Re: Linux Buffer Cache Does Not Support Mirroring

Andrea Arcangeli (andrea@suse.de)
Mon, 1 Nov 1999 18:35:36 +0100 (CET)


On Mon, 1 Nov 1999, Gerard Roudier wrote:

>I can understand that (1) perhaps allows to implement some features not
>possible with the layering used in Linux, at the price of increasing FS
>complexity probably.

Agreed. This because at the blockdevice layer you lost all the semantics
of the data and so at the ll_rw_block layer you can't implement any clever
algorithm in order to relocate the data on optimal physical locations.

Andrea

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