https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262894
--- Comment #13 from Krautmaster <mathias.kr...@gmx.de> --- while it crashed before within minutes after some load on the encrypted ZFS volume, it copies now since ~4h at high IO without an issue. Maybe too early for a final statement, but that "unmapped I/O in GELI" could be the case so your feeling might be right. Will keep the machine online for as long as needed and see if it fails the next days. Also checked the data/crash folder on FreeBSD 12, not a single entry and four within barely a week in FreeBSD 13.1. Thanks for the fast support. Will keep updating on that patched Kernel -- You are receiving this mail because: You are the assignee for the bug.