A new command merges multiple snapshot/clone layers into one of them, so merged layers can be deleted after this procedurenbd-vmsplice
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// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 (see README.md for details)
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/**
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* CLI tool |
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* Currently can (a) remove inodes and (b) merge snapshot/clone layers |
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*/ |
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#include <vector> |
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#include <algorithm> |
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#include "cpp-btree/safe_btree_set.h" |
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#include "epoll_manager.h" |
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#include "cluster_client.h" |
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#include "pg_states.h" |
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#define RM_LISTING 1 |
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#define RM_REMOVING 2 |
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#define RM_END 3 |
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const char *exe_name = NULL; |
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struct rm_pg_t |
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{ |
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pg_num_t pg_num; |
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osd_num_t rm_osd_num; |
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std::set<object_id> objects; |
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std::set<object_id>::iterator obj_pos; |
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uint64_t obj_count = 0, obj_done = 0, obj_prev_done = 0; |
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int state = 0; |
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int in_flight = 0; |
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}; |
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struct rm_inode_t; |
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struct snap_merger_t; |
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class cli_tool_t |
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{ |
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protected: |
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uint64_t iodepth = 0, parallel_osds = 0; |
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bool progress = true; |
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bool list_first = false; |
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int log_level = 0; |
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int mode = 0; |
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ring_loop_t *ringloop = NULL; |
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epoll_manager_t *epmgr = NULL; |
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cluster_client_t *cli = NULL; |
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ring_consumer_t consumer; |
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bool started = false; |
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rm_inode_t *remover = NULL; |
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snap_merger_t *merger = NULL; |
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public: |
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static json11::Json::object parse_args(int narg, const char *args[]) |
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{ |
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json11::Json::object cfg; |
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json11::Json::array cmd; |
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cfg["progress"] = "1"; |
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for (int i = 1; i < narg; i++) |
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{ |
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if (!strcmp(args[i], "-h") || !strcmp(args[i], "--help")) |
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{ |
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help(); |
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} |
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else if (args[i][0] == '-' && args[i][1] == '-') |
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{ |
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const char *opt = args[i]+2; |
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cfg[opt] = !strcmp(opt, "json") || !strcmp(opt, "wait-list") || i == narg-1 ? "1" : args[++i]; |
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} |
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else |
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{ |
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cmd.push_back(std::string(args[i])); |
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} |
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} |
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if (!cmd.size()) |
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{ |
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std::string exe(exe_name); |
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if (exe.substr(exe.size()-11) == "vitastor-rm") |
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{ |
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cmd.push_back("rm"); |
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} |
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} |
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cfg["command"] = cmd; |
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return cfg; |
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} |
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static void help() |
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{ |
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printf( |
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"Vitastor inode removal tool\n" |
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"(c) Vitaliy Filippov, 2020 (VNPL-1.1)\n\n" |
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"USAGE:\n" |
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" %s rm [--etcd_address <etcd_address>] --pool <pool> --inode <inode>\n" |
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" [--wait-list] [--iodepth 32] [--parallel_osds 4] [--progress 1]\n" |
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" %s merge [--etcd_address <etcd_address>] <from> <to> [--target <name>]\n" |
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" [--iodepth 128] [--progress 1]\n", |
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exe_name, exe_name |
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); |
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exit(0); |
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} |
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void run(json11::Json cfg); |
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void start_work(); |
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void continue_work(); |
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friend struct rm_inode_t; |
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friend struct snap_merger_t; |
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}; |
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struct rm_inode_t |
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{ |
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uint64_t inode = 0; |
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pool_id_t pool_id = 0; |
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cli_tool_t *parent = NULL; |
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inode_list_t *lister = NULL; |
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std::vector<rm_pg_t*> lists; |
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uint64_t total_count = 0, total_done = 0, total_prev_pct = 0; |
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uint64_t pgs_to_list = 0; |
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bool lists_done = false; |
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void start_delete() |
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{ |
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lister = parent->cli->list_inode_start(inode, [this](inode_list_t *lst, std::set<object_id>&& objects, pg_num_t pg_num, osd_num_t primary_osd, int status) |
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{ |
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rm_pg_t *rm = new rm_pg_t({ |
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.pg_num = pg_num, |
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.rm_osd_num = primary_osd, |
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.objects = objects, |
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.obj_count = objects.size(), |
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.obj_done = 0, |
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.obj_prev_done = 0, |
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}); |
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rm->obj_pos = rm->objects.begin(); |
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lists.push_back(rm); |
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if (parent->list_first) |
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{ |
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parent->cli->list_inode_next(lister, 1); |
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} |
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if (status & INODE_LIST_DONE) |
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{ |
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lists_done = true; |
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} |
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pgs_to_list--; |
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continue_delete(); |
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}); |
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if (!lister) |
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{ |
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fprintf(stderr, "Failed to list inode %lx objects\n", inode); |
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exit(1); |
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} |
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pgs_to_list = parent->cli->list_pg_count(lister); |
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parent->cli->list_inode_next(lister, parent->parallel_osds); |
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} |
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void send_ops(rm_pg_t *cur_list) |
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{ |
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if (parent->cli->msgr.osd_peer_fds.find(cur_list->rm_osd_num) == |
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parent->cli->msgr.osd_peer_fds.end()) |
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{ |
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// Initiate connection
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parent->cli->msgr.connect_peer(cur_list->rm_osd_num, parent->cli->st_cli.peer_states[cur_list->rm_osd_num]); |
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return; |
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} |
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while (cur_list->in_flight < parent->iodepth && cur_list->obj_pos != cur_list->objects.end()) |
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{ |
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osd_op_t *op = new osd_op_t(); |
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op->op_type = OSD_OP_OUT; |
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op->peer_fd = parent->cli->msgr.osd_peer_fds[cur_list->rm_osd_num]; |
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op->req = (osd_any_op_t){ |
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.rw = { |
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.header = { |
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.magic = SECONDARY_OSD_OP_MAGIC, |
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.id = parent->cli->next_op_id(), |
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.opcode = OSD_OP_DELETE, |
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}, |
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.inode = cur_list->obj_pos->inode, |
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.offset = cur_list->obj_pos->stripe, |
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.len = 0, |
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}, |
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}; |
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op->callback = [this, cur_list](osd_op_t *op) |
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{ |
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cur_list->in_flight--; |
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if (op->reply.hdr.retval < 0) |
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{ |
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fprintf(stderr, "Failed to remove object %lx:%lx from PG %u (OSD %lu) (retval=%ld)\n", |
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op->req.rw.inode, op->req.rw.offset, |
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cur_list->pg_num, cur_list->rm_osd_num, op->reply.hdr.retval); |
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} |
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delete op; |
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cur_list->obj_done++; |
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total_done++; |
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continue_delete(); |
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}; |
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cur_list->obj_pos++; |
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cur_list->in_flight++; |
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parent->cli->msgr.outbox_push(op); |
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} |
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} |
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void continue_delete() |
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{ |
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if (parent->list_first && !lists_done) |
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{ |
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return; |
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} |
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for (int i = 0; i < lists.size(); i++) |
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{ |
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if (!lists[i]->in_flight && lists[i]->obj_pos == lists[i]->objects.end()) |
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{ |
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delete lists[i]; |
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lists.erase(lists.begin()+i, lists.begin()+i+1); |
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i--; |
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if (!lists_done) |
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{ |
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parent->cli->list_inode_next(lister, 1); |
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} |
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} |
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else |
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{ |
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send_ops(lists[i]); |
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} |
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} |
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if (parent->progress && total_count > 0 && total_done*1000/total_count != total_prev_pct) |
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{ |
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printf("\rRemoved %lu/%lu objects, %lu more PGs to list...", total_done, total_count, pgs_to_list); |
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total_prev_pct = total_done*1000/total_count; |
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} |
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if (lists_done && !lists.size()) |
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{ |
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printf("Done, inode %lu in pool %u removed\n", (inode & ((1l << (64-POOL_ID_BITS)) - 1)), pool_id); |
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exit(0); |
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} |
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} |
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}; |
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// Layer merge is the base for multiple operations:
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// 1) Delete snapshot "up" = merge child layer into the parent layer, remove the child
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// and rename the parent to the child
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// 2) Delete snapshot "down" = merge parent layer into the child layer and remove the parent
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// 3) Flatten image = merge parent layers into the child layer and break the connection
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struct snap_merger_t |
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{ |
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cli_tool_t *parent; |
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// merge from..to into target (target may be one of from..to)
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std::string from_name, to_name, target_name; |
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// inode=>rank (bigger rank means child layers)
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std::map<inode_t,int> sources; |
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// target to merge data into
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inode_t target; |
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// rank of the target
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int target_rank; |
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// delete merged source inode data during merge
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bool delete_source = false; |
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// don't necessarily delete source data, but perform checks as if we were to do it
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bool check_delete_source = false; |
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// interval between fsyncs
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int fsync_interval = 128; |
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bool inside_continue = false; |
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int state = 0; |
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int lists_todo = 0; |
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uint64_t target_block_size = 0; |
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btree::safe_btree_set<uint64_t> merge_offsets; |
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btree::safe_btree_set<uint64_t>::iterator oit; |
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std::map<inode_t, std::vector<uint64_t>> layer_lists; |
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std::map<inode_t, uint64_t> layer_block_size; |
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std::map<inode_t, uint64_t> layer_list_pos; |
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int in_flight = 0; |
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uint64_t last_fsync_offset = 0; |
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uint64_t last_written_offset = 0; |
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int deleted_unsynced = 0; |
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uint64_t processed = 0, to_process = 0; |
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inode_config_t* get_inode_cfg(const std::string & name) |
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{ |
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for (auto & ic: parent->cli->st_cli.inode_config) |
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{ |
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if (ic.second.name == name) |
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{ |
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return &ic.second; |
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} |
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} |
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fprintf(stderr, "Layer %s not found\n", name.c_str()); |
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exit(1); |
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} |
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void start_merge() |
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{ |
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check_delete_source = delete_source || check_delete_source; |
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inode_config_t *from_cfg = get_inode_cfg(from_name); |
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inode_config_t *to_cfg = get_inode_cfg(to_name); |
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inode_config_t *target_cfg = target_name == "" ? from_cfg : get_inode_cfg(target_name); |
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if (to_cfg->num == from_cfg->num) |
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{ |
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fprintf(stderr, "Only one layer specified, nothing to merge\n"); |
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exit(1); |
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} |
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// Check that to_cfg is actually a child of from_cfg and target_cfg is somewhere between them
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std::vector<inode_t> chain_list; |
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inode_config_t *cur = to_cfg; |
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chain_list.push_back(cur->num); |
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layer_block_size[cur->num] = get_block_size(cur->num); |
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while (cur->parent_id != from_cfg->num && |
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cur->parent_id != to_cfg->num && |
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cur->parent_id != 0) |
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{ |
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auto it = parent->cli->st_cli.inode_config.find(cur->parent_id); |
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if (it == parent->cli->st_cli.inode_config.end()) |
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{ |
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fprintf(stderr, "Parent inode of layer %s (%lx) not found\n", cur->name.c_str(), cur->parent_id); |
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exit(1); |
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} |
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cur = &it->second; |
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chain_list.push_back(cur->num); |
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layer_block_size[cur->num] = get_block_size(cur->num); |
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} |
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if (cur->parent_id != from_cfg->num) |
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{ |
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fprintf(stderr, "Layer %s is not a child of %s\n", to_name.c_str(), from_name.c_str()); |
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exit(1); |
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} |
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chain_list.push_back(from_cfg->num); |
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layer_block_size[from_cfg->num] = get_block_size(from_cfg->num); |
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int i = chain_list.size()-1; |
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for (inode_t item: chain_list) |
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{ |
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sources[item] = i--; |
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} |
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if (sources.find(target_cfg->num) == sources.end()) |
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{ |
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fprintf(stderr, "Layer %s is not between %s and %s\n", target_name.c_str(), to_name.c_str(), from_name.c_str()); |
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exit(1); |
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} |
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target = target_cfg->num; |
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target_rank = sources.at(target); |
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int to_rank = sources.at(to_cfg->num); |
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// Check that there are no other inodes dependent on altered layers
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//
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// 1) everything between <target> and <to> except <to> is not allowed
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// to have children other than <to> if <to> is a child of <target>:
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//
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// <target> - <layer 3> - <to>
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// \- <layer 4> <--------X--------- NOT ALLOWED
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//
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// 2) everything between <from> and <target>, except <target>, is not allowed
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// to have children other than <target> if sources are to be deleted after merging:
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//
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// <from> - <layer 1> - <target> - <to>
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// \- <layer 2> <---------X-------- NOT ALLOWED
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for (auto & ic: parent->cli->st_cli.inode_config) |
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{ |
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auto it = sources.find(ic.second.num); |
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if (it == sources.end() && ic.second.parent_id != 0) |
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{ |
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it = sources.find(ic.second.parent_id); |
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if (it != sources.end()) |
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{ |
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int parent_rank = it->second; |
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if (parent_rank < to_rank && (parent_rank >= target_rank || check_delete_source)) |
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{ |
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fprintf( |
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stderr, "Layers at or above %s, but below %s are not allowed" |
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" to have other children, but %s is a child of %s\n", |
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(check_delete_source ? from_name.c_str() : target_name.c_str()), |
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to_name.c_str(), ic.second.name.c_str(), |
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parent->cli->st_cli.inode_config.at(ic.second.parent_id).name.c_str() |
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); |
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exit(1); |
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} |
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} |
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} |
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} |
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sources.erase(target); |
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printf("Merging %ld layers into target inode %lx\n", sources.size(), target); |
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target_block_size = get_block_size(target); |
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continue_merge_reent(); |
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} |
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uint64_t get_block_size(inode_t inode) |
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{ |
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auto & pool_cfg = parent->cli->st_cli.pool_config.at(INODE_POOL(inode)); |
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uint64_t pg_data_size = (pool_cfg.scheme == POOL_SCHEME_REPLICATED ? 1 : pool_cfg.pg_size-pool_cfg.parity_chunks); |
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return parent->cli->get_bs_block_size() * pg_data_size; |
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} |
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void continue_merge_reent() |
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{ |
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if (!inside_continue) |
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{ |
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inside_continue = true; |
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continue_merge(); |
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inside_continue = false; |
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} |
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} |
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void continue_merge() |
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{ |
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if (state == 1) |
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goto resume_1; |
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else if (state == 2) |
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goto resume_2; |
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else if (state == 3) |
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goto resume_3; |
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else if (state == 4) |
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goto resume_4; |
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else if (state == 5) |
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goto resume_5; |
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else if (state == 6) |
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goto resume_6; |
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// First list lower layers
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list_layers(true); |
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state = 1; |
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resume_1: |
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while (lists_todo > 0) |
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{ |
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// Wait for lists
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return; |
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} |
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if (merge_offsets.size() > 0) |
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{ |
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state = 2; |
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oit = merge_offsets.begin(); |
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processed = 0; |
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to_process = merge_offsets.size(); |
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resume_2: |
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// Then remove blocks already filled in target by issuing zero-length reads and checking bitmaps
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while (in_flight < parent->iodepth*parent->parallel_osds && oit != merge_offsets.end()) |
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{ |
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in_flight++; |
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check_if_full(*oit); |
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oit++; |
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processed++; |
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if (parent->progress && !(processed % 128)) |
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{ |
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printf("\rFiltering target blocks: %lu/%lu", processed, to_process); |
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} |
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} |
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if (in_flight > 0 || oit != merge_offsets.end()) |
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{ |
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// Wait until reads finish
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return; |
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} |
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if (parent->progress) |
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{ |
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printf("\r%lu full blocks of target filtered out\n", to_process-merge_offsets.size()); |
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} |
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} |
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state = 3; |
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resume_3: |
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// Then list upper layers
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list_layers(false); |
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state = 4; |
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resume_4: |
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while (lists_todo > 0) |
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{ |
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// Wait for lists
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return; |
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} |
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state = 5; |
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processed = 0; |
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to_process = merge_offsets.size(); |
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oit = merge_offsets.begin(); |
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resume_5: |
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// Now read, overwrite and optionally delete offsets one by one
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while (in_flight < parent->iodepth*parent->parallel_osds && oit != merge_offsets.end()) |
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{ |
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in_flight++; |
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read_and_write(*oit); |
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oit++; |
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processed++; |
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if (parent->progress && !(processed % 128)) |
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{ |
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printf("\rOverwriting blocks: %lu/%lu", processed, to_process); |
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} |
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} |
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if (in_flight > 0 || oit != merge_offsets.end()) |
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{ |
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// Wait until overwrites finish
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return; |
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} |
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if (parent->progress) |
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{ |
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printf("\rOverwriting blocks: %lu/%lu\n", to_process, to_process); |
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} |
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state = 6; |
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resume_6: |
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// Done
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printf("Done, layers from %s to %s merged into %s\n", from_name.c_str(), to_name.c_str(), target_name.c_str()); |
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exit(0); |
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} |
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void list_layers(bool lower) |
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{ |
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for (auto & sp: sources) |
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{ |
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inode_t src = sp.first; |
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if (lower ? (sp.second < target_rank) : (sp.second > target_rank)) |
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{ |
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lists_todo++; |
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inode_list_t* lst = parent->cli->list_inode_start(src, [this, src]( |
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inode_list_t *lst, std::set<object_id>&& objects, pg_num_t pg_num, osd_num_t primary_osd, int status) |
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{ |
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uint64_t layer_block = layer_block_size.at(src); |
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for (object_id obj: objects) |
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{ |
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merge_offsets.insert(obj.stripe - obj.stripe % target_block_size); |
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for (int i = target_block_size; i < layer_block; i += target_block_size) |
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{ |
||||
merge_offsets.insert(obj.stripe - obj.stripe % target_block_size + i); |
||||
} |
||||
} |
||||
if (delete_source) |
||||
{ |
||||
// Also store individual lists
|
||||
auto & layer_list = layer_lists[src]; |
||||
int pos = layer_list.size(); |
||||
layer_list.resize(pos + objects.size()); |
||||
for (object_id obj: objects) |
||||
{ |
||||
layer_list[pos++] = obj.stripe; |
||||
} |
||||
} |
||||
if (status & INODE_LIST_DONE) |
||||
{ |
||||
printf("Got listing of inode %lx\n", src); |
||||
if (delete_source) |
||||
{ |
||||
// Sort the inode listing
|
||||
std::sort(layer_lists[src].begin(), layer_lists[src].end()); |
||||
} |
||||
lists_todo--; |
||||
continue_merge_reent(); |
||||
} |
||||
else |
||||
{ |
||||
parent->cli->list_inode_next(lst, 1); |
||||
} |
||||
}); |
||||
parent->cli->list_inode_next(lst, parent->parallel_osds); |
||||
} |
||||
} |
||||
} |
||||
|
||||
// Check if <offset> is fully written in <target> and remove it from merge_offsets if so
|
||||
void check_if_full(uint64_t offset) |
||||
{ |
||||
cluster_op_t *op = new cluster_op_t; |
||||
op->opcode = OSD_OP_READ_BITMAP; |
||||
op->inode = target; |
||||
op->offset = offset; |
||||
op->len = 0; |
||||
op->callback = [this](cluster_op_t *op) |
||||
{ |
||||
if (op->retval < 0) |
||||
{ |
||||
fprintf(stderr, "error reading target bitmap at offset %lx: %s\n", op->offset, strerror(-op->retval)); |
||||
} |
||||
else |
||||
{ |
||||
uint64_t bitmap_bytes = target_block_size/parent->cli->get_bs_bitmap_granularity()/8; |
||||
int i; |
||||
for (i = 0; i < bitmap_bytes; i++) |
||||
{ |
||||
if (((uint8_t*)op->bitmap_buf)[i] != 0xff) |
||||
{ |
||||
break; |
||||
} |
||||
} |
||||
if (i == bitmap_bytes) |
||||
{ |
||||
// full
|
||||
merge_offsets.erase(op->offset); |
||||
} |
||||
} |
||||
delete op; |
||||
in_flight--; |
||||
continue_merge_reent(); |
||||
}; |
||||
parent->cli->execute(op); |
||||
} |
||||
|
||||
// Read <offset> from <to>, write it to <target> and optionally delete it
|
||||
// from all layers except <target> after fsync'ing
|
||||
void read_and_write(uint64_t offset) |
||||
{ |
||||
void *buf = malloc(target_block_size); |
||||
cluster_op_t *op = new cluster_op_t; |
||||
op->opcode = OSD_OP_READ; |
||||
op->inode = target; |
||||
op->offset = offset; |
||||
op->len = target_block_size; |
||||
op->iov.push_back(buf, target_block_size); |
||||
op->callback = [this](cluster_op_t *op) |
||||
{ |
||||
// Write each non-empty range using an individual operation
|
||||
// FIXME: Allow to use a single write with bitmap (OSDs don't allow it yet)
|
||||
uint32_t gran = parent->cli->get_bs_bitmap_granularity(); |
||||
uint64_t bitmap_size = target_block_size/gran; |
||||
uint32_t start = 0, end = 0; |
||||
int i; |
||||
// Track pending subops allowing write_subop() to return immediately (just in case)
|
||||
op->version = bitmap_size; |
||||
for (i = 0; i < bitmap_size; i++) |
||||
{ |
||||
auto bit = ((*(uint8_t*)(op->bitmap_buf + (i >> 3))) & (1 << (i & 0x7))); |
||||
if (!bit && end > start) |
||||
{ |
||||
// write end->start
|
||||
op->version++; |
||||
write_subop(op, start, end); |
||||
} |
||||
end += gran; |
||||
if (!bit) |
||||
{ |
||||
start = end; |
||||
} |
||||
} |
||||
if (end > start) |
||||
{ |
||||
// write end->start
|
||||
op->version++; |
||||
write_subop(op, start, end); |
||||
} |
||||
op->version -= bitmap_size; |
||||
// Just in case
|
||||
autofree_op(op); |
||||
}; |
||||
parent->cli->execute(op); |
||||
} |
||||
|
||||
void write_subop(cluster_op_t *op, uint32_t start, uint32_t end) |
||||
{ |
||||
void *buf = op->iov.buf[0].iov_base; |
||||
cluster_op_t *subop = new cluster_op_t; |
||||
subop->opcode = OSD_OP_WRITE; |
||||
subop->inode = target; |
||||
subop->offset = op->offset+start; |
||||
subop->len = end-start; |
||||
subop->iov.push_back(buf+start, end-start); |
||||
subop->callback = [this, op](cluster_op_t *subop) |
||||
{ |
||||
if (subop->retval != subop->len) |
||||
{ |
||||
fprintf(stderr, "error writing target at offset %lx: %s\n", subop->offset, strerror(-subop->retval)); |
||||
exit(1); |
||||
} |
||||
op->version--; |
||||
autofree_op(op); |
||||
delete subop; |
||||
}; |
||||
parent->cli->execute(subop); |
||||
} |
||||
|
||||
void delete_offset(inode_t inode_num, uint64_t offset) |
||||
{ |
||||
cluster_op_t *subop = new cluster_op_t; |
||||
subop->opcode = OSD_OP_DELETE; |
||||
subop->inode = inode_num; |
||||
subop->offset = offset; |
||||
subop->len = 0; |
||||
subop->callback = [this](cluster_op_t *subop) |
||||
{ |
||||
if (subop->retval != 0) |
||||
{ |
||||
fprintf(stderr, "error deleting from layer 0x%lx at offset %lx: %s", subop->inode, subop->offset, strerror(-subop->retval)); |
||||
} |
||||
delete subop; |
||||
}; |
||||
parent->cli->execute(subop); |
||||
} |
||||
|
||||
void autofree_op(cluster_op_t *op) |
||||
{ |
||||
if (!op->version) |
||||
{ |
||||
if (last_written_offset < op->offset+target_block_size) |
||||
{ |
||||
last_written_offset = op->offset+target_block_size; |
||||
} |
||||
if (delete_source) |
||||
{ |
||||
deleted_unsynced++; |
||||
if (deleted_unsynced >= fsync_interval) |
||||
{ |
||||
uint64_t from = last_fsync_offset, to = last_written_offset; |
||||
cluster_op_t *subop = new cluster_op_t; |
||||
subop->opcode = OSD_OP_SYNC; |
||||
subop->callback = [this, from, to](cluster_op_t *subop) |
||||
{ |
||||
delete subop; |
||||
// We can now delete source data between <from> and <to>
|
||||
// But to do this we have to keep all object lists in memory :-(
|
||||
for (auto & lp: layer_list_pos) |
||||
{ |
||||
auto & layer_list = layer_lists.at(lp.first); |
||||
uint64_t layer_block = layer_block_size.at(lp.first); |
||||
int cur_pos = lp.second; |
||||
while (cur_pos < layer_list.size() && layer_list[cur_pos]+layer_block < to) |
||||
{ |
||||
delete_offset(lp.first, layer_list[cur_pos]); |
||||
cur_pos++; |
||||
} |
||||
lp.second = cur_pos; |
||||
} |
||||
}; |
||||
parent->cli->execute(subop); |
||||
} |
||||
} |
||||
void *buf = op->iov.buf[0].iov_base; |
||||
free(buf); |
||||
delete op; |
||||
in_flight--; |
||||
continue_merge_reent(); |
||||
} |
||||
} |
||||
}; |
||||
|
||||
void cli_tool_t::run(json11::Json cfg) |
||||
{ |
||||
json11::Json::array cmd = cfg["command"].array_items(); |
||||
if (!cmd.size()) |
||||
{ |
||||
fprintf(stderr, "command is missing\n"); |
||||
exit(1); |
||||
} |
||||
else if (cmd[0] == "rm") |
||||
{ |
||||
// Delete inode
|
||||
remover = new rm_inode_t(); |
||||
remover->parent = this; |
||||
remover->inode = cfg["inode"].uint64_value(); |
||||
remover->pool_id = cfg["pool"].uint64_value(); |
||||
if (remover->pool_id) |
||||
remover->inode = (remover->inode & ((1l << (64-POOL_ID_BITS)) - 1)) | (((uint64_t)remover->pool_id) << (64-POOL_ID_BITS)); |
||||
remover->pool_id = INODE_POOL(remover->inode); |
||||
if (!remover->pool_id) |
||||
{ |
||||
fprintf(stderr, "pool is missing\n"); |
||||
exit(1); |
||||
} |
||||
} |
||||
else if (cmd[0] == "merge") |
||||
{ |
||||
// Merge layers
|
||||
merger = new snap_merger_t(); |
||||
merger->parent = this; |
||||
merger->from_name = cmd[1].string_value(); |
||||
merger->to_name = cmd[2].string_value(); |
||||
merger->target_name = cfg["target"].string_value(); |
||||
if (merger->from_name == "" || merger->to_name == "") |
||||
{ |
||||
fprintf(stderr, "Beginning or end of the merge sequence is missing\n"); |
||||
exit(1); |
||||
} |
||||
merger->delete_source = cfg["delete"].string_value() != ""; |
||||
merger->fsync_interval = cfg["fsync-interval"].uint64_value(); |
||||
if (!merger->fsync_interval) |
||||
merger->fsync_interval = 128; |
||||
} |
||||
else |
||||
{ |
||||
fprintf(stderr, "unknown command: %s\n", cmd[0].string_value().c_str()); |
||||
exit(1); |
||||
} |
||||
iodepth = cfg["iodepth"].uint64_value(); |
||||
if (!iodepth) |
||||
iodepth = 32; |
||||
parallel_osds = cfg["parallel_osds"].uint64_value(); |
||||
if (!parallel_osds) |
||||
parallel_osds = 4; |
||||
log_level = cfg["log_level"].int64_value(); |
||||
progress = cfg["progress"].uint64_value() ? true : false; |
||||
list_first = cfg["wait-list"].uint64_value() ? true : false; |
||||
// Create client
|
||||
ringloop = new ring_loop_t(512); |
||||
epmgr = new epoll_manager_t(ringloop); |
||||
cli = new cluster_client_t(ringloop, epmgr->tfd, cfg); |
||||
cli->on_ready([this]() { start_work(); }); |
||||
// Initialize job
|
||||
consumer.loop = [this]() |
||||
{ |
||||
if (started) |
||||
continue_work(); |
||||
ringloop->submit(); |
||||
}; |
||||
ringloop->register_consumer(&consumer); |
||||
// Loop until it completes
|
||||
while (1) |
||||
{ |
||||
ringloop->loop(); |
||||
ringloop->wait(); |
||||
} |
||||
} |
||||
|
||||
void cli_tool_t::start_work() |
||||
{ |
||||
if (remover) |
||||
{ |
||||
remover->start_delete(); |
||||
} |
||||
else if (merger) |
||||
{ |
||||
merger->start_merge(); |
||||
} |
||||
started = true; |
||||
} |
||||
|
||||
void cli_tool_t::continue_work() |
||||
{ |
||||
if (remover) |
||||
{ |
||||
remover->continue_delete(); |
||||
} |
||||
else if (merger) |
||||
{ |
||||
merger->continue_merge_reent(); |
||||
} |
||||
} |
||||
|
||||
int main(int narg, const char *args[]) |
||||
{ |
||||
setvbuf(stdout, NULL, _IONBF, 0); |
||||
setvbuf(stderr, NULL, _IONBF, 0); |
||||
exe_name = args[0]; |
||||
cli_tool_t *p = new cli_tool_t(); |
||||
p->run(cli_tool_t::parse_args(narg, args)); |
||||
return 0; |
||||
} |
||||