rados.py: Add write_fadvise_dontneed field

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>

diff --git a/tasks/rados.py b/tasks/rados.py
index 570a6f4f2412c741fe0e1bfaf414ec7f8eeaeaf3..720da159630d0340bc37daf637c26cb1710bb155 100644 (file)
--- a/tasks/rados.py
+++ b/tasks/rados.py
@@ -30,6 +30,9 @@ def task(ctx, config):
           ec_pool: use an ec pool
           erasure_code_profile: profile to use with the erasure coded pool
           pool_snaps: use pool snapshots instead of selfmanaged snapshots
+         write_fadvise_dontneed: write behavior like with LIBRADOS_OP_FLAG_FADVISE_DONTNEED.
+                                 This mean data don't access in the near future.
+                                 Let osd backend don't keep data in cache.
 
     For example::
 
@@ -58,6 +61,7 @@ def task(ctx, config):
               m: 1
               ruleset-failure-domain: osd
             pool_snaps: true
+           write_fadvise_dontneed: true
             runs: 10
         - interactive:
 
@@ -100,6 +104,8 @@ def task(ctx, config):
         'ceph_test_rados']
     if config.get('ec_pool', False):
         args.extend(['--ec-pool'])
+    if config.get('write_fadvise_dontneed', False):
+        args.extend(['--write-fadvise-dontneed'])
     if config.get('pool_snaps', False):
         args.extend(['--pool-snaps'])
     args.extend([