[dm-devel] Device Mapper as a cache for SAN?

Artur Bergman sky at nanisky.com
Mon Apr 10 22:22:28 UTC 2006


On 10 Apr 2006, at 12:46, Eric Van Hensbergen wrote:

>  The various cluster file systems
> may provide something more akin to this, but again, this doesn't
> really cover SAN technologies -- not in any sort of a generic way.
> Let me know if I'm missing something.

I think everyone asking is missing something.

kernels cache, applications that use raw disk cache, SAN devices  
cache, I fail to see what you really are proposing and therefore I  
fail to see what value you are proposing?

Caching a SAN to local disk? usually my SANs are quite a bit faster  
than local disk, caching to memory? what does that buy you that the  
kernel/application caching gets you?

Artur
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