From: Kefu Chai <kchai@redhat.com>
Date: Wed, 14 Nov 2018 08:33:04 +0000 (+0800)
Subject: erasure-code/lrc: error out if "l == 0"
X-Git-Tag: v14.1.0~905^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F25046%2Fhead;p=ceph.git

erasure-code/lrc: error out if "l == 0"

l (locality) should not be 0, and k+m should be multiple of it

Signed-off-by: Kefu Chai <kchai@redhat.com>
---

diff --git a/src/erasure-code/lrc/ErasureCodeLrc.cc b/src/erasure-code/lrc/ErasureCodeLrc.cc
index 2526774c38ac..77e1eb98ff9f 100644
--- a/src/erasure-code/lrc/ErasureCodeLrc.cc
+++ b/src/erasure-code/lrc/ErasureCodeLrc.cc
@@ -324,7 +324,7 @@ int ErasureCodeLrc::parse_kml(ErasureCodeProfile &profile,
     }
   }
 
-  if ((k + m) % l) {
+  if (l == 0 || (k + m) % l) {
     *ss << "k + m must be a multiple of l in "
 	<< profile << std::endl;
     return ERROR_LRC_K_M_MODULO;