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Re: [PATCH v2 1/3] xfstests/btrfs: add qgroup rescan stress test

To: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
Subject: Re: [PATCH v2 1/3] xfstests/btrfs: add qgroup rescan stress test
From: Josef Bacik <jbacik@xxxxxx>
Date: Thu, 8 May 2014 14:33:27 -0400
Cc: <xfs@xxxxxxxxxxx>, <linux-btrfs@xxxxxxxxxxxxxxx>
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On 05/07/2014 11:38 PM, Wang Shilong wrote:
On 05/08/2014 04:58 AM, Josef Bacik wrote:
On 03/09/2014 11:44 PM, Wang Shilong wrote:
Test flow is to run fsstress after triggering quota rescan.
the ruler is simple, we just remove all files and directories,
sync filesystem and see if qgroup's ref and excl are nodesize.

Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
---
v1->v2:
    switch into new helper _run_btrfs_util_prog()
---
  tests/btrfs/041     | 76
+++++++++++++++++++++++++++++++++++++++++++++++++++++
  tests/btrfs/041.out |  3 +++
  tests/btrfs/group   |  1 +
  3 files changed, 80 insertions(+)
  create mode 100644 tests/btrfs/041
  create mode 100644 tests/btrfs/041.out

diff --git a/tests/btrfs/041 b/tests/btrfs/041
new file mode 100644
index 0000000..92bd080
--- /dev/null
+++ b/tests/btrfs/041
@@ -0,0 +1,76 @@
+#! /bin/bash
+# FSQA Test No. btrfs/041
+#
+# Quota rescan stress test, we run fsstress and quota rescan
concurrently
+#
+#-----------------------------------------------------------------------

+# Copyright (C) 2014 Fujitsu.  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
+
+_cleanup()
+{
+    cd /
+    rm -f $tmp.*
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_need_to_be_root
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+
+rm -f $seqres.full
+
+run_check _scratch_mkfs "-b 1g --nodesize 4096"
+run_check _scratch_mount
+

Add "-o nospace_cache" here please, otherwise I don't get the same
output.

I am little confused why we need specify this mount option explicitly?
As far as i know, space cache is not included into qgroup accounting space.


It is.  Thanks,

Josef

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