From: Sage Weil <sage@newdream.net>
Date: Tue, 12 May 2020 14:55:45 +0000 (-0500)
Subject: ceph-dedup-tool: larger default op size
X-Git-Tag: v16.1.0~2230^2~29
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=cfb6a75f8c834394b1489b1fbadaed5bb987158a;p=ceph.git

ceph-dedup-tool: larger default op size

If we don't read the entire object the rabin calculation won't work.  Avoid
this by default by just using a sufficiently large chunk size.

Signed-off-by: Sage Weil <sage@newdream.net>
---

diff --git a/src/tools/ceph_dedup_tool.cc b/src/tools/ceph_dedup_tool.cc
index 181d96023c33..ae98f914160d 100644
--- a/src/tools/ceph_dedup_tool.cc
+++ b/src/tools/ceph_dedup_tool.cc
@@ -48,7 +48,7 @@
 #include "common/rabin.h"
 
 using namespace librados;
-unsigned default_op_size = 1 << 22;
+unsigned default_op_size = 1 << 26;
 unsigned default_max_thread = 2;
 int32_t default_report_period = 2;
 map< string, pair <uint64_t, uint64_t> > chunk_statistics; // < key, <count, chunk_size> >