ceph-disk: default WAL size of 576 MB

Enough for 2 256MB write buffers, and then some.

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/ceph-disk/ceph_disk/main.py b/src/ceph-disk/ceph_disk/main.py
index 7cc49385de1922835d68bb5302283a6570a08f43..2a38b3d866d8e09d35403e38783e6844f035557c 100755 (executable)
--- a/src/ceph-disk/ceph_disk/main.py
+++ b/src/ceph-disk/ceph_disk/main.py
@@ -2265,7 +2265,7 @@ class PrepareBluestoreBlockWAL(PrepareSpace):
         )
 
         if block_size is None:
-            return 128  # MB, default value
+            return 576  # MB, default value
         else:
             return int(block_size) / 1048576  # MB