1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5*8a272653SPeter Holm# 6*8a272653SPeter Holm# Copyright (c) 2018 Dell EMC Isilon 7*8a272653SPeter Holm# 8*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 9*8a272653SPeter Holm# modification, are permitted provided that the following conditions 10*8a272653SPeter Holm# are met: 11*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 12*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 13*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 14*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 15*8a272653SPeter Holm# documentation and/or other materials provided with the distribution. 16*8a272653SPeter Holm# 17*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*8a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*8a272653SPeter Holm# SUCH DAMAGE. 28*8a272653SPeter Holm# 29*8a272653SPeter Holm 30*8a272653SPeter Holm# Demonstrate disk queue completely full of TRIM commands. 31*8a272653SPeter Holm# "14 seconds elapsed" seen on r337569. 32*8a272653SPeter Holm# Fixed by rxxxxxx. 33*8a272653SPeter Holm 34*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 35*8a272653SPeter Holmtrim=$(df -k | sed 1d | sort -rn +3 | awk '{print $NF}' | while read mp; do 36*8a272653SPeter Holm mount | grep "on $mp " | grep -q ufs || continue 37*8a272653SPeter Holm on=`mount | grep "on $mp " | awk '{print $1}'` 38*8a272653SPeter Holm dumpfs $on | head -20 | grep -q trim || continue 39*8a272653SPeter Holm echo $on && break 40*8a272653SPeter Holmdone) 41*8a272653SPeter Holm[ -z "$trim" ] && exit 0 42*8a272653SPeter Holmmp=`mount | grep "$trim " | awk '{print $3}'` 43*8a272653SPeter Holmecho "Found TRIM on $trim mounted as $mp" 44*8a272653SPeter Holmfree=`df -k $mp | tail -1 | awk '{print $4}'` 45*8a272653SPeter Holmfree=$((free / 1024 / 1024)) # GB 46*8a272653SPeter Holm[ $free -lt 2 ] && exit 0 47*8a272653SPeter Holmexpect=-1 48*8a272653SPeter Holmbefore=`mount -v | grep "$mp "` 49*8a272653SPeter Holmfor i in `jot 40`; do 50*8a272653SPeter Holm t=`date +%s` 51*8a272653SPeter Holm dd if=/dev/zero of=$mp/trim.data.$i bs=1m count=1k status=none 52*8a272653SPeter Holm rm $mp/trim.data.$i 53*8a272653SPeter Holm t=$((`date +%s` - t)) 54*8a272653SPeter Holm [ $expect -eq -1 ] && expect=$t 55*8a272653SPeter Holm [ $t -le $((4 * expect)) ] && continue 56*8a272653SPeter Holm after=`mount -v | grep "$mp "` 57*8a272653SPeter Holm echo "$t seconds elapsed" 58*8a272653SPeter Holm echo "Before: $before" 59*8a272653SPeter Holm echo "After: $after" 60*8a272653SPeter Holm exit 1 61*8a272653SPeter Holmdone 62*8a272653SPeter Holmexit 0 63