| #! /bin/bash |
| # FS QA Test No. 016 |
| # |
| # test end of log overwrite bug #796141 |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms 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. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| # |
| #----------------------------------------------------------------------- |
| # |
| # creator |
| owner=dxm@sgi.com |
| |
| # |
| # pv 796141 |
| # |
| # create a new FS, mostly fill the log. Then wrap the log back to the |
| # start bit by bit to force wiping of stale blocks near the end of the |
| # log. Check the block after the log ends to check for corruption |
| # |
| # assumptions : |
| # - given we're only touching a single inode, the block after the |
| # log which is in the middle ag should never be touched. |
| # if it changes, we assume the log is writing over it |
| # |
| |
| seq=`basename $0` |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 |
| |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| echo "*** unmount" |
| umount $SCRATCH_MNT 2>/dev/null |
| } |
| |
| _block_filter() |
| { |
| sed -e 's/[0-9][0-9]*\.\.[0-9][0-9]*/BLOCKRANGE/g' |
| } |
| |
| _init() |
| { |
| echo "*** reset partition" |
| $here/src/devzero -b 2048 -n 50 -v 198 $SCRATCH_DEV |
| echo "*** mkfs" |
| force_opts="-dsize=50m -lsize=$log_size" |
| echo mkfs_xfs $force_opts $SCRATCH_DEV >>$seq.full |
| _scratch_mkfs_xfs $force_opts >$tmp.mkfs0 2>&1 |
| [ $? -ne 0 ] && \ |
| _notrun "Cannot mkfs for this test using MKFS_OPTIONS specified" |
| _filter_mkfs <$tmp.mkfs0 >/dev/null 2>$tmp.mkfs |
| . $tmp.mkfs |
| [ $logsunit -ne 0 ] && \ |
| _notrun "Cannot run this test using log MKFS_OPTIONS specified" |
| } |
| |
| _log_traffic() |
| { |
| count=$1 |
| echo "*** generate log traffic" |
| |
| out=$SCRATCH_MNT/$$.tmp |
| |
| echo " *** mount" |
| if ! _scratch_mount |
| then |
| echo "failed to mount $SCRATCH_DEV" |
| exit 1 |
| fi |
| |
| # having any quota enabled (acct/enfd) means extra log traffic - evil! |
| $here/src/feature -U $SCRATCH_DEV && \ |
| _notrun "UQuota are enabled, test needs controlled log traffic" |
| $here/src/feature -G $SCRATCH_DEV && \ |
| _notrun "GQuota are enabled, test needs controlled log traffic" |
| $here/src/feature -P $SCRATCH_DEV && \ |
| _notrun "PQuota are enabled, test needs controlled log traffic" |
| |
| echo " *** fiddle" |
| while [ $count -ge 0 ] |
| do |
| touch $out |
| sync |
| rm $out |
| sync |
| let "count = count - 1" |
| done |
| |
| echo " *** unmount" |
| if ! umount $SCRATCH_DEV |
| then |
| echo "failed to unmount $SCRATCH_DEV" |
| exit 1 |
| fi |
| } |
| |
| _log_size() |
| { |
| _scratch_xfs_logprint -tb | $AWK_PROG ' |
| /log file: / || /log device: / { print $7} |
| ' |
| } |
| |
| _log_head() |
| { |
| _scratch_xfs_logprint -tb | $AWK_PROG ' |
| /head:/ { print $5 } |
| ' |
| } |
| |
| # Get log stripe unit for v2 logs; if none specified, |
| # (or v1 log) just return "1" block |
| |
| _log_sunit() |
| { |
| if [ ${lsunit:-0} -eq 0 ]; then |
| echo $dbsize |
| else |
| expr $lsunit \* $dbsize |
| fi |
| } |
| |
| _after_log() |
| { |
| xfs_db -r $1 -c "sb" -c "print" | $AWK_PROG ' |
| /logstart/ { logstart = $3 } |
| /logblocks/ { logblocks = $3 } |
| END { |
| print logstart + logblocks |
| } |
| ' |
| } |
| |
| _check_corrupt() |
| { |
| f="c6c6c6c6" |
| echo "*** check for corruption" |
| echo "expect $f..." >>$seq.full |
| xfs_db -r -c "fsblock $2" -c "print" $1 | head | tee -a $seq.full | \ |
| grep -q -v "$f $f $f $f $f $f $f $f" && \ |
| _fail "!!! block $2 corrupted!" |
| } |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| |
| # real QA test starts here |
| _supported_fs xfs |
| _supported_os Linux |
| |
| rm -f $seq.full |
| |
| # mkfs sizes |
| log_size=2097152 |
| log_size_bb=`expr $log_size / 512` |
| |
| _require_scratch |
| _init |
| |
| block=`_after_log $SCRATCH_DEV` |
| echo "fsblock after log = $block" >>$seq.full |
| _check_corrupt $SCRATCH_DEV $block |
| |
| actual_log_size=`_log_size` |
| echo "log size = $actual_log_size BB" >>$seq.full |
| head=`_log_head` |
| echo "log position = $head" >>$seq.full |
| lsunit=`_log_sunit` |
| echo "log sunit = $lsunit" >>$seq.full |
| |
| # sanity checks |
| [ $actual_log_size -eq $log_size_bb ] || \ |
| _fail "!!! unexpected log size $size" |
| [ $head -eq 2 -o $head -eq $((lsunit/512)) ] || \ |
| _fail "!!! unexpected initial log position $head vs. $((lsunit/512))" |
| |
| # find how how many blocks per op for 100 ops |
| # ignore the fact that it will also include an unmount record etc... |
| # this should be small overall |
| echo " lots of traffic for sampling" >>$seq.full |
| sample_size_ops=100 |
| _log_traffic $sample_size_ops |
| head1=`_log_head` |
| num_blocks=`expr $head1 - $head` |
| blocks_per_op=`echo "scale=3; $num_blocks / $sample_size_ops" | bc` |
| echo "blocks_per_op = $blocks_per_op" >>$seq.full |
| num_expected_ops=`echo "$log_size_bb / $blocks_per_op" | bc` |
| echo "num_expected_ops = $num_expected_ops" >>$seq.full |
| num_expected_to_go=`echo "$num_expected_ops - $sample_size_ops" | bc` |
| echo "num_expected_to_go = $num_expected_to_go" >>$seq.full |
| |
| echo " lots more traffic" >>$seq.full |
| _log_traffic $num_expected_to_go |
| head=`_log_head` |
| echo "log position = $head" >>$seq.full |
| |
| # e.g. 3891 |
| near_end_min=`echo "0.95 * $log_size_bb" | bc | sed 's/\..*//'` |
| echo "near_end_min = $near_end_min" >>$seq.full |
| |
| [ $head -gt $near_end_min -a $head -lt $log_size_bb ] || \ |
| _fail "!!! unexpected near end log position $head" |
| |
| for c in `seq 0 20` |
| do |
| echo " little traffic" >>$seq.full |
| _log_traffic 2 |
| head=`_log_head` |
| echo "log position = $head" >>$seq.full |
| _check_corrupt $SCRATCH_DEV $block |
| done |
| |
| [ $head -lt 1000 ] || \ |
| _fail "!!! unexpected wrapped log position $head" |
| |
| # success, all done |
| status=0 |
| exit |