On 12/13/2010 01:20 PM, Tomasz Torcz wrote:
On Mon, Dec 13, 2010 at 05:17:51PM +0000, Paddy Steed wrote:
So, no-one has any idea's on how to implement the cache. Would making it
all swap work, does to OS cache files in swap?
Quite the opposite. Too many people have ideas for SSD-as-cache in Linux,
in non particular order:
— bcache
— cleancache
— btrfs temperature tracking
— dm-hstore
— dm-cache / flashcache
Patches are in various states of implementation, some with explicit btrfs
support. There's no clear winner at this time, but some of above solutions
are shipped in distro kernels.
People are working on quite a few ways that btrfs can leverage SSD devices. One
technique would be to use the SSD as a block level cache, another would be to
steer all metadata to the SSD (leaving your bulk data on normal drives).
ric
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