xfs/196: fallback to fail_writes for old kernel
linux XFS rename all "fail_writes" references to "drop_writes" in
v4.11. Some old kernel still use the name "fail_writes", e.g.
RHEL-7. For testing on old kernel, we need to fallback to
"fail_writes".
Signed-off-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
diff --git a/tests/xfs/196 b/tests/xfs/196
index b7d327e..e9b0649 100755
--- a/tests/xfs/196
+++ b/tests/xfs/196
@@ -53,7 +53,13 @@
_supported_fs generic
_supported_os Linux
_require_scratch
-_require_xfs_sysfs $(_short_dev $TEST_DEV)/drop_writes
+
+DROP_WRITES="drop_writes"
+# replace "drop_writes" with "fail_writes" for old kernel
+if [ -f /sys/fs/xfs/$(_short_dev $TEST_DEV)/fail_writes ];then
+ DROP_WRITES="fail_writes"
+fi
+_require_xfs_sysfs $(_short_dev $TEST_DEV)/${DROP_WRITES}
_scratch_mkfs >/dev/null 2>&1
_scratch_mount
@@ -66,7 +72,7 @@
$XFS_IO_PROG -f -c "pwrite 0 $bytes" $file >> $seqres.full 2>&1
# Enable write drops. All buffered writes are dropped from this point on.
-echo 1 > /sys/fs/xfs/$sdev/drop_writes
+echo 1 > /sys/fs/xfs/$sdev/$DROP_WRITES
# Write every other 4k range to split the larger delalloc extent into many more
# smaller extents. Use pwrite because with write failures enabled, all
@@ -83,7 +89,7 @@
$XFS_IO_PROG -c "pwrite $i 4k" $file >> $seqres.full 2>&1
done
-echo 0 > /sys/fs/xfs/$sdev/drop_writes
+echo 0 > /sys/fs/xfs/$sdev/$DROP_WRITES
_scratch_cycle_mount
$XFS_IO_PROG -c 'bmap -vp' $file | _filter_bmap
@@ -98,9 +104,9 @@
$XFS_IO_PROG -fc "pwrite ${offset}m 100m" $file >> $seqres.full 2>&1
punchoffset=$((offset + 75))
- echo 1 > /sys/fs/xfs/$sdev/drop_writes
+ echo 1 > /sys/fs/xfs/$sdev/$DROP_WRITES
$XFS_IO_PROG -c "pwrite ${punchoffset}m 4k" $file >> $seqres.full 2>&1
- echo 0 > /sys/fs/xfs/$sdev/drop_writes
+ echo 0 > /sys/fs/xfs/$sdev/$DROP_WRITES
done
echo "Silence is golden."
