So the recovering MDS does not need to fetch these ununsed inodes during cache rejoin. This may reduce MDS recovery time.
Signed-off-by: Yan, Zheng <[email protected]> --- fs/ceph/mds_client.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index bad07c0..f751fea 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2695,16 +2695,6 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc, session->s_state = CEPH_MDS_SESSION_RECONNECTING; session->s_seq = 0; - ceph_con_close(&session->s_con); - ceph_con_open(&session->s_con, - CEPH_ENTITY_TYPE_MDS, mds, - ceph_mdsmap_get_addr(mdsc->mdsmap, mds)); - - /* replay unsafe requests */ - replay_unsafe_requests(mdsc, session); - - down_read(&mdsc->snap_rwsem); - dout("session %p state %s\n", session, session_state_name(session->s_state)); @@ -2723,6 +2713,19 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc, discard_cap_releases(mdsc, session); spin_unlock(&session->s_cap_lock); + /* trim unused caps to reduce MDS's cache rejoin time */ + shrink_dcache_parent(mdsc->fsc->sb->s_root); + + ceph_con_close(&session->s_con); + ceph_con_open(&session->s_con, + CEPH_ENTITY_TYPE_MDS, mds, + ceph_mdsmap_get_addr(mdsc->mdsmap, mds)); + + /* replay unsafe requests */ + replay_unsafe_requests(mdsc, session); + + down_read(&mdsc->snap_rwsem); + /* traverse this session's caps */ s_nr_caps = session->s_nr_caps; err = ceph_pagelist_encode_32(pagelist, s_nr_caps); -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
