hastctl.c revision 229509 
1/*-
2 * Copyright (c) 2009-2010 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Pawel Jakub Dawidek under sponsorship from
6 * the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/9/sbin/hastctl/hastctl.c 229509 2012-01-04 17:22:10Z trociny $");
32
33#include <sys/param.h>
34#include <sys/disk.h>
35#include <sys/ioctl.h>
36#include <sys/stat.h>
37#include <sys/sysctl.h>
38
39#include <err.h>
40#include <errno.h>
41#include <fcntl.h>
42#include <libutil.h>
43#include <limits.h>
44#include <signal.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <sysexits.h>
49#include <unistd.h>
50
51#include <activemap.h>
52
53#include "hast.h"
54#include "hast_proto.h"
55#include "metadata.h"
56#include "nv.h"
57#include "pjdlog.h"
58#include "proto.h"
59#include "subr.h"
60
61/* Path to configuration file. */
62static const char *cfgpath = HAST_CONFIG;
63/* Hastd configuration. */
64static struct hastd_config *cfg;
65/* Control connection. */
66static struct proto_conn *controlconn;
67
68enum {
69	CMD_INVALID,
70	CMD_CREATE,
71	CMD_ROLE,
72	CMD_STATUS,
73	CMD_DUMP
74};
75
76static __dead2 void
77usage(void)
78{
79
80	fprintf(stderr,
81	    "usage: %s create [-d] [-c config] [-e extentsize] [-k keepdirty]\n"
82	    "\t\t[-m mediasize] name ...\n",
83	    getprogname());
84	fprintf(stderr,
85	    "       %s role [-d] [-c config] <init | primary | secondary> all | name ...\n",
86	    getprogname());
87	fprintf(stderr,
88	    "       %s status [-d] [-c config] [all | name ...]\n",
89	    getprogname());
90	fprintf(stderr,
91	    "       %s dump [-d] [-c config] [all | name ...]\n",
92	    getprogname());
93	exit(EX_USAGE);
94}
95
96static int
97create_one(struct hast_resource *res, intmax_t mediasize, intmax_t extentsize,
98    intmax_t keepdirty)
99{
100	unsigned char *buf;
101	size_t mapsize;
102	int ec;
103
104	ec = 0;
105	pjdlog_prefix_set("[%s] ", res->hr_name);
106
107	if (provinfo(res, true) < 0) {
108		ec = EX_NOINPUT;
109		goto end;
110	}
111	if (mediasize == 0)
112		mediasize = res->hr_local_mediasize;
113	else if (mediasize > res->hr_local_mediasize) {
114		pjdlog_error("Provided mediasize is larger than provider %s size.",
115		    res->hr_localpath);
116		ec = EX_DATAERR;
117		goto end;
118	}
119	if (!powerof2(res->hr_local_sectorsize)) {
120		pjdlog_error("Sector size of provider %s is not power of 2 (%u).",
121		    res->hr_localpath, res->hr_local_sectorsize);
122		ec = EX_DATAERR;
123		goto end;
124	}
125	if (extentsize == 0)
126		extentsize = HAST_EXTENTSIZE;
127	if (extentsize < res->hr_local_sectorsize) {
128		pjdlog_error("Extent size (%jd) is less than sector size (%u).",
129		    (intmax_t)extentsize, res->hr_local_sectorsize);
130		ec = EX_DATAERR;
131		goto end;
132	}
133	if ((extentsize % res->hr_local_sectorsize) != 0) {
134		pjdlog_error("Extent size (%jd) is not multiple of sector size (%u).",
135		    (intmax_t)extentsize, res->hr_local_sectorsize);
136		ec = EX_DATAERR;
137		goto end;
138	}
139	mapsize = activemap_calc_ondisk_size(mediasize - METADATA_SIZE,
140	    extentsize, res->hr_local_sectorsize);
141	if (keepdirty == 0)
142		keepdirty = HAST_KEEPDIRTY;
143	res->hr_datasize = mediasize - METADATA_SIZE - mapsize;
144	res->hr_extentsize = extentsize;
145	res->hr_keepdirty = keepdirty;
146
147	res->hr_localoff = METADATA_SIZE + mapsize;
148
149	if (metadata_write(res) < 0) {
150		ec = EX_IOERR;
151		goto end;
152	}
153	buf = calloc(1, mapsize);
154	if (buf == NULL) {
155		pjdlog_error("Unable to allocate %zu bytes of memory for initial bitmap.",
156		    mapsize);
157		ec = EX_TEMPFAIL;
158		goto end;
159	}
160	if (pwrite(res->hr_localfd, buf, mapsize, METADATA_SIZE) !=
161	    (ssize_t)mapsize) {
162		pjdlog_errno(LOG_ERR, "Unable to store initial bitmap on %s",
163		    res->hr_localpath);
164		free(buf);
165		ec = EX_IOERR;
166		goto end;
167	}
168	free(buf);
169end:
170	if (res->hr_localfd >= 0)
171		close(res->hr_localfd);
172	pjdlog_prefix_set("%s", "");
173	return (ec);
174}
175
176static void
177control_create(int argc, char *argv[], intmax_t mediasize, intmax_t extentsize,
178    intmax_t keepdirty)
179{
180	struct hast_resource *res;
181	int ec, ii, ret;
182
183	/* Initialize the given resources. */
184	if (argc < 1)
185		usage();
186	ec = 0;
187	for (ii = 0; ii < argc; ii++) {
188		TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
189			if (strcmp(argv[ii], res->hr_name) == 0)
190				break;
191		}
192		if (res == NULL) {
193			pjdlog_error("Unknown resource %s.", argv[ii]);
194			if (ec == 0)
195				ec = EX_DATAERR;
196			continue;
197		}
198		ret = create_one(res, mediasize, extentsize, keepdirty);
199		if (ret != 0 && ec == 0)
200			ec = ret;
201	}
202	exit(ec);
203}
204
205static int
206dump_one(struct hast_resource *res)
207{
208	int ret;
209
210	ret = metadata_read(res, false);
211	if (ret != 0)
212		return (ret);
213
214	printf("resource: %s\n", res->hr_name);
215	printf("    datasize: %ju (%NB)\n", (uintmax_t)res->hr_datasize,
216	    (intmax_t)res->hr_datasize);
217	printf("    extentsize: %d (%NB)\n", res->hr_extentsize,
218	    (intmax_t)res->hr_extentsize);
219	printf("    keepdirty: %d\n", res->hr_keepdirty);
220	printf("    localoff: %ju\n", (uintmax_t)res->hr_localoff);
221	printf("    resuid: %ju\n", (uintmax_t)res->hr_resuid);
222	printf("    localcnt: %ju\n", (uintmax_t)res->hr_primary_localcnt);
223	printf("    remotecnt: %ju\n", (uintmax_t)res->hr_primary_remotecnt);
224	printf("    prevrole: %s\n", role2str(res->hr_previous_role));
225
226	return (0);
227}
228
229static void
230control_dump(int argc, char *argv[])
231{
232	struct hast_resource *res;
233	int ec, ret;
234
235	/* Dump metadata of the given resource(s). */
236
237	ec = 0;
238	if (argc == 0 || (argc == 1 && strcmp(argv[0], "all") == 0)) {
239		TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
240			ret = dump_one(res);
241			if (ret != 0 && ec == 0)
242				ec = ret;
243		}
244	} else {
245		int ii;
246
247		for (ii = 0; ii < argc; ii++) {
248			TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
249				if (strcmp(argv[ii], res->hr_name) == 0)
250					break;
251			}
252			if (res == NULL) {
253				pjdlog_error("Unknown resource %s.", argv[ii]);
254				if (ec == 0)
255					ec = EX_DATAERR;
256				continue;
257			}
258			ret = dump_one(res);
259			if (ret != 0 && ec == 0)
260				ec = ret;
261		}
262	}
263	exit(ec);
264}
265
266static int
267control_set_role(struct nv *nv, const char *newrole)
268{
269	const char *res, *oldrole;
270	unsigned int ii;
271	int error, ret;
272
273	ret = 0;
274
275	for (ii = 0; ; ii++) {
276		res = nv_get_string(nv, "resource%u", ii);
277		if (res == NULL)
278			break;
279		pjdlog_prefix_set("[%s] ", res);
280		error = nv_get_int16(nv, "error%u", ii);
281		if (error != 0) {
282			if (ret == 0)
283				ret = error;
284			pjdlog_warning("Received error %d from hastd.", error);
285			continue;
286		}
287		oldrole = nv_get_string(nv, "role%u", ii);
288		if (strcmp(oldrole, newrole) == 0)
289			pjdlog_debug(2, "Role unchanged (%s).", oldrole);
290		else {
291			pjdlog_debug(1, "Role changed from %s to %s.", oldrole,
292			    newrole);
293		}
294	}
295	pjdlog_prefix_set("%s", "");
296	return (ret);
297}
298
299static int
300control_status(struct nv *nv)
301{
302	unsigned int ii;
303	const char *str;
304	int error, ret;
305
306	ret = 0;
307
308	for (ii = 0; ; ii++) {
309		str = nv_get_string(nv, "resource%u", ii);
310		if (str == NULL)
311			break;
312		printf("%s:\n", str);
313		error = nv_get_int16(nv, "error%u", ii);
314		if (error != 0) {
315			if (ret == 0)
316				ret = error;
317			printf("  error: %d\n", error);
318			continue;
319		}
320		printf("  role: %s\n", nv_get_string(nv, "role%u", ii));
321		printf("  provname: %s\n",
322		    nv_get_string(nv, "provname%u", ii));
323		printf("  localpath: %s\n",
324		    nv_get_string(nv, "localpath%u", ii));
325		printf("  extentsize: %u (%NB)\n",
326		    (unsigned int)nv_get_uint32(nv, "extentsize%u", ii),
327		    (intmax_t)nv_get_uint32(nv, "extentsize%u", ii));
328		printf("  keepdirty: %u\n",
329		    (unsigned int)nv_get_uint32(nv, "keepdirty%u", ii));
330		printf("  remoteaddr: %s\n",
331		    nv_get_string(nv, "remoteaddr%u", ii));
332		str = nv_get_string(nv, "sourceaddr%u", ii);
333		if (str != NULL)
334			printf("  sourceaddr: %s\n", str);
335		printf("  replication: %s\n",
336		    nv_get_string(nv, "replication%u", ii));
337		str = nv_get_string(nv, "status%u", ii);
338		if (str != NULL)
339			printf("  status: %s\n", str);
340		printf("  dirty: %ju (%NB)\n",
341		    (uintmax_t)nv_get_uint64(nv, "dirty%u", ii),
342		    (intmax_t)nv_get_uint64(nv, "dirty%u", ii));
343		printf("  statistics:\n");
344		printf("    reads: %ju\n",
345		    (uint64_t)nv_get_uint64(nv, "stat_read%u", ii));
346		printf("    writes: %ju\n",
347		    (uint64_t)nv_get_uint64(nv, "stat_write%u", ii));
348		printf("    deletes: %ju\n",
349		    (uint64_t)nv_get_uint64(nv, "stat_delete%u", ii));
350		printf("    flushes: %ju\n",
351		    (uint64_t)nv_get_uint64(nv, "stat_flush%u", ii));
352		printf("    activemap updates: %ju\n",
353		    (uint64_t)nv_get_uint64(nv, "stat_activemap_update%u", ii));
354	}
355	return (ret);
356}
357
358int
359main(int argc, char *argv[])
360{
361	struct nv *nv;
362	int64_t mediasize, extentsize, keepdirty;
363	int cmd, debug, error, ii;
364	const char *optstr;
365
366	debug = 0;
367	mediasize = extentsize = keepdirty = 0;
368
369	if (argc == 1)
370		usage();
371
372	if (strcmp(argv[1], "create") == 0) {
373		cmd = CMD_CREATE;
374		optstr = "c:de:k:m:h";
375	} else if (strcmp(argv[1], "role") == 0) {
376		cmd = CMD_ROLE;
377		optstr = "c:dh";
378	} else if (strcmp(argv[1], "status") == 0) {
379		cmd = CMD_STATUS;
380		optstr = "c:dh";
381	} else if (strcmp(argv[1], "dump") == 0) {
382		cmd = CMD_DUMP;
383		optstr = "c:dh";
384	} else
385		usage();
386
387	argc--;
388	argv++;
389
390	for (;;) {
391		int ch;
392
393		ch = getopt(argc, argv, optstr);
394		if (ch == -1)
395			break;
396		switch (ch) {
397		case 'c':
398			cfgpath = optarg;
399			break;
400		case 'd':
401			debug++;
402			break;
403		case 'e':
404			if (expand_number(optarg, &extentsize) < 0)
405				errx(EX_USAGE, "Invalid extentsize");
406			break;
407		case 'k':
408			if (expand_number(optarg, &keepdirty) < 0)
409				errx(EX_USAGE, "Invalid keepdirty");
410			break;
411		case 'm':
412			if (expand_number(optarg, &mediasize) < 0)
413				errx(EX_USAGE, "Invalid mediasize");
414			break;
415		case 'h':
416		default:
417			usage();
418		}
419	}
420	argc -= optind;
421	argv += optind;
422
423	switch (cmd) {
424	case CMD_CREATE:
425	case CMD_ROLE:
426		if (argc == 0)
427			usage();
428		break;
429	}
430
431	pjdlog_init(PJDLOG_MODE_STD);
432	pjdlog_debug_set(debug);
433
434	cfg = yy_config_parse(cfgpath, true);
435	PJDLOG_ASSERT(cfg != NULL);
436
437	switch (cmd) {
438	case CMD_CREATE:
439		control_create(argc, argv, mediasize, extentsize, keepdirty);
440		/* NOTREACHED */
441		PJDLOG_ABORT("What are we doing here?!");
442		break;
443	case CMD_DUMP:
444		/* Dump metadata from local component of the given resource. */
445		control_dump(argc, argv);
446		/* NOTREACHED */
447		PJDLOG_ABORT("What are we doing here?!");
448		break;
449	case CMD_ROLE:
450		/* Change role for the given resources. */
451		if (argc < 2)
452			usage();
453		nv = nv_alloc();
454		nv_add_uint8(nv, HASTCTL_CMD_SETROLE, "cmd");
455		if (strcmp(argv[0], "init") == 0)
456			nv_add_uint8(nv, HAST_ROLE_INIT, "role");
457		else if (strcmp(argv[0], "primary") == 0)
458			nv_add_uint8(nv, HAST_ROLE_PRIMARY, "role");
459		else if (strcmp(argv[0], "secondary") == 0)
460			nv_add_uint8(nv, HAST_ROLE_SECONDARY, "role");
461		else
462			usage();
463		for (ii = 0; ii < argc - 1; ii++)
464			nv_add_string(nv, argv[ii + 1], "resource%d", ii);
465		break;
466	case CMD_STATUS:
467		/* Obtain status of the given resources. */
468		nv = nv_alloc();
469		nv_add_uint8(nv, HASTCTL_CMD_STATUS, "cmd");
470		if (argc == 0)
471			nv_add_string(nv, "all", "resource%d", 0);
472		else {
473			for (ii = 0; ii < argc; ii++)
474				nv_add_string(nv, argv[ii], "resource%d", ii);
475		}
476		break;
477	default:
478		PJDLOG_ABORT("Impossible command!");
479	}
480
481	/* Setup control connection... */
482	if (proto_client(NULL, cfg->hc_controladdr, &controlconn) < 0) {
483		pjdlog_exit(EX_OSERR,
484		    "Unable to setup control connection to %s",
485		    cfg->hc_controladdr);
486	}
487	/* ...and connect to hastd. */
488	if (proto_connect(controlconn, HAST_TIMEOUT) < 0) {
489		pjdlog_exit(EX_OSERR, "Unable to connect to hastd via %s",
490		    cfg->hc_controladdr);
491	}
492
493	if (drop_privs(NULL) != 0)
494		exit(EX_CONFIG);
495
496	/* Send the command to the server... */
497	if (hast_proto_send(NULL, controlconn, nv, NULL, 0) < 0) {
498		pjdlog_exit(EX_UNAVAILABLE,
499		    "Unable to send command to hastd via %s",
500		    cfg->hc_controladdr);
501	}
502	nv_free(nv);
503	/* ...and receive reply. */
504	if (hast_proto_recv_hdr(controlconn, &nv) < 0) {
505		pjdlog_exit(EX_UNAVAILABLE,
506		    "cannot receive reply from hastd via %s",
507		    cfg->hc_controladdr);
508	}
509
510	error = nv_get_int16(nv, "error");
511	if (error != 0) {
512		pjdlog_exitx(EX_SOFTWARE, "Error %d received from hastd.",
513		    error);
514	}
515	nv_set_error(nv, 0);
516
517	switch (cmd) {
518	case CMD_ROLE:
519		error = control_set_role(nv, argv[0]);
520		break;
521	case CMD_STATUS:
522		error = control_status(nv);
523		break;
524	default:
525		PJDLOG_ABORT("Impossible command!");
526	}
527
528	exit(error);
529}
530