On Fri, Jun 28, 2019 at 09:42:08PM +0200, Thomas Klausner wrote: > To reduce the bug surface, I've disconnected the wd0 device which was > attached at ahcisata. This also removed the swap device, but the > machine is far from needing to swap. > > After ~5 hours the machine is currently hanging in tstile again. I > noticed the bulk build wasn't progressing (in a perl module) and > stopped it, then tried removing the work directory to get pbulk to > break off, that hung the rm process.
I notice you also have a perl process in biowait, this is probably the one that is really hung. I've seen this occasionally, on various hardware, but I can't easily reproduce it. It looks like a I/O request is either never processed, or never biodone()'ed. But I couldn't spot any race condition in this path ... -- Manuel Bouyer <bou...@antioche.eu.org> NetBSD: 26 ans d'experience feront toujours la difference --