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Re: Kernel 2.4.3 & ext3 patchable?

On Jun 03, 2002  20:33 -0400, Mike Snitzer wrote:
> I am in a situation where I absolutely need to run a redhat 2.4.2-2 kernel
> because of other hardware/system requirements depending solely on 2.4.2-2.
> Am I completely out of luck for ext3 with 2.4.2-2?  Even if the core
> functionality of ext3 were available in an early beta; it would probably
> be extremely buggy, no?  I ultimately need the system to be as stable as
> 2.4.2 will allow.  Stability being a wishful requirement; is ext2 my best
> bet with 2.4.2-2? 
> All this said the underlying storage hardware being used is 7 raid0 arrays
> of 680GB each.  endless fsck'in fun.. is there any hope for ext3 under
> 2.4.2? 

Well, the majority of the code for ext3 would work on 2.4.2 just as well
as 2.4.current.  However, there is a subtle interplay between the VM and
the journaling layer, so it may take a while to get everything right.

You could go one of two ways - take the 2.4.early ext3 code and
incrementally apply only the ext3/jbd patches, testing incrementally
to make sure it builds/runs (UML would be very useful for that).
You could also just take the fs/{ext3,jbd} trees from 2.4.current
and see what is broken (might be OK if you follow kernel development

Cheers, Andreas
Andreas Dilger

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