xref: /freebsd/tools/test/stress2/misc/trim8.sh (revision fd45b686f9d92f583366c75b22c04c7ee49709c0)
1#!/bin/sh
2
3#
4# SPDX-License-Identifier: BSD-2-Clause
5#
6# Copyright (c) 2018 Dell EMC Isilon
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13# 2. Redistributions in binary form must reproduce the above copyright
14#    notice, this list of conditions and the following disclaimer in the
15#    documentation and/or other materials provided with the distribution.
16#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27# SUCH DAMAGE.
28#
29
30# Demonstrate disk queue completely full of TRIM commands.
31# "14 seconds elapsed" seen on r337569.
32# Fixed by rxxxxxx.
33
34[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
35trim=$(df -k | sed 1d | sort -rn +3 | awk '{print $NF}' | while read mp; do
36        mount | grep "on $mp " | grep -q ufs || continue
37        on=`mount | grep "on $mp " | awk '{print $1}'`
38        dumpfs $on | head -20 | grep -q trim  || continue
39        echo $on && break
40done)
41[ -z "$trim" ] && exit 0
42mp=`mount | grep "$trim " | awk '{print $3}'`
43echo "Found TRIM on $trim mounted as $mp"
44free=`df -k $mp | tail -1 | awk '{print $4}'`
45free=$((free / 1024 / 1024)) # GB
46[ $free -lt 2 ] && exit 0
47expect=-1
48before=`mount -v | grep "$mp "`
49for i in `jot 40`; do
50        t=`date +%s`
51        dd if=/dev/zero of=$mp/trim.data.$i bs=1m count=1k status=none
52        rm $mp/trim.data.$i
53        t=$((`date +%s` - t))
54        [ $expect -eq -1 ] && expect=$t
55        [ $t -le $((4 * expect)) ] && continue
56        after=`mount -v | grep "$mp "`
57        echo "$t seconds elapsed"
58        echo "Before: $before"
59        echo "After:  $after"
60        exit 1
61done
62exit 0
63