I am playing around with lvmcache on a little 32gb SSD in a laptop. My hope was that by caching writes the internal hdd wouldn't need to spin up all of the time.
Additionally I use btrfs to have the nice lzo compression available.
I just now remembered is that btrfs is in fact a copy-on-write filesystem and this will probably reduce write-caching efficiency to nil as data is almost never written in the same location.
Is this true? Or do I miss something there?
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