> does anyone have any idea what might be causing them? > This appears similar to issues reported previously: > http://mail-index.netbsd.org/tech-kern/2013/10/19/msg015770.html In my case, they were most probably caused by the disc firmware crashing, the MPT SAS controller locking up and mpt(4) not properly dealing with that.
> My filesystem is FFSv2 with wapbl, sitting on a raidframe mirror > over two SATA drives. In my case, it was FFSv2 with WAPBL on a level 5 RAIDframe accross 5 SAS discs. Btw.: Has anyone tried to import my mpt(4) enhancements? I had several crashes of the disc firmware / controller hick-ups that were caught by my patch (I later updated the firmware and had no crashes since).
