[MLUG] A mini blog about file systems.

[David Filion]

Stefan Monnier wrote:
>> It could very well be that the footprint for ext4 is about the same as
>> ext3.  However, always in the system is ext2, required for the
>> boot partition.
>>     
>
> The boot partition can be (and usually is, AFAIK) ext3.  But it can also
> be any number of things, e.g. ext4, vfat, and many more.  Depending on
> your bootloader, there might be some additional constraints, of course.
>
> In any case, without actual (even vague) data about RAM use of various
> filesystems, it's hard to recommend one filesystem over another on the
> basis of trying to "have the maximum amount of free memory available for
> my application".
>
>   
>> So, ext3 just adds some journalling.  As far as I know, ext4 is
>> incompatible with ext[23].
>>     
>
> Actually, IIUC ext4 is upward compatible.  Not that it matters, tho.
>
>
>         Stefan
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With the latest bug reports, I'd hold off on ext4 for a while.