On Sat, Jan 30, 2016 at 7:50 AM, Patrik Lundquist <patrik.lundquist@xxxxxxxxx> wrote: > On 29 January 2016 at 13:14, Austin S. Hemmelgarn <ahferroin7@xxxxxxxxx> wrote: >> >> Last I checked, Seagate's 'NAS' drives and whatever they've re-branded their other enterprise line as, as well as WD's 'Red' drives support both SCT ERC and FUA, but I don't know about any other brands (most of the Hitachi, Toshiba, and Samsung drives I've seen do not support FUA). > > I don't know about WD Red Pro but my WD Reds don't support FUA. > > Can I list supported commands with something like hdparm? I'm curious > about a WD Re in a LSI RAID. Blast from the past. https://lwn.net/Articles/400541/ I kinda wonder where things are at with all of this now, especially since the VFS changes that have happened recently. There were also some Btrfs fsync patches a while back to improve performance. There are so many apps that are asking for fsync and fdatasync now, it seems almost overkill, and now there are optimizations to handle all of that (sometimes unnecessary) fsyncing. I also wonder about the differences between file systems in that respect and whether it is, or is possible, to better abstract such things from developers so they don't have to do file system specific stuff. -- Chris Murphy -- 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
