18a272653SPeter Holm#!/bin/sh 28a272653SPeter Holm 38a272653SPeter Holm# 4*4d846d26SWarner Losh# SPDX-License-Identifier: BSD-2-Clause 58a272653SPeter Holm# 68a272653SPeter Holm# Copyright (c) 2018 Dell EMC Isilon 78a272653SPeter Holm# 88a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 98a272653SPeter Holm# modification, are permitted provided that the following conditions 108a272653SPeter Holm# are met: 118a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 128a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 138a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 148a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 158a272653SPeter Holm# documentation and/or other materials provided with the distribution. 168a272653SPeter Holm# 178a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 188a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 198a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 208a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 218a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 228a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 238a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 248a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 258a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 268a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 278a272653SPeter Holm# SUCH DAMAGE. 288a272653SPeter Holm# 298a272653SPeter Holm 308a272653SPeter Holm# Demonstrate disk queue completely full of TRIM commands. 318a272653SPeter Holm# "14 seconds elapsed" seen on r337569. 328a272653SPeter Holm# Fixed by rxxxxxx. 338a272653SPeter Holm 348a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 358a272653SPeter Holmtrim=$(df -k | sed 1d | sort -rn +3 | awk '{print $NF}' | while read mp; do 368a272653SPeter Holm mount | grep "on $mp " | grep -q ufs || continue 378a272653SPeter Holm on=`mount | grep "on $mp " | awk '{print $1}'` 388a272653SPeter Holm dumpfs $on | head -20 | grep -q trim || continue 398a272653SPeter Holm echo $on && break 408a272653SPeter Holmdone) 418a272653SPeter Holm[ -z "$trim" ] && exit 0 428a272653SPeter Holmmp=`mount | grep "$trim " | awk '{print $3}'` 438a272653SPeter Holmecho "Found TRIM on $trim mounted as $mp" 448a272653SPeter Holmfree=`df -k $mp | tail -1 | awk '{print $4}'` 458a272653SPeter Holmfree=$((free / 1024 / 1024)) # GB 468a272653SPeter Holm[ $free -lt 2 ] && exit 0 478a272653SPeter Holmexpect=-1 488a272653SPeter Holmbefore=`mount -v | grep "$mp "` 498a272653SPeter Holmfor i in `jot 40`; do 508a272653SPeter Holm t=`date +%s` 518a272653SPeter Holm dd if=/dev/zero of=$mp/trim.data.$i bs=1m count=1k status=none 528a272653SPeter Holm rm $mp/trim.data.$i 538a272653SPeter Holm t=$((`date +%s` - t)) 548a272653SPeter Holm [ $expect -eq -1 ] && expect=$t 558a272653SPeter Holm [ $t -le $((4 * expect)) ] && continue 568a272653SPeter Holm after=`mount -v | grep "$mp "` 578a272653SPeter Holm echo "$t seconds elapsed" 588a272653SPeter Holm echo "Before: $before" 598a272653SPeter Holm echo "After: $after" 608a272653SPeter Holm exit 1 618a272653SPeter Holmdone 628a272653SPeter Holmexit 0 63