[PATCH] CACHE: Fix test script as delegation being introduced

["Su Yanjun <suyj.fnst@cn.fujitsu.com>" <suyj.fnst@cn.fujitsu.com>]

When we run nfstest_cache with nfsversion=4, it fails.
As i know nfsv4 introduces delegation, so nfstest_cache runs fail since 
nfsv4.

The test commandline is as below:
./nfstest_cache --nfsversion=4 -e /nfsroot --server 192.168.102.143 
--client 192.168.102.142 --runtest acregmax_data --verbose all

This patch adds compatible code for nfsv3 and nfsv4.
When we test nfsv4, just use 'chmod' to recall delegation, then
run the test. As 'chmod' will modify atime, so use 'noatime' mount option.

Signed-off-by: Su Yanjun <suyj.fnst@cn.fujitsu.com>
---
test/nfstest_cache | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/test/nfstest_cache b/test/nfstest_cache
index 0838418..a31d48f 100755
--- a/test/nfstest_cache
+++ b/test/nfstest_cache
@@ -165,8 +165,13 @@ class CacheTest(TestUtil):
fd = None
attr = 'data' if data_cache else 'attribute'
header = "Verify consistency of %s caching with %s on a file" % (attr, 
self.nfsstr())
+
# Mount options
- mtopts = "hard,intr,rsize=4096,wsize=4096"
+ if self.nfsversion >= 4:
+ mtopts = "noatime,hard,intr,rsize=4096,wsize=4096"
+ else: + mtopts = "hard,intr,rsize=4096,wsize=4096"
+
if actimeo:
header += " actimeo = %d" % actimeo
mtopts += ",actimeo=%d" % actimeo
@@ -216,6 +221,11 @@ class CacheTest(TestUtil):
if fstat.st_size != dlen:
raise Exception("Size of newly created file is %d, should have been %d" 
%(fstat.st_size, dlen))
+ if self.nfsversion >= 4:
+ # revoke delegation
+ self.dprint('DBG3', "revoke delegation")
+ self.clientobj.run_cmd('chmod +x %s' % self.absfile)
+
if acregmax:
# Stat the unchanging file until acregmax is hit
# each stat doubles the valid cache time

-- 
2.7.4