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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("$FreeBSD$");
32
33 #include <sys/param.h>
34
35 #include <err.h>
36 #include <libutil.h>
37 #include <stdio.h>
38 #include <string.h>
39 #include <unistd.h>
40
41 #include <activemap.h>
42
43 #include "hast.h"
44 #include "hast_proto.h"
45 #include "metadata.h"
46 #include "nv.h"
47 #include "pjdlog.h"
48 #include "proto.h"
49 #include "subr.h"
50
51 /* Path to configuration file. */
52 static const char *cfgpath = HAST_CONFIG;
53 /* Hastd configuration. */
54 static struct hastd_config *cfg;
55 /* Control connection. */
56 static struct proto_conn *controlconn;
57
58 enum {
59         CMD_INVALID,
60         CMD_CREATE,
61         CMD_ROLE,
62         CMD_STATUS,
63         CMD_DUMP,
64         CMD_LIST
65 };
66
67 static __dead2 void
68 usage(void)
69 {
70
71         fprintf(stderr,
72             "usage: %s create [-d] [-c config] [-e extentsize] [-k keepdirty]\n"
73             "\t\t[-m mediasize] name ...\n",
74             getprogname());
75         fprintf(stderr,
76             "       %s role [-d] [-c config] <init | primary | secondary> all | name ...\n",
77             getprogname());
78         fprintf(stderr,
79             "       %s list [-d] [-c config] [all | name ...]\n",
80             getprogname());
81         fprintf(stderr,
82             "       %s status [-d] [-c config] [all | name ...]\n",
83             getprogname());
84         fprintf(stderr,
85             "       %s dump [-d] [-c config] [all | name ...]\n",
86             getprogname());
87         exit(EX_USAGE);
88 }
89
90 static int
91 create_one(struct hast_resource *res, intmax_t mediasize, intmax_t extentsize,
92     intmax_t keepdirty)
93 {
94         unsigned char *buf;
95         size_t mapsize;
96         int ec;
97
98         ec = 0;
99         pjdlog_prefix_set("[%s] ", res->hr_name);
100
101         if (provinfo(res, true) == -1) {
102                 ec = EX_NOINPUT;
103                 goto end;
104         }
105         if (mediasize == 0)
106                 mediasize = res->hr_local_mediasize;
107         else if (mediasize > res->hr_local_mediasize) {
108                 pjdlog_error("Provided mediasize is larger than provider %s size.",
109                     res->hr_localpath);
110                 ec = EX_DATAERR;
111                 goto end;
112         }
113         if (!powerof2(res->hr_local_sectorsize)) {
114                 pjdlog_error("Sector size of provider %s is not power of 2 (%u).",
115                     res->hr_localpath, res->hr_local_sectorsize);
116                 ec = EX_DATAERR;
117                 goto end;
118         }
119         if (extentsize == 0)
120                 extentsize = HAST_EXTENTSIZE;
121         if (extentsize < res->hr_local_sectorsize) {
122                 pjdlog_error("Extent size (%jd) is less than sector size (%u).",
123                     (intmax_t)extentsize, res->hr_local_sectorsize);
124                 ec = EX_DATAERR;
125                 goto end;
126         }
127         if ((extentsize % res->hr_local_sectorsize) != 0) {
128                 pjdlog_error("Extent size (%jd) is not multiple of sector size (%u).",
129                     (intmax_t)extentsize, res->hr_local_sectorsize);
130                 ec = EX_DATAERR;
131                 goto end;
132         }
133         mapsize = activemap_calc_ondisk_size(mediasize - METADATA_SIZE,
134             extentsize, res->hr_local_sectorsize);
135         if (keepdirty == 0)
136                 keepdirty = HAST_KEEPDIRTY;
137         res->hr_datasize = mediasize - METADATA_SIZE - mapsize;
138         res->hr_extentsize = extentsize;
139         res->hr_keepdirty = keepdirty;
140
141         res->hr_localoff = METADATA_SIZE + mapsize;
142
143         if (metadata_write(res) == -1) {
144                 ec = EX_IOERR;
145                 goto end;
146         }
147         buf = calloc(1, mapsize);
148         if (buf == NULL) {
149                 pjdlog_error("Unable to allocate %zu bytes of memory for initial bitmap.",
150                     mapsize);
151                 ec = EX_TEMPFAIL;
152                 goto end;
153         }
154         if (pwrite(res->hr_localfd, buf, mapsize, METADATA_SIZE) !=
155             (ssize_t)mapsize) {
156                 pjdlog_errno(LOG_ERR, "Unable to store initial bitmap on %s",
157                     res->hr_localpath);
158                 free(buf);
159                 ec = EX_IOERR;
160                 goto end;
161         }
162         free(buf);
163 end:
164         if (res->hr_localfd >= 0)
165                 close(res->hr_localfd);
166         pjdlog_prefix_set("%s", "");
167         return (ec);
168 }
169
170 static void
171 control_create(int argc, char *argv[], intmax_t mediasize, intmax_t extentsize,
172     intmax_t keepdirty)
173 {
174         struct hast_resource *res;
175         int ec, ii, ret;
176
177         /* Initialize the given resources. */
178         if (argc < 1)
179                 usage();
180         ec = 0;
181         for (ii = 0; ii < argc; ii++) {
182                 TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
183                         if (strcmp(argv[ii], res->hr_name) == 0)
184                                 break;
185                 }
186                 if (res == NULL) {
187                         pjdlog_error("Unknown resource %s.", argv[ii]);
188                         if (ec == 0)
189                                 ec = EX_DATAERR;
190                         continue;
191                 }
192                 ret = create_one(res, mediasize, extentsize, keepdirty);
193                 if (ret != 0 && ec == 0)
194                         ec = ret;
195         }
196         exit(ec);
197 }
198
199 static int
200 dump_one(struct hast_resource *res)
201 {
202         int ret;
203
204         ret = metadata_read(res, false);
205         if (ret != 0)
206                 return (ret);
207
208         printf("resource: %s\n", res->hr_name);
209         printf("    datasize: %ju (%NB)\n", (uintmax_t)res->hr_datasize,
210             (intmax_t)res->hr_datasize);
211         printf("    extentsize: %d (%NB)\n", res->hr_extentsize,
212             (intmax_t)res->hr_extentsize);
213         printf("    keepdirty: %d\n", res->hr_keepdirty);
214         printf("    localoff: %ju\n", (uintmax_t)res->hr_localoff);
215         printf("    resuid: %ju\n", (uintmax_t)res->hr_resuid);
216         printf("    localcnt: %ju\n", (uintmax_t)res->hr_primary_localcnt);
217         printf("    remotecnt: %ju\n", (uintmax_t)res->hr_primary_remotecnt);
218         printf("    prevrole: %s\n", role2str(res->hr_previous_role));
219
220         return (0);
221 }
222
223 static void
224 control_dump(int argc, char *argv[])
225 {
226         struct hast_resource *res;
227         int ec, ret;
228
229         /* Dump metadata of the given resource(s). */
230
231         ec = 0;
232         if (argc == 0 || (argc == 1 && strcmp(argv[0], "all") == 0)) {
233                 TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
234                         ret = dump_one(res);
235                         if (ret != 0 && ec == 0)
236                                 ec = ret;
237                 }
238         } else {
239                 int ii;
240
241                 for (ii = 0; ii < argc; ii++) {
242                         TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) {
243                                 if (strcmp(argv[ii], res->hr_name) == 0)
244                                         break;
245                         }
246                         if (res == NULL) {
247                                 pjdlog_error("Unknown resource %s.", argv[ii]);
248                                 if (ec == 0)
249                                         ec = EX_DATAERR;
250                                 continue;
251                         }
252                         ret = dump_one(res);
253                         if (ret != 0 && ec == 0)
254                                 ec = ret;
255                 }
256         }
257         exit(ec);
258 }
259
260 static int
261 control_set_role(struct nv *nv, const char *newrole)
262 {
263         const char *res, *oldrole;
264         unsigned int ii;
265         int error, ret;
266
267         ret = 0;
268
269         for (ii = 0; ; ii++) {
270                 res = nv_get_string(nv, "resource%u", ii);
271                 if (res == NULL)
272                         break;
273                 pjdlog_prefix_set("[%s] ", res);
274                 error = nv_get_int16(nv, "error%u", ii);
275                 if (error != 0) {
276                         if (ret == 0)
277                                 ret = error;
278                         pjdlog_warning("Received error %d from hastd.", error);
279                         continue;
280                 }
281                 oldrole = nv_get_string(nv, "role%u", ii);
282                 if (strcmp(oldrole, newrole) == 0)
283                         pjdlog_debug(2, "Role unchanged (%s).", oldrole);
284                 else {
285                         pjdlog_debug(1, "Role changed from %s to %s.", oldrole,
286                             newrole);
287                 }
288         }
289         pjdlog_prefix_set("%s", "");
290         return (ret);
291 }
292
293 static int
294 control_list(struct nv *nv)
295 {
296         pid_t pid;
297         unsigned int ii;
298         const char *str;
299         int error, ret;
300
301         ret = 0;
302
303         for (ii = 0; ; ii++) {
304                 str = nv_get_string(nv, "resource%u", ii);
305                 if (str == NULL)
306                         break;
307                 printf("%s:\n", str);
308                 error = nv_get_int16(nv, "error%u", ii);
309                 if (error != 0) {
310                         if (ret == 0)
311                                 ret = error;
312                         printf("  error: %d\n", error);
313                         continue;
314                 }
315                 printf("  role: %s\n", nv_get_string(nv, "role%u", ii));
316                 printf("  provname: %s\n",
317                     nv_get_string(nv, "provname%u", ii));
318                 printf("  localpath: %s\n",
319                     nv_get_string(nv, "localpath%u", ii));
320                 printf("  extentsize: %u (%NB)\n",
321                     (unsigned int)nv_get_uint32(nv, "extentsize%u", ii),
322                     (intmax_t)nv_get_uint32(nv, "extentsize%u", ii));
323                 printf("  keepdirty: %u\n",
324                     (unsigned int)nv_get_uint32(nv, "keepdirty%u", ii));
325                 printf("  remoteaddr: %s\n",
326                     nv_get_string(nv, "remoteaddr%u", ii));
327                 str = nv_get_string(nv, "sourceaddr%u", ii);
328                 if (str != NULL)
329                         printf("  sourceaddr: %s\n", str);
330                 printf("  replication: %s\n",
331                     nv_get_string(nv, "replication%u", ii));
332                 str = nv_get_string(nv, "status%u", ii);
333                 if (str != NULL)
334                         printf("  status: %s\n", str);
335                 pid = nv_get_int32(nv, "workerpid%u", ii);
336                 if (pid != 0)
337                         printf("  workerpid: %d\n", pid);
338                 printf("  dirty: %ju (%NB)\n",
339                     (uintmax_t)nv_get_uint64(nv, "dirty%u", ii),
340                     (intmax_t)nv_get_uint64(nv, "dirty%u", ii));
341                 printf("  statistics:\n");
342                 printf("    reads: %ju\n",
343                     (uintmax_t)nv_get_uint64(nv, "stat_read%u", ii));
344                 printf("    writes: %ju\n",
345                     (uintmax_t)nv_get_uint64(nv, "stat_write%u", ii));
346                 printf("    deletes: %ju\n",
347                     (uintmax_t)nv_get_uint64(nv, "stat_delete%u", ii));
348                 printf("    flushes: %ju\n",
349                     (uintmax_t)nv_get_uint64(nv, "stat_flush%u", ii));
350                 printf("    activemap updates: %ju\n",
351                     (uintmax_t)nv_get_uint64(nv, "stat_activemap_update%u", ii));
352                 printf("    local errors: "
353                     "read: %ju, write: %ju, delete: %ju, flush: %ju\n",
354                     (uintmax_t)nv_get_uint64(nv, "stat_read_error%u", ii),
355                     (uintmax_t)nv_get_uint64(nv, "stat_write_error%u", ii),
356                     (uintmax_t)nv_get_uint64(nv, "stat_delete_error%u", ii),
357                     (uintmax_t)nv_get_uint64(nv, "stat_flush_error%u", ii));
358         }
359         return (ret);
360 }
361
362 static int
363 control_status(struct nv *nv)
364 {
365         unsigned int ii;
366         const char *str;
367         int error, hprinted, ret;
368
369         hprinted = 0;
370         ret = 0;
371
372         for (ii = 0; ; ii++) {
373                 str = nv_get_string(nv, "resource%u", ii);
374                 if (str == NULL)
375                         break;
376                 if (!hprinted) {
377                         printf("Name\tStatus\t Role\t\tComponents\n");
378                         hprinted = 1;
379                 }
380                 printf("%s\t", str);
381                 error = nv_get_int16(nv, "error%u", ii);
382                 if (error != 0) {
383                         if (ret == 0)
384                                 ret = error;
385                         printf("ERR%d\n", error);
386                         continue;
387                 }
388                 str = nv_get_string(nv, "status%u", ii);
389                 printf("%-9s", (str != NULL) ? str : "-");
390                 printf("%-15s", nv_get_string(nv, "role%u", ii));
391                 printf("%s\t",
392                     nv_get_string(nv, "localpath%u", ii));
393                 printf("%s\n",
394                     nv_get_string(nv, "remoteaddr%u", ii));
395         }
396         return (ret);
397 }
398
399 int
400 main(int argc, char *argv[])
401 {
402         struct nv *nv;
403         int64_t mediasize, extentsize, keepdirty;
404         int cmd, debug, error, ii;
405         const char *optstr;
406
407         debug = 0;
408         mediasize = extentsize = keepdirty = 0;
409
410         if (argc == 1)
411                 usage();
412
413         if (strcmp(argv[1], "create") == 0) {
414                 cmd = CMD_CREATE;
415                 optstr = "c:de:k:m:h";
416         } else if (strcmp(argv[1], "role") == 0) {
417                 cmd = CMD_ROLE;
418                 optstr = "c:dh";
419         } else if (strcmp(argv[1], "list") == 0) {
420                 cmd = CMD_LIST;
421                 optstr = "c:dh";
422         } else if (strcmp(argv[1], "status") == 0) {
423                 cmd = CMD_STATUS;
424                 optstr = "c:dh";
425         } else if (strcmp(argv[1], "dump") == 0) {
426                 cmd = CMD_DUMP;
427                 optstr = "c:dh";
428         } else
429                 usage();
430
431         argc--;
432         argv++;
433
434         for (;;) {
435                 int ch;
436
437                 ch = getopt(argc, argv, optstr);
438                 if (ch == -1)
439                         break;
440                 switch (ch) {
441                 case 'c':
442                         cfgpath = optarg;
443                         break;
444                 case 'd':
445                         debug++;
446                         break;
447                 case 'e':
448                         if (expand_number(optarg, &extentsize) == -1)
449                                 errx(EX_USAGE, "Invalid extentsize");
450                         break;
451                 case 'k':
452                         if (expand_number(optarg, &keepdirty) == -1)
453                                 errx(EX_USAGE, "Invalid keepdirty");
454                         break;
455                 case 'm':
456                         if (expand_number(optarg, &mediasize) == -1)
457                                 errx(EX_USAGE, "Invalid mediasize");
458                         break;
459                 case 'h':
460                 default:
461                         usage();
462                 }
463         }
464         argc -= optind;
465         argv += optind;
466
467         switch (cmd) {
468         case CMD_CREATE:
469         case CMD_ROLE:
470                 if (argc == 0)
471                         usage();
472                 break;
473         }
474
475         pjdlog_init(PJDLOG_MODE_STD);
476         pjdlog_debug_set(debug);
477
478         cfg = yy_config_parse(cfgpath, true);
479         PJDLOG_ASSERT(cfg != NULL);
480
481         switch (cmd) {
482         case CMD_CREATE:
483                 control_create(argc, argv, mediasize, extentsize, keepdirty);
484                 /* NOTREACHED */
485                 PJDLOG_ABORT("What are we doing here?!");
486                 break;
487         case CMD_DUMP:
488                 /* Dump metadata from local component of the given resource. */
489                 control_dump(argc, argv);
490                 /* NOTREACHED */
491                 PJDLOG_ABORT("What are we doing here?!");
492                 break;
493         case CMD_ROLE:
494                 /* Change role for the given resources. */
495                 if (argc < 2)
496                         usage();
497                 nv = nv_alloc();
498                 nv_add_uint8(nv, HASTCTL_CMD_SETROLE, "cmd");
499                 if (strcmp(argv[0], "init") == 0)
500                         nv_add_uint8(nv, HAST_ROLE_INIT, "role");
501                 else if (strcmp(argv[0], "primary") == 0)
502                         nv_add_uint8(nv, HAST_ROLE_PRIMARY, "role");
503                 else if (strcmp(argv[0], "secondary") == 0)
504                         nv_add_uint8(nv, HAST_ROLE_SECONDARY, "role");
505                 else
506                         usage();
507                 for (ii = 0; ii < argc - 1; ii++)
508                         nv_add_string(nv, argv[ii + 1], "resource%d", ii);
509                 break;
510         case CMD_LIST:
511         case CMD_STATUS:
512                 /* Obtain status of the given resources. */
513                 nv = nv_alloc();
514                 nv_add_uint8(nv, HASTCTL_CMD_STATUS, "cmd");
515                 if (argc == 0)
516                         nv_add_string(nv, "all", "resource%d", 0);
517                 else {
518                         for (ii = 0; ii < argc; ii++)
519                                 nv_add_string(nv, argv[ii], "resource%d", ii);
520                 }
521                 break;
522         default:
523                 PJDLOG_ABORT("Impossible command!");
524         }
525
526         /* Setup control connection... */
527         if (proto_client(NULL, cfg->hc_controladdr, &controlconn) == -1) {
528                 pjdlog_exit(EX_OSERR,
529                     "Unable to setup control connection to %s",
530                     cfg->hc_controladdr);
531         }
532         /* ...and connect to hastd. */
533         if (proto_connect(controlconn, HAST_TIMEOUT) == -1) {
534                 pjdlog_exit(EX_OSERR, "Unable to connect to hastd via %s",
535                     cfg->hc_controladdr);
536         }
537
538         if (drop_privs(NULL) != 0)
539                 exit(EX_CONFIG);
540
541         /* Send the command to the server... */
542         if (hast_proto_send(NULL, controlconn, nv, NULL, 0) == -1) {
543                 pjdlog_exit(EX_UNAVAILABLE,
544                     "Unable to send command to hastd via %s",
545                     cfg->hc_controladdr);
546         }
547         nv_free(nv);
548         /* ...and receive reply. */
549         if (hast_proto_recv_hdr(controlconn, &nv) == -1) {
550                 pjdlog_exit(EX_UNAVAILABLE,
551                     "cannot receive reply from hastd via %s",
552                     cfg->hc_controladdr);
553         }
554
555         error = nv_get_int16(nv, "error");
556         if (error != 0) {
557                 pjdlog_exitx(EX_SOFTWARE, "Error %d received from hastd.",
558                     error);
559         }
560         nv_set_error(nv, 0);
561
562         switch (cmd) {
563         case CMD_ROLE:
564                 error = control_set_role(nv, argv[0]);
565                 break;
566         case CMD_LIST:
567                 error = control_list(nv);
568                 break;
569         case CMD_STATUS:
570                 error = control_status(nv);
571                 break;
572         default:
573                 PJDLOG_ABORT("Impossible command!");
574         }
575
576         exit(error);
577 }