From: Sage Weil <sage@redhat.com>
Date: Fri, 25 Mar 2016 14:58:59 +0000 (-0400)
Subject: os/bluestore/FreelistManager: detect overlapping extents on init
X-Git-Tag: v10.1.1~28^2~16
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=1bc7edb31cd4f3cd38c7f9ffdcf6d5bdfdf3a28c;p=ceph.git

os/bluestore/FreelistManager: detect overlapping extents on init

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

diff --git a/src/os/bluestore/FreelistManager.cc b/src/os/bluestore/FreelistManager.cc
index 20480a77958f..0115767884ea 100644
--- a/src/os/bluestore/FreelistManager.cc
+++ b/src/os/bluestore/FreelistManager.cc
@@ -36,6 +36,14 @@ int FreelistManager::init(KeyValueDB *db, string p)
 
     total_free += length;
 
+    if (offset < last_offset + last_length) {
+      derr << __func__ << " detected overlapping extent on load, had "
+	   << last_offset << "~" << last_length
+	   << " and got "
+	   << offset << "~" << length
+	   << dendl;
+      return -EIO;
+    }
     if (offset && offset == last_offset + last_length) {
       derr << __func__ << " detected contiguous extent on load, merging "
 	   << last_offset << "~" << last_length << " with "