4 # test end of log overwrite bug #796141
6 #-----------------------------------------------------------------------
7 # Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
8 #-----------------------------------------------------------------------
16 # create a new FS, mostly fill the log. Then wrap the log back to the
17 # start bit by bit to force wiping of stale blocks near the end of the
18 # log. Check the block after the log ends to check for corruption
21 # - given we're only touching a single inode, the block after the
22 # log which is in the middle ag should never be touched.
23 # if it changes, we assume the log is writing over it
27 echo "QA output created by $seq"
33 trap "_cleanup; exit \$status" 0 1 2 3 15
40 umount $SCRATCH_MNT 2>/dev/null
45 sed -e 's/[0-9][0-9]*\.\.[0-9][0-9]*/BLOCKRANGE/g'
50 echo "*** reset partition"
51 $here/src/devzero -b 2048 -n 50 -v 198 $SCRATCH_DEV
53 force_opts="-dsize=50m -lsize=$log_size"
54 echo mkfs_xfs $force_opts $SCRATCH_DEV >>$seq.full
55 _scratch_mkfs_xfs $force_opts >$tmp.mkfs0 2>&1
57 _notrun "Cannot mkfs for this test using MKFS_OPTIONS specified"
58 _filter_mkfs <$tmp.mkfs0 >/dev/null 2>$tmp.mkfs
60 [ $logsunit -ne 0 ] && \
61 _notrun "Cannot run this test using log MKFS_OPTIONS specified"
67 echo "*** generate log traffic"
69 out=$SCRATCH_MNT/$$.tmp
74 echo "failed to mount $SCRATCH_DEV"
78 # having any quota enabled (acct/enfd) means extra log traffic - evil!
79 $here/src/feature -U $SCRATCH_DEV && \
80 _notrun "UQuota are enabled, test needs controlled log traffic"
81 $here/src/feature -G $SCRATCH_DEV && \
82 _notrun "GQuota are enabled, test needs controlled log traffic"
83 $here/src/feature -P $SCRATCH_DEV && \
84 _notrun "PQuota are enabled, test needs controlled log traffic"
87 while [ $count -ge 0 ]
91 let "count = count - 1"
95 if ! umount $SCRATCH_DEV
97 echo "failed to unmount $SCRATCH_DEV"
104 _scratch_xfs_logprint -tb | $AWK_PROG '
105 /log file: / || /log device: / { print $7}
111 _scratch_xfs_logprint -tb | $AWK_PROG '
116 # Get log stripe unit for v2 logs; if none specified,
117 # (or v1 log) just return "1" block
121 if [ ${lsunit:-0} -eq 0 ]; then
124 expr $lsunit \* $dbsize
130 xfs_db -r $1 -c "sb" -c "print" | $AWK_PROG '
131 /logstart/ { logstart = $3 }
132 /logblocks/ { logblocks = $3 }
134 print logstart + logblocks
142 echo "*** check for corruption"
143 echo "expect $f..." >>$seq.full
144 xfs_db -r -c "fsblock $2" -c "print" $1 | head | tee -a $seq.full | \
145 grep -q -v "$f $f $f $f $f $f $f $f" && \
146 _fail "!!! block $2 corrupted!"
149 # get standard environment, filters and checks
153 # real QA test starts here
161 log_size_bb=`expr $log_size / 512`
166 block=`_after_log $SCRATCH_DEV`
167 echo "fsblock after log = $block" >>$seq.full
168 _check_corrupt $SCRATCH_DEV $block
170 actual_log_size=`_log_size`
171 echo "log size = $actual_log_size BB" >>$seq.full
173 echo "log position = $head" >>$seq.full
175 echo "log sunit = $lsunit" >>$seq.full
178 [ $actual_log_size -eq $log_size_bb ] || \
179 _fail "!!! unexpected log size $size"
180 [ $head -eq 2 -o $head -eq $((lsunit/512)) ] || \
181 _fail "!!! unexpected initial log position $head vs. $((lsunit/512))"
183 # find how how many blocks per op for 100 ops
184 # ignore the fact that it will also include an unmount record etc...
185 # this should be small overall
186 echo " lots of traffic for sampling" >>$seq.full
188 _log_traffic $sample_size_ops
190 num_blocks=`expr $head1 - $head`
191 blocks_per_op=`echo "scale=3; $num_blocks / $sample_size_ops" | bc`
192 echo "blocks_per_op = $blocks_per_op" >>$seq.full
193 num_expected_ops=`echo "$log_size_bb / $blocks_per_op" | bc`
194 echo "num_expected_ops = $num_expected_ops" >>$seq.full
195 num_expected_to_go=`echo "$num_expected_ops - $sample_size_ops" | bc`
196 echo "num_expected_to_go = $num_expected_to_go" >>$seq.full
198 echo " lots more traffic" >>$seq.full
199 _log_traffic $num_expected_to_go
201 echo "log position = $head" >>$seq.full
204 near_end_min=`echo "0.95 * $log_size_bb" | bc | sed 's/\..*//'`
205 echo "near_end_min = $near_end_min" >>$seq.full
207 [ $head -gt $near_end_min -a $head -lt $log_size_bb ] || \
208 _fail "!!! unexpected near end log position $head"
212 echo " little traffic" >>$seq.full
215 echo "log position = $head" >>$seq.full
216 _check_corrupt $SCRATCH_DEV $block
219 [ $head -lt 1000 ] || \
220 _fail "!!! unexpected wrapped log position $head"