Messages in this thread | | | Subject | Re: [RFC] kernel facilities for cache prefetching | From | Arjan van de Ven <> | Date | Thu, 04 May 2006 09:33:24 +0200 |
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> Ascending block numbers on disk can be read very fast, as the disk needs no or > less seeking. That's even true for stripes and mirrors. (I grant you that > there are complicated setups out there, but these could be handled similar.) >
btw this all really spells out that you may want to do this as a device mapper thing; eg have a device mapper module that can do "lookaside" to a different order/mirror block whatever. The filesystem just doesn't want to know; do it at the DM level ;) That also solves the entire caching layering problem etc ;)
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