On Dec 14, 2013, at 1:30 PM, Hans-Kristian Bakke <[email protected]> wrote: > > During high disk loads, like backups combinded with lot of writers, > rsync at high speed locally or btrfs defrag I always get these > messages, and everything grinds to a halt on the btrfs filesystem: > > [ 3123.062229] INFO: task rtorrent:8431 blocked for more than 120 seconds > [ 3123.062251] Not tainted 3.12.4 #1
On blocks, if this is an unknown problem, often devs will want to see dmesg after you've issued dmesg -n7 and sysrq+w. More on sysrq triggering is here: https://www.kernel.org/doc/Documentation/sysrq.txt > The filesystem have used about 26TB of the available 29TB (real > available data), and some of the files on it are heavily fragmented > (around 100 000 extents at about 25GB) Please include results from btrfs fi show, and btrfs fi df <mp>. Chris Murphy-- 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
