/* Copyright (c) 2012-2012 Red Hat, Inc. This file is part of GlusterFS. This file is licensed to you under your choice of the GNU Lesser General Public License, version 3 or any later version (LGPLv3 or later), or the GNU General Public License, version 2 (GPLv2), in all cases as published by the Free Software Foundation. */ /* rpc related syncops */ #include "rpc-clnt.h" #include "protocol-common.h" #include "xdr-generic.h" #include "glusterd1-xdr.h" #include "glusterd-syncop.h" #include "glusterd-mgmt.h" #include "glusterd.h" #include "glusterd-op-sm.h" #include "glusterd-utils.h" #include "glusterd-server-quorum.h" #include "glusterd-locks.h" #include "glusterd-snapshot-utils.h" #include "glusterd-messages.h" extern glusterd_op_info_t opinfo; void gd_synctask_barrier_wait (struct syncargs *args, int count) { glusterd_conf_t *conf = THIS->private; synclock_unlock (&conf->big_lock); synctask_barrier_wait (args, count); synclock_lock (&conf->big_lock); syncbarrier_destroy (&args->barrier); } static void gd_collate_errors (struct syncargs *args, int op_ret, int op_errno, char *op_errstr, int op_code, uuid_t peerid, u_char *uuid) { char err_str[PATH_MAX] = "Please check log file for details."; char op_err[PATH_MAX] = ""; int len = -1; char *peer_str = NULL; glusterd_peerinfo_t *peerinfo = NULL; if (op_ret) { args->op_ret = op_ret; args->op_errno = op_errno; rcu_read_lock (); peerinfo = glusterd_peerinfo_find (peerid, NULL); if (peerinfo) peer_str = gf_strdup (peerinfo->hostname); else peer_str = gf_strdup (uuid_utoa (uuid)); rcu_read_unlock (); if (op_errstr && strcmp (op_errstr, "")) { len = snprintf (err_str, sizeof(err_str) - 1, "Error: %s", op_errstr); err_str[len] = '\0'; } switch (op_code){ case GLUSTERD_MGMT_CLUSTER_LOCK : { len = snprintf (op_err, sizeof(op_err) - 1, "Locking failed on %s. %s", peer_str, err_str); break; } case GLUSTERD_MGMT_CLUSTER_UNLOCK : { len = snprintf (op_err, sizeof(op_err) - 1, "Unlocking failed on %s. %s", peer_str, err_str); break; } case GLUSTERD_MGMT_STAGE_OP : { len = snprintf (op_err, sizeof(op_err) - 1, "Staging failed on %s. %s", peer_str, err_str); break; } case GLUSTERD_MGMT_COMMIT_OP : { len = snprintf (op_err, sizeof(op_err) - 1, "Commit failed on %s. %s", peer_str, err_str); break; } } op_err[len] = '\0'; if (args->errstr) { len = snprintf (err_str, sizeof(err_str) - 1, "%s\n%s", args->errstr, op_err); GF_FREE (args->errstr); args->errstr = NULL; } else len = snprintf (err_str, sizeof(err_str) - 1, "%s", op_err); err_str[len] = '\0'; gf_log ("", GF_LOG_ERROR, "%s", op_err); args->errstr = gf_strdup (err_str); } GF_FREE (peer_str); return; } void gd_syncargs_init (struct syncargs *args, dict_t *op_ctx) { args->dict = op_ctx; pthread_mutex_init (&args->lock_dict, NULL); } static void gd_stage_op_req_free (gd1_mgmt_stage_op_req *req) { if (!req) return; GF_FREE (req->buf.buf_val); GF_FREE (req); } static void gd_commit_op_req_free (gd1_mgmt_commit_op_req *req) { if (!req) return; GF_FREE (req->buf.buf_val); GF_FREE (req); } static void gd_brick_op_req_free (gd1_mgmt_brick_op_req *req) { if (!req) return; if (strcmp (req->name, "") != 0) GF_FREE (req->name); GF_FREE (req->input.input_val); GF_FREE (req); } int gd_syncop_submit_request (struct rpc_clnt *rpc, void *req, void *local, void *cookie, rpc_clnt_prog_t *prog, int procnum, fop_cbk_fn_t cbkfn, xdrproc_t xdrproc) { int ret = -1; struct iobuf *iobuf = NULL; struct iobref *iobref = NULL; int count = 0; struct iovec iov = {0, }; ssize_t req_size = 0; call_frame_t *frame = NULL; GF_ASSERT (rpc); if (!req) goto out; req_size = xdr_sizeof (xdrproc, req); iobuf = iobuf_get2 (rpc->ctx->iobuf_pool, req_size); if (!iobuf) goto out; iobref = iobref_new (); if (!iobref) goto out; frame = create_frame (THIS, THIS->ctx->pool); if (!frame) goto out; iobref_add (iobref, iobuf); iov.iov_base = iobuf->ptr; iov.iov_len = iobuf_pagesize (iobuf); /* Create the xdr payload */ ret = xdr_serialize_generic (iov, req, xdrproc); if (ret == -1) goto out; iov.iov_len = ret; count = 1; frame->local = local; frame->cookie = cookie; /* Send the msg */ ret = rpc_clnt_submit (rpc, prog, procnum, cbkfn, &iov, count, NULL, 0, iobref, frame, NULL, 0, NULL, 0, NULL); /* TODO: do we need to start ping also? */ out: iobref_unref (iobref); iobuf_unref (iobuf); return ret; } /* Defined in glusterd-rpc-ops.c */ extern struct rpc_clnt_program gd_mgmt_prog; extern struct rpc_clnt_program gd_brick_prog; extern struct rpc_clnt_program gd_mgmt_v3_prog; int glusterd_syncop_aggr_rsp_dict (glusterd_op_t op, dict_t *aggr, dict_t *rsp) { int ret = 0; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); switch (op) { case GD_OP_CREATE_VOLUME: case GD_OP_ADD_BRICK: case GD_OP_START_VOLUME: ret = glusterd_aggr_brick_mount_dirs (aggr, rsp); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to " "aggregate brick mount dirs"); goto out; } break; case GD_OP_REPLACE_BRICK: ret = glusterd_rb_use_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_SYNC_VOLUME: ret = glusterd_sync_use_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_PROFILE_VOLUME: ret = glusterd_profile_volume_use_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_GSYNC_CREATE: break; case GD_OP_GSYNC_SET: ret = glusterd_gsync_use_rsp_dict (aggr, rsp, NULL); if (ret) goto out; break; case GD_OP_STATUS_VOLUME: ret = glusterd_volume_status_copy_to_op_ctx_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_REBALANCE: case GD_OP_DEFRAG_BRICK_VOLUME: ret = glusterd_volume_rebalance_use_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_HEAL_VOLUME: ret = glusterd_volume_heal_use_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_CLEARLOCKS_VOLUME: ret = glusterd_use_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_QUOTA: ret = glusterd_volume_quota_copy_to_op_ctx_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_SYS_EXEC: ret = glusterd_sys_exec_output_rsp_dict (aggr, rsp); if (ret) goto out; break; case GD_OP_SNAP: ret = glusterd_snap_use_rsp_dict (aggr, rsp); if (ret) goto out; break; default: break; } out: return ret; } int32_t gd_syncop_mgmt_v3_lock_cbk_fn (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { int ret = -1; struct syncargs *args = NULL; glusterd_peerinfo_t *peerinfo = NULL; gd1_mgmt_v3_lock_rsp rsp = {{0},}; call_frame_t *frame = NULL; int op_ret = -1; int op_errno = -1; xlator_t *this = NULL; uuid_t *peerid = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT(req); GF_ASSERT(myframe); frame = myframe; args = frame->local; peerid = frame->cookie; frame->local = NULL; frame->cookie = NULL; if (-1 == req->rpc_status) { op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_v3_lock_rsp); if (ret < 0) goto out; gf_uuid_copy (args->uuid, rsp.uuid); op_ret = rsp.op_ret; op_errno = rsp.op_errno; out: gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL, GLUSTERD_MGMT_V3_LOCK, *peerid, rsp.uuid); STACK_DESTROY (frame->root); synctask_barrier_wake(args); return 0; } int32_t gd_syncop_mgmt_v3_lock_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, gd_syncop_mgmt_v3_lock_cbk_fn); } int gd_syncop_mgmt_v3_lock (glusterd_op_t op, dict_t *op_ctx, glusterd_peerinfo_t *peerinfo, struct syncargs *args, uuid_t my_uuid, uuid_t recv_uuid, uuid_t txn_id) { int ret = -1; gd1_mgmt_v3_lock_req req = {{0},}; glusterd_conf_t *conf = THIS->private; uuid_t peerid = {0,}; GF_ASSERT(op_ctx); GF_ASSERT(peerinfo); GF_ASSERT(args); ret = dict_allocate_and_serialize (op_ctx, &req.dict.dict_val, &req.dict.dict_len); if (ret) goto out; gf_uuid_copy (req.uuid, my_uuid); gf_uuid_copy (req.txn_id, txn_id); req.op = op; gf_uuid_copy (peerid, peerinfo->uuid); ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, &peerid, &gd_mgmt_v3_prog, GLUSTERD_MGMT_V3_LOCK, gd_syncop_mgmt_v3_lock_cbk, (xdrproc_t) xdr_gd1_mgmt_v3_lock_req); out: gf_log ("", GF_LOG_DEBUG, "Returning %d", ret); return ret; } int32_t gd_syncop_mgmt_v3_unlock_cbk_fn (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { int ret = -1; struct syncargs *args = NULL; glusterd_peerinfo_t *peerinfo = NULL; gd1_mgmt_v3_unlock_rsp rsp = {{0},}; call_frame_t *frame = NULL; int op_ret = -1; int op_errno = -1; xlator_t *this = NULL; uuid_t *peerid = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT(req); GF_ASSERT(myframe); frame = myframe; args = frame->local; peerid = frame->cookie; frame->local = NULL; frame->cookie = NULL; if (-1 == req->rpc_status) { op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_v3_unlock_rsp); if (ret < 0) goto out; gf_uuid_copy (args->uuid, rsp.uuid); op_ret = rsp.op_ret; op_errno = rsp.op_errno; out: gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL, GLUSTERD_MGMT_V3_UNLOCK, *peerid, rsp.uuid); STACK_DESTROY (frame->root); synctask_barrier_wake(args); return 0; } int32_t gd_syncop_mgmt_v3_unlock_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, gd_syncop_mgmt_v3_unlock_cbk_fn); } int gd_syncop_mgmt_v3_unlock (dict_t *op_ctx, glusterd_peerinfo_t *peerinfo, struct syncargs *args, uuid_t my_uuid, uuid_t recv_uuid, uuid_t txn_id) { int ret = -1; gd1_mgmt_v3_unlock_req req = {{0},}; glusterd_conf_t *conf = THIS->private; uuid_t peerid = {0,}; GF_ASSERT(op_ctx); GF_ASSERT(peerinfo); GF_ASSERT(args); ret = dict_allocate_and_serialize (op_ctx, &req.dict.dict_val, &req.dict.dict_len); if (ret) goto out; gf_uuid_copy (req.uuid, my_uuid); gf_uuid_copy (req.txn_id, txn_id); gf_uuid_copy (peerid, peerinfo->uuid); ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, &peerid, &gd_mgmt_v3_prog, GLUSTERD_MGMT_V3_UNLOCK, gd_syncop_mgmt_v3_unlock_cbk, (xdrproc_t) xdr_gd1_mgmt_v3_unlock_req); out: gf_log ("", GF_LOG_DEBUG, "Returning %d", ret); return ret; } int32_t _gd_syncop_mgmt_lock_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { int ret = -1; struct syncargs *args = NULL; glusterd_peerinfo_t *peerinfo = NULL; gd1_mgmt_cluster_lock_rsp rsp = {{0},}; call_frame_t *frame = NULL; int op_ret = -1; int op_errno = -1; xlator_t *this = NULL; uuid_t *peerid = NULL; this = THIS; GF_ASSERT (this); frame = myframe; args = frame->local; peerid = frame->cookie; frame->local = NULL; frame->cookie = NULL; if (-1 == req->rpc_status) { op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_cluster_lock_rsp); if (ret < 0) goto out; gf_uuid_copy (args->uuid, rsp.uuid); rcu_read_lock (); peerinfo = glusterd_peerinfo_find (*peerid, NULL); if (peerinfo) { /* Set peer as locked, so we unlock only the locked peers */ if (rsp.op_ret == 0) peerinfo->locked = _gf_true; } else { rsp.op_ret = -1; gf_log (this->name, GF_LOG_ERROR, "Could not find peer with " "ID %s", uuid_utoa (*peerid)); } rcu_read_unlock (); op_ret = rsp.op_ret; op_errno = rsp.op_errno; out: gd_collate_errors (args, op_ret, op_errno, NULL, GLUSTERD_MGMT_CLUSTER_LOCK, *peerid, rsp.uuid); STACK_DESTROY (frame->root); synctask_barrier_wake(args); return 0; } int32_t gd_syncop_mgmt_lock_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, _gd_syncop_mgmt_lock_cbk); } int gd_syncop_mgmt_lock (glusterd_peerinfo_t *peerinfo, struct syncargs *args, uuid_t my_uuid, uuid_t recv_uuid) { int ret = -1; gd1_mgmt_cluster_lock_req req = {{0},}; glusterd_conf_t *conf = THIS->private; uuid_t peerid = {0,}; gf_uuid_copy (req.uuid, my_uuid); gf_uuid_copy (peerid, peerinfo->uuid); ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, &peerid, &gd_mgmt_prog, GLUSTERD_MGMT_CLUSTER_LOCK, gd_syncop_mgmt_lock_cbk, (xdrproc_t) xdr_gd1_mgmt_cluster_lock_req); return ret; } int32_t _gd_syncop_mgmt_unlock_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { int ret = -1; struct syncargs *args = NULL; glusterd_peerinfo_t *peerinfo = NULL; gd1_mgmt_cluster_unlock_rsp rsp = {{0},}; call_frame_t *frame = NULL; int op_ret = -1; int op_errno = -1; xlator_t *this = NULL; uuid_t *peerid = NULL; this = THIS; GF_ASSERT (this); frame = myframe; args = frame->local; peerid = frame->cookie; frame->local = NULL; frame->cookie = NULL; if (-1 == req->rpc_status) { op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_cluster_unlock_rsp); if (ret < 0) goto out; gf_uuid_copy (args->uuid, rsp.uuid); rcu_read_lock (); peerinfo = glusterd_peerinfo_find (*peerid, NULL); if (peerinfo) { peerinfo->locked = _gf_false; } else { rsp.op_ret = -1; gf_log (this->name, GF_LOG_ERROR, "Could not find peer with " "ID %s", uuid_utoa (*peerid)); } rcu_read_unlock (); op_ret = rsp.op_ret; op_errno = rsp.op_errno; out: gd_collate_errors (args, op_ret, op_errno, NULL, GLUSTERD_MGMT_CLUSTER_UNLOCK, *peerid, rsp.uuid); STACK_DESTROY (frame->root); synctask_barrier_wake(args); return 0; } int32_t gd_syncop_mgmt_unlock_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, _gd_syncop_mgmt_unlock_cbk); } int gd_syncop_mgmt_unlock (glusterd_peerinfo_t *peerinfo, struct syncargs *args, uuid_t my_uuid, uuid_t recv_uuid) { int ret = -1; gd1_mgmt_cluster_unlock_req req = {{0},}; glusterd_conf_t *conf = THIS->private; uuid_t peerid = {0,}; gf_uuid_copy (req.uuid, my_uuid); gf_uuid_copy (peerid, peerinfo->uuid); ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, &peerid, &gd_mgmt_prog, GLUSTERD_MGMT_CLUSTER_UNLOCK, gd_syncop_mgmt_unlock_cbk, (xdrproc_t) xdr_gd1_mgmt_cluster_lock_req); return ret; } int32_t _gd_syncop_stage_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { int ret = -1; gd1_mgmt_stage_op_rsp rsp = {{0},}; struct syncargs *args = NULL; xlator_t *this = NULL; dict_t *rsp_dict = NULL; call_frame_t *frame = NULL; int op_ret = -1; int op_errno = -1; uuid_t *peerid = NULL; this = THIS; GF_ASSERT (this); frame = myframe; args = frame->local; peerid = frame->cookie; frame->local = NULL; frame->cookie = NULL; if (-1 == req->rpc_status) { op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_stage_op_rsp); if (ret < 0) goto out; if (rsp.dict.dict_len) { /* Unserialize the dictionary */ rsp_dict = dict_new (); ret = dict_unserialize (rsp.dict.dict_val, rsp.dict.dict_len, &rsp_dict); if (ret < 0) { GF_FREE (rsp.dict.dict_val); goto out; } else { rsp_dict->extra_stdfree = rsp.dict.dict_val; } } rcu_read_lock (); ret = (glusterd_peerinfo_find (rsp.uuid, NULL) == NULL); rcu_read_unlock (); if (ret) { ret = -1; gf_log (this->name, GF_LOG_CRITICAL, "Staging response " "for 'Volume %s' received from unknown " "peer: %s", gd_op_list[rsp.op], uuid_utoa (rsp.uuid)); goto out; } gf_uuid_copy (args->uuid, rsp.uuid); if (rsp.op == GD_OP_REPLACE_BRICK || rsp.op == GD_OP_QUOTA || rsp.op == GD_OP_CREATE_VOLUME || rsp.op == GD_OP_ADD_BRICK || rsp.op == GD_OP_START_VOLUME) { pthread_mutex_lock (&args->lock_dict); { ret = glusterd_syncop_aggr_rsp_dict (rsp.op, args->dict, rsp_dict); if (ret) gf_log (this->name, GF_LOG_ERROR, "%s", "Failed to aggregate response from " " node/brick"); } pthread_mutex_unlock (&args->lock_dict); } op_ret = rsp.op_ret; op_errno = rsp.op_errno; out: gd_collate_errors (args, op_ret, op_errno, rsp.op_errstr, GLUSTERD_MGMT_STAGE_OP, *peerid, rsp.uuid); if (rsp_dict) dict_unref (rsp_dict); STACK_DESTROY (frame->root); synctask_barrier_wake(args); return 0; } int32_t gd_syncop_stage_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, _gd_syncop_stage_op_cbk); } int gd_syncop_mgmt_stage_op (glusterd_peerinfo_t *peerinfo, struct syncargs *args, uuid_t my_uuid, uuid_t recv_uuid, int op, dict_t *dict_out, dict_t *op_ctx) { gd1_mgmt_stage_op_req *req = NULL; glusterd_conf_t *conf = THIS->private; int ret = -1; uuid_t peerid = {0,}; req = GF_CALLOC (1, sizeof (*req), gf_gld_mt_mop_stage_req_t); if (!req) goto out; gf_uuid_copy (req->uuid, my_uuid); req->op = op; ret = dict_allocate_and_serialize (dict_out, &req->buf.buf_val, &req->buf.buf_len); if (ret) goto out; gf_uuid_copy (peerid, peerinfo->uuid); ret = gd_syncop_submit_request (peerinfo->rpc, req, args, &peerid, &gd_mgmt_prog, GLUSTERD_MGMT_STAGE_OP, gd_syncop_stage_op_cbk, (xdrproc_t) xdr_gd1_mgmt_stage_op_req); out: gd_stage_op_req_free (req); return ret; } int32_t _gd_syncop_brick_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { struct syncargs *args = NULL; gd1_mgmt_brick_op_rsp rsp = {0,}; int ret = -1; call_frame_t *frame = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); frame = myframe; args = frame->local; frame->local = NULL; /* initialize */ args->op_ret = -1; args->op_errno = EINVAL; if (-1 == req->rpc_status) { args->op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, args->op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_brick_op_rsp); if (ret < 0) goto out; if (rsp.output.output_len) { args->dict = dict_new (); if (!args->dict) { ret = -1; args->op_errno = ENOMEM; goto out; } ret = dict_unserialize (rsp.output.output_val, rsp.output.output_len, &args->dict); if (ret < 0) goto out; } args->op_ret = rsp.op_ret; args->op_errno = rsp.op_errno; args->errstr = gf_strdup (rsp.op_errstr); out: if ((rsp.op_errstr) && (strcmp (rsp.op_errstr, "") != 0)) free (rsp.op_errstr); free (rsp.output.output_val); STACK_DESTROY (frame->root); __wake (args); return 0; } int32_t gd_syncop_brick_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, _gd_syncop_brick_op_cbk); } int gd_syncop_mgmt_brick_op (struct rpc_clnt *rpc, glusterd_pending_node_t *pnode, int op, dict_t *dict_out, dict_t *op_ctx, char **errstr) { struct syncargs args = {0, }; gd1_mgmt_brick_op_req *req = NULL; int ret = 0; xlator_t *this = NULL; this = THIS; args.op_ret = -1; args.op_errno = ENOTCONN; if ((pnode->type == GD_NODE_NFS) || (pnode->type == GD_NODE_QUOTAD) || ((pnode->type == GD_NODE_SHD) && (op == GD_OP_STATUS_VOLUME))) { ret = glusterd_node_op_build_payload (op, &req, dict_out); } else { ret = glusterd_brick_op_build_payload (op, pnode->node, &req, dict_out); } if (ret) goto out; GD_SYNCOP (rpc, (&args), NULL, gd_syncop_brick_op_cbk, req, &gd_brick_prog, req->op, xdr_gd1_mgmt_brick_op_req); if (args.errstr) { if ((strlen(args.errstr) > 0) && errstr) *errstr = args.errstr; else GF_FREE (args.errstr); } if (GD_OP_STATUS_VOLUME == op) { ret = dict_set_int32 (args.dict, "index", pnode->index); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Error setting index on brick status" " rsp dict"); args.op_ret = -1; goto out; } } if (args.op_ret == 0) glusterd_handle_node_rsp (dict_out, pnode->node, op, args.dict, op_ctx, errstr, pnode->type); out: errno = args.op_errno; if (args.dict) dict_unref (args.dict); gd_brick_op_req_free (req); return args.op_ret; } int32_t _gd_syncop_commit_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { int ret = -1; gd1_mgmt_commit_op_rsp rsp = {{0},}; struct syncargs *args = NULL; xlator_t *this = NULL; dict_t *rsp_dict = NULL; call_frame_t *frame = NULL; int op_ret = -1; int op_errno = -1; int type = GF_QUOTA_OPTION_TYPE_NONE; uuid_t *peerid = NULL; this = THIS; GF_ASSERT (this); frame = myframe; args = frame->local; peerid = frame->cookie; frame->local = NULL; frame->cookie = NULL; if (-1 == req->rpc_status) { op_errno = ENOTCONN; goto out; } GF_VALIDATE_OR_GOTO_WITH_ERROR (this->name, iov, out, op_errno, EINVAL); ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gd1_mgmt_commit_op_rsp); if (ret < 0) { goto out; } if (rsp.dict.dict_len) { /* Unserialize the dictionary */ rsp_dict = dict_new (); ret = dict_unserialize (rsp.dict.dict_val, rsp.dict.dict_len, &rsp_dict); if (ret < 0) { GF_FREE (rsp.dict.dict_val); goto out; } else { rsp_dict->extra_stdfree = rsp.dict.dict_val; } } rcu_read_lock (); ret = (glusterd_peerinfo_find (rsp.uuid, NULL) == 0); rcu_read_unlock (); if (ret) { ret = -1; gf_log (this->name, GF_LOG_CRITICAL, "Commit response " "for 'Volume %s' received from unknown " "peer: %s", gd_op_list[rsp.op], uuid_utoa (rsp.uuid)); goto out; } gf_uuid_copy (args->uuid, rsp.uuid); if (rsp.op == GD_OP_QUOTA) { ret = dict_get_int32 (args->dict, "type", &type); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to get " "opcode"); goto out; } } if ((rsp.op != GD_OP_QUOTA) || (type == GF_QUOTA_OPTION_TYPE_LIST)) { pthread_mutex_lock (&args->lock_dict); { ret = glusterd_syncop_aggr_rsp_dict (rsp.op, args->dict, rsp_dict); if (ret) gf_log (this->name, GF_LOG_ERROR, "%s", "Failed to aggregate response from " " node/brick"); } pthread_mutex_unlock (&args->lock_dict); } op_ret = rsp.op_ret; op_errno = rsp.op_errno; out: gd_collate_errors (args, op_ret, op_errno, rsp.op_errstr, GLUSTERD_MGMT_COMMIT_OP, *peerid, rsp.uuid); if (rsp_dict) dict_unref (rsp_dict); STACK_DESTROY (frame->root); synctask_barrier_wake(args); return 0; } int32_t gd_syncop_commit_op_cbk (struct rpc_req *req, struct iovec *iov, int count, void *myframe) { return glusterd_big_locked_cbk (req, iov, count, myframe, _gd_syncop_commit_op_cbk); } int gd_syncop_mgmt_commit_op (glusterd_peerinfo_t *peerinfo, struct syncargs *args, uuid_t my_uuid, uuid_t recv_uuid, int op, dict_t *dict_out, dict_t *op_ctx) { glusterd_conf_t *conf = THIS->private; gd1_mgmt_commit_op_req *req = NULL; int ret = -1; uuid_t peerid = {0,}; req = GF_CALLOC (1, sizeof (*req), gf_gld_mt_mop_commit_req_t); if (!req) goto out; gf_uuid_copy (req->uuid, my_uuid); req->op = op; ret = dict_allocate_and_serialize (dict_out, &req->buf.buf_val, &req->buf.buf_len); if (ret) goto out; gf_uuid_copy (peerid, peerinfo->uuid); ret = gd_syncop_submit_request (peerinfo->rpc, req, args, &peerid, &gd_mgmt_prog, GLUSTERD_MGMT_COMMIT_OP, gd_syncop_commit_op_cbk, (xdrproc_t) xdr_gd1_mgmt_commit_op_req); out: gd_commit_op_req_free (req); return ret; } int gd_lock_op_phase (glusterd_conf_t *conf, glusterd_op_t op, dict_t *op_ctx, char **op_errstr, uuid_t txn_id, glusterd_op_info_t *txn_opinfo) { int ret = -1; int peer_cnt = 0; uuid_t peer_uuid = {0}; xlator_t *this = NULL; glusterd_peerinfo_t *peerinfo = NULL; struct syncargs args = {0}; this = THIS; synctask_barrier_init((&args)); peer_cnt = 0; rcu_read_lock (); cds_list_for_each_entry_rcu (peerinfo, &conf->peers, uuid_list) { /* Only send requests to peers who were available before the * transaction started */ if (peerinfo->generation > txn_opinfo->txn_generation) continue; if (!peerinfo->connected) continue; if (op != GD_OP_SYNC_VOLUME && peerinfo->state.state != GD_FRIEND_STATE_BEFRIENDED) continue; if (conf->op_version < GD_OP_VERSION_3_6_0) { /* Reset lock status */ peerinfo->locked = _gf_false; gd_syncop_mgmt_lock (peerinfo, &args, MY_UUID, peer_uuid); } else gd_syncop_mgmt_v3_lock (op, op_ctx, peerinfo, &args, MY_UUID, peer_uuid, txn_id); peer_cnt++; } rcu_read_unlock (); if (0 == peer_cnt) { ret = 0; goto out; } gd_synctask_barrier_wait((&args), peer_cnt); if (args.op_ret) { if (args.errstr) *op_errstr = gf_strdup (args.errstr); else { ret = gf_asprintf (op_errstr, "Another transaction " "could be in progress. Please try " "again after sometime."); if (ret == -1) *op_errstr = NULL; gf_log (this->name, GF_LOG_ERROR, "Failed to acquire lock"); } } ret = args.op_ret; gf_log (this->name, GF_LOG_DEBUG, "Sent lock op req for 'Volume %s' " "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret); out: return ret; } int gd_stage_op_phase (glusterd_op_t op, dict_t *op_ctx, dict_t *req_dict, char **op_errstr, glusterd_op_info_t *txn_opinfo) { int ret = -1; int peer_cnt = 0; dict_t *rsp_dict = NULL; char *hostname = NULL; xlator_t *this = NULL; glusterd_conf_t *conf = NULL; glusterd_peerinfo_t *peerinfo = NULL; uuid_t tmp_uuid = {0}; char *errstr = NULL; struct syncargs args = {0}; dict_t *aggr_dict = NULL; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); rsp_dict = dict_new (); if (!rsp_dict) goto out; if ((op == GD_OP_CREATE_VOLUME) || (op == GD_OP_ADD_BRICK) || (op == GD_OP_START_VOLUME)) aggr_dict = req_dict; else aggr_dict = op_ctx; ret = glusterd_validate_quorum (this, op, req_dict, op_errstr); if (ret) { gf_msg (this->name, GF_LOG_CRITICAL, 0, GD_MSG_SERVER_QUORUM_NOT_MET, "Server quorum not met. Rejecting operation."); goto out; } ret = glusterd_op_stage_validate (op, req_dict, op_errstr, rsp_dict); if (ret) { hostname = "localhost"; goto stage_done; } if ((op == GD_OP_REPLACE_BRICK || op == GD_OP_QUOTA || op == GD_OP_CREATE_VOLUME || op == GD_OP_ADD_BRICK || op == GD_OP_START_VOLUME)) { ret = glusterd_syncop_aggr_rsp_dict (op, aggr_dict, rsp_dict); if (ret) { gf_log (this->name, GF_LOG_ERROR, "%s", "Failed to aggregate response from node/brick"); goto out; } } dict_unref (rsp_dict); rsp_dict = NULL; stage_done: if (ret) { gf_log (this->name, GF_LOG_ERROR, LOGSTR_STAGE_FAIL, gd_op_list[op], hostname, (*op_errstr) ? ":" : " ", (*op_errstr) ? *op_errstr : " "); if (*op_errstr == NULL) gf_asprintf (op_errstr, OPERRSTR_STAGE_FAIL, hostname); goto out; } gd_syncargs_init (&args, aggr_dict); synctask_barrier_init((&args)); peer_cnt = 0; rcu_read_lock (); cds_list_for_each_entry_rcu (peerinfo, &conf->peers, uuid_list) { /* Only send requests to peers who were available before the * transaction started */ if (peerinfo->generation > txn_opinfo->txn_generation) continue; if (!peerinfo->connected) continue; if (op != GD_OP_SYNC_VOLUME && peerinfo->state.state != GD_FRIEND_STATE_BEFRIENDED) continue; ret = gd_syncop_mgmt_stage_op (peerinfo, &args, MY_UUID, tmp_uuid, op, req_dict, op_ctx); peer_cnt++; } rcu_read_unlock (); if (0 == peer_cnt) { ret = 0; goto out; } gf_log (this->name, GF_LOG_DEBUG, "Sent stage op req for 'Volume %s' " "to %d peers", gd_op_list[op], peer_cnt); gd_synctask_barrier_wait((&args), peer_cnt); if (args.errstr) *op_errstr = gf_strdup (args.errstr); else if (dict_get_str (aggr_dict, "errstr", &errstr) == 0) *op_errstr = gf_strdup (errstr); ret = args.op_ret; out: if ((ret == 0) && (op == GD_OP_QUOTA)) { ret = glusterd_validate_and_set_gfid (op_ctx, req_dict, op_errstr); if (ret) gf_log (this->name, GF_LOG_ERROR, "Failed to validate and set gfid"); } if (rsp_dict) dict_unref (rsp_dict); return ret; } int gd_commit_op_phase (glusterd_op_t op, dict_t *op_ctx, dict_t *req_dict, char **op_errstr, glusterd_op_info_t *txn_opinfo) { dict_t *rsp_dict = NULL; int peer_cnt = -1; int ret = -1; char *hostname = NULL; glusterd_peerinfo_t *peerinfo = NULL; xlator_t *this = NULL; glusterd_conf_t *conf = NULL; uuid_t tmp_uuid = {0}; char *errstr = NULL; struct syncargs args = {0}; int type = GF_QUOTA_OPTION_TYPE_NONE; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); rsp_dict = dict_new (); if (!rsp_dict) { ret = -1; goto out; } ret = glusterd_op_commit_perform (op, req_dict, op_errstr, rsp_dict); if (ret) { hostname = "localhost"; goto commit_done; } if (op == GD_OP_QUOTA) { ret = dict_get_int32 (op_ctx, "type", &type); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to get " "opcode"); goto out; } } if (((op == GD_OP_QUOTA) && ((type == GF_QUOTA_OPTION_TYPE_LIST) || (type == GF_QUOTA_OPTION_TYPE_LIST_OBJECTS))) || ((op != GD_OP_SYNC_VOLUME) && (op != GD_OP_QUOTA))) { ret = glusterd_syncop_aggr_rsp_dict (op, op_ctx, rsp_dict); if (ret) { gf_log (this->name, GF_LOG_ERROR, "%s", "Failed to aggregate " "response from node/brick"); goto out; } } dict_unref (rsp_dict); rsp_dict = NULL; commit_done: if (ret) { gf_log (this->name, GF_LOG_ERROR, LOGSTR_COMMIT_FAIL, gd_op_list[op], hostname, (*op_errstr) ? ":" : " ", (*op_errstr) ? *op_errstr : " "); if (*op_errstr == NULL) gf_asprintf (op_errstr, OPERRSTR_COMMIT_FAIL, hostname); goto out; } gd_syncargs_init (&args, op_ctx); synctask_barrier_init((&args)); peer_cnt = 0; rcu_read_lock (); cds_list_for_each_entry_rcu (peerinfo, &conf->peers, uuid_list) { /* Only send requests to peers who were available before the * transaction started */ if (peerinfo->generation > txn_opinfo->txn_generation) continue; if (!peerinfo->connected) continue; if (op != GD_OP_SYNC_VOLUME && peerinfo->state.state != GD_FRIEND_STATE_BEFRIENDED) continue; ret = gd_syncop_mgmt_commit_op (peerinfo, &args, MY_UUID, tmp_uuid, op, req_dict, op_ctx); peer_cnt++; } rcu_read_unlock (); if (0 == peer_cnt) { ret = 0; goto out; } gd_synctask_barrier_wait((&args), peer_cnt); ret = args.op_ret; if (args.errstr) *op_errstr = gf_strdup (args.errstr); else if (dict_get_str (op_ctx, "errstr", &errstr) == 0) *op_errstr = gf_strdup (errstr); gf_log (this->name, GF_LOG_DEBUG, "Sent commit op req for 'Volume %s' " "to %d peers", gd_op_list[op], peer_cnt); out: if (!ret) glusterd_op_modify_op_ctx (op, op_ctx); if (rsp_dict) dict_unref (rsp_dict); GF_FREE (args.errstr); args.errstr = NULL; return ret; } int gd_unlock_op_phase (glusterd_conf_t *conf, glusterd_op_t op, int *op_ret, rpcsvc_request_t *req, dict_t *op_ctx, char *op_errstr, char *volname, gf_boolean_t is_acquired, uuid_t txn_id, glusterd_op_info_t *txn_opinfo) { glusterd_peerinfo_t *peerinfo = NULL; uuid_t tmp_uuid = {0}; int peer_cnt = 0; int ret = -1; xlator_t *this = NULL; struct syncargs args = {0}; this = THIS; GF_ASSERT (this); /* If the lock has not been held during this * transaction, do not send unlock requests */ if (!is_acquired) { ret = 0; goto out; } synctask_barrier_init((&args)); peer_cnt = 0; if (conf->op_version < GD_OP_VERSION_3_6_0) { rcu_read_lock (); cds_list_for_each_entry_rcu (peerinfo, &conf->peers, uuid_list) { /* Only send requests to peers who were available before * the transaction started */ if (peerinfo->generation > txn_opinfo->txn_generation) continue; if (!peerinfo->connected) continue; if (op != GD_OP_SYNC_VOLUME && peerinfo->state.state != GD_FRIEND_STATE_BEFRIENDED) continue; /* Only unlock peers that were locked */ if (peerinfo->locked) { gd_syncop_mgmt_unlock (peerinfo, &args, MY_UUID, tmp_uuid); peer_cnt++; } } rcu_read_unlock (); } else { if (volname) { rcu_read_lock (); cds_list_for_each_entry_rcu (peerinfo, &conf->peers, uuid_list) { /* Only send requests to peers who were * available before the transaction started */ if (peerinfo->generation > txn_opinfo->txn_generation) continue; if (!peerinfo->connected) continue; if (op != GD_OP_SYNC_VOLUME && peerinfo->state.state != GD_FRIEND_STATE_BEFRIENDED) continue; gd_syncop_mgmt_v3_unlock (op_ctx, peerinfo, &args, MY_UUID, tmp_uuid, txn_id); peer_cnt++; } rcu_read_unlock (); } } if (0 == peer_cnt) { ret = 0; goto out; } gd_synctask_barrier_wait((&args), peer_cnt); ret = args.op_ret; gf_log (this->name, GF_LOG_DEBUG, "Sent unlock op req for 'Volume %s' " "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to unlock " "on some peer(s)"); } out: /* If unlock failed, and op_ret was previously set * priority is given to the op_ret. If op_ret was * not set, and unlock failed, then set op_ret */ if (!*op_ret) *op_ret = ret; if (is_acquired) { /* Based on the op-version, * we release the cluster or mgmt_v3 lock * and clear the op */ glusterd_op_clear_op (op); if (conf->op_version < GD_OP_VERSION_3_6_0) glusterd_unlock (MY_UUID); else { if (volname) { ret = glusterd_mgmt_v3_unlock (volname, MY_UUID, "vol"); if (ret) gf_log (this->name, GF_LOG_ERROR, "Unable to release lock for %s", volname); } } } if (!*op_ret) *op_ret = ret; /* * If there are any quorum events while the OP is in progress, process * them. */ if (conf->pending_quorum_action) glusterd_do_quorum_action (); return 0; } int gd_get_brick_count (struct cds_list_head *bricks) { glusterd_pending_node_t *pending_node = NULL; int npeers = 0; cds_list_for_each_entry (pending_node, bricks, list) { npeers++; } return npeers; } int gd_brick_op_phase (glusterd_op_t op, dict_t *op_ctx, dict_t *req_dict, char **op_errstr) { glusterd_pending_node_t *pending_node = NULL; struct cds_list_head selected = {0,}; xlator_t *this = NULL; int brick_count = 0; int ret = -1; rpc_clnt_t *rpc = NULL; dict_t *rsp_dict = NULL; glusterd_conf_t *conf = NULL; int32_t cmd = GF_OP_CMD_NONE; this = THIS; conf = this->private; rsp_dict = dict_new (); if (!rsp_dict) { ret = -1; goto out; } CDS_INIT_LIST_HEAD (&selected); ret = glusterd_op_bricks_select (op, req_dict, op_errstr, &selected, rsp_dict); if (ret) { gf_log (this->name, GF_LOG_ERROR, "%s", (*op_errstr)? *op_errstr: "Brick op failed. Check " "glusterd log file for more details."); goto out; } if (op == GD_OP_HEAL_VOLUME) { ret = glusterd_syncop_aggr_rsp_dict (op, op_ctx, rsp_dict); if (ret) goto out; } dict_unref (rsp_dict); rsp_dict = NULL; brick_count = 0; cds_list_for_each_entry (pending_node, &selected, list) { rpc = glusterd_pending_node_get_rpc (pending_node); if (!rpc) { if (pending_node->type == GD_NODE_REBALANCE) { ret = 0; glusterd_defrag_volume_node_rsp (req_dict, NULL, op_ctx); goto out; } ret = -1; gf_log (this->name, GF_LOG_ERROR, "Brick Op failed " "due to rpc failure."); goto out; } /* Redirect operation to be detach tier via rebalance flow. */ ret = dict_get_int32 (req_dict, "command", &cmd); if (!ret) { if (cmd == GF_OP_CMD_DETACH_START) { op = GD_OP_REBALANCE; ret = dict_set_int32 (req_dict, "rebalance-command", GF_DEFRAG_CMD_START_DETACH_TIER); if (ret) goto out; } } ret = gd_syncop_mgmt_brick_op (rpc, pending_node, op, req_dict, op_ctx, op_errstr); if (cmd == GF_OP_CMD_DETACH_START) { op = GD_OP_REMOVE_BRICK; dict_del (req_dict, "rebalance-command"); } if (ret) goto out; brick_count++; } ret = 0; out: if (rsp_dict) dict_unref (rsp_dict); gf_log (this->name, GF_LOG_DEBUG, "Sent op req to %d bricks", brick_count); return ret; } void gd_sync_task_begin (dict_t *op_ctx, rpcsvc_request_t * req) { int ret = -1; int op_ret = -1; dict_t *req_dict = NULL; glusterd_conf_t *conf = NULL; glusterd_op_t op = 0; int32_t tmp_op = 0; char *op_errstr = NULL; char *tmp = NULL; char *volname = NULL; xlator_t *this = NULL; gf_boolean_t is_acquired = _gf_false; uuid_t *txn_id = NULL; glusterd_op_info_t txn_opinfo = {{0},}; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); ret = dict_get_int32 (op_ctx, GD_SYNC_OPCODE_KEY, &tmp_op); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to get volume " "operation"); goto out; } op = tmp_op; /* Generate a transaction-id for this operation and * save it in the dict */ ret = glusterd_generate_txn_id (op_ctx, &txn_id); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to generate transaction id"); goto out; } /* Save opinfo for this transaction with the transaction id */ glusterd_txn_opinfo_init (&txn_opinfo, NULL, &op, NULL, NULL); ret = glusterd_set_txn_opinfo (txn_id, &txn_opinfo); if (ret) gf_log (this->name, GF_LOG_ERROR, "Unable to set transaction's opinfo"); gf_log (this->name, GF_LOG_DEBUG, "Transaction ID : %s", uuid_utoa (*txn_id)); /* Save the MY_UUID as the originator_uuid */ ret = glusterd_set_originator_uuid (op_ctx); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to set originator_uuid."); goto out; } /* Based on the op_version, acquire a cluster or mgmt_v3 lock */ if (conf->op_version < GD_OP_VERSION_3_6_0) { ret = glusterd_lock (MY_UUID); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Unable to acquire lock"); gf_asprintf (&op_errstr, "Another transaction is in progress. " "Please try again after sometime."); goto out; } } else { /* If no volname is given as a part of the command, locks will * not be held */ ret = dict_get_str (op_ctx, "volname", &tmp); if (ret) { gf_log ("", GF_LOG_DEBUG, "Failed to get volume " "name"); goto local_locking_done; } else { /* Use a copy of volname, as cli response will be * sent before the unlock, and the volname in the * dict, might be removed */ volname = gf_strdup (tmp); if (!volname) goto out; } ret = glusterd_mgmt_v3_lock (volname, MY_UUID, "vol"); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Unable to acquire lock for %s", volname); gf_asprintf (&op_errstr, "Another transaction is in progress " "for %s. Please try again after sometime.", volname); goto out; } } is_acquired = _gf_true; local_locking_done: /* If no volname is given as a part of the command, locks will * not be held */ if (volname || (conf->op_version < GD_OP_VERSION_3_6_0)) { ret = gd_lock_op_phase (conf, op, op_ctx, &op_errstr, *txn_id, &txn_opinfo); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Locking Peers Failed."); goto out; } } ret = glusterd_op_build_payload (&req_dict, &op_errstr, op_ctx); if (ret) { gf_log (this->name, GF_LOG_ERROR, LOGSTR_BUILD_PAYLOAD, gd_op_list[op]); if (op_errstr == NULL) gf_asprintf (&op_errstr, OPERRSTR_BUILD_PAYLOAD); goto out; } ret = gd_stage_op_phase (op, op_ctx, req_dict, &op_errstr, &txn_opinfo); if (ret) goto out; ret = gd_brick_op_phase (op, op_ctx, req_dict, &op_errstr); if (ret) goto out; ret = gd_commit_op_phase (op, op_ctx, req_dict, &op_errstr, &txn_opinfo); if (ret) goto out; ret = 0; out: op_ret = ret; if (txn_id) { (void) gd_unlock_op_phase (conf, op, &op_ret, req, op_ctx, op_errstr, volname, is_acquired, *txn_id, &txn_opinfo); /* Clearing the transaction opinfo */ ret = glusterd_clear_txn_opinfo (txn_id); if (ret) gf_log (this->name, GF_LOG_ERROR, "Unable to clear transaction's " "opinfo for transaction ID : %s", uuid_utoa (*txn_id)); } glusterd_op_send_cli_response (op, op_ret, 0, req, op_ctx, op_errstr); if (volname) GF_FREE (volname); if (req_dict) dict_unref (req_dict); if (op_errstr) { GF_FREE (op_errstr); op_errstr = NULL; } return; } int32_t glusterd_op_begin_synctask (rpcsvc_request_t *req, glusterd_op_t op, void *dict) { int ret = 0; ret = dict_set_int32 (dict, GD_SYNC_OPCODE_KEY, op); if (ret) { gf_log (THIS->name, GF_LOG_ERROR, "dict set failed for setting operations"); goto out; } gd_sync_task_begin (dict, req); ret = 0; out: return ret; }