osd: add osd_inject_bad_map_crc_probability option

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

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index be9cb1311a8d1b39b21ae0fb28796abfe82d4eb2..bf0365077a6db028a69b6bec4282cf701fc7a140 100644 (file)
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -488,6 +488,7 @@ OPTION(osd_map_max_advance, OPT_INT, 200) // make this < cache_size!
 OPTION(osd_map_cache_size, OPT_INT, 500)
 OPTION(osd_map_message_max, OPT_INT, 100)  // max maps per MOSDMap message
 OPTION(osd_map_share_max_epochs, OPT_INT, 100)  // cap on # of inc maps we send to peers, clients
+OPTION(osd_inject_bad_map_crc_probability, OPT_FLOAT, 0)
 OPTION(osd_op_threads, OPT_INT, 2)    // 0 == no threading
 OPTION(osd_peering_wq_batch_size, OPT_U64, 20)
 OPTION(osd_op_pq_max_tokens_per_priority, OPT_U64, 4194304)

diff --git a/src/osd/OSD.cc b/src/osd/OSD.cc
index 023529c63736d04c2907b526f27f2129b6a73061..9f202869b054d089f331cc5465d4a40a27b1bbbe 100644 (file)
--- a/src/osd/OSD.cc
+++ b/src/osd/OSD.cc
@@ -6191,7 +6191,14 @@ void OSD::handle_osd_map(MOSDMap *m)
       bufferlist fbl;
       o->encode(fbl, inc.encode_features | CEPH_FEATURE_RESERVED);
 
-      if (o->get_crc() != inc.full_crc) {
+      bool injected_failure = false;
+      if (g_conf->osd_inject_bad_map_crc_probability > 0 &&
+         (rand() % 10000) < g_conf->osd_inject_bad_map_crc_probability*10000.0) {
+       derr << __func__ << " injecting map crc failure" << dendl;
+       injected_failure = true;
+      }
+
+      if (o->get_crc() != inc.full_crc || injected_failure) {
        dout(2) << "got incremental " << e
                << " but failed to encode full with correct crc; requesting"
                << dendl;