Hello, I've recently learnt that SSDs (all ?) need to be over provisioned. My SSD is a kingstom SSDNOW MS200 (controller is SandForce-SF2241).
First I'd like to know if over-provisioning is still needed when bcache is used ? I'm assuming that I need over-provisioning. Currently my whole SSD is used a cache device and my backing device is a 900Mo partition with ext4 and no over-provisioning was foreseen. What's the best practice to make my SSD over-provisioned ? - Should I create 2 partitions with one left emtpy and whose size is roughly 7% of the device size ? - Should I create a "Host Protected Area" by using hdparm ? And finally, can I create the over-provisioning without lost the content of my backing device ? Thanks for your help. -- Francis -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
