I'm seeing some LORs on a fresh install of 11.0-ALPHA5 - single-disk zfs,
There's some similarity to kern/209816, but mine are on unmount.
FreeBSD xx 11.0-ALPHA5 FreeBSD 11.0-ALPHA5 #0 r302164: Fri Jun 24 02:51:52 UTC
2016 r...@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
1st 0xfffff80007cd0b78 zfs (zfs) @ /usr/src/sys/kern/vfs_mount.c:1222
2nd 0xfffff8002d33d418 zfs_gfs (zfs_gfs) @
More details (with stacks) are at
It seems to happen on shutdown. I don't think I've seen it hang.
The log shows one involving ufs instead of zfs, unfortunately without a stack.
I'm not sure why that is, unless it was the installation memstick.
There's another, probably unrelated, LOR that I'll put in a second message.
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