On Sat, Dec 08, 2018 at 08:50:32AM +0800, Qu Wenruo wrote: > > I've adapted a stress tests that unpacks a large tarball, snaphosts > > every 20 seconds, deletes a random snapshot every 50 seconds, deletes > > file from the original subvolume, now enhanced with qgroups just for the > > new snapshots inherigin the toplevel subvolume. Lockup. > > > > It gets stuck in a snapshot call with the follwin stacktrace > > > > [<0>] btrfs_tree_read_lock+0xf3/0x150 [btrfs] > > [<0>] btrfs_qgroup_trace_subtree+0x280/0x7b0 [btrfs] > > This looks like the original subtree tracing has something wrong. Yes, I ran the test on current master and it locked up too, so it's not due to your patchset. > Thanks for the report, I'll investigate it. Thanks.
