diff options
Diffstat (limited to 'fs/ceph/mds_client.c')
-rw-r--r-- | fs/ceph/mds_client.c | 132 |
1 files changed, 84 insertions, 48 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index d90861f45210..f4f050a69a48 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -63,7 +63,7 @@ static const struct ceph_connection_operations mds_con_ops; */ static int parse_reply_info_in(void **p, void *end, struct ceph_mds_reply_info_in *info, - int features) + u64 features) { int err = -EIO; @@ -98,7 +98,7 @@ bad: */ static int parse_reply_info_trace(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { int err; @@ -145,7 +145,7 @@ out_bad: */ static int parse_reply_info_dir(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { u32 num, i = 0; int err; @@ -217,7 +217,7 @@ out_bad: */ static int parse_reply_info_filelock(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { if (*p + sizeof(*info->filelock_reply) > end) goto bad; @@ -238,7 +238,7 @@ bad: */ static int parse_reply_info_create(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { if (features & CEPH_FEATURE_REPLY_CREATE_INODE) { if (*p == end) { @@ -262,7 +262,7 @@ bad: */ static int parse_reply_info_extra(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { if (info->head->op == CEPH_MDS_OP_GETFILELOCK) return parse_reply_info_filelock(p, end, info, features); @@ -280,7 +280,7 @@ static int parse_reply_info_extra(void **p, void *end, */ static int parse_reply_info(struct ceph_msg *msg, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { void *p, *end; u32 len; @@ -713,14 +713,15 @@ static int __choose_mds(struct ceph_mds_client *mdsc, struct dentry *dn = get_nonsnap_parent(parent); inode = dn->d_inode; dout("__choose_mds using nonsnap parent %p\n", inode); - } else if (req->r_dentry->d_inode) { + } else { /* dentry target */ inode = req->r_dentry->d_inode; - } else { - /* dir + name */ - inode = dir; - hash = ceph_dentry_hash(dir, req->r_dentry); - is_hash = true; + if (!inode || mode == USE_AUTH_MDS) { + /* dir + name */ + inode = dir; + hash = ceph_dentry_hash(dir, req->r_dentry); + is_hash = true; + } } } @@ -846,35 +847,56 @@ static int __open_session(struct ceph_mds_client *mdsc, * * called under mdsc->mutex */ +static struct ceph_mds_session * +__open_export_target_session(struct ceph_mds_client *mdsc, int target) +{ + struct ceph_mds_session *session; + + session = __ceph_lookup_mds_session(mdsc, target); + if (!session) { + session = register_session(mdsc, target); + if (IS_ERR(session)) + return session; + } + if (session->s_state == CEPH_MDS_SESSION_NEW || + session->s_state == CEPH_MDS_SESSION_CLOSING) + __open_session(mdsc, session); + + return session; +} + +struct ceph_mds_session * +ceph_mdsc_open_export_target_session(struct ceph_mds_client *mdsc, int target) +{ + struct ceph_mds_session *session; + + dout("open_export_target_session to mds%d\n", target); + + mutex_lock(&mdsc->mutex); + session = __open_export_target_session(mdsc, target); + mutex_unlock(&mdsc->mutex); + + return session; +} + static void __open_export_target_sessions(struct ceph_mds_client *mdsc, struct ceph_mds_session *session) { struct ceph_mds_info *mi; struct ceph_mds_session *ts; int i, mds = session->s_mds; - int target; if (mds >= mdsc->mdsmap->m_max_mds) return; + mi = &mdsc->mdsmap->m_info[mds]; dout("open_export_target_sessions for mds%d (%d targets)\n", session->s_mds, mi->num_export_targets); for (i = 0; i < mi->num_export_targets; i++) { - target = mi->export_targets[i]; - ts = __ceph_lookup_mds_session(mdsc, target); - if (!ts) { - ts = register_session(mdsc, target); - if (IS_ERR(ts)) - return; - } - if (session->s_state == CEPH_MDS_SESSION_NEW || - session->s_state == CEPH_MDS_SESSION_CLOSING) - __open_session(mdsc, session); - else - dout(" mds%d target mds%d %p is %s\n", session->s_mds, - i, ts, session_state_name(ts->s_state)); - ceph_put_mds_session(ts); + ts = __open_export_target_session(mdsc, mi->export_targets[i]); + if (!IS_ERR(ts)) + ceph_put_mds_session(ts); } } @@ -1136,6 +1158,21 @@ static int send_renew_caps(struct ceph_mds_client *mdsc, return 0; } +static int send_flushmsg_ack(struct ceph_mds_client *mdsc, + struct ceph_mds_session *session, u64 seq) +{ + struct ceph_msg *msg; + + dout("send_flushmsg_ack to mds%d (%s)s seq %lld\n", + session->s_mds, session_state_name(session->s_state), seq); + msg = create_session_msg(CEPH_SESSION_FLUSHMSG_ACK, seq); + if (!msg) + return -ENOMEM; + ceph_con_send(&session->s_con, msg); + return 0; +} + + /* * Note new cap ttl, and any transition from stale -> not stale (fresh?). * @@ -1214,7 +1251,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg) { struct ceph_mds_session *session = arg; struct ceph_inode_info *ci = ceph_inode(inode); - int used, oissued, mine; + int used, wanted, oissued, mine; if (session->s_trim_caps <= 0) return -1; @@ -1222,14 +1259,19 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg) spin_lock(&ci->i_ceph_lock); mine = cap->issued | cap->implemented; used = __ceph_caps_used(ci); + wanted = __ceph_caps_file_wanted(ci); oissued = __ceph_caps_issued_other(ci, cap); - dout("trim_caps_cb %p cap %p mine %s oissued %s used %s\n", + dout("trim_caps_cb %p cap %p mine %s oissued %s used %s wanted %s\n", inode, cap, ceph_cap_string(mine), ceph_cap_string(oissued), - ceph_cap_string(used)); - if (ci->i_dirty_caps) - goto out; /* dirty caps */ - if ((used & ~oissued) & mine) + ceph_cap_string(used), ceph_cap_string(wanted)); + if (cap == ci->i_auth_cap) { + if (ci->i_dirty_caps | ci->i_flushing_caps) + goto out; + if ((used | wanted) & CEPH_CAP_ANY_WR) + goto out; + } + if ((used | wanted) & ~oissued & mine) goto out; /* we need these caps */ session->s_trim_caps--; @@ -2156,26 +2198,16 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) */ if (result == -ESTALE) { dout("got ESTALE on request %llu", req->r_tid); - if (!req->r_inode) { - /* do nothing; not an authority problem */ - } else if (req->r_direct_mode != USE_AUTH_MDS) { + if (req->r_direct_mode != USE_AUTH_MDS) { dout("not using auth, setting for that now"); req->r_direct_mode = USE_AUTH_MDS; __do_request(mdsc, req); mutex_unlock(&mdsc->mutex); goto out; } else { - struct ceph_inode_info *ci = ceph_inode(req->r_inode); - struct ceph_cap *cap = NULL; - - if (req->r_session) - cap = ceph_get_cap_for_mds(ci, - req->r_session->s_mds); - - dout("already using auth"); - if ((!cap || cap != ci->i_auth_cap) || - (cap->mseq != req->r_sent_on_mseq)) { - dout("but cap changed, so resending"); + int mds = __choose_mds(mdsc, req); + if (mds >= 0 && mds != req->r_session->s_mds) { + dout("but auth changed, so resending"); __do_request(mdsc, req); mutex_unlock(&mdsc->mutex); goto out; @@ -2400,6 +2432,10 @@ static void handle_session(struct ceph_mds_session *session, trim_caps(mdsc, session, le32_to_cpu(h->max_caps)); break; + case CEPH_SESSION_FLUSHMSG: + send_flushmsg_ack(mdsc, session, seq); + break; + default: pr_err("mdsc_handle_session bad op %d mds%d\n", op, mds); WARN_ON(1); |