vfs.zfs.vdev.bio_delete_disable - crash while changing on the fly

[Eugene M. Zheganin]

Hi.

Recently I've encountered the issue with "slow TRIM" and Sandisk SSDs,
so I was told  to try to disable TRIM and see what happens (thanks a lot
by the way, that did it). But changing the
vfs.zfs.vdev.bio_delete_disable on the fly can lead to the system crash
with the probability of 50%. Is it just me or is this already known ? If
it's known, why isn't this oid in a read-only list ?

Thanks.

P.S. My box tried to dump a core, but after a reboot savecore got
nothing, so you just have to believe me. ;)

Eugene.