Ceph » CephFS

This was fixed in https://github.com/ceph/ceph/pull/19440/commits/67ca6cd229a595d54ccea18b5452f2574ede9657

The fix was not backported but should have been. There is no way to update the MDSMap session_timeout field and the config option (mds_session_timeout) is not applied consistently. see:

pdonnell@icewind ~/ceph$ git grep mds_session_timeout src/
src/common/legacy_config_opts.h:OPTION(mds_session_timeout, OPT_FLOAT)    // cap bits and leases time out if client unresponsive or not returning its caps
src/common/legacy_config_opts.h:              //  make it (mds_session_timeout - mds_beacon_grace)
src/common/options.cc:    Option("mds_session_timeout", Option::TYPE_FLOAT, Option::LEVEL_ADVANCED)
src/mds/FSMap.cc:  fs->mds_map.session_timeout = g_conf->mds_session_timeout;
src/mds/FSMap.cc:  new_fs->mds_map.session_timeout = g_conf->mds_session_timeout;
src/mds/Locker.cc: * mds_session_timeout threshold.
src/mds/Locker.cc:    if (age <= g_conf->mds_session_timeout) {
src/mds/Locker.cc:      dout(20) << __func__ << " age below timeout " << g_conf->mds_session_timeout << dendl;
src/mds/Locker.cc:    if (age > g_conf->mds_session_timeout * (1 << cap->get_num_revoke_warnings())) {
pdonnell@icewind ~/ceph$ git grep get_session_timeout src/
src/client/Client.cc:   session->last_cap_renew_request + mdsmap->get_session_timeout();
src/client/Client.cc:    if (el > mdsmap->get_session_timeout() / 3.0)
src/mds/Beacon.cc:                                           mds->mdsmap->get_session_timeout());
src/mds/MDSMap.h:  utime_t get_session_timeout() const {
src/mds/Server.cc:  double cutoff = queue_max_age + mds->mdsmap->get_session_timeout();