On Sat, 2018-02-17 at 06:30 +0100, Mike Galbraith wrote: > On Wed, 2018-02-14 at 08:44 -0700, Jens Axboe wrote: > > > > Mike, when you see a hang like that, would it be possible for you to > > dump the contents of /sys/kernel/debug/block/<dev in question/* for us > > to inspect? That will tell us a lot about the internal state at that > > time. > > Finally. 4.15.4 stalled this morning while building other updated > trees. > > #!/bin/sh > > for i in `find /sys/kernel/debug/block/sd[bd] -type f` > do > echo $i: > cat $i > echo > done sdd was idle.. should have chopped that off.