rbd_fsx: do not exceed 250GB for fsx image

This breaks on 32-bit architectures because fsx can't allocate the
in-memory buffer or hit some other limit.  500MG also seems to run out of
memory (tho it at least does not segfault).

Fixes: #6576
Signed-off-by: Sage Weil <sage@inktank.com>

diff --git a/teuthology/task/rbd_fsx.py b/teuthology/task/rbd_fsx.py
index 97d2850877290235cdadb77e1bc6cd6f203e9777..9101a8ee6f7af667c1035745ebcc4f14e0ba64e1 100644 (file)
--- a/teuthology/task/rbd_fsx.py
+++ b/teuthology/task/rbd_fsx.py
@@ -51,7 +51,7 @@ def _run_one_client(ctx, config, role):
             '-p', str(config.get('progress_interval', 100)),  # show progress
             '-P', '{tdir}/archive'.format(tdir=testdir),
             '-t', str(config.get('truncbdy',1)),
-            '-l', str(config.get('size', 1073741824)),
+            '-l', str(config.get('size', 250000000)),
             '-S', str(config.get('seed', 0)),
             '-N', str(config.get('ops', 1000)),
             'pool_{pool}'.format(pool=role),