[PATCH 01/20] xfs/104: don't enospc when ag metadata overhead grows

Darrick J. Wong
2016-06-17T01:46:19Z

Adapt to different metadata overhead sizes by trying to reserve
decreasing amounts of disk space until we actually succeed at it.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
tests/xfs/104 | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tests/xfs/104 b/tests/xfs/104
index 17f9b62..785027e 100755
--- a/tests/xfs/104
+++ b/tests/xfs/104
@@ -88,9 +88,14 @@ sizeb=`expr $size / $dbsize` # in data blocks
echo "*** creating scratch filesystem"
_create_scratch -lsize=10m -dsize=${size} -dagcount=${nags}

-fillsize=`expr 110 \* 1048576` # 110 megabytes of filling
echo "*** using some initial space on scratch filesystem"
-_fill_scratch $fillsize
+for i in `seq 125 -1 90`; do
+ fillsize=`expr $i \* 1048576`
+ out="$(_fill_scratch $fillsize 2>&1)"
+ echo "$out" | grep -q 'No space left on device' && continue
+ test -n "${out}" && echo "$out"
+ break
+done

#
# Grow the filesystem while actively stressing it...