs with 
a resized journal as easily as one with the default size?
 
~ Jared Warren <warren@cs.queensu.ca>
Computing Science, Queen's University

Re: Recommended Journal Size for Small FS?

[Mike Fedyk]

Jared Warren wrote:
> (Please excuse me if this has already been answered, I couldn't find anything 
> pertinent in a brief archive search.)
> 
> I would like to use ReiserFS on my / filesystem, which includes bin, etc, lib, 
> sbin, and root. Right now the files on that partition only take up 40 MB, so 
> it seems like a 32 MB journal is overkill. Some comments I've read recommend 
> using ext3 on small file systems because supposedly the journal is 
> proportional (I have been unable to find out what proportion), however I 

It should be less than 5MB (I think ext3's mkfs will scale down to 1 or 
2MB depending on size).