Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph fixes from Sage Weil: "Two of Alex's patches deal with a race when reseting server connections for open RBD images, one demotes some non-fatal BUGs to WARNs, and my patch fixes a protocol feature bit failure path." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: fix protocol feature mismatch failure path libceph: WARN, don't BUG on unexpected connection states libceph: always reset osds when kicking libceph: move linger requests sooner in kick_requests()
This commit is contained in:
Linus Torvalds
Коммит
58890c0669
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@ -506,6 +506,7 @@ static void reset_connection(struct ceph_connection *con)
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{
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/* reset connection, out_queue, msg_ and connect_seq */
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/* discard existing out_queue and msg_seq */
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dout("reset_connection %p\n", con);
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ceph_msg_remove_list(&con->out_queue);
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ceph_msg_remove_list(&con->out_sent);
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@ -561,7 +562,7 @@ void ceph_con_open(struct ceph_connection *con,
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mutex_lock(&con->mutex);
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dout("con_open %p %s\n", con, ceph_pr_addr(&addr->in_addr));
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BUG_ON(con->state != CON_STATE_CLOSED);
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WARN_ON(con->state != CON_STATE_CLOSED);
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con->state = CON_STATE_PREOPEN;
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con->peer_name.type = (__u8) entity_type;
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@ -1506,13 +1507,6 @@ static int process_banner(struct ceph_connection *con)
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return 0;
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}
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static void fail_protocol(struct ceph_connection *con)
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{
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reset_connection(con);
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BUG_ON(con->state != CON_STATE_NEGOTIATING);
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con->state = CON_STATE_CLOSED;
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}
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static int process_connect(struct ceph_connection *con)
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{
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u64 sup_feat = con->msgr->supported_features;
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@ -1530,7 +1524,7 @@ static int process_connect(struct ceph_connection *con)
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ceph_pr_addr(&con->peer_addr.in_addr),
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sup_feat, server_feat, server_feat & ~sup_feat);
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con->error_msg = "missing required protocol features";
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fail_protocol(con);
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reset_connection(con);
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return -1;
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case CEPH_MSGR_TAG_BADPROTOVER:
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@ -1541,7 +1535,7 @@ static int process_connect(struct ceph_connection *con)
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le32_to_cpu(con->out_connect.protocol_version),
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le32_to_cpu(con->in_reply.protocol_version));
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con->error_msg = "protocol version mismatch";
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fail_protocol(con);
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reset_connection(con);
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return -1;
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case CEPH_MSGR_TAG_BADAUTHORIZER:
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@ -1631,11 +1625,11 @@ static int process_connect(struct ceph_connection *con)
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ceph_pr_addr(&con->peer_addr.in_addr),
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req_feat, server_feat, req_feat & ~server_feat);
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con->error_msg = "missing required protocol features";
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fail_protocol(con);
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reset_connection(con);
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return -1;
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}
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BUG_ON(con->state != CON_STATE_NEGOTIATING);
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WARN_ON(con->state != CON_STATE_NEGOTIATING);
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con->state = CON_STATE_OPEN;
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con->peer_global_seq = le32_to_cpu(con->in_reply.global_seq);
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@ -2132,7 +2126,6 @@ more:
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if (ret < 0)
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goto out;
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BUG_ON(con->state != CON_STATE_CONNECTING);
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con->state = CON_STATE_NEGOTIATING;
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/*
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@ -2160,7 +2153,7 @@ more:
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goto more;
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}
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BUG_ON(con->state != CON_STATE_OPEN);
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WARN_ON(con->state != CON_STATE_OPEN);
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if (con->in_base_pos < 0) {
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/*
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@ -2382,7 +2375,7 @@ static void ceph_fault(struct ceph_connection *con)
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dout("fault %p state %lu to peer %s\n",
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con, con->state, ceph_pr_addr(&con->peer_addr.in_addr));
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BUG_ON(con->state != CON_STATE_CONNECTING &&
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WARN_ON(con->state != CON_STATE_CONNECTING &&
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con->state != CON_STATE_NEGOTIATING &&
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con->state != CON_STATE_OPEN);
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@ -1270,7 +1270,7 @@ static void reset_changed_osds(struct ceph_osd_client *osdc)
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* Requeue requests whose mapping to an OSD has changed. If requests map to
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* no osd, request a new map.
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*
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* Caller should hold map_sem for read and request_mutex.
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* Caller should hold map_sem for read.
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*/
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static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
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{
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@ -1284,6 +1284,24 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
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for (p = rb_first(&osdc->requests); p; ) {
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req = rb_entry(p, struct ceph_osd_request, r_node);
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p = rb_next(p);
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/*
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* For linger requests that have not yet been
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* registered, move them to the linger list; they'll
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* be sent to the osd in the loop below. Unregister
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* the request before re-registering it as a linger
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* request to ensure the __map_request() below
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* will decide it needs to be sent.
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*/
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if (req->r_linger && list_empty(&req->r_linger_item)) {
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dout("%p tid %llu restart on osd%d\n",
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req, req->r_tid,
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req->r_osd ? req->r_osd->o_osd : -1);
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__unregister_request(osdc, req);
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__register_linger_request(osdc, req);
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continue;
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}
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err = __map_request(osdc, req, force_resend);
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if (err < 0)
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continue; /* error */
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@ -1298,17 +1316,6 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
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req->r_flags |= CEPH_OSD_FLAG_RETRY;
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}
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}
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if (req->r_linger && list_empty(&req->r_linger_item)) {
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/*
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* register as a linger so that we will
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* re-submit below and get a new tid
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*/
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dout("%p tid %llu restart on osd%d\n",
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req, req->r_tid,
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req->r_osd ? req->r_osd->o_osd : -1);
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__register_linger_request(osdc, req);
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__unregister_request(osdc, req);
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}
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}
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list_for_each_entry_safe(req, nreq, &osdc->req_linger,
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@ -1316,6 +1323,7 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
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dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
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err = __map_request(osdc, req, force_resend);
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dout("__map_request returned %d\n", err);
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if (err == 0)
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continue; /* no change and no osd was specified */
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if (err < 0)
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@ -1337,6 +1345,7 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
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dout("%d requests for down osds, need new map\n", needmap);
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ceph_monc_request_next_osdmap(&osdc->client->monc);
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}
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reset_changed_osds(osdc);
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}
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@ -1393,7 +1402,6 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
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osdc->osdmap = newmap;
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}
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kick_requests(osdc, 0);
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reset_changed_osds(osdc);
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} else {
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dout("ignoring incremental map %u len %d\n",
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epoch, maplen);
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