[PATCH v1] generic/476: requires 27GB scratch size

[bxue@redhat.com]

From: Boyang Xue <bxue@redhat.com>

The test requires larger scratch dev size when running on top of NFS other
than ext4 and xfs. It requires at least 27GB in my test. Without this
requirement, the test run never finishes on NFS, leaving 100% scratch disk
space use.

Signed-off-by: Boyang Xue <bxue@redhat.com>
---
Hi,

I find generic/476 easily goes into an infinite run on top of NFS. When it
happens, the common pattern is 100% disk space use of SCRATCH_MNT, and
`nfsiostat` shows 50% write error on SCRATCH_MNT. When I run it with a large
enough SCRATCH_MNT, the problem disappears. So I post this patch to add the size
requirement.

Please help review this patch. Thanks!

-Boyang

 tests/generic/476 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/generic/476 b/tests/generic/476
index 212373d1..dcc7c3da 100755
--- a/tests/generic/476
+++ b/tests/generic/476
@@ -24,6 +24,7 @@ _cleanup()
 _supported_fs generic
 
 _require_scratch
+_require_scratch_size $((27 * 1024 * 1024)) # 27GB
 _require_command "$KILLALL_PROG" "killall"
 
 echo "Silence is golden."
-- 
2.27.0