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A LVM snapshot regression test by Greg Freemyer.
This commit is contained in:
Nathan Scott
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#! /bin/sh
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# XFS QA Test No. 068
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# $Id: 068,v 1.1 2002/09/02 06:04:01 nathans Exp $
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#
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# Test Linux LVM snapshot creation
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#
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# The timing and placement of kills and waits is particularily sensitive.
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# Don't change them unless you want to spend some time getting it right again.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2000, 2002 Silicon Graphics, Inc. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of version 2 of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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#
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# Further, this software is distributed without any warranty that it is
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# free of the rightful claim of any third person regarding infringement
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# or the like. Any license provided herein, whether implied or
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# otherwise, applies only to this software file. Patent licenses, if
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# any, provided herein do not apply to combinations of this program with
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# other software, or any other product whatsoever.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write the Free Software Foundation, Inc., 59
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# Temple Place - Suite 330, Boston MA 02111-1307, USA.
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#
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# Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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# Mountain View, CA 94043, or:
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#
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# http://www.sgi.com
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#
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# For further information regarding this notice, see:
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#
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# http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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#-----------------------------------------------------------------------
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#
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# creator
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owner=freemyer@NorcrossGroup.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=`mktemp -d /tmp/xfstest.XXXXXX` || exit 1
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status=1 # failure is the default!
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# Either "dd" or "fsstress" can be used to generate io load.
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# Setting both to "FALSE" tests with no io load.
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GENERATE_IO_LOAD_VIA_DD=TRUE
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GENERATE_IO_LOAD_VIA_FSSTRESS=TRUE
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DELAY_BETWEEN_ITERATIONS=10
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#ITERATIONS=10000
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ITERATIONS=2
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VG=/dev/VGscratch
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SCRATCH_SNAP_MNT="$tmp/scratch_snap"
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# Only needed if running by hand, ie. check sets these
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#SCRATCH_LVM_DEV=/dev/xxxx
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#SCRATCH_MNT=/scratch
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_cleanup()
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{
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echo Cleanup beginning
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rm "$tmp/running" > /dev/null 2>&1
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xfs_freeze -u "$SCRATCH_MNT"
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sleep 10 # Give the dd loop time to finish
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# Comment out unless needed.
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# If needed, wrap with logic to ensure the FS is mounted.
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# Kill off any other possible stray stragglers that may be out there.
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# There should not be any.
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#fuser -k -m "$SCRATCH_SNAP_MNT/dummy" >/dev/null 2>&1
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#fuser -k -m "$SCRATCH_MNT/dummy" >/dev/null 2>&1
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wait
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umount "$SCRATCH_SNAP_MNT" > /dev/null 2>&1
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rmdir "$SCRATCH_SNAP_MNT" > /dev/null 2>&1
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umount "$SCRATCH_MNT" > /dev/null 2>&1
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lvremove -f "$VG/scratch_snap" > /dev/null 2>&1
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lvremove -f "$VG/scratch" > /dev/null 2>&1
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#TODO vgremove "$VG"
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rm -rf "$tmp" # if we ever use tmp files
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trap 0 1 2 3 15
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exit $status
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}
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trap "_cleanup" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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[ -e "$SCRATCH_SNAP_MNT" ] && rm -rf "$SCRATCH_SNAP_MNT"
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mkdir "$SCRATCH_SNAP_MNT"
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#Verify we have the lvm user tools
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[ -x /sbin/lvcreate ] || _notrun "lvcreate utility is not installed in /sbin"
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[ -x /sbin/lvremove ] || _notrun "lvremove utility is not installed in /sbin"
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# If the above fails for LVM 2, the below may be useful notes
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# try "lvm vgdisplay --version" and look for a > 1.9x version number, eg,
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#
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# LVM version: 1.95.10-cvs (2002-05-31)
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# Library version: 0.96.03-ioctl-cvs (2002-06-27)
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# Driver version: 1.0.3
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LVM=false
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# Check if LVM 1 is in the kernel
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if grep lvm /proc/devices > /dev/null 2>&1; then LVM=true; fi
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# Check if LVM 2 is in the kernel
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if grep device-mapper /proc/devices > /dev/null 2>&1; then LVM=true; fi
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# Check if EVMS is in the kernel
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#TODO # I don't know how to do this one.
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[ "$LVM" = false ] && _notrun "LVM is not present in the running kernel."
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# real QA test starts here
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# Create a PV set from the scratch partition
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#TODO # (I don't know if this is needed.and it is dangerous because it intentionally deletes the partition table!!!
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#TODO # dd if=/dev/zero of="$SCRATCH_LVM_DEV" bs=512 count=1
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#TODO # pvcreate "$SCRATCH_LVM_DEV"
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# Create a VG from the PV
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#TODO # vgcreate "$VG" "$SCRATCH_LVM_DEV"
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# Create a LV in the VG to snapshot
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#TODO # lvcreate -L 2G -n scratch "$VG"
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# Mount the LV
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mkdir "$SCRATCH_MNT" > /dev/null 2&>1
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mount "$VG/scratch" "$SCRATCH_MNT"
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touch "$tmp/running"
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if [ "$GENERATE_IO_LOAD_VIA_DD" != FALSE ];
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then
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# Create a large 64 Meg zero filled file on the LV
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dd if=/dev/zero of=$SCRATCH_MNT/dummy bs=64k count=1000 >/dev/null 2>&1
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# Setup infinite loop copying the large file, thus generating heavy I/O
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touch "$tmp/running"
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while [ -f "$tmp/running" ]
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do
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dd if="$SCRATCH_MNT/dummy" of="$SCRATCH_MNT/junk" bs=64k \
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> /dev/null 2>&1
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# This forces metadata updates the next time around
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rm "$SCRATCH_MNT/junk"
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sync
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done
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fi &
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if [ "$GENERATE_IO_LOAD_VIA_FSSTRESS" != FALSE ];
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then
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STRESS_DIR="$SCRATCH_MNT/fsstress_test_dir"
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mkdir "$STRESS_DIR"
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while [ -f "$tmp/running" ]
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do
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# -n 10 makes this take about 10 seconds,
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# This allows the loop to end shortly after $tmp/running
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# is deleted
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$here/src/fsstress -d "$STRESS_DIR" -n 10 > /dev/null 2>&1
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sync
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done
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rm -rf "$STRESS_DIR"
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fi &
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ii=1
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while [ $ii -le "$ITERATIONS" ]
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do
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# Useful if running interactively, but not from the xfs test scripts
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#echo $ii
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# If the VFS lock patch is present, the calls to xfs_freeze
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# are redundant, but should cause no problems
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# OPTIONAL
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xfs_freeze -f "$SCRATCH_MNT"
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if [ $? != 0 ] ; then
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echo xfs_freeze -f "$SCRATCH_MNT" failed
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fi
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(
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lvcreate --snapshot --size 1G --name scratch_snap "$VG/scratch"\
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> /dev/null 2>&1
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ret=$?
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[ $ret != 0 ] && \
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echo "Snapshot $SCRATCH_MNT create failed, status=$ret"
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fi
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) &
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SNAPSHOT_shell_pid=$!
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# If the Snapshot has not completed in ten minutes, kill it
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(
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# I have NOT figured out how to kill the sleep 600 before
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# it exits naturally.
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# This does not cause a problem, but it clutters the ps table.
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sleep 600
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# The kill $TIMEOUT_shell_pid keeps the below from occuring
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echo Snapshot Lockup Occured on loop $ii
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xfs_freeze -u "$SCRATCH_MNT"
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kill $$
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) &
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TIMEOUT_shell_pid=$!
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wait "$SNAPSHOT_shell_pid"
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exec 2> /dev/null # Send the shells stderr to /dev/null
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kill "$TIMEOUT_shell_pid" # Cancel the timeout
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wait "$TIMEOUT_shell_pid" # This causes consistent shell
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# notification for some unknown reason
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exec 2>&1 # Put it back to the same as stdout
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# If the VFS lock patch is present, the calls to xfs_freeze
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# are redundant, but should cause no problems
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# OPTIONAL
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xfs_freeze -u "$SCRATCH_MNT"
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if [ $? != 0 ] ; then
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echo xfs_freeze -u "$SCRATCH_MNT" failed
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fi
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# MANDANTORY (end)
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mount -t xfs -o ro,nouuid "$VG/scratch_snap" "$SCRATCH_SNAP_MNT"
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if [ $? != 0 ] ; then
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echo mount for "$SCRATCH_SNAP_MNT" failed
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fi
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umount "$SCRATCH_SNAP_MNT"
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if [ $? != 0 ] ; then
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echo umount for "$SCRATCH_SNAP_MNT" failed
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fi
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lvremove -f "$VG/scratch_snap" > /dev/null 2>&1
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if [ $? != 0 ] ; then
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echo lvremove for "$VG/scratch_snap" failed
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fi
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ii=`expr $ii + 1`
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sleep "$DELAY_BETWEEN_ITERATIONS"
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# The VG seems to need time to stabalize between snapshots
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# With LVM 1.0.3 and XFS 1.1, I have tried this at 3600 seconds
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# and still had failures
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done
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# success, all done
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echo SUCCESS, COMPLETED ALL ITERATIONS WITH NO TIME OUTS!!!!!!!!!!!!
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status=0
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_cleanup
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exit 1 # _cleanup should exit, so we should never get here.
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@@ -0,0 +1,3 @@
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QA output created by 068
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SUCCESS, COMPLETED ALL ITERATIONS WITH NO TIME OUTS!!!!!!!!!!!!
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Cleanup beginning
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