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