There's a few topics out there on this subject but I can't get my head 
around any of them....

I have 3 x 2TB in software (mdadm) RAID5 (yeah, yeah I know) and a spare 
120G SSD to use as cache. Currently I use flashcache to back the entire md 
device but do not realize any benefit in doing so (nor do I see any 
activity on the cache device when performing I/O against the array).

Where is my approach flawed? I've also tried fronting the qs vdisks 
themselves with the SSD device to no avail either.

Any help would be appreciated.


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