From: Sage Weil <sage@redhat.com>
Date: Sat, 26 Mar 2016 14:30:34 +0000 (-0400)
Subject: os/bluestore: do not do gift beyond the max ratio
X-Git-Tag: v10.1.1~28^2~12
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=4ea630a409d63c647dffc7df91a8acb91134d137;p=ceph.git

os/bluestore: do not do gift beyond the max ratio

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

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 1f516490c7964..46965fded754f 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -1483,6 +1483,14 @@ int BlueStore::_balance_bluefs_freespace(vector<bluestore_extent_t> *extents,
       gift = g;
     reclaim = 0;
   }
+  if (gift) {
+    float new_bluefs_ratio = (float)(bluefs_free + gift) / (float)total_free;
+    if (new_bluefs_ratio >= g_conf->bluestore_bluefs_max_ratio) {
+      dout(10) << __func__ << " gift would push us past the max_ratio,"
+	       << " doing nothing" << dendl;
+      gift = 0;
+    }
+  }
 
   if (gift) {
     // round up to alloc size