Hi,
I've received a bug report in zfs-fuse that doesn't seem to be specific to the
port.
The problem was introduced in arc.c revision 1.15. There's a new static
variable arc_min_prefetch_lifespan that initially is 1 second but it is
converted to clock ticks in arc_init():
/* Convert seconds to clock ticks */
arc_min_prefetch_lifespan *= hz;
However, arc_init() is called more than once in ztest, so
arc_min_prefetch_lifespan keeps getting multiplied by hz (119).
This results in an almost infinite loop in arc_flush(), since arc_evict()
skips prefetch buffers with a lifespan less than (in my particular test-case)
119*119*119 seconds..
