From: Sage Weil <sage@redhat.com>
Date: Thu, 8 Oct 2015 19:35:21 +0000 (-0400)
Subject: osd/ECTransaction: set SEQUENTIAL_WRITE | APPEND_ONLY on ec appends
X-Git-Tag: v11.0.0~466^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=0128adaa8558beecaa0c1bd08646a0578c900e5e;p=ceph.git

osd/ECTransaction: set SEQUENTIAL_WRITE | APPEND_ONLY on ec appends

EC objects are written sequentially and not modified.

Note: we could probably hint about write sizes here,
too...

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

diff --git a/src/osd/ECTransaction.cc b/src/osd/ECTransaction.cc
index 7661ddcd8b9c..37a742cb473b 100644
--- a/src/osd/ECTransaction.cc
+++ b/src/osd/ECTransaction.cc
@@ -162,6 +162,12 @@ struct TransGenerator : public boost::static_visitor<void> {
 	 ++i) {
       assert(buffers.count(i->first));
       bufferlist &enc_bl = buffers[i->first];
+      i->second.set_alloc_hint(
+	get_coll_ct(i->first, op.oid),
+	ghobject_t(op.oid, ghobject_t::NO_GEN, i->first),
+	0, 0,
+	CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_WRITE |
+	CEPH_OSD_ALLOC_HINT_FLAG_APPEND_ONLY);
       i->second.write(
 	get_coll_ct(i->first, op.oid),
 	ghobject_t(op.oid, ghobject_t::NO_GEN, i->first),