On btrfs, if a large dio write (>=128MB) got splitted, the outstanding_extents
assertion would complain. Note that CONFIG_BTRFS_ASSERT is required.
Regression test for
Btrfs: adjust outstanding_extents counter properly when dio write is split
Signed-off-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
I didn't figure out how to check if CONFIG_BTRFS_ASSERT is enabled, but since
there is no btrfs specific stuff in the test case, it might be better to not
have such a _require check b/c it doesn't make sense to other FS.
tests/generic/392 | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/392.out | 2 ++
tests/generic/group | 1 +
3 files changed, 78 insertions(+)
create mode 100755 tests/generic/392
create mode 100644 tests/generic/392.out
diff --git a/tests/generic/392 b/tests/generic/392
new file mode 100755
index 0000000..4d88c44
--- /dev/null
+++ b/tests/generic/392
@@ -0,0 +1,75 @@
+#! /bin/bash
+# FS QA Test generic/392
+#
+# If a larger dio write (size >= 128M) got splitted, the assertion in endio
+# would complain (CONFIG_BTRFS_ASSERT is required).
+#
+# Regression test for
+# Btrfs: adjust outstanding_extents counter properly when dio write is split
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2017 Liu Bo. 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
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs generic
+_supported_os Linux
+_require_scratch
+_require_odirect
+
+# 2G / 1K
+fsblock=$((1 << 21))
+fssize=$((1 << 31))
+_require_fs_space $SCRATCH_MNT $fsblock
+
+_scratch_mkfs_sized $fssize >> $seqres.full 2>&1
+_scratch_mount >> $seqres.full 2>&1
+
+echo "Silence is golden"
+
+blocksize=$(( (128 + 1) * 2 * 1024 * 1024))
+$XFS_IO_PROG -f -d -c "pwrite -b ${blocksize} 0 ${blocksize}" $SCRATCH_MNT/testfile.$seq >> $seqres.full 2>&1
+
+_scratch_unmount
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/392.out b/tests/generic/392.out
new file mode 100644
index 0000000..665233c
--- /dev/null
+++ b/tests/generic/392.out
@@ -0,0 +1,2 @@
+QA output created by 392
+Silence is golden
diff --git a/tests/generic/group b/tests/generic/group
index 2c16bd1..1631933 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -394,3 +394,4 @@
389 auto quick acl
390 auto freeze stress dangerous
391 auto quick rw
+392 auto quick dangerous
--
2.5.0
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