From 1fd6ad3cc85fcc07a47bb0af67a0af48349392a9 Mon Sep 17 00:00:00 2001 From: Krishnan Parthasarathi Date: Thu, 20 Oct 2011 12:51:44 +0530 Subject: glusterd: Removing delayed moving of op sm for stop vol/remove brick op. Earlier we would wait until brick disconnect or 5s whichever was earlier, before we move op sm from brick op stage to commit stage. This involves a race where both the above mentioned events can happen 'concurrently' and result in double free of the event context. Change-Id: Ia369994448e71a052679d2373b8ab9177d56a541 BUG: 3700 Reviewed-on: http://review.gluster.com/626 Tested-by: Gluster Build System Reviewed-by: Vijay Bellur --- xlators/mgmt/glusterd/src/glusterd-handler.c | 2 -- xlators/mgmt/glusterd/src/glusterd-op-sm.c | 22 ---------------- xlators/mgmt/glusterd/src/glusterd-op-sm.h | 1 - xlators/mgmt/glusterd/src/glusterd-rpc-ops.c | 39 +++------------------------- 4 files changed, 4 insertions(+), 60 deletions(-) diff --git a/xlators/mgmt/glusterd/src/glusterd-handler.c b/xlators/mgmt/glusterd/src/glusterd-handler.c index 552998ad058..f072a70047e 100644 --- a/xlators/mgmt/glusterd/src/glusterd-handler.c +++ b/xlators/mgmt/glusterd/src/glusterd-handler.c @@ -3818,8 +3818,6 @@ glusterd_brick_rpc_notify (struct rpc_clnt *rpc, void *mydata, case RPC_CLNT_DISCONNECT: gf_log (this->name, GF_LOG_DEBUG, "got RPC_CLNT_DISCONNECT"); glusterd_set_brick_status (brickinfo, GF_BRICK_STOPPED); - if (brickinfo->timer && brickinfo->timer->callbk) - brickinfo->timer->callbk (brickinfo->timer->data); break; default: diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c index 4dab7a65309..9db4c2c1949 100644 --- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c +++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c @@ -6630,28 +6630,6 @@ out: return ret; } -void -glusterd_op_brick_disconnect (void *data) -{ - glusterd_brickinfo_t *brickinfo = NULL; - glusterd_op_brick_rsp_ctx_t *ev_ctx = NULL; - - ev_ctx = data; - GF_ASSERT (ev_ctx); - brickinfo = ev_ctx->brickinfo; - GF_ASSERT (brickinfo); - - if (brickinfo->timer) { - gf_timer_call_cancel (THIS->ctx, brickinfo->timer); - brickinfo->timer = NULL; - gf_log ("", GF_LOG_DEBUG, - "Cancelled timer thread"); - } - - glusterd_op_sm_inject_event (GD_OP_EVENT_RCVD_ACC, ev_ctx); - glusterd_op_sm (); -} - void glusterd_do_replace_brick (void *data) { diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.h b/xlators/mgmt/glusterd/src/glusterd-op-sm.h index 0830f9a1669..a929fe805a6 100644 --- a/xlators/mgmt/glusterd/src/glusterd-op-sm.h +++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.h @@ -275,7 +275,6 @@ int32_t glusterd_handle_brick_rsp (glusterd_brickinfo_t *brickinfo, glusterd_op_t op, dict_t *rsp_dict, dict_t *ctx_dict, char **op_errstr); -void glusterd_op_brick_disconnect (void *data); int32_t glusterd_op_init_ctx (glusterd_op_t op); int32_t diff --git a/xlators/mgmt/glusterd/src/glusterd-rpc-ops.c b/xlators/mgmt/glusterd/src/glusterd-rpc-ops.c index faba229b4c4..dad6d513c74 100644 --- a/xlators/mgmt/glusterd/src/glusterd-rpc-ops.c +++ b/xlators/mgmt/glusterd/src/glusterd-rpc-ops.c @@ -1693,30 +1693,6 @@ out: return ret; } -int32_t -glusterd_start_brick_disconnect_timer (glusterd_op_brick_rsp_ctx_t *ev_ctx) -{ - struct timeval timeout = {0, }; - int32_t ret = -1; - xlator_t *this = NULL; - glusterd_brickinfo_t *brickinfo = NULL; - - timeout.tv_sec = 5; - timeout.tv_usec = 0; - brickinfo = ev_ctx->brickinfo; - GF_ASSERT (brickinfo); - this = THIS; - GF_ASSERT (this); - - brickinfo->timer = gf_timer_call_after (this->ctx, timeout, - glusterd_op_brick_disconnect, - (void *) ev_ctx); - - ret = 0; - - return ret; -} - int32_t glusterd3_1_brick_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) @@ -1727,7 +1703,6 @@ glusterd3_1_brick_op_cbk (struct rpc_req *req, struct iovec *iov, glusterd_op_sm_event_type_t event_type = GD_OP_EVENT_NONE; call_frame_t *frame = NULL; glusterd_op_brick_rsp_ctx_t *ev_ctx = NULL; - int32_t op = -1; dict_t *dict = NULL; GF_ASSERT (req); @@ -1784,16 +1759,10 @@ out: ev_ctx->brickinfo = frame->cookie; ev_ctx->rsp_dict = dict; ev_ctx->commit_ctx = frame->local; - op = glusterd_op_get_op (); - if ((op == GD_OP_STOP_VOLUME) || - (op == GD_OP_REMOVE_BRICK)) { - ret = glusterd_start_brick_disconnect_timer (ev_ctx); - } else { - ret = glusterd_op_sm_inject_event (event_type, ev_ctx); - if (!ret) { - glusterd_friend_sm (); - glusterd_op_sm (); - } + ret = glusterd_op_sm_inject_event (event_type, ev_ctx); + if (!ret) { + glusterd_friend_sm (); + glusterd_op_sm (); } if (ret && dict) -- cgit