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| author | Yan, Zheng <zyan@redhat.com> | 2014-09-10 16:56:23 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@redhat.com> | 2014-10-14 21:03:22 +0400 |
| commit | 5d23371fdb7dc03fa6fe054da3467efb0d347945 (patch) | |
| tree | e05b437dbc072722154b3ee555e7bc514650e0c0 /fs | |
| parent | 589506f1e7f135943bcd34903bcdcf1fdaf00549 (diff) | |
| download | linux-5d23371fdb7dc03fa6fe054da3467efb0d347945.tar.bz2 | |
ceph: trim unused inodes before reconnecting to recovering MDS
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 <zyan@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ceph/mds_client.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index bad07c09f91e..f751fea416e5 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); |