On Mon, Nov 21, 2016 at 05:13:41AM +0800, Coly Li wrote: > Hi Marc, > > Could you please give me an exact procedure that how the environment is > configured, and how the commands are executed ? I will try them on my > machine to reproduce it. Well, let's see: source and destination look like this: mdadm raid 5 \ ssd bcache ---- dmcrypt - btrfs Then I do a 10TB btrfs send from dev1 to dev2 The exact commands, some I typed a long time ago. This is live data, not a test environment I just spin up for testing. That said, is that what you were asking about? But as I said, right now I removed the caching device from dev2, so bcache is still there but doing nothing, and I'm still getting kernel OOM problems as per http://pastebin.com/2LUicF3k I'm currently testing 4.19rc5 to see if the VM changes help my case. Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ | PGP 1024R/763BE901 -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
