From: Rishabh Dave <ridave@redhat.com>
Date: Tue, 24 Apr 2018 08:55:44 +0000 (+0000)
Subject: client: don't hang when MDS sessions are evicted
X-Git-Tag: v13.1.0~12^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=0f56c7e8e5f45112c5924797a7798b3c926d8492;p=ceph.git

client: don't hang when MDS sessions are evicted

Currently, a filesystem client hangs if a request is made after it's
eviction. Prevent the client from hanging and allow a manual unmount
in such cases.

Fixes: http://tracker.ceph.com/issues/10915
Signed-off-by: Rishabh Dave <ridave@redhat.com>
---

diff --git a/src/client/Client.cc b/src/client/Client.cc
index 9f82607609b9..4b980d99afae 100644
--- a/src/client/Client.cc
+++ b/src/client/Client.cc
@@ -13512,6 +13512,7 @@ void Client::ms_handle_remote_reset(Connection *con)
 
 	case MetaSession::STATE_OPEN:
 	  {
+	    objecter->maybe_request_map(); /* to check if we are blacklisted */
 	    const md_config_t *conf = cct->_conf;
 	    if (conf->client_reconnect_stale) {
 	      ldout(cct, 1) << "reset from mds we were open; close mds session for reconnect" << dendl;