On Mon, Jun 19, 2017 at 01:59:34PM -0400, Tejun Heo wrote: > Hello, > > On Sun, Jun 18, 2017 at 03:43:36PM +0200, Christoph Hellwig wrote: > > On Sun, Jun 18, 2017 at 06:20:20AM -0400, Tejun Heo wrote: > > > If you "cd /sys/kernel/debug/tracing; cd -" before doing the find, > > > does it succeed the first time? It could be that the on-demand > > > mounting of tracefs is giving incoherent results across the mounting > > > and confusing find. > > > > Yes, that works fine: > > > > root@testvm:~# cd /sys/kernel/debug/tracing; cd - > > /root > > root@testvm:~# find /sys -name uuid > > /sys/devices/virtual/nvme-fabrics/ctl/nvme3/nvme3n1/uuid > > /sys/devices/virtual/nvme-fabrics/ctl/nvme2/nvme2n1/uuid > > So, looks like this is the debugfs automount mechanism changing nlinks > across automounts and confusing find in the process. Greg? That's odd, is find racing with itself here? I don't really know how to do anything about this in sysfs, as this should happen for any other filesystem, right? thanks, greg k-h
