From: Omar Sandoval <osandov@xxxxxx>
Btrfs has a bug where we can prematurely ENOSPC if we have lots of
orphaned files, i.e., deleted files which are still open. Add a test
which repeatedly creates and deletes a file while keeping all of the
file descriptors open. This should succeed but doesn't on Btrfs without
the fix.
Signed-off-by: Omar Sandoval <osandov@xxxxxx>
---
tests/generic/479 | 0
tests/generic/487 | 65 +++++++++++++++++++++++++++++++++++++++++++
tests/generic/487.out | 2 ++
tests/generic/group | 1 +
4 files changed, 68 insertions(+)
mode change 100644 => 100755 tests/generic/479
create mode 100755 tests/generic/487
create mode 100644 tests/generic/487.out
diff --git a/tests/generic/479 b/tests/generic/479
old mode 100644
new mode 100755
diff --git a/tests/generic/487 b/tests/generic/487
new file mode 100755
index 00000000..66379cf0
--- /dev/null
+++ b/tests/generic/487
@@ -0,0 +1,65 @@
+#! /bin/bash
+# FS QA Test 487
+#
+# Test having many file descriptors referring to deleted files open. Regression
+# test for patch "Btrfs: fix ENOSPC caused by orphan items reservations".
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2018 Omar Sandoval. 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.*
+}
+
+. ./common/rc
+. ./common/filter
+
+rm -f $seqres.full
+
+_supported_fs generic
+_supported_os Linux
+_require_scratch
+
+_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full 2>&1
+_scratch_mount
+
+test_file="$SCRATCH_MNT/$seq"
+
+(
+ulimit -n $((16 * 1024))
+# ~10000 files on a 1 GB filesystem should be no problem.
+for ((i = 1000; i < 10000; i++)); do
+ eval "exec $i<> \"$test_file\"" && rm "$test_file" || break
+done
+)
+
+echo "Silence is golden"
+
+status=0
+exit
diff --git a/tests/generic/487.out b/tests/generic/487.out
new file mode 100644
index 00000000..5f31fd97
--- /dev/null
+++ b/tests/generic/487.out
@@ -0,0 +1,2 @@
+QA output created by 487
+Silence is golden
diff --git a/tests/generic/group b/tests/generic/group
index 505383f7..93581257 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -489,3 +489,4 @@
484 auto quick
485 auto quick insert
486 auto quick attr
+487 auto quick
--
2.17.0
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