Re: cow-links

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Sun Mar 05 2000 - 10:40:53 EST


> > FWIW I have been working on the design for such a filesystem (or
> > `filesystem block-allocation indirection layer') for a few months now.
>
> Well, I would have been surprised if nobody had been researching this kind
> of approach...

Its normally tied to an LVM. The idea being the FS says things like

Y='Give me 64K near handle X'

and its all handle/extent based. The disk layer can then use these hints and
its own data to rearrange and even to move stuff between disks.

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