LU-12394 llite: Fix extents_stats

[fs/lustre-release.git] / lustre / tests / sanity.sh

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index d6e2f40..36ae722 100644 (file)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -11019,6 +11019,75 @@ test_127b() { # bug LU-333
 }
 run_test 127b "verify the llite client stats are sane"
 
+test_127c() { # LU-12394
+       [ "$OSTCOUNT" -lt "2" ] && skip_env "needs >= 2 OSTs"
+       local size
+       local bsize
+       local reads
+       local writes
+       local count
+
+       $LCTL set_param llite.*.extents_stats=1
+       stack_trap "$LCTL set_param llite.*.extents_stats=0" EXIT
+
+       # Use two stripes so there is enough space in default config
+       $LFS setstripe -c 2 $DIR/$tfile
+
+       # Extent stats start at 0-4K and go in power of two buckets
+       # LL_HIST_START = 12 --> 2^12 = 4K
+       # We do 3K*2^i, so 3K, 6K, 12K, 24K... hitting each bucket.
+       # We do not do buckets larger than 64 MiB to avoid ENOSPC issues on
+       # small configs
+       for size in 3K 6K 12K 24K 48K 96K 192K 384K 768K 1536K 3M 6M 12M 24M 48M;
+               do
+               # Write and read, 2x each, second time at a non-zero offset
+               dd if=/dev/zero of=$DIR/$tfile bs=$size count=1
+               dd if=/dev/zero of=$DIR/$tfile bs=$size count=1 seek=10
+               dd if=$DIR/$tfile of=/dev/null bs=$size count=1
+               dd if=$DIR/$tfile of=/dev/null bs=$size count=1 seek=10
+               rm -f $DIR/$tfile
+       done
+
+       $LCTL get_param llite.*.extents_stats
+
+       count=2
+       for bsize in 4K 8K 16K 32K 64K 128K 256K 512K 1M 2M 4M 8M 16M 32M 64M;
+               do
+               local bucket=$($LCTL get_param -n llite.*.extents_stats |
+                               grep -m 1 $bsize)
+               reads=$(echo $bucket | awk '{print $5}')
+               writes=$(echo $bucket | awk '{print $9}')
+               [ "$reads" -eq $count ] ||
+                       error "$reads reads in < $bsize bucket, expect $count"
+               [ "$writes" -eq $count ] ||
+                       error "$writes writes in < $bsize bucket, expect $count"
+       done
+
+       # Test mmap write and read
+       $LCTL set_param llite.*.extents_stats=c
+       size=512
+       dd if=/dev/zero of=$DIR/$tfile bs=${size}K count=1
+       $MULTIOP $DIR/$tfile OSMRUc || error "$MULTIOP $DIR/$tfile failed"
+       $MULTIOP $DIR/$tfile OSMWUc || error "$MULTIOP $DIR/$tfile failed"
+
+       $LCTL get_param llite.*.extents_stats
+
+       count=$(((size*1024) / PAGE_SIZE))
+
+       bsize=$((2 * PAGE_SIZE / 1024))K
+
+       bucket=$($LCTL get_param -n llite.*.extents_stats |
+                       grep -m 1 $bsize)
+       reads=$(echo $bucket | awk '{print $5}')
+       writes=$(echo $bucket | awk '{print $9}')
+       # mmap writes fault in the page first, creating an additonal read
+       [ "$reads" -eq $((2 * count)) ] ||
+               error "$reads reads in < $bsize bucket, expect $count"
+       [ "$writes" -eq $count ] ||
+               error "$writes writes in < $bsize bucket, expect $count"
+}
+run_test 127c "test llite extent stats with regular & mmap i/o"
+
 test_128() { # bug 15212
        touch $DIR/$tfile
        $LFS 2>&1 <<-EOF | tee $TMP/$tfile.log