Am 13.07.2015 um 13:20 schrieb Austin S Hemmelgarn: > On 2015-07-11 02:46, Stefan Priebe wrote: >> Hi, >> >> while using a 40TB btrfs partition for VM backups. I see a massive >> slowdown after around one week. >> >> The backup task takes usally 2-3 hours. After one week it takes 20 >> hours. If i umount and remount the btrfs volume it takes 2-3 hours again. >> >> Kernel 4.1.1 >> > I've been seeing similar (although much less drastic) slowdowns over > time myself pretty much since I started using BTRFS (IIRC, sometime > around 3.16). If you're not constantly writing to that backup volume, > you might want to consider setting up automounting for it. >
Yes but that's awful. it's a bug. It would be very nice if someone involved in the btrfs development can comment on that one. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
