2 * Copyright (c) 2011-2012 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@dragonflybsd.org>
6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static void usage(int code);
41 int NormalExit = 1; /* if set to 0 main() has to pthread_exit() */
44 main(int ac, char **av)
46 const char *sel_path = NULL;
47 const char *uuid_str = NULL;
48 int pfs_type = HAMMER2_PFSTYPE_NONE;
57 while ((ch = getopt(ac, av, "adqs:t:u:")) != -1) {
64 * Quick mode - do not block verifying certain
65 * operations such as (connect).
74 * set node type for mkpfs
76 if (strcasecmp(optarg, "ADMIN") == 0) {
77 pfs_type = HAMMER2_PFSTYPE_ADMIN;
78 } else if (strcasecmp(optarg, "CACHE") == 0) {
79 pfs_type = HAMMER2_PFSTYPE_CACHE;
80 } else if (strcasecmp(optarg, "COPY") == 0) {
81 pfs_type = HAMMER2_PFSTYPE_COPY;
82 } else if (strcasecmp(optarg, "SLAVE") == 0) {
83 pfs_type = HAMMER2_PFSTYPE_SLAVE;
84 } else if (strcasecmp(optarg, "SOFT_SLAVE") == 0) {
85 pfs_type = HAMMER2_PFSTYPE_SOFT_SLAVE;
86 } else if (strcasecmp(optarg, "SOFT_MASTER") == 0) {
87 pfs_type = HAMMER2_PFSTYPE_SOFT_MASTER;
88 } else if (strcasecmp(optarg, "MASTER") == 0) {
89 pfs_type = HAMMER2_PFSTYPE_MASTER;
91 fprintf(stderr, "-t: Unrecognized node type\n");
97 * set uuid for mkpfs, else one will be generated
98 * (required for all except the MASTER node_type)
106 fprintf(stderr, "Unknown option: %c\n", ch);
114 * Adjust, then process the command
119 fprintf(stderr, "Missing command\n");
124 if (strcmp(av[0], "connect") == 0) {
126 * Add cluster connection
129 fprintf(stderr, "connect: missing argument\n");
132 ecode = cmd_remote_connect(sel_path, av[1]);
133 } else if (strcmp(av[0], "disconnect") == 0) {
135 * Remove cluster connection
138 fprintf(stderr, "disconnect: missing argument\n");
141 ecode = cmd_remote_disconnect(sel_path, av[1]);
142 } else if (strcmp(av[0], "status") == 0) {
144 * Get status of PFS and its connections (-a for all PFSs)
146 ecode = cmd_remote_status(sel_path, all_opt);
147 } else if (strcmp(av[0], "pfs_list") == 0) {
151 ecode = cmd_pfs_list(sel_path);
152 } else if (strcmp(av[0], "pfs_create") == 0) {
154 * Create new PFS using pfs_type
157 fprintf(stderr, "pfs_create: requires name\n");
160 ecode = cmd_pfs_create(sel_path, av[1], pfs_type, uuid_str);
161 } else if (strcmp(av[0], "pfs_delete") == 0) {
163 * Delete a PFS by name
166 fprintf(stderr, "pfs_delete: requires name\n");
169 ecode = cmd_pfs_delete(sel_path, av[1]);
170 } else if (strcmp(av[0], "snapshot") == 0) {
172 * Create snapshot with optional pfs_type and optional
175 } else if (strcmp(av[0], "node") == 0) {
177 * Start the master node daemon. This daemon accepts
178 * connections from local and remote clients, implements
179 * and maintains the spanning tree protocol, and manages
180 * the core messaging protocol.
183 } else if (strcmp(av[0], "leaf") == 0) {
185 * Start the management daemon for a specific PFS.
187 * This will typically connect to the local master node
188 * daemon, register the PFS, and then pass its side of
189 * the socket descriptor to the kernel HAMMER2 VFS via an
190 * ioctl(). The process and/or thread context remains in the
191 * kernel until the PFS is unmounted or the connection is
192 * lost, then returns from the ioctl.
194 * It is possible to connect directly to a remote master node
195 * instead of the local master node in situations where
196 * encryption is not desired or no local master node is
197 * desired. This is not recommended because it represents
198 * a single point of failure for the PFS's communications.
200 * Direct kernel<->kernel communication between HAMMER2 VFSs
201 * is theoretically possible for directly-connected
202 * registrations (i.e. where the spanning tree is degenerate),
203 * but not recommended. We specifically try to reduce the
204 * complexity of the HAMMER2 VFS kernel code.
206 ecode = cmd_leaf(sel_path);
207 } else if (strcmp(av[0], "debug") == 0) {
209 * Connect to the command line monitor in the hammer2 master
210 * node for the machine using HAMMER2_DBG_SHELL messages.
214 fprintf(stderr, "Unrecognized command: %s\n", av[0]);
219 * In DebugMode we may wind up starting several pthreads in the
220 * original process, in which case we have to let them run and
227 _exit(2); /* NOT REACHED */
236 "hammer2 [-s path] command...\n"
237 " -s path Select filesystem\n"