Roman Mamedov posted on Mon, 17 Apr 2017 23:24:19 +0500 as excerpted: > Days are long gone since the end user had to ever think about device > lifetimes with SSDs. Refer to endurance studies such as > http://techreport.com/review/27909/the-ssd-endurance-experiment-theyre- all-dead > http://ssdendurancetest.com/ > https://3dnews.ru/938764/ > It has been demonstrated that all SSDs on the market tend to overshoot > even their rated TBW by several times, as a result it will take any user > literally dozens of years to wear out the flash no matter which > filesystem or what settings used Without reading the links... Are you /sure/ it's /all/ ssds currently on the market? Or are you thinking narrowly, those actually sold as ssds? Because all I've read (and I admit I may not actually be current, but...) on for instance sd cards, certainly ssds by definition, says they're still very write-cycle sensitive -- very simple FTL with little FTL wear- leveling. And AFAIK, USB thumb drives tend to be in the middle, moderately complex FTL with some, somewhat simplistic, wear-leveling. While the stuff actually marketed as SSDs, generally SATA or direct PCIE/ NVME connected, may indeed match your argument, no real end-user concern necessary any more as the FTLs are advanced enough that user or filesystem level write-cycle concerns simply aren't necessary these days. So does that claim that write-cycle concerns simply don't apply to modern ssds, also apply to common thumb drives and sd cards? Because these are certainly ssds both technically and by btrfs standards. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
