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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/lov/lov_obd.c | |
37 | * | |
38 | * Author: Phil Schwan <phil@clusterfs.com> | |
39 | * Author: Peter Braam <braam@clusterfs.com> | |
40 | * Author: Mike Shaver <shaver@clusterfs.com> | |
41 | * Author: Nathan Rutman <nathan@clusterfs.com> | |
42 | */ | |
43 | ||
44 | #define DEBUG_SUBSYSTEM S_LOV | |
45 | #include <linux/libcfs/libcfs.h> | |
46 | ||
47 | #include <obd_support.h> | |
48 | #include <lustre_lib.h> | |
49 | #include <lustre_net.h> | |
50 | #include <lustre/lustre_idl.h> | |
51 | #include <lustre_dlm.h> | |
52 | #include <lustre_mds.h> | |
53 | #include <lustre_debug.h> | |
54 | #include <obd_class.h> | |
55 | #include <obd_lov.h> | |
56 | #include <obd_ost.h> | |
57 | #include <lprocfs_status.h> | |
58 | #include <lustre_param.h> | |
59 | #include <cl_object.h> | |
c52f69c5 | 60 | #include <lclient.h> /* for cl_client_lru */ |
d7e09d03 PT |
61 | #include <lustre/ll_fiemap.h> |
62 | #include <lustre_log.h> | |
63 | #include <lustre_fid.h> | |
64 | ||
65 | #include "lov_internal.h" | |
66 | ||
67 | /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion. | |
68 | Any function that expects lov_tgts to remain stationary must take a ref. */ | |
69 | static void lov_getref(struct obd_device *obd) | |
70 | { | |
71 | struct lov_obd *lov = &obd->u.lov; | |
72 | ||
73 | /* nobody gets through here until lov_putref is done */ | |
74 | mutex_lock(&lov->lov_lock); | |
75 | atomic_inc(&lov->lov_refcount); | |
76 | mutex_unlock(&lov->lov_lock); | |
77 | return; | |
78 | } | |
79 | ||
80 | static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt); | |
81 | ||
82 | static void lov_putref(struct obd_device *obd) | |
83 | { | |
84 | struct lov_obd *lov = &obd->u.lov; | |
85 | ||
86 | mutex_lock(&lov->lov_lock); | |
87 | /* ok to dec to 0 more than once -- ltd_exp's will be null */ | |
88 | if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) { | |
89 | LIST_HEAD(kill); | |
90 | int i; | |
91 | struct lov_tgt_desc *tgt, *n; | |
92 | CDEBUG(D_CONFIG, "destroying %d lov targets\n", | |
93 | lov->lov_death_row); | |
94 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
95 | tgt = lov->lov_tgts[i]; | |
96 | ||
97 | if (!tgt || !tgt->ltd_reap) | |
98 | continue; | |
99 | list_add(&tgt->ltd_kill, &kill); | |
100 | /* XXX - right now there is a dependency on ld_tgt_count | |
101 | * being the maximum tgt index for computing the | |
102 | * mds_max_easize. So we can't shrink it. */ | |
103 | lov_ost_pool_remove(&lov->lov_packed, i); | |
104 | lov->lov_tgts[i] = NULL; | |
105 | lov->lov_death_row--; | |
106 | } | |
107 | mutex_unlock(&lov->lov_lock); | |
108 | ||
109 | list_for_each_entry_safe(tgt, n, &kill, ltd_kill) { | |
110 | list_del(&tgt->ltd_kill); | |
111 | /* Disconnect */ | |
112 | __lov_del_obd(obd, tgt); | |
113 | } | |
114 | } else { | |
115 | mutex_unlock(&lov->lov_lock); | |
116 | } | |
117 | } | |
118 | ||
119 | static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, | |
120 | enum obd_notify_event ev); | |
121 | static int lov_notify(struct obd_device *obd, struct obd_device *watched, | |
122 | enum obd_notify_event ev, void *data); | |
123 | ||
124 | ||
125 | #define MAX_STRING_SIZE 128 | |
126 | int lov_connect_obd(struct obd_device *obd, __u32 index, int activate, | |
127 | struct obd_connect_data *data) | |
128 | { | |
129 | struct lov_obd *lov = &obd->u.lov; | |
130 | struct obd_uuid *tgt_uuid; | |
131 | struct obd_device *tgt_obd; | |
132 | static struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" }; | |
133 | struct obd_import *imp; | |
134 | proc_dir_entry_t *lov_proc_dir; | |
135 | int rc; | |
d7e09d03 PT |
136 | |
137 | if (!lov->lov_tgts[index]) | |
0a3bdb00 | 138 | return -EINVAL; |
d7e09d03 PT |
139 | |
140 | tgt_uuid = &lov->lov_tgts[index]->ltd_uuid; | |
141 | tgt_obd = lov->lov_tgts[index]->ltd_obd; | |
142 | ||
143 | if (!tgt_obd->obd_set_up) { | |
144 | CERROR("Target %s not set up\n", obd_uuid2str(tgt_uuid)); | |
0a3bdb00 | 145 | return -EINVAL; |
d7e09d03 PT |
146 | } |
147 | ||
148 | /* override the sp_me from lov */ | |
149 | tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me; | |
150 | ||
151 | if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX)) | |
152 | data->ocd_index = index; | |
153 | ||
154 | /* | |
155 | * Divine LOV knows that OBDs under it are OSCs. | |
156 | */ | |
157 | imp = tgt_obd->u.cli.cl_import; | |
158 | ||
159 | if (activate) { | |
160 | tgt_obd->obd_no_recov = 0; | |
161 | /* FIXME this is probably supposed to be | |
162 | ptlrpc_set_import_active. Horrible naming. */ | |
163 | ptlrpc_activate_import(imp); | |
164 | } | |
165 | ||
166 | rc = obd_register_observer(tgt_obd, obd); | |
167 | if (rc) { | |
168 | CERROR("Target %s register_observer error %d\n", | |
169 | obd_uuid2str(tgt_uuid), rc); | |
0a3bdb00 | 170 | return rc; |
d7e09d03 PT |
171 | } |
172 | ||
173 | ||
174 | if (imp->imp_invalid) { | |
175 | CDEBUG(D_CONFIG, "not connecting OSC %s; administratively " | |
176 | "disabled\n", obd_uuid2str(tgt_uuid)); | |
0a3bdb00 | 177 | return 0; |
d7e09d03 PT |
178 | } |
179 | ||
180 | rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd, | |
181 | &lov_osc_uuid, data, NULL); | |
182 | if (rc || !lov->lov_tgts[index]->ltd_exp) { | |
183 | CERROR("Target %s connect error %d\n", | |
184 | obd_uuid2str(tgt_uuid), rc); | |
0a3bdb00 | 185 | return -ENODEV; |
d7e09d03 PT |
186 | } |
187 | ||
188 | lov->lov_tgts[index]->ltd_reap = 0; | |
189 | ||
190 | CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index, | |
191 | obd_uuid2str(tgt_uuid), tgt_obd->obd_name, activate ? "":"in"); | |
192 | ||
73bb1da6 | 193 | lov_proc_dir = obd->obd_proc_private; |
d7e09d03 PT |
194 | if (lov_proc_dir) { |
195 | struct obd_device *osc_obd = lov->lov_tgts[index]->ltd_exp->exp_obd; | |
196 | proc_dir_entry_t *osc_symlink; | |
197 | ||
198 | LASSERT(osc_obd != NULL); | |
199 | LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC); | |
200 | LASSERT(osc_obd->obd_type->typ_name != NULL); | |
201 | ||
202 | osc_symlink = lprocfs_add_symlink(osc_obd->obd_name, | |
203 | lov_proc_dir, | |
204 | "../../../%s/%s", | |
205 | osc_obd->obd_type->typ_name, | |
206 | osc_obd->obd_name); | |
207 | if (osc_symlink == NULL) { | |
208 | CERROR("could not register LOV target " | |
209 | "/proc/fs/lustre/%s/%s/target_obds/%s.", | |
210 | obd->obd_type->typ_name, obd->obd_name, | |
211 | osc_obd->obd_name); | |
212 | lprocfs_remove(&lov_proc_dir); | |
73bb1da6 | 213 | obd->obd_proc_private = NULL; |
d7e09d03 PT |
214 | } |
215 | } | |
216 | ||
0a3bdb00 | 217 | return 0; |
d7e09d03 PT |
218 | } |
219 | ||
220 | static int lov_connect(const struct lu_env *env, | |
221 | struct obd_export **exp, struct obd_device *obd, | |
222 | struct obd_uuid *cluuid, struct obd_connect_data *data, | |
223 | void *localdata) | |
224 | { | |
225 | struct lov_obd *lov = &obd->u.lov; | |
226 | struct lov_tgt_desc *tgt; | |
227 | struct lustre_handle conn; | |
228 | int i, rc; | |
d7e09d03 PT |
229 | |
230 | CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects); | |
231 | ||
232 | rc = class_connect(&conn, obd, cluuid); | |
233 | if (rc) | |
0a3bdb00 | 234 | return rc; |
d7e09d03 PT |
235 | |
236 | *exp = class_conn2export(&conn); | |
237 | ||
238 | /* Why should there ever be more than 1 connect? */ | |
239 | lov->lov_connects++; | |
240 | LASSERT(lov->lov_connects == 1); | |
241 | ||
242 | memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd)); | |
243 | if (data) | |
244 | lov->lov_ocd = *data; | |
245 | ||
246 | obd_getref(obd); | |
247 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
248 | tgt = lov->lov_tgts[i]; | |
249 | if (!tgt || obd_uuid_empty(&tgt->ltd_uuid)) | |
250 | continue; | |
251 | /* Flags will be lowest common denominator */ | |
252 | rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd); | |
253 | if (rc) { | |
254 | CERROR("%s: lov connect tgt %d failed: %d\n", | |
255 | obd->obd_name, i, rc); | |
256 | continue; | |
257 | } | |
258 | /* connect to administrative disabled ost */ | |
259 | if (!lov->lov_tgts[i]->ltd_exp) | |
260 | continue; | |
261 | ||
262 | rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd, | |
263 | OBD_NOTIFY_CONNECT, (void *)&i); | |
264 | if (rc) { | |
265 | CERROR("%s error sending notify %d\n", | |
266 | obd->obd_name, rc); | |
267 | } | |
268 | } | |
269 | obd_putref(obd); | |
270 | ||
0a3bdb00 | 271 | return 0; |
d7e09d03 PT |
272 | } |
273 | ||
274 | static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) | |
275 | { | |
276 | proc_dir_entry_t *lov_proc_dir; | |
277 | struct lov_obd *lov = &obd->u.lov; | |
278 | struct obd_device *osc_obd; | |
279 | int rc; | |
d7e09d03 PT |
280 | |
281 | osc_obd = class_exp2obd(tgt->ltd_exp); | |
282 | CDEBUG(D_CONFIG, "%s: disconnecting target %s\n", | |
283 | obd->obd_name, osc_obd->obd_name); | |
284 | ||
285 | if (tgt->ltd_active) { | |
286 | tgt->ltd_active = 0; | |
287 | lov->desc.ld_active_tgt_count--; | |
288 | tgt->ltd_exp->exp_obd->obd_inactive = 1; | |
289 | } | |
290 | ||
73bb1da6 PT |
291 | lov_proc_dir = obd->obd_proc_private; |
292 | if (lov_proc_dir) | |
293 | lprocfs_remove_proc_entry(osc_obd->obd_name, lov_proc_dir); | |
d7e09d03 PT |
294 | |
295 | if (osc_obd) { | |
296 | /* Pass it on to our clients. | |
297 | * XXX This should be an argument to disconnect, | |
298 | * XXX not a back-door flag on the OBD. Ah well. | |
299 | */ | |
300 | osc_obd->obd_force = obd->obd_force; | |
301 | osc_obd->obd_fail = obd->obd_fail; | |
302 | osc_obd->obd_no_recov = obd->obd_no_recov; | |
303 | } | |
304 | ||
305 | obd_register_observer(osc_obd, NULL); | |
306 | ||
307 | rc = obd_disconnect(tgt->ltd_exp); | |
308 | if (rc) { | |
309 | CERROR("Target %s disconnect error %d\n", | |
310 | tgt->ltd_uuid.uuid, rc); | |
311 | rc = 0; | |
312 | } | |
313 | ||
314 | tgt->ltd_exp = NULL; | |
0a3bdb00 | 315 | return 0; |
d7e09d03 PT |
316 | } |
317 | ||
318 | static int lov_disconnect(struct obd_export *exp) | |
319 | { | |
320 | struct obd_device *obd = class_exp2obd(exp); | |
321 | struct lov_obd *lov = &obd->u.lov; | |
322 | int i, rc; | |
d7e09d03 PT |
323 | |
324 | if (!lov->lov_tgts) | |
325 | goto out; | |
326 | ||
327 | /* Only disconnect the underlying layers on the final disconnect. */ | |
328 | lov->lov_connects--; | |
329 | if (lov->lov_connects != 0) { | |
330 | /* why should there be more than 1 connect? */ | |
331 | CERROR("disconnect #%d\n", lov->lov_connects); | |
332 | goto out; | |
333 | } | |
334 | ||
335 | /* Let's hold another reference so lov_del_obd doesn't spin through | |
336 | putref every time */ | |
337 | obd_getref(obd); | |
338 | ||
339 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
340 | if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) { | |
341 | /* Disconnection is the last we know about an obd */ | |
342 | lov_del_target(obd, i, 0, lov->lov_tgts[i]->ltd_gen); | |
343 | } | |
344 | } | |
345 | obd_putref(obd); | |
346 | ||
347 | out: | |
348 | rc = class_disconnect(exp); /* bz 9811 */ | |
0a3bdb00 | 349 | return rc; |
d7e09d03 PT |
350 | } |
351 | ||
352 | /* Error codes: | |
353 | * | |
354 | * -EINVAL : UUID can't be found in the LOV's target list | |
355 | * -ENOTCONN: The UUID is found, but the target connection is bad (!) | |
356 | * -EBADF : The UUID is found, but the OBD is the wrong type (!) | |
357 | * any >= 0 : is log target index | |
358 | */ | |
359 | static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, | |
360 | enum obd_notify_event ev) | |
361 | { | |
362 | struct lov_obd *lov = &obd->u.lov; | |
363 | struct lov_tgt_desc *tgt; | |
364 | int index, activate, active; | |
d7e09d03 PT |
365 | |
366 | CDEBUG(D_INFO, "Searching in lov %p for uuid %s event(%d)\n", | |
367 | lov, uuid->uuid, ev); | |
368 | ||
369 | obd_getref(obd); | |
370 | for (index = 0; index < lov->desc.ld_tgt_count; index++) { | |
371 | tgt = lov->lov_tgts[index]; | |
372 | if (!tgt) | |
373 | continue; | |
374 | /* | |
375 | * LU-642, initially inactive OSC could miss the obd_connect, | |
376 | * we make up for it here. | |
377 | */ | |
378 | if (ev == OBD_NOTIFY_ACTIVATE && tgt->ltd_exp == NULL && | |
379 | obd_uuid_equals(uuid, &tgt->ltd_uuid)) { | |
380 | struct obd_uuid lov_osc_uuid = {"LOV_OSC_UUID"}; | |
381 | ||
382 | obd_connect(NULL, &tgt->ltd_exp, tgt->ltd_obd, | |
383 | &lov_osc_uuid, &lov->lov_ocd, NULL); | |
384 | } | |
385 | if (!tgt->ltd_exp) | |
386 | continue; | |
387 | ||
388 | CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n", | |
389 | index, obd_uuid2str(&tgt->ltd_uuid), | |
390 | tgt->ltd_exp->exp_handle.h_cookie); | |
391 | if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) | |
392 | break; | |
393 | } | |
394 | ||
395 | if (index == lov->desc.ld_tgt_count) | |
396 | GOTO(out, index = -EINVAL); | |
397 | ||
398 | if (ev == OBD_NOTIFY_DEACTIVATE || ev == OBD_NOTIFY_ACTIVATE) { | |
399 | activate = (ev == OBD_NOTIFY_ACTIVATE) ? 1 : 0; | |
400 | ||
401 | if (lov->lov_tgts[index]->ltd_activate == activate) { | |
402 | CDEBUG(D_INFO, "OSC %s already %sactivate!\n", | |
403 | uuid->uuid, activate ? "" : "de"); | |
404 | } else { | |
405 | lov->lov_tgts[index]->ltd_activate = activate; | |
406 | CDEBUG(D_CONFIG, "%sactivate OSC %s\n", | |
407 | activate ? "" : "de", obd_uuid2str(uuid)); | |
408 | } | |
409 | ||
410 | } else if (ev == OBD_NOTIFY_INACTIVE || ev == OBD_NOTIFY_ACTIVE) { | |
411 | active = (ev == OBD_NOTIFY_ACTIVE) ? 1 : 0; | |
412 | ||
413 | if (lov->lov_tgts[index]->ltd_active == active) { | |
414 | CDEBUG(D_INFO, "OSC %s already %sactive!\n", | |
415 | uuid->uuid, active ? "" : "in"); | |
416 | GOTO(out, index); | |
417 | } else { | |
418 | CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", | |
419 | obd_uuid2str(uuid), active ? "" : "in"); | |
420 | } | |
421 | ||
422 | lov->lov_tgts[index]->ltd_active = active; | |
423 | if (active) { | |
424 | lov->desc.ld_active_tgt_count++; | |
425 | lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0; | |
426 | } else { | |
427 | lov->desc.ld_active_tgt_count--; | |
428 | lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1; | |
429 | } | |
430 | } else { | |
431 | CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid); | |
432 | } | |
433 | ||
434 | out: | |
435 | obd_putref(obd); | |
0a3bdb00 | 436 | return index; |
d7e09d03 PT |
437 | } |
438 | ||
439 | static int lov_notify(struct obd_device *obd, struct obd_device *watched, | |
440 | enum obd_notify_event ev, void *data) | |
441 | { | |
442 | int rc = 0; | |
443 | struct lov_obd *lov = &obd->u.lov; | |
d7e09d03 PT |
444 | |
445 | down_read(&lov->lov_notify_lock); | |
446 | if (!lov->lov_connects) { | |
447 | up_read(&lov->lov_notify_lock); | |
0a3bdb00 | 448 | return rc; |
d7e09d03 PT |
449 | } |
450 | ||
451 | if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE || | |
452 | ev == OBD_NOTIFY_ACTIVATE || ev == OBD_NOTIFY_DEACTIVATE) { | |
453 | struct obd_uuid *uuid; | |
454 | ||
455 | LASSERT(watched); | |
456 | ||
457 | if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) { | |
458 | up_read(&lov->lov_notify_lock); | |
459 | CERROR("unexpected notification of %s %s!\n", | |
460 | watched->obd_type->typ_name, | |
461 | watched->obd_name); | |
0a3bdb00 | 462 | return -EINVAL; |
d7e09d03 PT |
463 | } |
464 | uuid = &watched->u.cli.cl_target_uuid; | |
465 | ||
466 | /* Set OSC as active before notifying the observer, so the | |
467 | * observer can use the OSC normally. | |
468 | */ | |
469 | rc = lov_set_osc_active(obd, uuid, ev); | |
470 | if (rc < 0) { | |
471 | up_read(&lov->lov_notify_lock); | |
472 | CERROR("event(%d) of %s failed: %d\n", ev, | |
473 | obd_uuid2str(uuid), rc); | |
0a3bdb00 | 474 | return rc; |
d7e09d03 PT |
475 | } |
476 | /* active event should be pass lov target index as data */ | |
477 | data = &rc; | |
478 | } | |
479 | ||
480 | /* Pass the notification up the chain. */ | |
481 | if (watched) { | |
482 | rc = obd_notify_observer(obd, watched, ev, data); | |
483 | } else { | |
484 | /* NULL watched means all osc's in the lov (only for syncs) */ | |
485 | /* sync event should be send lov idx as data */ | |
486 | struct lov_obd *lov = &obd->u.lov; | |
487 | int i, is_sync; | |
488 | ||
489 | data = &i; | |
490 | is_sync = (ev == OBD_NOTIFY_SYNC) || | |
491 | (ev == OBD_NOTIFY_SYNC_NONBLOCK); | |
492 | ||
493 | obd_getref(obd); | |
494 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
495 | if (!lov->lov_tgts[i]) | |
496 | continue; | |
497 | ||
498 | /* don't send sync event if target not | |
499 | * connected/activated */ | |
500 | if (is_sync && !lov->lov_tgts[i]->ltd_active) | |
501 | continue; | |
502 | ||
503 | rc = obd_notify_observer(obd, lov->lov_tgts[i]->ltd_obd, | |
504 | ev, data); | |
505 | if (rc) { | |
506 | CERROR("%s: notify %s of %s failed %d\n", | |
507 | obd->obd_name, | |
508 | obd->obd_observer->obd_name, | |
509 | lov->lov_tgts[i]->ltd_obd->obd_name, | |
510 | rc); | |
511 | } | |
512 | } | |
513 | obd_putref(obd); | |
514 | } | |
515 | ||
516 | up_read(&lov->lov_notify_lock); | |
0a3bdb00 | 517 | return rc; |
d7e09d03 PT |
518 | } |
519 | ||
520 | static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp, | |
521 | __u32 index, int gen, int active) | |
522 | { | |
523 | struct lov_obd *lov = &obd->u.lov; | |
524 | struct lov_tgt_desc *tgt; | |
525 | struct obd_device *tgt_obd; | |
526 | int rc; | |
d7e09d03 PT |
527 | |
528 | CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n", | |
529 | uuidp->uuid, index, gen, active); | |
530 | ||
531 | if (gen <= 0) { | |
532 | CERROR("request to add OBD %s with invalid generation: %d\n", | |
533 | uuidp->uuid, gen); | |
0a3bdb00 | 534 | return -EINVAL; |
d7e09d03 PT |
535 | } |
536 | ||
537 | tgt_obd = class_find_client_obd(uuidp, LUSTRE_OSC_NAME, | |
538 | &obd->obd_uuid); | |
539 | if (tgt_obd == NULL) | |
0a3bdb00 | 540 | return -EINVAL; |
d7e09d03 PT |
541 | |
542 | mutex_lock(&lov->lov_lock); | |
543 | ||
544 | if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) { | |
545 | tgt = lov->lov_tgts[index]; | |
546 | CERROR("UUID %s already assigned at LOV target index %d\n", | |
547 | obd_uuid2str(&tgt->ltd_uuid), index); | |
548 | mutex_unlock(&lov->lov_lock); | |
0a3bdb00 | 549 | return -EEXIST; |
d7e09d03 PT |
550 | } |
551 | ||
552 | if (index >= lov->lov_tgt_size) { | |
553 | /* We need to reallocate the lov target array. */ | |
554 | struct lov_tgt_desc **newtgts, **old = NULL; | |
555 | __u32 newsize, oldsize = 0; | |
556 | ||
557 | newsize = max(lov->lov_tgt_size, (__u32)2); | |
558 | while (newsize < index + 1) | |
559 | newsize = newsize << 1; | |
560 | OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize); | |
561 | if (newtgts == NULL) { | |
562 | mutex_unlock(&lov->lov_lock); | |
0a3bdb00 | 563 | return -ENOMEM; |
d7e09d03 PT |
564 | } |
565 | ||
566 | if (lov->lov_tgt_size) { | |
567 | memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) * | |
568 | lov->lov_tgt_size); | |
569 | old = lov->lov_tgts; | |
570 | oldsize = lov->lov_tgt_size; | |
571 | } | |
572 | ||
573 | lov->lov_tgts = newtgts; | |
574 | lov->lov_tgt_size = newsize; | |
575 | smp_rmb(); | |
576 | if (old) | |
577 | OBD_FREE(old, sizeof(*old) * oldsize); | |
578 | ||
579 | CDEBUG(D_CONFIG, "tgts: %p size: %d\n", | |
580 | lov->lov_tgts, lov->lov_tgt_size); | |
581 | } | |
582 | ||
583 | OBD_ALLOC_PTR(tgt); | |
584 | if (!tgt) { | |
585 | mutex_unlock(&lov->lov_lock); | |
0a3bdb00 | 586 | return -ENOMEM; |
d7e09d03 PT |
587 | } |
588 | ||
589 | rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size); | |
590 | if (rc) { | |
591 | mutex_unlock(&lov->lov_lock); | |
592 | OBD_FREE_PTR(tgt); | |
0a3bdb00 | 593 | return rc; |
d7e09d03 PT |
594 | } |
595 | ||
596 | tgt->ltd_uuid = *uuidp; | |
597 | tgt->ltd_obd = tgt_obd; | |
598 | /* XXX - add a sanity check on the generation number. */ | |
599 | tgt->ltd_gen = gen; | |
600 | tgt->ltd_index = index; | |
601 | tgt->ltd_activate = active; | |
602 | lov->lov_tgts[index] = tgt; | |
603 | if (index >= lov->desc.ld_tgt_count) | |
604 | lov->desc.ld_tgt_count = index + 1; | |
605 | ||
606 | mutex_unlock(&lov->lov_lock); | |
607 | ||
608 | CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n", | |
609 | index, tgt->ltd_gen, lov->desc.ld_tgt_count); | |
610 | ||
611 | rc = obd_notify(obd, tgt_obd, OBD_NOTIFY_CREATE, &index); | |
612 | ||
613 | if (lov->lov_connects == 0) { | |
614 | /* lov_connect hasn't been called yet. We'll do the | |
615 | lov_connect_obd on this target when that fn first runs, | |
616 | because we don't know the connect flags yet. */ | |
0a3bdb00 | 617 | return 0; |
d7e09d03 PT |
618 | } |
619 | ||
620 | obd_getref(obd); | |
621 | ||
622 | rc = lov_connect_obd(obd, index, active, &lov->lov_ocd); | |
623 | if (rc) | |
624 | GOTO(out, rc); | |
625 | ||
626 | /* connect to administrative disabled ost */ | |
627 | if (!tgt->ltd_exp) | |
628 | GOTO(out, rc = 0); | |
629 | ||
630 | if (lov->lov_cache != NULL) { | |
631 | rc = obd_set_info_async(NULL, tgt->ltd_exp, | |
632 | sizeof(KEY_CACHE_SET), KEY_CACHE_SET, | |
633 | sizeof(struct cl_client_cache), lov->lov_cache, | |
634 | NULL); | |
635 | if (rc < 0) | |
636 | GOTO(out, rc); | |
637 | } | |
638 | ||
639 | rc = lov_notify(obd, tgt->ltd_exp->exp_obd, | |
640 | active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE, | |
641 | (void *)&index); | |
642 | ||
643 | out: | |
644 | if (rc) { | |
645 | CERROR("add failed (%d), deleting %s\n", rc, | |
646 | obd_uuid2str(&tgt->ltd_uuid)); | |
647 | lov_del_target(obd, index, 0, 0); | |
648 | } | |
649 | obd_putref(obd); | |
0a3bdb00 | 650 | return rc; |
d7e09d03 PT |
651 | } |
652 | ||
653 | /* Schedule a target for deletion */ | |
654 | int lov_del_target(struct obd_device *obd, __u32 index, | |
655 | struct obd_uuid *uuidp, int gen) | |
656 | { | |
657 | struct lov_obd *lov = &obd->u.lov; | |
658 | int count = lov->desc.ld_tgt_count; | |
659 | int rc = 0; | |
d7e09d03 PT |
660 | |
661 | if (index >= count) { | |
662 | CERROR("LOV target index %d >= number of LOV OBDs %d.\n", | |
663 | index, count); | |
0a3bdb00 | 664 | return -EINVAL; |
d7e09d03 PT |
665 | } |
666 | ||
667 | /* to make sure there's no ongoing lov_notify() now */ | |
668 | down_write(&lov->lov_notify_lock); | |
669 | obd_getref(obd); | |
670 | ||
671 | if (!lov->lov_tgts[index]) { | |
672 | CERROR("LOV target at index %d is not setup.\n", index); | |
673 | GOTO(out, rc = -EINVAL); | |
674 | } | |
675 | ||
676 | if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) { | |
677 | CERROR("LOV target UUID %s at index %d doesn't match %s.\n", | |
678 | lov_uuid2str(lov, index), index, | |
679 | obd_uuid2str(uuidp)); | |
680 | GOTO(out, rc = -EINVAL); | |
681 | } | |
682 | ||
683 | CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n", | |
684 | lov_uuid2str(lov, index), index, | |
685 | lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp, | |
686 | lov->lov_tgts[index]->ltd_active); | |
687 | ||
688 | lov->lov_tgts[index]->ltd_reap = 1; | |
689 | lov->lov_death_row++; | |
690 | /* we really delete it from obd_putref */ | |
691 | out: | |
692 | obd_putref(obd); | |
693 | up_write(&lov->lov_notify_lock); | |
694 | ||
0a3bdb00 | 695 | return rc; |
d7e09d03 PT |
696 | } |
697 | ||
698 | static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) | |
699 | { | |
700 | struct obd_device *osc_obd; | |
701 | ||
702 | LASSERT(tgt); | |
703 | LASSERT(tgt->ltd_reap); | |
704 | ||
705 | osc_obd = class_exp2obd(tgt->ltd_exp); | |
706 | ||
707 | CDEBUG(D_CONFIG, "Removing tgt %s : %s\n", | |
708 | tgt->ltd_uuid.uuid, | |
709 | osc_obd ? osc_obd->obd_name : "<no obd>"); | |
710 | ||
711 | if (tgt->ltd_exp) | |
712 | lov_disconnect_obd(obd, tgt); | |
713 | ||
714 | OBD_FREE_PTR(tgt); | |
715 | ||
716 | /* Manual cleanup - no cleanup logs to clean up the osc's. We must | |
717 | do it ourselves. And we can't do it from lov_cleanup, | |
718 | because we just lost our only reference to it. */ | |
719 | if (osc_obd) | |
720 | class_manual_cleanup(osc_obd); | |
721 | } | |
722 | ||
723 | void lov_fix_desc_stripe_size(__u64 *val) | |
724 | { | |
50dc198a AD |
725 | if (*val < LOV_MIN_STRIPE_SIZE) { |
726 | if (*val != 0) | |
727 | LCONSOLE_INFO("Increasing default stripe size to " | |
728 | "minimum %u\n", | |
729 | LOV_DEFAULT_STRIPE_SIZE); | |
d7e09d03 PT |
730 | *val = LOV_DEFAULT_STRIPE_SIZE; |
731 | } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) { | |
732 | *val &= ~(LOV_MIN_STRIPE_SIZE - 1); | |
733 | LCONSOLE_WARN("Changing default stripe size to "LPU64" (a " | |
734 | "multiple of %u)\n", | |
735 | *val, LOV_MIN_STRIPE_SIZE); | |
736 | } | |
737 | } | |
738 | ||
739 | void lov_fix_desc_stripe_count(__u32 *val) | |
740 | { | |
741 | if (*val == 0) | |
742 | *val = 1; | |
743 | } | |
744 | ||
745 | void lov_fix_desc_pattern(__u32 *val) | |
746 | { | |
747 | /* from lov_setstripe */ | |
748 | if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) { | |
749 | LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val); | |
750 | *val = 0; | |
751 | } | |
752 | } | |
753 | ||
754 | void lov_fix_desc_qos_maxage(__u32 *val) | |
755 | { | |
756 | /* fix qos_maxage */ | |
757 | if (*val == 0) | |
758 | *val = QOS_DEFAULT_MAXAGE; | |
759 | } | |
760 | ||
761 | void lov_fix_desc(struct lov_desc *desc) | |
762 | { | |
763 | lov_fix_desc_stripe_size(&desc->ld_default_stripe_size); | |
764 | lov_fix_desc_stripe_count(&desc->ld_default_stripe_count); | |
765 | lov_fix_desc_pattern(&desc->ld_pattern); | |
766 | lov_fix_desc_qos_maxage(&desc->ld_qos_maxage); | |
767 | } | |
768 | ||
769 | int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg) | |
770 | { | |
771 | struct lprocfs_static_vars lvars = { 0 }; | |
772 | struct lov_desc *desc; | |
773 | struct lov_obd *lov = &obd->u.lov; | |
774 | int rc; | |
d7e09d03 PT |
775 | |
776 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { | |
777 | CERROR("LOV setup requires a descriptor\n"); | |
0a3bdb00 | 778 | return -EINVAL; |
d7e09d03 PT |
779 | } |
780 | ||
781 | desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1); | |
782 | ||
783 | if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { | |
784 | CERROR("descriptor size wrong: %d > %d\n", | |
785 | (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); | |
0a3bdb00 | 786 | return -EINVAL; |
d7e09d03 PT |
787 | } |
788 | ||
789 | if (desc->ld_magic != LOV_DESC_MAGIC) { | |
790 | if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) { | |
791 | CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n", | |
792 | obd->obd_name, desc); | |
793 | lustre_swab_lov_desc(desc); | |
794 | } else { | |
795 | CERROR("%s: Bad lov desc magic: %#x\n", | |
796 | obd->obd_name, desc->ld_magic); | |
0a3bdb00 | 797 | return -EINVAL; |
d7e09d03 PT |
798 | } |
799 | } | |
800 | ||
801 | lov_fix_desc(desc); | |
802 | ||
803 | desc->ld_active_tgt_count = 0; | |
804 | lov->desc = *desc; | |
805 | lov->lov_tgt_size = 0; | |
806 | ||
807 | mutex_init(&lov->lov_lock); | |
808 | atomic_set(&lov->lov_refcount, 0); | |
809 | lov->lov_sp_me = LUSTRE_SP_CLI; | |
810 | ||
811 | init_rwsem(&lov->lov_notify_lock); | |
812 | ||
813 | lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS, | |
814 | HASH_POOLS_MAX_BITS, | |
815 | HASH_POOLS_BKT_BITS, 0, | |
816 | CFS_HASH_MIN_THETA, | |
817 | CFS_HASH_MAX_THETA, | |
818 | &pool_hash_operations, | |
819 | CFS_HASH_DEFAULT); | |
820 | INIT_LIST_HEAD(&lov->lov_pool_list); | |
821 | lov->lov_pool_count = 0; | |
822 | rc = lov_ost_pool_init(&lov->lov_packed, 0); | |
823 | if (rc) | |
824 | GOTO(out, rc); | |
825 | ||
826 | lprocfs_lov_init_vars(&lvars); | |
827 | lprocfs_obd_setup(obd, lvars.obd_vars); | |
828 | #ifdef LPROCFS | |
829 | { | |
5907838a | 830 | int rc1; |
d7e09d03 | 831 | |
5907838a | 832 | rc1 = lprocfs_seq_create(obd->obd_proc_entry, "target_obd", |
d7e09d03 | 833 | 0444, &lov_proc_target_fops, obd); |
5907838a | 834 | if (rc1) |
d7e09d03 PT |
835 | CWARN("Error adding the target_obd file\n"); |
836 | } | |
837 | #endif | |
838 | lov->lov_pool_proc_entry = lprocfs_register("pools", | |
839 | obd->obd_proc_entry, | |
840 | NULL, NULL); | |
841 | ||
0a3bdb00 | 842 | return 0; |
d7e09d03 PT |
843 | |
844 | out: | |
845 | return rc; | |
846 | } | |
847 | ||
848 | static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) | |
849 | { | |
850 | int rc = 0; | |
851 | struct lov_obd *lov = &obd->u.lov; | |
852 | ||
d7e09d03 PT |
853 | switch (stage) { |
854 | case OBD_CLEANUP_EARLY: { | |
855 | int i; | |
856 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
857 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) | |
858 | continue; | |
859 | obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp), | |
860 | OBD_CLEANUP_EARLY); | |
861 | } | |
862 | break; | |
863 | } | |
864 | case OBD_CLEANUP_EXPORTS: | |
865 | rc = obd_llog_finish(obd, 0); | |
866 | if (rc != 0) | |
867 | CERROR("failed to cleanup llogging subsystems\n"); | |
868 | break; | |
869 | } | |
0a3bdb00 | 870 | return rc; |
d7e09d03 PT |
871 | } |
872 | ||
873 | static int lov_cleanup(struct obd_device *obd) | |
874 | { | |
875 | struct lov_obd *lov = &obd->u.lov; | |
876 | struct list_head *pos, *tmp; | |
877 | struct pool_desc *pool; | |
d7e09d03 PT |
878 | |
879 | list_for_each_safe(pos, tmp, &lov->lov_pool_list) { | |
880 | pool = list_entry(pos, struct pool_desc, pool_list); | |
881 | /* free pool structs */ | |
882 | CDEBUG(D_INFO, "delete pool %p\n", pool); | |
883 | /* In the function below, .hs_keycmp resolves to | |
884 | * pool_hashkey_keycmp() */ | |
885 | /* coverity[overrun-buffer-val] */ | |
886 | lov_pool_del(obd, pool->pool_name); | |
887 | } | |
888 | cfs_hash_putref(lov->lov_pools_hash_body); | |
889 | lov_ost_pool_free(&lov->lov_packed); | |
890 | ||
891 | lprocfs_obd_cleanup(obd); | |
892 | if (lov->lov_tgts) { | |
893 | int i; | |
894 | obd_getref(obd); | |
895 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
896 | if (!lov->lov_tgts[i]) | |
897 | continue; | |
898 | ||
899 | /* Inactive targets may never have connected */ | |
900 | if (lov->lov_tgts[i]->ltd_active || | |
901 | atomic_read(&lov->lov_refcount)) | |
902 | /* We should never get here - these | |
903 | should have been removed in the | |
904 | disconnect. */ | |
905 | CERROR("lov tgt %d not cleaned!" | |
906 | " deathrow=%d, lovrc=%d\n", | |
907 | i, lov->lov_death_row, | |
908 | atomic_read(&lov->lov_refcount)); | |
909 | lov_del_target(obd, i, 0, 0); | |
910 | } | |
911 | obd_putref(obd); | |
912 | OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) * | |
913 | lov->lov_tgt_size); | |
914 | lov->lov_tgt_size = 0; | |
915 | } | |
0a3bdb00 | 916 | return 0; |
d7e09d03 PT |
917 | } |
918 | ||
919 | int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg, | |
920 | __u32 *indexp, int *genp) | |
921 | { | |
922 | struct obd_uuid obd_uuid; | |
923 | int cmd; | |
924 | int rc = 0; | |
d7e09d03 PT |
925 | |
926 | switch(cmd = lcfg->lcfg_command) { | |
927 | case LCFG_LOV_ADD_OBD: | |
928 | case LCFG_LOV_ADD_INA: | |
929 | case LCFG_LOV_DEL_OBD: { | |
930 | __u32 index; | |
931 | int gen; | |
932 | /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */ | |
933 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) | |
934 | GOTO(out, rc = -EINVAL); | |
935 | ||
936 | obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); | |
937 | ||
938 | if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", indexp) != 1) | |
939 | GOTO(out, rc = -EINVAL); | |
940 | if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", genp) != 1) | |
941 | GOTO(out, rc = -EINVAL); | |
942 | index = *indexp; | |
943 | gen = *genp; | |
944 | if (cmd == LCFG_LOV_ADD_OBD) | |
945 | rc = lov_add_target(obd, &obd_uuid, index, gen, 1); | |
946 | else if (cmd == LCFG_LOV_ADD_INA) | |
947 | rc = lov_add_target(obd, &obd_uuid, index, gen, 0); | |
948 | else | |
949 | rc = lov_del_target(obd, index, &obd_uuid, gen); | |
950 | GOTO(out, rc); | |
951 | } | |
952 | case LCFG_PARAM: { | |
953 | struct lprocfs_static_vars lvars = { 0 }; | |
954 | struct lov_desc *desc = &(obd->u.lov.desc); | |
955 | ||
956 | if (!desc) | |
957 | GOTO(out, rc = -EINVAL); | |
958 | ||
959 | lprocfs_lov_init_vars(&lvars); | |
960 | ||
961 | rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars, | |
962 | lcfg, obd); | |
963 | if (rc > 0) | |
964 | rc = 0; | |
965 | GOTO(out, rc); | |
966 | } | |
967 | case LCFG_POOL_NEW: | |
968 | case LCFG_POOL_ADD: | |
969 | case LCFG_POOL_DEL: | |
970 | case LCFG_POOL_REM: | |
971 | GOTO(out, rc); | |
972 | ||
973 | default: { | |
974 | CERROR("Unknown command: %d\n", lcfg->lcfg_command); | |
975 | GOTO(out, rc = -EINVAL); | |
976 | ||
977 | } | |
978 | } | |
979 | out: | |
0a3bdb00 | 980 | return rc; |
d7e09d03 PT |
981 | } |
982 | ||
983 | static int lov_recreate(struct obd_export *exp, struct obdo *src_oa, | |
984 | struct lov_stripe_md **ea, struct obd_trans_info *oti) | |
985 | { | |
986 | struct lov_stripe_md *obj_mdp, *lsm; | |
987 | struct lov_obd *lov = &exp->exp_obd->u.lov; | |
988 | unsigned ost_idx; | |
989 | int rc, i; | |
d7e09d03 PT |
990 | |
991 | LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS && | |
992 | src_oa->o_flags & OBD_FL_RECREATE_OBJS); | |
993 | ||
994 | OBD_ALLOC(obj_mdp, sizeof(*obj_mdp)); | |
995 | if (obj_mdp == NULL) | |
0a3bdb00 | 996 | return -ENOMEM; |
d7e09d03 PT |
997 | |
998 | ost_idx = src_oa->o_nlink; | |
999 | lsm = *ea; | |
1000 | if (lsm == NULL) | |
1001 | GOTO(out, rc = -EINVAL); | |
1002 | if (ost_idx >= lov->desc.ld_tgt_count || | |
1003 | !lov->lov_tgts[ost_idx]) | |
1004 | GOTO(out, rc = -EINVAL); | |
1005 | ||
1006 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
1007 | if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) { | |
1008 | if (ostid_id(&lsm->lsm_oinfo[i]->loi_oi) != | |
1009 | ostid_id(&src_oa->o_oi)) | |
1010 | GOTO(out, rc = -EINVAL); | |
1011 | break; | |
1012 | } | |
1013 | } | |
1014 | if (i == lsm->lsm_stripe_count) | |
1015 | GOTO(out, rc = -EINVAL); | |
1016 | ||
1017 | rc = obd_create(NULL, lov->lov_tgts[ost_idx]->ltd_exp, | |
1018 | src_oa, &obj_mdp, oti); | |
1019 | out: | |
1020 | OBD_FREE(obj_mdp, sizeof(*obj_mdp)); | |
0a3bdb00 | 1021 | return rc; |
d7e09d03 PT |
1022 | } |
1023 | ||
1024 | /* the LOV expects oa->o_id to be set to the LOV object id */ | |
1025 | static int lov_create(const struct lu_env *env, struct obd_export *exp, | |
1026 | struct obdo *src_oa, struct lov_stripe_md **ea, | |
1027 | struct obd_trans_info *oti) | |
1028 | { | |
1029 | struct lov_obd *lov; | |
1030 | int rc = 0; | |
d7e09d03 PT |
1031 | |
1032 | LASSERT(ea != NULL); | |
1033 | if (exp == NULL) | |
0a3bdb00 | 1034 | return -EINVAL; |
d7e09d03 PT |
1035 | |
1036 | if ((src_oa->o_valid & OBD_MD_FLFLAGS) && | |
1037 | src_oa->o_flags == OBD_FL_DELORPHAN) { | |
1038 | /* should be used with LOV anymore */ | |
1039 | LBUG(); | |
1040 | } | |
1041 | ||
1042 | lov = &exp->exp_obd->u.lov; | |
1043 | if (!lov->desc.ld_active_tgt_count) | |
0a3bdb00 | 1044 | return -EIO; |
d7e09d03 PT |
1045 | |
1046 | obd_getref(exp->exp_obd); | |
1047 | /* Recreate a specific object id at the given OST index */ | |
1048 | if ((src_oa->o_valid & OBD_MD_FLFLAGS) && | |
1049 | (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) { | |
1050 | rc = lov_recreate(exp, src_oa, ea, oti); | |
1051 | } | |
1052 | ||
1053 | obd_putref(exp->exp_obd); | |
0a3bdb00 | 1054 | return rc; |
d7e09d03 PT |
1055 | } |
1056 | ||
1057 | #define ASSERT_LSM_MAGIC(lsmp) \ | |
1058 | do { \ | |
1059 | LASSERT((lsmp) != NULL); \ | |
1060 | LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC_V1 || \ | |
1061 | (lsmp)->lsm_magic == LOV_MAGIC_V3), \ | |
1062 | "%p->lsm_magic=%x\n", (lsmp), (lsmp)->lsm_magic); \ | |
1063 | } while (0) | |
1064 | ||
1065 | static int lov_destroy(const struct lu_env *env, struct obd_export *exp, | |
1066 | struct obdo *oa, struct lov_stripe_md *lsm, | |
1067 | struct obd_trans_info *oti, struct obd_export *md_exp, | |
1068 | void *capa) | |
1069 | { | |
1070 | struct lov_request_set *set; | |
1071 | struct obd_info oinfo; | |
1072 | struct lov_request *req; | |
1073 | struct list_head *pos; | |
1074 | struct lov_obd *lov; | |
1075 | int rc = 0, err = 0; | |
d7e09d03 PT |
1076 | |
1077 | ASSERT_LSM_MAGIC(lsm); | |
1078 | ||
1079 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1080 | return -ENODEV; |
d7e09d03 PT |
1081 | |
1082 | if (oa->o_valid & OBD_MD_FLCOOKIE) { | |
1083 | LASSERT(oti); | |
1084 | LASSERT(oti->oti_logcookies); | |
1085 | } | |
1086 | ||
1087 | lov = &exp->exp_obd->u.lov; | |
1088 | obd_getref(exp->exp_obd); | |
1089 | rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set); | |
1090 | if (rc) | |
1091 | GOTO(out, rc); | |
1092 | ||
1093 | list_for_each (pos, &set->set_list) { | |
1094 | req = list_entry(pos, struct lov_request, rq_link); | |
1095 | ||
1096 | if (oa->o_valid & OBD_MD_FLCOOKIE) | |
1097 | oti->oti_logcookies = set->set_cookies + req->rq_stripe; | |
1098 | ||
1099 | err = obd_destroy(env, lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1100 | req->rq_oi.oi_oa, NULL, oti, NULL, capa); | |
1101 | err = lov_update_common_set(set, req, err); | |
1102 | if (err) { | |
1103 | CERROR("%s: destroying objid "DOSTID" subobj " | |
1104 | DOSTID" on OST idx %d: rc = %d\n", | |
1105 | exp->exp_obd->obd_name, POSTID(&oa->o_oi), | |
1106 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1107 | req->rq_idx, err); | |
1108 | if (!rc) | |
1109 | rc = err; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | if (rc == 0) { | |
1114 | LASSERT(lsm_op_find(lsm->lsm_magic) != NULL); | |
1115 | rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp); | |
1116 | } | |
1117 | err = lov_fini_destroy_set(set); | |
1118 | out: | |
1119 | obd_putref(exp->exp_obd); | |
0a3bdb00 | 1120 | return rc ? rc : err; |
d7e09d03 PT |
1121 | } |
1122 | ||
1123 | static int lov_getattr(const struct lu_env *env, struct obd_export *exp, | |
1124 | struct obd_info *oinfo) | |
1125 | { | |
1126 | struct lov_request_set *set; | |
1127 | struct lov_request *req; | |
1128 | struct list_head *pos; | |
1129 | struct lov_obd *lov; | |
1130 | int err = 0, rc = 0; | |
d7e09d03 PT |
1131 | |
1132 | LASSERT(oinfo); | |
1133 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1134 | ||
1135 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1136 | return -ENODEV; |
d7e09d03 PT |
1137 | |
1138 | lov = &exp->exp_obd->u.lov; | |
1139 | ||
1140 | rc = lov_prep_getattr_set(exp, oinfo, &set); | |
1141 | if (rc) | |
0a3bdb00 | 1142 | return rc; |
d7e09d03 PT |
1143 | |
1144 | list_for_each (pos, &set->set_list) { | |
1145 | req = list_entry(pos, struct lov_request, rq_link); | |
1146 | ||
1147 | CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx" | |
1148 | " %u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, | |
1149 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); | |
1150 | ||
1151 | rc = obd_getattr(env, lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1152 | &req->rq_oi); | |
1153 | err = lov_update_common_set(set, req, rc); | |
1154 | if (err) { | |
1155 | CERROR("%s: getattr objid "DOSTID" subobj " | |
1156 | DOSTID" on OST idx %d: rc = %d\n", | |
1157 | exp->exp_obd->obd_name, | |
1158 | POSTID(&oinfo->oi_oa->o_oi), | |
1159 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1160 | req->rq_idx, err); | |
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | rc = lov_fini_getattr_set(set); | |
1166 | if (err) | |
1167 | rc = err; | |
0a3bdb00 | 1168 | return rc; |
d7e09d03 PT |
1169 | } |
1170 | ||
1171 | static int lov_getattr_interpret(struct ptlrpc_request_set *rqset, | |
1172 | void *data, int rc) | |
1173 | { | |
1174 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1175 | int err; | |
d7e09d03 PT |
1176 | |
1177 | /* don't do attribute merge if this aysnc op failed */ | |
1178 | if (rc) | |
1179 | atomic_set(&lovset->set_completes, 0); | |
1180 | err = lov_fini_getattr_set(lovset); | |
0a3bdb00 | 1181 | return rc ? rc : err; |
d7e09d03 PT |
1182 | } |
1183 | ||
1184 | static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
1185 | struct ptlrpc_request_set *rqset) | |
1186 | { | |
1187 | struct lov_request_set *lovset; | |
1188 | struct lov_obd *lov; | |
1189 | struct list_head *pos; | |
1190 | struct lov_request *req; | |
1191 | int rc = 0, err; | |
d7e09d03 PT |
1192 | |
1193 | LASSERT(oinfo); | |
1194 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1195 | ||
1196 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1197 | return -ENODEV; |
d7e09d03 PT |
1198 | |
1199 | lov = &exp->exp_obd->u.lov; | |
1200 | ||
1201 | rc = lov_prep_getattr_set(exp, oinfo, &lovset); | |
1202 | if (rc) | |
0a3bdb00 | 1203 | return rc; |
d7e09d03 PT |
1204 | |
1205 | CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n", | |
1206 | POSTID(&oinfo->oi_md->lsm_oi), oinfo->oi_md->lsm_stripe_count, | |
1207 | oinfo->oi_md->lsm_stripe_size); | |
1208 | ||
1209 | list_for_each(pos, &lovset->set_list) { | |
1210 | req = list_entry(pos, struct lov_request, rq_link); | |
1211 | ||
1212 | CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx" | |
1213 | "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, | |
1214 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); | |
1215 | rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1216 | &req->rq_oi, rqset); | |
1217 | if (rc) { | |
1218 | CERROR("%s: getattr objid "DOSTID" subobj" | |
1219 | DOSTID" on OST idx %d: rc = %d\n", | |
1220 | exp->exp_obd->obd_name, | |
1221 | POSTID(&oinfo->oi_oa->o_oi), | |
1222 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1223 | req->rq_idx, rc); | |
1224 | GOTO(out, rc); | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | if (!list_empty(&rqset->set_requests)) { | |
1229 | LASSERT(rc == 0); | |
1230 | LASSERT (rqset->set_interpret == NULL); | |
1231 | rqset->set_interpret = lov_getattr_interpret; | |
1232 | rqset->set_arg = (void *)lovset; | |
0a3bdb00 | 1233 | return rc; |
d7e09d03 PT |
1234 | } |
1235 | out: | |
1236 | if (rc) | |
1237 | atomic_set(&lovset->set_completes, 0); | |
1238 | err = lov_fini_getattr_set(lovset); | |
0a3bdb00 | 1239 | return rc ? rc : err; |
d7e09d03 PT |
1240 | } |
1241 | ||
1242 | static int lov_setattr(const struct lu_env *env, struct obd_export *exp, | |
1243 | struct obd_info *oinfo, struct obd_trans_info *oti) | |
1244 | { | |
1245 | struct lov_request_set *set; | |
1246 | struct lov_obd *lov; | |
1247 | struct list_head *pos; | |
1248 | struct lov_request *req; | |
1249 | int err = 0, rc = 0; | |
d7e09d03 PT |
1250 | |
1251 | LASSERT(oinfo); | |
1252 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1253 | ||
1254 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1255 | return -ENODEV; |
d7e09d03 PT |
1256 | |
1257 | /* for now, we only expect the following updates here */ | |
1258 | LASSERT(!(oinfo->oi_oa->o_valid & ~(OBD_MD_FLID | OBD_MD_FLTYPE | | |
1259 | OBD_MD_FLMODE | OBD_MD_FLATIME | | |
1260 | OBD_MD_FLMTIME | OBD_MD_FLCTIME | | |
1261 | OBD_MD_FLFLAGS | OBD_MD_FLSIZE | | |
1262 | OBD_MD_FLGROUP | OBD_MD_FLUID | | |
1263 | OBD_MD_FLGID | OBD_MD_FLFID | | |
1264 | OBD_MD_FLGENER))); | |
1265 | lov = &exp->exp_obd->u.lov; | |
1266 | rc = lov_prep_setattr_set(exp, oinfo, oti, &set); | |
1267 | if (rc) | |
0a3bdb00 | 1268 | return rc; |
d7e09d03 PT |
1269 | |
1270 | list_for_each (pos, &set->set_list) { | |
1271 | req = list_entry(pos, struct lov_request, rq_link); | |
1272 | ||
1273 | rc = obd_setattr(env, lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1274 | &req->rq_oi, NULL); | |
1275 | err = lov_update_setattr_set(set, req, rc); | |
1276 | if (err) { | |
1277 | CERROR("%s: setattr objid "DOSTID" subobj " | |
1278 | DOSTID" on OST idx %d: rc = %d\n", | |
1279 | exp->exp_obd->obd_name, | |
1280 | POSTID(&set->set_oi->oi_oa->o_oi), | |
1281 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, | |
1282 | err); | |
1283 | if (!rc) | |
1284 | rc = err; | |
1285 | } | |
1286 | } | |
1287 | err = lov_fini_setattr_set(set); | |
1288 | if (!rc) | |
1289 | rc = err; | |
0a3bdb00 | 1290 | return rc; |
d7e09d03 PT |
1291 | } |
1292 | ||
1293 | static int lov_setattr_interpret(struct ptlrpc_request_set *rqset, | |
1294 | void *data, int rc) | |
1295 | { | |
1296 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1297 | int err; | |
d7e09d03 PT |
1298 | |
1299 | if (rc) | |
1300 | atomic_set(&lovset->set_completes, 0); | |
1301 | err = lov_fini_setattr_set(lovset); | |
0a3bdb00 | 1302 | return rc ? rc : err; |
d7e09d03 PT |
1303 | } |
1304 | ||
1305 | /* If @oti is given, the request goes from MDS and responses from OSTs are not | |
1306 | needed. Otherwise, a client is waiting for responses. */ | |
1307 | static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
1308 | struct obd_trans_info *oti, | |
1309 | struct ptlrpc_request_set *rqset) | |
1310 | { | |
1311 | struct lov_request_set *set; | |
1312 | struct lov_request *req; | |
1313 | struct list_head *pos; | |
1314 | struct lov_obd *lov; | |
1315 | int rc = 0; | |
d7e09d03 PT |
1316 | |
1317 | LASSERT(oinfo); | |
1318 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1319 | if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) { | |
1320 | LASSERT(oti); | |
1321 | LASSERT(oti->oti_logcookies); | |
1322 | } | |
1323 | ||
1324 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1325 | return -ENODEV; |
d7e09d03 PT |
1326 | |
1327 | lov = &exp->exp_obd->u.lov; | |
1328 | rc = lov_prep_setattr_set(exp, oinfo, oti, &set); | |
1329 | if (rc) | |
0a3bdb00 | 1330 | return rc; |
d7e09d03 PT |
1331 | |
1332 | CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n", | |
1333 | POSTID(&oinfo->oi_md->lsm_oi), | |
1334 | oinfo->oi_md->lsm_stripe_count, | |
1335 | oinfo->oi_md->lsm_stripe_size); | |
1336 | ||
1337 | list_for_each(pos, &set->set_list) { | |
1338 | req = list_entry(pos, struct lov_request, rq_link); | |
1339 | ||
1340 | if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) | |
1341 | oti->oti_logcookies = set->set_cookies + req->rq_stripe; | |
1342 | ||
1343 | CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx" | |
1344 | "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, | |
1345 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); | |
1346 | ||
1347 | rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1348 | &req->rq_oi, oti, rqset); | |
1349 | if (rc) { | |
1350 | CERROR("error: setattr objid "DOSTID" subobj" | |
1351 | DOSTID" on OST idx %d: rc = %d\n", | |
1352 | POSTID(&set->set_oi->oi_oa->o_oi), | |
1353 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1354 | req->rq_idx, rc); | |
1355 | break; | |
1356 | } | |
1357 | } | |
1358 | ||
1359 | /* If we are not waiting for responses on async requests, return. */ | |
1360 | if (rc || !rqset || list_empty(&rqset->set_requests)) { | |
1361 | int err; | |
1362 | if (rc) | |
1363 | atomic_set(&set->set_completes, 0); | |
1364 | err = lov_fini_setattr_set(set); | |
0a3bdb00 | 1365 | return rc ? rc : err; |
d7e09d03 PT |
1366 | } |
1367 | ||
1368 | LASSERT(rqset->set_interpret == NULL); | |
1369 | rqset->set_interpret = lov_setattr_interpret; | |
1370 | rqset->set_arg = (void *)set; | |
1371 | ||
0a3bdb00 | 1372 | return 0; |
d7e09d03 PT |
1373 | } |
1374 | ||
1375 | static int lov_punch_interpret(struct ptlrpc_request_set *rqset, | |
1376 | void *data, int rc) | |
1377 | { | |
1378 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1379 | int err; | |
d7e09d03 PT |
1380 | |
1381 | if (rc) | |
1382 | atomic_set(&lovset->set_completes, 0); | |
1383 | err = lov_fini_punch_set(lovset); | |
0a3bdb00 | 1384 | return rc ? rc : err; |
d7e09d03 PT |
1385 | } |
1386 | ||
1387 | /* FIXME: maybe we'll just make one node the authoritative attribute node, then | |
1388 | * we can send this 'punch' to just the authoritative node and the nodes | |
1389 | * that the punch will affect. */ | |
1390 | static int lov_punch(const struct lu_env *env, struct obd_export *exp, | |
1391 | struct obd_info *oinfo, struct obd_trans_info *oti, | |
1392 | struct ptlrpc_request_set *rqset) | |
1393 | { | |
1394 | struct lov_request_set *set; | |
1395 | struct lov_obd *lov; | |
1396 | struct list_head *pos; | |
1397 | struct lov_request *req; | |
1398 | int rc = 0; | |
d7e09d03 PT |
1399 | |
1400 | LASSERT(oinfo); | |
1401 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1402 | ||
1403 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1404 | return -ENODEV; |
d7e09d03 PT |
1405 | |
1406 | lov = &exp->exp_obd->u.lov; | |
1407 | rc = lov_prep_punch_set(exp, oinfo, oti, &set); | |
1408 | if (rc) | |
0a3bdb00 | 1409 | return rc; |
d7e09d03 PT |
1410 | |
1411 | list_for_each (pos, &set->set_list) { | |
1412 | req = list_entry(pos, struct lov_request, rq_link); | |
1413 | ||
1414 | rc = obd_punch(env, lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1415 | &req->rq_oi, NULL, rqset); | |
1416 | if (rc) { | |
1417 | CERROR("%s: punch objid "DOSTID" subobj "DOSTID | |
1418 | " on OST idx %d: rc = %d\n", | |
1419 | exp->exp_obd->obd_name, | |
1420 | POSTID(&set->set_oi->oi_oa->o_oi), | |
1421 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, rc); | |
1422 | break; | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | if (rc || list_empty(&rqset->set_requests)) { | |
1427 | int err; | |
1428 | err = lov_fini_punch_set(set); | |
0a3bdb00 | 1429 | return rc ? rc : err; |
d7e09d03 PT |
1430 | } |
1431 | ||
1432 | LASSERT(rqset->set_interpret == NULL); | |
1433 | rqset->set_interpret = lov_punch_interpret; | |
1434 | rqset->set_arg = (void *)set; | |
1435 | ||
0a3bdb00 | 1436 | return 0; |
d7e09d03 PT |
1437 | } |
1438 | ||
1439 | static int lov_sync_interpret(struct ptlrpc_request_set *rqset, | |
1440 | void *data, int rc) | |
1441 | { | |
1442 | struct lov_request_set *lovset = data; | |
1443 | int err; | |
d7e09d03 PT |
1444 | |
1445 | if (rc) | |
1446 | atomic_set(&lovset->set_completes, 0); | |
1447 | err = lov_fini_sync_set(lovset); | |
0a3bdb00 | 1448 | return rc ?: err; |
d7e09d03 PT |
1449 | } |
1450 | ||
1451 | static int lov_sync(const struct lu_env *env, struct obd_export *exp, | |
1452 | struct obd_info *oinfo, obd_off start, obd_off end, | |
1453 | struct ptlrpc_request_set *rqset) | |
1454 | { | |
1455 | struct lov_request_set *set = NULL; | |
1456 | struct lov_obd *lov; | |
1457 | struct list_head *pos; | |
1458 | struct lov_request *req; | |
1459 | int rc = 0; | |
d7e09d03 PT |
1460 | |
1461 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1462 | LASSERT(rqset != NULL); | |
1463 | ||
1464 | if (!exp->exp_obd) | |
0a3bdb00 | 1465 | return -ENODEV; |
d7e09d03 PT |
1466 | |
1467 | lov = &exp->exp_obd->u.lov; | |
1468 | rc = lov_prep_sync_set(exp, oinfo, start, end, &set); | |
1469 | if (rc) | |
0a3bdb00 | 1470 | return rc; |
d7e09d03 PT |
1471 | |
1472 | CDEBUG(D_INFO, "fsync objid "DOSTID" ["LPX64", "LPX64"]\n", | |
1473 | POSTID(&set->set_oi->oi_oa->o_oi), start, end); | |
1474 | ||
1475 | list_for_each (pos, &set->set_list) { | |
1476 | req = list_entry(pos, struct lov_request, rq_link); | |
1477 | ||
1478 | rc = obd_sync(env, lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1479 | &req->rq_oi, req->rq_oi.oi_policy.l_extent.start, | |
1480 | req->rq_oi.oi_policy.l_extent.end, rqset); | |
1481 | if (rc) { | |
1482 | CERROR("%s: fsync objid "DOSTID" subobj "DOSTID | |
1483 | " on OST idx %d: rc = %d\n", | |
1484 | exp->exp_obd->obd_name, | |
1485 | POSTID(&set->set_oi->oi_oa->o_oi), | |
1486 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, | |
1487 | rc); | |
1488 | break; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | /* If we are not waiting for responses on async requests, return. */ | |
1493 | if (rc || list_empty(&rqset->set_requests)) { | |
1494 | int err = lov_fini_sync_set(set); | |
1495 | ||
0a3bdb00 | 1496 | return rc ?: err; |
d7e09d03 PT |
1497 | } |
1498 | ||
1499 | LASSERT(rqset->set_interpret == NULL); | |
1500 | rqset->set_interpret = lov_sync_interpret; | |
1501 | rqset->set_arg = (void *)set; | |
1502 | ||
0a3bdb00 | 1503 | return 0; |
d7e09d03 PT |
1504 | } |
1505 | ||
1506 | static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo, | |
1507 | obd_count oa_bufs, struct brw_page *pga) | |
1508 | { | |
1509 | struct obd_info oinfo = { { { 0 } } }; | |
1510 | int i, rc = 0; | |
1511 | ||
1512 | oinfo.oi_oa = lov_oinfo->oi_oa; | |
1513 | ||
1514 | /* The caller just wants to know if there's a chance that this | |
1515 | * I/O can succeed */ | |
1516 | for (i = 0; i < oa_bufs; i++) { | |
1517 | int stripe = lov_stripe_number(lov_oinfo->oi_md, pga[i].off); | |
1518 | int ost = lov_oinfo->oi_md->lsm_oinfo[stripe]->loi_ost_idx; | |
1519 | obd_off start, end; | |
1520 | ||
1521 | if (!lov_stripe_intersects(lov_oinfo->oi_md, i, pga[i].off, | |
1522 | pga[i].off + pga[i].count - 1, | |
1523 | &start, &end)) | |
1524 | continue; | |
1525 | ||
1526 | if (!lov->lov_tgts[ost] || !lov->lov_tgts[ost]->ltd_active) { | |
1527 | CDEBUG(D_HA, "lov idx %d inactive\n", ost); | |
1528 | return -EIO; | |
1529 | } | |
1530 | ||
1531 | rc = obd_brw(OBD_BRW_CHECK, lov->lov_tgts[ost]->ltd_exp, &oinfo, | |
1532 | 1, &pga[i], NULL); | |
1533 | if (rc) | |
1534 | break; | |
1535 | } | |
1536 | return rc; | |
1537 | } | |
1538 | ||
1539 | static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo, | |
1540 | obd_count oa_bufs, struct brw_page *pga, | |
1541 | struct obd_trans_info *oti) | |
1542 | { | |
1543 | struct lov_request_set *set; | |
1544 | struct lov_request *req; | |
1545 | struct list_head *pos; | |
1546 | struct lov_obd *lov = &exp->exp_obd->u.lov; | |
1547 | int err, rc = 0; | |
d7e09d03 PT |
1548 | |
1549 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1550 | ||
1551 | if (cmd == OBD_BRW_CHECK) { | |
1552 | rc = lov_brw_check(lov, oinfo, oa_bufs, pga); | |
0a3bdb00 | 1553 | return rc; |
d7e09d03 PT |
1554 | } |
1555 | ||
1556 | rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &set); | |
1557 | if (rc) | |
0a3bdb00 | 1558 | return rc; |
d7e09d03 PT |
1559 | |
1560 | list_for_each (pos, &set->set_list) { | |
1561 | struct obd_export *sub_exp; | |
1562 | struct brw_page *sub_pga; | |
1563 | req = list_entry(pos, struct lov_request, rq_link); | |
1564 | ||
1565 | sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp; | |
1566 | sub_pga = set->set_pga + req->rq_pgaidx; | |
1567 | rc = obd_brw(cmd, sub_exp, &req->rq_oi, req->rq_oabufs, | |
1568 | sub_pga, oti); | |
1569 | if (rc) | |
1570 | break; | |
1571 | lov_update_common_set(set, req, rc); | |
1572 | } | |
1573 | ||
1574 | err = lov_fini_brw_set(set); | |
1575 | if (!rc) | |
1576 | rc = err; | |
0a3bdb00 | 1577 | return rc; |
d7e09d03 PT |
1578 | } |
1579 | ||
1580 | static int lov_enqueue_interpret(struct ptlrpc_request_set *rqset, | |
1581 | void *data, int rc) | |
1582 | { | |
1583 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
29aaf496 | 1584 | |
d7e09d03 | 1585 | rc = lov_fini_enqueue_set(lovset, lovset->set_ei->ei_mode, rc, rqset); |
0a3bdb00 | 1586 | return rc; |
d7e09d03 PT |
1587 | } |
1588 | ||
1589 | static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo, | |
1590 | struct ldlm_enqueue_info *einfo, | |
1591 | struct ptlrpc_request_set *rqset) | |
1592 | { | |
1593 | ldlm_mode_t mode = einfo->ei_mode; | |
1594 | struct lov_request_set *set; | |
1595 | struct lov_request *req; | |
1596 | struct list_head *pos; | |
1597 | struct lov_obd *lov; | |
1598 | ldlm_error_t rc; | |
d7e09d03 PT |
1599 | |
1600 | LASSERT(oinfo); | |
1601 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1602 | LASSERT(mode == (mode & -mode)); | |
1603 | ||
1604 | /* we should never be asked to replay a lock this way. */ | |
1605 | LASSERT((oinfo->oi_flags & LDLM_FL_REPLAY) == 0); | |
1606 | ||
1607 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1608 | return -ENODEV; |
d7e09d03 PT |
1609 | |
1610 | lov = &exp->exp_obd->u.lov; | |
1611 | rc = lov_prep_enqueue_set(exp, oinfo, einfo, &set); | |
1612 | if (rc) | |
0a3bdb00 | 1613 | return rc; |
d7e09d03 PT |
1614 | |
1615 | list_for_each (pos, &set->set_list) { | |
1616 | req = list_entry(pos, struct lov_request, rq_link); | |
1617 | ||
1618 | rc = obd_enqueue(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1619 | &req->rq_oi, einfo, rqset); | |
1620 | if (rc != ELDLM_OK) | |
1621 | GOTO(out, rc); | |
1622 | } | |
1623 | ||
1624 | if (rqset && !list_empty(&rqset->set_requests)) { | |
1625 | LASSERT(rc == 0); | |
1626 | LASSERT(rqset->set_interpret == NULL); | |
1627 | rqset->set_interpret = lov_enqueue_interpret; | |
1628 | rqset->set_arg = (void *)set; | |
0a3bdb00 | 1629 | return rc; |
d7e09d03 PT |
1630 | } |
1631 | out: | |
1632 | rc = lov_fini_enqueue_set(set, mode, rc, rqset); | |
0a3bdb00 | 1633 | return rc; |
d7e09d03 PT |
1634 | } |
1635 | ||
1636 | static int lov_change_cbdata(struct obd_export *exp, | |
1637 | struct lov_stripe_md *lsm, ldlm_iterator_t it, | |
1638 | void *data) | |
1639 | { | |
1640 | struct lov_obd *lov; | |
1641 | int rc = 0, i; | |
d7e09d03 PT |
1642 | |
1643 | ASSERT_LSM_MAGIC(lsm); | |
1644 | ||
1645 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1646 | return -ENODEV; |
d7e09d03 PT |
1647 | |
1648 | lov = &exp->exp_obd->u.lov; | |
1649 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
1650 | struct lov_stripe_md submd; | |
1651 | struct lov_oinfo *loi = lsm->lsm_oinfo[i]; | |
1652 | ||
1653 | if (!lov->lov_tgts[loi->loi_ost_idx]) { | |
1654 | CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx); | |
1655 | continue; | |
1656 | } | |
1657 | ||
1658 | submd.lsm_oi = loi->loi_oi; | |
1659 | submd.lsm_stripe_count = 0; | |
1660 | rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, | |
1661 | &submd, it, data); | |
1662 | } | |
0a3bdb00 | 1663 | return rc; |
d7e09d03 PT |
1664 | } |
1665 | ||
1666 | /* find any ldlm lock of the inode in lov | |
1667 | * return 0 not find | |
1668 | * 1 find one | |
1669 | * < 0 error */ | |
1670 | static int lov_find_cbdata(struct obd_export *exp, | |
1671 | struct lov_stripe_md *lsm, ldlm_iterator_t it, | |
1672 | void *data) | |
1673 | { | |
1674 | struct lov_obd *lov; | |
1675 | int rc = 0, i; | |
d7e09d03 PT |
1676 | |
1677 | ASSERT_LSM_MAGIC(lsm); | |
1678 | ||
1679 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1680 | return -ENODEV; |
d7e09d03 PT |
1681 | |
1682 | lov = &exp->exp_obd->u.lov; | |
1683 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
1684 | struct lov_stripe_md submd; | |
1685 | struct lov_oinfo *loi = lsm->lsm_oinfo[i]; | |
1686 | ||
1687 | if (!lov->lov_tgts[loi->loi_ost_idx]) { | |
1688 | CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx); | |
1689 | continue; | |
1690 | } | |
1691 | submd.lsm_oi = loi->loi_oi; | |
1692 | submd.lsm_stripe_count = 0; | |
1693 | rc = obd_find_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, | |
1694 | &submd, it, data); | |
1695 | if (rc != 0) | |
0a3bdb00 | 1696 | return rc; |
d7e09d03 | 1697 | } |
0a3bdb00 | 1698 | return rc; |
d7e09d03 PT |
1699 | } |
1700 | ||
1701 | static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm, | |
1702 | __u32 mode, struct lustre_handle *lockh) | |
1703 | { | |
1704 | struct lov_request_set *set; | |
1705 | struct obd_info oinfo; | |
1706 | struct lov_request *req; | |
1707 | struct list_head *pos; | |
1708 | struct lov_obd *lov; | |
1709 | struct lustre_handle *lov_lockhp; | |
1710 | int err = 0, rc = 0; | |
d7e09d03 PT |
1711 | |
1712 | ASSERT_LSM_MAGIC(lsm); | |
1713 | ||
1714 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1715 | return -ENODEV; |
d7e09d03 PT |
1716 | |
1717 | LASSERT(lockh); | |
1718 | lov = &exp->exp_obd->u.lov; | |
1719 | rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set); | |
1720 | if (rc) | |
0a3bdb00 | 1721 | return rc; |
d7e09d03 PT |
1722 | |
1723 | list_for_each(pos, &set->set_list) { | |
1724 | req = list_entry(pos, struct lov_request, rq_link); | |
1725 | lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe; | |
1726 | ||
1727 | rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1728 | req->rq_oi.oi_md, mode, lov_lockhp); | |
1729 | rc = lov_update_common_set(set, req, rc); | |
1730 | if (rc) { | |
1731 | CERROR("%s: cancel objid "DOSTID" subobj " | |
1732 | DOSTID" on OST idx %d: rc = %d\n", | |
1733 | exp->exp_obd->obd_name, POSTID(&lsm->lsm_oi), | |
1734 | POSTID(&req->rq_oi.oi_md->lsm_oi), | |
1735 | req->rq_idx, rc); | |
1736 | err = rc; | |
1737 | } | |
1738 | ||
1739 | } | |
1740 | lov_fini_cancel_set(set); | |
0a3bdb00 | 1741 | return err; |
d7e09d03 PT |
1742 | } |
1743 | ||
1744 | static int lov_cancel_unused(struct obd_export *exp, | |
1745 | struct lov_stripe_md *lsm, | |
1746 | ldlm_cancel_flags_t flags, void *opaque) | |
1747 | { | |
1748 | struct lov_obd *lov; | |
1749 | int rc = 0, i; | |
d7e09d03 PT |
1750 | |
1751 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1752 | return -ENODEV; |
d7e09d03 PT |
1753 | |
1754 | lov = &exp->exp_obd->u.lov; | |
1755 | if (lsm == NULL) { | |
1756 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
1757 | int err; | |
1758 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) | |
1759 | continue; | |
1760 | ||
1761 | err = obd_cancel_unused(lov->lov_tgts[i]->ltd_exp, NULL, | |
1762 | flags, opaque); | |
1763 | if (!rc) | |
1764 | rc = err; | |
1765 | } | |
0a3bdb00 | 1766 | return rc; |
d7e09d03 PT |
1767 | } |
1768 | ||
1769 | ASSERT_LSM_MAGIC(lsm); | |
1770 | ||
1771 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
1772 | struct lov_stripe_md submd; | |
1773 | struct lov_oinfo *loi = lsm->lsm_oinfo[i]; | |
1774 | int idx = loi->loi_ost_idx; | |
1775 | int err; | |
1776 | ||
1777 | if (!lov->lov_tgts[idx]) { | |
1778 | CDEBUG(D_HA, "lov idx %d NULL\n", idx); | |
1779 | continue; | |
1780 | } | |
1781 | ||
1782 | if (!lov->lov_tgts[idx]->ltd_active) | |
1783 | CDEBUG(D_HA, "lov idx %d inactive\n", idx); | |
1784 | ||
1785 | submd.lsm_oi = loi->loi_oi; | |
1786 | submd.lsm_stripe_count = 0; | |
1787 | err = obd_cancel_unused(lov->lov_tgts[idx]->ltd_exp, | |
1788 | &submd, flags, opaque); | |
1789 | if (err && lov->lov_tgts[idx]->ltd_active) { | |
1790 | CERROR("%s: cancel unused objid "DOSTID | |
1791 | " subobj "DOSTID" on OST idx %d: rc = %d\n", | |
1792 | exp->exp_obd->obd_name, POSTID(&lsm->lsm_oi), | |
1793 | POSTID(&loi->loi_oi), idx, err); | |
1794 | if (!rc) | |
1795 | rc = err; | |
1796 | } | |
1797 | } | |
0a3bdb00 | 1798 | return rc; |
d7e09d03 PT |
1799 | } |
1800 | ||
1801 | int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) | |
1802 | { | |
1803 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1804 | int err; | |
d7e09d03 PT |
1805 | |
1806 | if (rc) | |
1807 | atomic_set(&lovset->set_completes, 0); | |
1808 | ||
1809 | err = lov_fini_statfs_set(lovset); | |
0a3bdb00 | 1810 | return rc ? rc : err; |
d7e09d03 PT |
1811 | } |
1812 | ||
1813 | static int lov_statfs_async(struct obd_export *exp, struct obd_info *oinfo, | |
1814 | __u64 max_age, struct ptlrpc_request_set *rqset) | |
1815 | { | |
1816 | struct obd_device *obd = class_exp2obd(exp); | |
1817 | struct lov_request_set *set; | |
1818 | struct lov_request *req; | |
1819 | struct list_head *pos; | |
1820 | struct lov_obd *lov; | |
1821 | int rc = 0; | |
d7e09d03 PT |
1822 | |
1823 | LASSERT(oinfo != NULL); | |
1824 | LASSERT(oinfo->oi_osfs != NULL); | |
1825 | ||
1826 | lov = &obd->u.lov; | |
1827 | rc = lov_prep_statfs_set(obd, oinfo, &set); | |
1828 | if (rc) | |
0a3bdb00 | 1829 | return rc; |
d7e09d03 PT |
1830 | |
1831 | list_for_each (pos, &set->set_list) { | |
1832 | req = list_entry(pos, struct lov_request, rq_link); | |
1833 | rc = obd_statfs_async(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1834 | &req->rq_oi, max_age, rqset); | |
1835 | if (rc) | |
1836 | break; | |
1837 | } | |
1838 | ||
1839 | if (rc || list_empty(&rqset->set_requests)) { | |
1840 | int err; | |
1841 | if (rc) | |
1842 | atomic_set(&set->set_completes, 0); | |
1843 | err = lov_fini_statfs_set(set); | |
0a3bdb00 | 1844 | return rc ? rc : err; |
d7e09d03 PT |
1845 | } |
1846 | ||
1847 | LASSERT(rqset->set_interpret == NULL); | |
1848 | rqset->set_interpret = lov_statfs_interpret; | |
1849 | rqset->set_arg = (void *)set; | |
0a3bdb00 | 1850 | return 0; |
d7e09d03 PT |
1851 | } |
1852 | ||
1853 | static int lov_statfs(const struct lu_env *env, struct obd_export *exp, | |
1854 | struct obd_statfs *osfs, __u64 max_age, __u32 flags) | |
1855 | { | |
1856 | struct ptlrpc_request_set *set = NULL; | |
1857 | struct obd_info oinfo = { { { 0 } } }; | |
1858 | int rc = 0; | |
d7e09d03 PT |
1859 | |
1860 | /* for obdclass we forbid using obd_statfs_rqset, but prefer using async | |
1861 | * statfs requests */ | |
1862 | set = ptlrpc_prep_set(); | |
1863 | if (set == NULL) | |
0a3bdb00 | 1864 | return -ENOMEM; |
d7e09d03 PT |
1865 | |
1866 | oinfo.oi_osfs = osfs; | |
1867 | oinfo.oi_flags = flags; | |
1868 | rc = lov_statfs_async(exp, &oinfo, max_age, set); | |
1869 | if (rc == 0) | |
1870 | rc = ptlrpc_set_wait(set); | |
1871 | ptlrpc_set_destroy(set); | |
1872 | ||
0a3bdb00 | 1873 | return rc; |
d7e09d03 PT |
1874 | } |
1875 | ||
1876 | static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len, | |
1877 | void *karg, void *uarg) | |
1878 | { | |
1879 | struct obd_device *obddev = class_exp2obd(exp); | |
1880 | struct lov_obd *lov = &obddev->u.lov; | |
1881 | int i = 0, rc = 0, count = lov->desc.ld_tgt_count; | |
1882 | struct obd_uuid *uuidp; | |
d7e09d03 PT |
1883 | |
1884 | switch (cmd) { | |
1885 | case IOC_OBD_STATFS: { | |
1886 | struct obd_ioctl_data *data = karg; | |
1887 | struct obd_device *osc_obd; | |
1888 | struct obd_statfs stat_buf = {0}; | |
1889 | __u32 index; | |
1890 | __u32 flags; | |
1891 | ||
1892 | memcpy(&index, data->ioc_inlbuf2, sizeof(__u32)); | |
1893 | if ((index >= count)) | |
0a3bdb00 | 1894 | return -ENODEV; |
d7e09d03 PT |
1895 | |
1896 | if (!lov->lov_tgts[index]) | |
1897 | /* Try again with the next index */ | |
0a3bdb00 | 1898 | return -EAGAIN; |
d7e09d03 | 1899 | if (!lov->lov_tgts[index]->ltd_active) |
0a3bdb00 | 1900 | return -ENODATA; |
d7e09d03 PT |
1901 | |
1902 | osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp); | |
1903 | if (!osc_obd) | |
0a3bdb00 | 1904 | return -EINVAL; |
d7e09d03 PT |
1905 | |
1906 | /* copy UUID */ | |
1907 | if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd), | |
1908 | min((int) data->ioc_plen2, | |
1909 | (int) sizeof(struct obd_uuid)))) | |
0a3bdb00 | 1910 | return -EFAULT; |
d7e09d03 PT |
1911 | |
1912 | flags = uarg ? *(__u32*)uarg : 0; | |
1913 | /* got statfs data */ | |
1914 | rc = obd_statfs(NULL, lov->lov_tgts[index]->ltd_exp, &stat_buf, | |
1915 | cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), | |
1916 | flags); | |
1917 | if (rc) | |
0a3bdb00 | 1918 | return rc; |
d7e09d03 PT |
1919 | if (copy_to_user(data->ioc_pbuf1, &stat_buf, |
1920 | min((int) data->ioc_plen1, | |
1921 | (int) sizeof(stat_buf)))) | |
0a3bdb00 | 1922 | return -EFAULT; |
d7e09d03 PT |
1923 | break; |
1924 | } | |
1925 | case OBD_IOC_LOV_GET_CONFIG: { | |
1926 | struct obd_ioctl_data *data; | |
1927 | struct lov_desc *desc; | |
1928 | char *buf = NULL; | |
1929 | __u32 *genp; | |
1930 | ||
1931 | len = 0; | |
1932 | if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) | |
0a3bdb00 | 1933 | return -EINVAL; |
d7e09d03 PT |
1934 | |
1935 | data = (struct obd_ioctl_data *)buf; | |
1936 | ||
1937 | if (sizeof(*desc) > data->ioc_inllen1) { | |
1938 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1939 | return -EINVAL; |
d7e09d03 PT |
1940 | } |
1941 | ||
1942 | if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) { | |
1943 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1944 | return -EINVAL; |
d7e09d03 PT |
1945 | } |
1946 | ||
1947 | if (sizeof(__u32) * count > data->ioc_inllen3) { | |
1948 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1949 | return -EINVAL; |
d7e09d03 PT |
1950 | } |
1951 | ||
1952 | desc = (struct lov_desc *)data->ioc_inlbuf1; | |
1953 | memcpy(desc, &(lov->desc), sizeof(*desc)); | |
1954 | ||
1955 | uuidp = (struct obd_uuid *)data->ioc_inlbuf2; | |
1956 | genp = (__u32 *)data->ioc_inlbuf3; | |
1957 | /* the uuid will be empty for deleted OSTs */ | |
1958 | for (i = 0; i < count; i++, uuidp++, genp++) { | |
1959 | if (!lov->lov_tgts[i]) | |
1960 | continue; | |
1961 | *uuidp = lov->lov_tgts[i]->ltd_uuid; | |
1962 | *genp = lov->lov_tgts[i]->ltd_gen; | |
1963 | } | |
1964 | ||
1965 | if (copy_to_user((void *)uarg, buf, len)) | |
1966 | rc = -EFAULT; | |
1967 | obd_ioctl_freedata(buf, len); | |
1968 | break; | |
1969 | } | |
1970 | case LL_IOC_LOV_SETSTRIPE: | |
1971 | rc = lov_setstripe(exp, len, karg, uarg); | |
1972 | break; | |
1973 | case LL_IOC_LOV_GETSTRIPE: | |
1974 | rc = lov_getstripe(exp, karg, uarg); | |
1975 | break; | |
1976 | case LL_IOC_LOV_SETEA: | |
1977 | rc = lov_setea(exp, karg, uarg); | |
1978 | break; | |
1979 | case OBD_IOC_QUOTACTL: { | |
1980 | struct if_quotactl *qctl = karg; | |
1981 | struct lov_tgt_desc *tgt = NULL; | |
1982 | struct obd_quotactl *oqctl; | |
1983 | ||
1984 | if (qctl->qc_valid == QC_OSTIDX) { | |
1985 | if (qctl->qc_idx < 0 || count <= qctl->qc_idx) | |
0a3bdb00 | 1986 | return -EINVAL; |
d7e09d03 PT |
1987 | |
1988 | tgt = lov->lov_tgts[qctl->qc_idx]; | |
1989 | if (!tgt || !tgt->ltd_exp) | |
0a3bdb00 | 1990 | return -EINVAL; |
d7e09d03 PT |
1991 | } else if (qctl->qc_valid == QC_UUID) { |
1992 | for (i = 0; i < count; i++) { | |
1993 | tgt = lov->lov_tgts[i]; | |
1994 | if (!tgt || | |
1995 | !obd_uuid_equals(&tgt->ltd_uuid, | |
1996 | &qctl->obd_uuid)) | |
1997 | continue; | |
1998 | ||
1999 | if (tgt->ltd_exp == NULL) | |
0a3bdb00 | 2000 | return -EINVAL; |
d7e09d03 PT |
2001 | |
2002 | break; | |
2003 | } | |
2004 | } else { | |
0a3bdb00 | 2005 | return -EINVAL; |
d7e09d03 PT |
2006 | } |
2007 | ||
2008 | if (i >= count) | |
0a3bdb00 | 2009 | return -EAGAIN; |
d7e09d03 PT |
2010 | |
2011 | LASSERT(tgt && tgt->ltd_exp); | |
2012 | OBD_ALLOC_PTR(oqctl); | |
2013 | if (!oqctl) | |
0a3bdb00 | 2014 | return -ENOMEM; |
d7e09d03 PT |
2015 | |
2016 | QCTL_COPY(oqctl, qctl); | |
2017 | rc = obd_quotactl(tgt->ltd_exp, oqctl); | |
2018 | if (rc == 0) { | |
2019 | QCTL_COPY(qctl, oqctl); | |
2020 | qctl->qc_valid = QC_OSTIDX; | |
2021 | qctl->obd_uuid = tgt->ltd_uuid; | |
2022 | } | |
2023 | OBD_FREE_PTR(oqctl); | |
2024 | break; | |
2025 | } | |
2026 | default: { | |
2027 | int set = 0; | |
2028 | ||
2029 | if (count == 0) | |
0a3bdb00 | 2030 | return -ENOTTY; |
d7e09d03 PT |
2031 | |
2032 | for (i = 0; i < count; i++) { | |
2033 | int err; | |
2034 | struct obd_device *osc_obd; | |
2035 | ||
2036 | /* OST was disconnected */ | |
2037 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) | |
2038 | continue; | |
2039 | ||
2040 | /* ll_umount_begin() sets force flag but for lov, not | |
2041 | * osc. Let's pass it through */ | |
2042 | osc_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp); | |
2043 | osc_obd->obd_force = obddev->obd_force; | |
2044 | err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp, | |
2045 | len, karg, uarg); | |
2046 | if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) { | |
0a3bdb00 | 2047 | return err; |
d7e09d03 PT |
2048 | } else if (err) { |
2049 | if (lov->lov_tgts[i]->ltd_active) { | |
2050 | CDEBUG(err == -ENOTTY ? | |
2051 | D_IOCTL : D_WARNING, | |
2052 | "iocontrol OSC %s on OST " | |
2053 | "idx %d cmd %x: err = %d\n", | |
2054 | lov_uuid2str(lov, i), | |
2055 | i, cmd, err); | |
2056 | if (!rc) | |
2057 | rc = err; | |
2058 | } | |
2059 | } else { | |
2060 | set = 1; | |
2061 | } | |
2062 | } | |
2063 | if (!set && !rc) | |
2064 | rc = -EIO; | |
2065 | } | |
2066 | } | |
2067 | ||
0a3bdb00 | 2068 | return rc; |
d7e09d03 PT |
2069 | } |
2070 | ||
2071 | #define FIEMAP_BUFFER_SIZE 4096 | |
2072 | ||
2073 | /** | |
2074 | * Non-zero fe_logical indicates that this is a continuation FIEMAP | |
2075 | * call. The local end offset and the device are sent in the first | |
2076 | * fm_extent. This function calculates the stripe number from the index. | |
2077 | * This function returns a stripe_no on which mapping is to be restarted. | |
2078 | * | |
2079 | * This function returns fm_end_offset which is the in-OST offset at which | |
2080 | * mapping should be restarted. If fm_end_offset=0 is returned then caller | |
2081 | * will re-calculate proper offset in next stripe. | |
2082 | * Note that the first extent is passed to lov_get_info via the value field. | |
2083 | * | |
2084 | * \param fiemap fiemap request header | |
2085 | * \param lsm striping information for the file | |
2086 | * \param fm_start logical start of mapping | |
2087 | * \param fm_end logical end of mapping | |
2088 | * \param start_stripe starting stripe will be returned in this | |
2089 | */ | |
2090 | obd_size fiemap_calc_fm_end_offset(struct ll_user_fiemap *fiemap, | |
2091 | struct lov_stripe_md *lsm, obd_size fm_start, | |
2092 | obd_size fm_end, int *start_stripe) | |
2093 | { | |
2094 | obd_size local_end = fiemap->fm_extents[0].fe_logical; | |
2095 | obd_off lun_start, lun_end; | |
2096 | obd_size fm_end_offset; | |
2097 | int stripe_no = -1, i; | |
2098 | ||
2099 | if (fiemap->fm_extent_count == 0 || | |
2100 | fiemap->fm_extents[0].fe_logical == 0) | |
2101 | return 0; | |
2102 | ||
2103 | /* Find out stripe_no from ost_index saved in the fe_device */ | |
2104 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
2105 | if (lsm->lsm_oinfo[i]->loi_ost_idx == | |
2106 | fiemap->fm_extents[0].fe_device) { | |
2107 | stripe_no = i; | |
2108 | break; | |
2109 | } | |
2110 | } | |
2111 | if (stripe_no == -1) | |
2112 | return -EINVAL; | |
2113 | ||
2114 | /* If we have finished mapping on previous device, shift logical | |
2115 | * offset to start of next device */ | |
2116 | if ((lov_stripe_intersects(lsm, stripe_no, fm_start, fm_end, | |
2117 | &lun_start, &lun_end)) != 0 && | |
2118 | local_end < lun_end) { | |
2119 | fm_end_offset = local_end; | |
2120 | *start_stripe = stripe_no; | |
2121 | } else { | |
2122 | /* This is a special value to indicate that caller should | |
2123 | * calculate offset in next stripe. */ | |
2124 | fm_end_offset = 0; | |
2125 | *start_stripe = (stripe_no + 1) % lsm->lsm_stripe_count; | |
2126 | } | |
2127 | ||
2128 | return fm_end_offset; | |
2129 | } | |
2130 | ||
2131 | /** | |
2132 | * We calculate on which OST the mapping will end. If the length of mapping | |
2133 | * is greater than (stripe_size * stripe_count) then the last_stripe will | |
2134 | * will be one just before start_stripe. Else we check if the mapping | |
2135 | * intersects each OST and find last_stripe. | |
2136 | * This function returns the last_stripe and also sets the stripe_count | |
2137 | * over which the mapping is spread | |
2138 | * | |
2139 | * \param lsm striping information for the file | |
2140 | * \param fm_start logical start of mapping | |
2141 | * \param fm_end logical end of mapping | |
2142 | * \param start_stripe starting stripe of the mapping | |
2143 | * \param stripe_count the number of stripes across which to map is returned | |
2144 | * | |
2145 | * \retval last_stripe return the last stripe of the mapping | |
2146 | */ | |
2147 | int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, obd_size fm_start, | |
2148 | obd_size fm_end, int start_stripe, | |
2149 | int *stripe_count) | |
2150 | { | |
2151 | int last_stripe; | |
2152 | obd_off obd_start, obd_end; | |
2153 | int i, j; | |
2154 | ||
2155 | if (fm_end - fm_start > lsm->lsm_stripe_size * lsm->lsm_stripe_count) { | |
2156 | last_stripe = (start_stripe < 1 ? lsm->lsm_stripe_count - 1 : | |
2157 | start_stripe - 1); | |
2158 | *stripe_count = lsm->lsm_stripe_count; | |
2159 | } else { | |
2160 | for (j = 0, i = start_stripe; j < lsm->lsm_stripe_count; | |
2161 | i = (i + 1) % lsm->lsm_stripe_count, j++) { | |
2162 | if ((lov_stripe_intersects(lsm, i, fm_start, fm_end, | |
2163 | &obd_start, &obd_end)) == 0) | |
2164 | break; | |
2165 | } | |
2166 | *stripe_count = j; | |
2167 | last_stripe = (start_stripe + j - 1) %lsm->lsm_stripe_count; | |
2168 | } | |
2169 | ||
2170 | return last_stripe; | |
2171 | } | |
2172 | ||
2173 | /** | |
2174 | * Set fe_device and copy extents from local buffer into main return buffer. | |
2175 | * | |
2176 | * \param fiemap fiemap request header | |
2177 | * \param lcl_fm_ext array of local fiemap extents to be copied | |
2178 | * \param ost_index OST index to be written into the fm_device field for each | |
2179 | extent | |
2180 | * \param ext_count number of extents to be copied | |
2181 | * \param current_extent where to start copying in main extent array | |
2182 | */ | |
2183 | void fiemap_prepare_and_copy_exts(struct ll_user_fiemap *fiemap, | |
2184 | struct ll_fiemap_extent *lcl_fm_ext, | |
2185 | int ost_index, unsigned int ext_count, | |
2186 | int current_extent) | |
2187 | { | |
2188 | char *to; | |
2189 | int ext; | |
2190 | ||
2191 | for (ext = 0; ext < ext_count; ext++) { | |
2192 | lcl_fm_ext[ext].fe_device = ost_index; | |
2193 | lcl_fm_ext[ext].fe_flags |= FIEMAP_EXTENT_NET; | |
2194 | } | |
2195 | ||
2196 | /* Copy fm_extent's from fm_local to return buffer */ | |
2197 | to = (char *)fiemap + fiemap_count_to_size(current_extent); | |
2198 | memcpy(to, lcl_fm_ext, ext_count * sizeof(struct ll_fiemap_extent)); | |
2199 | } | |
2200 | ||
2201 | /** | |
2202 | * Break down the FIEMAP request and send appropriate calls to individual OSTs. | |
2203 | * This also handles the restarting of FIEMAP calls in case mapping overflows | |
2204 | * the available number of extents in single call. | |
2205 | */ | |
2206 | static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key, | |
2207 | __u32 *vallen, void *val, struct lov_stripe_md *lsm) | |
2208 | { | |
2209 | struct ll_fiemap_info_key *fm_key = key; | |
2210 | struct ll_user_fiemap *fiemap = val; | |
2211 | struct ll_user_fiemap *fm_local = NULL; | |
2212 | struct ll_fiemap_extent *lcl_fm_ext; | |
2213 | int count_local; | |
2214 | unsigned int get_num_extents = 0; | |
2215 | int ost_index = 0, actual_start_stripe, start_stripe; | |
2216 | obd_size fm_start, fm_end, fm_length, fm_end_offset; | |
2217 | obd_size curr_loc; | |
2218 | int current_extent = 0, rc = 0, i; | |
2219 | int ost_eof = 0; /* EOF for object */ | |
2220 | int ost_done = 0; /* done with required mapping for this OST? */ | |
2221 | int last_stripe; | |
2222 | int cur_stripe = 0, cur_stripe_wrap = 0, stripe_count; | |
2223 | unsigned int buffer_size = FIEMAP_BUFFER_SIZE; | |
2224 | ||
5dd16419 | 2225 | if (!lsm_has_objects(lsm)) |
d7e09d03 PT |
2226 | GOTO(out, rc = 0); |
2227 | ||
2228 | if (fiemap_count_to_size(fm_key->fiemap.fm_extent_count) < buffer_size) | |
2229 | buffer_size = fiemap_count_to_size(fm_key->fiemap.fm_extent_count); | |
2230 | ||
2231 | OBD_ALLOC_LARGE(fm_local, buffer_size); | |
2232 | if (fm_local == NULL) | |
2233 | GOTO(out, rc = -ENOMEM); | |
2234 | lcl_fm_ext = &fm_local->fm_extents[0]; | |
2235 | ||
2236 | count_local = fiemap_size_to_count(buffer_size); | |
2237 | ||
2238 | memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap)); | |
2239 | fm_start = fiemap->fm_start; | |
2240 | fm_length = fiemap->fm_length; | |
2241 | /* Calculate start stripe, last stripe and length of mapping */ | |
2242 | actual_start_stripe = start_stripe = lov_stripe_number(lsm, fm_start); | |
2243 | fm_end = (fm_length == ~0ULL ? fm_key->oa.o_size : | |
2244 | fm_start + fm_length - 1); | |
2245 | /* If fm_length != ~0ULL but fm_start+fm_length-1 exceeds file size */ | |
2246 | if (fm_end > fm_key->oa.o_size) | |
2247 | fm_end = fm_key->oa.o_size; | |
2248 | ||
2249 | last_stripe = fiemap_calc_last_stripe(lsm, fm_start, fm_end, | |
2250 | actual_start_stripe, &stripe_count); | |
2251 | ||
2252 | fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start, | |
2253 | fm_end, &start_stripe); | |
2254 | if (fm_end_offset == -EINVAL) | |
2255 | GOTO(out, rc = -EINVAL); | |
2256 | ||
2257 | if (fiemap->fm_extent_count == 0) { | |
2258 | get_num_extents = 1; | |
2259 | count_local = 0; | |
2260 | } | |
2261 | ||
2262 | /* Check each stripe */ | |
2263 | for (cur_stripe = start_stripe, i = 0; i < stripe_count; | |
2264 | i++, cur_stripe = (cur_stripe + 1) % lsm->lsm_stripe_count) { | |
2265 | obd_size req_fm_len; /* Stores length of required mapping */ | |
2266 | obd_size len_mapped_single_call; | |
2267 | obd_off lun_start, lun_end, obd_object_end; | |
2268 | unsigned int ext_count; | |
2269 | ||
2270 | cur_stripe_wrap = cur_stripe; | |
2271 | ||
2272 | /* Find out range of mapping on this stripe */ | |
2273 | if ((lov_stripe_intersects(lsm, cur_stripe, fm_start, fm_end, | |
2274 | &lun_start, &obd_object_end)) == 0) | |
2275 | continue; | |
2276 | ||
2277 | /* If this is a continuation FIEMAP call and we are on | |
2278 | * starting stripe then lun_start needs to be set to | |
2279 | * fm_end_offset */ | |
2280 | if (fm_end_offset != 0 && cur_stripe == start_stripe) | |
2281 | lun_start = fm_end_offset; | |
2282 | ||
2283 | if (fm_length != ~0ULL) { | |
2284 | /* Handle fm_start + fm_length overflow */ | |
2285 | if (fm_start + fm_length < fm_start) | |
2286 | fm_length = ~0ULL - fm_start; | |
2287 | lun_end = lov_size_to_stripe(lsm, fm_start + fm_length, | |
2288 | cur_stripe); | |
2289 | } else { | |
2290 | lun_end = ~0ULL; | |
2291 | } | |
2292 | ||
2293 | if (lun_start == lun_end) | |
2294 | continue; | |
2295 | ||
2296 | req_fm_len = obd_object_end - lun_start; | |
2297 | fm_local->fm_length = 0; | |
2298 | len_mapped_single_call = 0; | |
2299 | ||
2300 | /* If the output buffer is very large and the objects have many | |
2301 | * extents we may need to loop on a single OST repeatedly */ | |
2302 | ost_eof = 0; | |
2303 | ost_done = 0; | |
2304 | do { | |
2305 | if (get_num_extents == 0) { | |
2306 | /* Don't get too many extents. */ | |
2307 | if (current_extent + count_local > | |
2308 | fiemap->fm_extent_count) | |
2309 | count_local = fiemap->fm_extent_count - | |
2310 | current_extent; | |
2311 | } | |
2312 | ||
2313 | lun_start += len_mapped_single_call; | |
2314 | fm_local->fm_length = req_fm_len - len_mapped_single_call; | |
2315 | req_fm_len = fm_local->fm_length; | |
2316 | fm_local->fm_extent_count = count_local; | |
2317 | fm_local->fm_mapped_extents = 0; | |
2318 | fm_local->fm_flags = fiemap->fm_flags; | |
2319 | ||
2320 | fm_key->oa.o_oi = lsm->lsm_oinfo[cur_stripe]->loi_oi; | |
2321 | ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx; | |
2322 | ||
2323 | if (ost_index < 0 || ost_index >=lov->desc.ld_tgt_count) | |
2324 | GOTO(out, rc = -EINVAL); | |
2325 | ||
2326 | /* If OST is inactive, return extent with UNKNOWN flag */ | |
2327 | if (!lov->lov_tgts[ost_index]->ltd_active) { | |
2328 | fm_local->fm_flags |= FIEMAP_EXTENT_LAST; | |
2329 | fm_local->fm_mapped_extents = 1; | |
2330 | ||
2331 | lcl_fm_ext[0].fe_logical = lun_start; | |
2332 | lcl_fm_ext[0].fe_length = obd_object_end - | |
2333 | lun_start; | |
2334 | lcl_fm_ext[0].fe_flags |= FIEMAP_EXTENT_UNKNOWN; | |
2335 | ||
2336 | goto inactive_tgt; | |
2337 | } | |
2338 | ||
2339 | fm_local->fm_start = lun_start; | |
2340 | fm_local->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER; | |
2341 | memcpy(&fm_key->fiemap, fm_local, sizeof(*fm_local)); | |
2342 | *vallen=fiemap_count_to_size(fm_local->fm_extent_count); | |
2343 | rc = obd_get_info(NULL, | |
2344 | lov->lov_tgts[ost_index]->ltd_exp, | |
2345 | keylen, key, vallen, fm_local, lsm); | |
2346 | if (rc != 0) | |
2347 | GOTO(out, rc); | |
2348 | ||
2349 | inactive_tgt: | |
2350 | ext_count = fm_local->fm_mapped_extents; | |
2351 | if (ext_count == 0) { | |
2352 | ost_done = 1; | |
2353 | /* If last stripe has hole at the end, | |
2354 | * then we need to return */ | |
2355 | if (cur_stripe_wrap == last_stripe) { | |
2356 | fiemap->fm_mapped_extents = 0; | |
2357 | goto finish; | |
2358 | } | |
2359 | break; | |
2360 | } | |
2361 | ||
2362 | /* If we just need num of extents then go to next device */ | |
2363 | if (get_num_extents) { | |
2364 | current_extent += ext_count; | |
2365 | break; | |
2366 | } | |
2367 | ||
2368 | len_mapped_single_call = lcl_fm_ext[ext_count-1].fe_logical - | |
2369 | lun_start + lcl_fm_ext[ext_count - 1].fe_length; | |
2370 | ||
2371 | /* Have we finished mapping on this device? */ | |
2372 | if (req_fm_len <= len_mapped_single_call) | |
2373 | ost_done = 1; | |
2374 | ||
2375 | /* Clear the EXTENT_LAST flag which can be present on | |
2376 | * last extent */ | |
2377 | if (lcl_fm_ext[ext_count-1].fe_flags & FIEMAP_EXTENT_LAST) | |
2378 | lcl_fm_ext[ext_count - 1].fe_flags &= | |
2379 | ~FIEMAP_EXTENT_LAST; | |
2380 | ||
2381 | curr_loc = lov_stripe_size(lsm, | |
2382 | lcl_fm_ext[ext_count - 1].fe_logical+ | |
2383 | lcl_fm_ext[ext_count - 1].fe_length, | |
2384 | cur_stripe); | |
2385 | if (curr_loc >= fm_key->oa.o_size) | |
2386 | ost_eof = 1; | |
2387 | ||
2388 | fiemap_prepare_and_copy_exts(fiemap, lcl_fm_ext, | |
2389 | ost_index, ext_count, | |
2390 | current_extent); | |
2391 | ||
2392 | current_extent += ext_count; | |
2393 | ||
2394 | /* Ran out of available extents? */ | |
2395 | if (current_extent >= fiemap->fm_extent_count) | |
2396 | goto finish; | |
2397 | } while (ost_done == 0 && ost_eof == 0); | |
2398 | ||
2399 | if (cur_stripe_wrap == last_stripe) | |
2400 | goto finish; | |
2401 | } | |
2402 | ||
2403 | finish: | |
2404 | /* Indicate that we are returning device offsets unless file just has | |
2405 | * single stripe */ | |
2406 | if (lsm->lsm_stripe_count > 1) | |
2407 | fiemap->fm_flags |= FIEMAP_FLAG_DEVICE_ORDER; | |
2408 | ||
2409 | if (get_num_extents) | |
2410 | goto skip_last_device_calc; | |
2411 | ||
2412 | /* Check if we have reached the last stripe and whether mapping for that | |
2413 | * stripe is done. */ | |
2414 | if (cur_stripe_wrap == last_stripe) { | |
2415 | if (ost_done || ost_eof) | |
2416 | fiemap->fm_extents[current_extent - 1].fe_flags |= | |
2417 | FIEMAP_EXTENT_LAST; | |
2418 | } | |
2419 | ||
2420 | skip_last_device_calc: | |
2421 | fiemap->fm_mapped_extents = current_extent; | |
2422 | ||
2423 | out: | |
2424 | OBD_FREE_LARGE(fm_local, buffer_size); | |
2425 | return rc; | |
2426 | } | |
2427 | ||
2428 | static int lov_get_info(const struct lu_env *env, struct obd_export *exp, | |
2429 | __u32 keylen, void *key, __u32 *vallen, void *val, | |
2430 | struct lov_stripe_md *lsm) | |
2431 | { | |
2432 | struct obd_device *obddev = class_exp2obd(exp); | |
2433 | struct lov_obd *lov = &obddev->u.lov; | |
2434 | int i, rc; | |
d7e09d03 PT |
2435 | |
2436 | if (!vallen || !val) | |
0a3bdb00 | 2437 | return -EFAULT; |
d7e09d03 PT |
2438 | |
2439 | obd_getref(obddev); | |
2440 | ||
2441 | if (KEY_IS(KEY_LOCK_TO_STRIPE)) { | |
2442 | struct { | |
2443 | char name[16]; | |
2444 | struct ldlm_lock *lock; | |
2445 | } *data = key; | |
2446 | struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name; | |
2447 | struct lov_oinfo *loi; | |
2448 | __u32 *stripe = val; | |
2449 | ||
2450 | if (*vallen < sizeof(*stripe)) | |
2451 | GOTO(out, rc = -EFAULT); | |
2452 | *vallen = sizeof(*stripe); | |
2453 | ||
2454 | /* XXX This is another one of those bits that will need to | |
2455 | * change if we ever actually support nested LOVs. It uses | |
2456 | * the lock's export to find out which stripe it is. */ | |
2457 | /* XXX - it's assumed all the locks for deleted OSTs have | |
2458 | * been cancelled. Also, the export for deleted OSTs will | |
2459 | * be NULL and won't match the lock's export. */ | |
2460 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
2461 | loi = lsm->lsm_oinfo[i]; | |
2462 | if (!lov->lov_tgts[loi->loi_ost_idx]) | |
2463 | continue; | |
2464 | if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp == | |
2465 | data->lock->l_conn_export && | |
2466 | ostid_res_name_eq(&loi->loi_oi, res_id)) { | |
2467 | *stripe = i; | |
2468 | GOTO(out, rc = 0); | |
2469 | } | |
2470 | } | |
2471 | LDLM_ERROR(data->lock, "lock on inode without such object"); | |
2472 | dump_lsm(D_ERROR, lsm); | |
2473 | GOTO(out, rc = -ENXIO); | |
2474 | } else if (KEY_IS(KEY_LAST_ID)) { | |
2475 | struct obd_id_info *info = val; | |
2476 | __u32 size = sizeof(obd_id); | |
2477 | struct lov_tgt_desc *tgt; | |
2478 | ||
2479 | LASSERT(*vallen == sizeof(struct obd_id_info)); | |
2480 | tgt = lov->lov_tgts[info->idx]; | |
2481 | ||
2482 | if (!tgt || !tgt->ltd_active) | |
2483 | GOTO(out, rc = -ESRCH); | |
2484 | ||
2485 | rc = obd_get_info(env, tgt->ltd_exp, keylen, key, | |
2486 | &size, info->data, NULL); | |
2487 | GOTO(out, rc = 0); | |
2488 | } else if (KEY_IS(KEY_LOVDESC)) { | |
2489 | struct lov_desc *desc_ret = val; | |
2490 | *desc_ret = lov->desc; | |
2491 | ||
2492 | GOTO(out, rc = 0); | |
2493 | } else if (KEY_IS(KEY_FIEMAP)) { | |
2494 | rc = lov_fiemap(lov, keylen, key, vallen, val, lsm); | |
2495 | GOTO(out, rc); | |
2496 | } else if (KEY_IS(KEY_CONNECT_FLAG)) { | |
2497 | struct lov_tgt_desc *tgt; | |
2498 | __u64 ost_idx = *((__u64*)val); | |
2499 | ||
2500 | LASSERT(*vallen == sizeof(__u64)); | |
2501 | LASSERT(ost_idx < lov->desc.ld_tgt_count); | |
2502 | tgt = lov->lov_tgts[ost_idx]; | |
2503 | ||
2504 | if (!tgt || !tgt->ltd_exp) | |
2505 | GOTO(out, rc = -ESRCH); | |
2506 | ||
2507 | *((__u64 *)val) = exp_connect_flags(tgt->ltd_exp); | |
2508 | GOTO(out, rc = 0); | |
2509 | } else if (KEY_IS(KEY_TGT_COUNT)) { | |
2510 | *((int *)val) = lov->desc.ld_tgt_count; | |
2511 | GOTO(out, rc = 0); | |
2512 | } | |
2513 | ||
2514 | rc = -EINVAL; | |
2515 | ||
2516 | out: | |
2517 | obd_putref(obddev); | |
0a3bdb00 | 2518 | return rc; |
d7e09d03 PT |
2519 | } |
2520 | ||
2521 | static int lov_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
2522 | obd_count keylen, void *key, obd_count vallen, | |
2523 | void *val, struct ptlrpc_request_set *set) | |
2524 | { | |
2525 | struct obd_device *obddev = class_exp2obd(exp); | |
2526 | struct lov_obd *lov = &obddev->u.lov; | |
2527 | obd_count count; | |
2528 | int i, rc = 0, err; | |
2529 | struct lov_tgt_desc *tgt; | |
2530 | unsigned incr, check_uuid, | |
2531 | do_inactive, no_set; | |
2532 | unsigned next_id = 0, mds_con = 0, capa = 0; | |
d7e09d03 PT |
2533 | |
2534 | incr = check_uuid = do_inactive = no_set = 0; | |
2535 | if (set == NULL) { | |
2536 | no_set = 1; | |
2537 | set = ptlrpc_prep_set(); | |
2538 | if (!set) | |
0a3bdb00 | 2539 | return -ENOMEM; |
d7e09d03 PT |
2540 | } |
2541 | ||
2542 | obd_getref(obddev); | |
2543 | count = lov->desc.ld_tgt_count; | |
2544 | ||
2545 | if (KEY_IS(KEY_NEXT_ID)) { | |
2546 | count = vallen / sizeof(struct obd_id_info); | |
2547 | vallen = sizeof(obd_id); | |
2548 | incr = sizeof(struct obd_id_info); | |
2549 | do_inactive = 1; | |
2550 | next_id = 1; | |
2551 | } else if (KEY_IS(KEY_CHECKSUM)) { | |
2552 | do_inactive = 1; | |
2553 | } else if (KEY_IS(KEY_EVICT_BY_NID)) { | |
2554 | /* use defaults: do_inactive = incr = 0; */ | |
2555 | } else if (KEY_IS(KEY_MDS_CONN)) { | |
2556 | mds_con = 1; | |
2557 | } else if (KEY_IS(KEY_CAPA_KEY)) { | |
2558 | capa = 1; | |
2559 | } else if (KEY_IS(KEY_CACHE_SET)) { | |
2560 | LASSERT(lov->lov_cache == NULL); | |
2561 | lov->lov_cache = val; | |
2562 | do_inactive = 1; | |
2563 | } | |
2564 | ||
2565 | for (i = 0; i < count; i++, val = (char *)val + incr) { | |
2566 | if (next_id) { | |
2567 | tgt = lov->lov_tgts[((struct obd_id_info*)val)->idx]; | |
2568 | } else { | |
2569 | tgt = lov->lov_tgts[i]; | |
2570 | } | |
2571 | /* OST was disconnected */ | |
2572 | if (!tgt || !tgt->ltd_exp) | |
2573 | continue; | |
2574 | ||
2575 | /* OST is inactive and we don't want inactive OSCs */ | |
2576 | if (!tgt->ltd_active && !do_inactive) | |
2577 | continue; | |
2578 | ||
2579 | if (mds_con) { | |
2580 | struct mds_group_info *mgi; | |
2581 | ||
2582 | LASSERT(vallen == sizeof(*mgi)); | |
2583 | mgi = (struct mds_group_info *)val; | |
2584 | ||
2585 | /* Only want a specific OSC */ | |
2586 | if (mgi->uuid && !obd_uuid_equals(mgi->uuid, | |
2587 | &tgt->ltd_uuid)) | |
2588 | continue; | |
2589 | ||
2590 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2591 | keylen, key, sizeof(int), | |
2592 | &mgi->group, set); | |
2593 | } else if (next_id) { | |
2594 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2595 | keylen, key, vallen, | |
2596 | ((struct obd_id_info*)val)->data, set); | |
2597 | } else if (capa) { | |
2598 | struct mds_capa_info *info = (struct mds_capa_info*)val; | |
2599 | ||
2600 | LASSERT(vallen == sizeof(*info)); | |
2601 | ||
2602 | /* Only want a specific OSC */ | |
2603 | if (info->uuid && | |
2604 | !obd_uuid_equals(info->uuid, &tgt->ltd_uuid)) | |
2605 | continue; | |
2606 | ||
2607 | err = obd_set_info_async(env, tgt->ltd_exp, keylen, | |
2608 | key, sizeof(*info->capa), | |
2609 | info->capa, set); | |
2610 | } else { | |
2611 | /* Only want a specific OSC */ | |
2612 | if (check_uuid && | |
2613 | !obd_uuid_equals(val, &tgt->ltd_uuid)) | |
2614 | continue; | |
2615 | ||
2616 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2617 | keylen, key, vallen, val, set); | |
2618 | } | |
2619 | ||
2620 | if (!rc) | |
2621 | rc = err; | |
2622 | } | |
2623 | ||
2624 | obd_putref(obddev); | |
2625 | if (no_set) { | |
2626 | err = ptlrpc_set_wait(set); | |
2627 | if (!rc) | |
2628 | rc = err; | |
2629 | ptlrpc_set_destroy(set); | |
2630 | } | |
0a3bdb00 | 2631 | return rc; |
d7e09d03 PT |
2632 | } |
2633 | ||
2634 | static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm, | |
2635 | int cmd, __u64 *offset) | |
2636 | { | |
2637 | __u32 ssize = lsm->lsm_stripe_size; | |
2638 | __u64 start; | |
2639 | ||
2640 | start = *offset; | |
2641 | lov_do_div64(start, ssize); | |
2642 | start = start * ssize; | |
2643 | ||
2644 | CDEBUG(D_DLMTRACE, "offset "LPU64", stripe %u, start "LPU64 | |
2645 | ", end "LPU64"\n", *offset, ssize, start, | |
2646 | start + ssize - 1); | |
2647 | if (cmd == OBD_CALC_STRIPE_END) { | |
2648 | *offset = start + ssize - 1; | |
2649 | } else if (cmd == OBD_CALC_STRIPE_START) { | |
2650 | *offset = start; | |
2651 | } else { | |
2652 | LBUG(); | |
2653 | } | |
2654 | ||
0a3bdb00 | 2655 | return 0; |
d7e09d03 PT |
2656 | } |
2657 | ||
2658 | void lov_stripe_lock(struct lov_stripe_md *md) | |
2659 | { | |
2660 | LASSERT(md->lsm_lock_owner != current_pid()); | |
2661 | spin_lock(&md->lsm_lock); | |
2662 | LASSERT(md->lsm_lock_owner == 0); | |
2663 | md->lsm_lock_owner = current_pid(); | |
2664 | } | |
2665 | EXPORT_SYMBOL(lov_stripe_lock); | |
2666 | ||
2667 | void lov_stripe_unlock(struct lov_stripe_md *md) | |
2668 | { | |
2669 | LASSERT(md->lsm_lock_owner == current_pid()); | |
2670 | md->lsm_lock_owner = 0; | |
2671 | spin_unlock(&md->lsm_lock); | |
2672 | } | |
2673 | EXPORT_SYMBOL(lov_stripe_unlock); | |
2674 | ||
2675 | static int lov_quotactl(struct obd_device *obd, struct obd_export *exp, | |
2676 | struct obd_quotactl *oqctl) | |
2677 | { | |
2678 | struct lov_obd *lov = &obd->u.lov; | |
2679 | struct lov_tgt_desc *tgt; | |
2680 | __u64 curspace = 0; | |
2681 | __u64 bhardlimit = 0; | |
2682 | int i, rc = 0; | |
d7e09d03 PT |
2683 | |
2684 | if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON && | |
2685 | oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF && | |
2686 | oqctl->qc_cmd != Q_GETOQUOTA && | |
2687 | oqctl->qc_cmd != Q_INITQUOTA && | |
2688 | oqctl->qc_cmd != LUSTRE_Q_SETQUOTA && | |
2689 | oqctl->qc_cmd != Q_FINVALIDATE) { | |
2690 | CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd); | |
0a3bdb00 | 2691 | return -EFAULT; |
d7e09d03 PT |
2692 | } |
2693 | ||
2694 | /* for lov tgt */ | |
2695 | obd_getref(obd); | |
2696 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
2697 | int err; | |
2698 | ||
2699 | tgt = lov->lov_tgts[i]; | |
2700 | ||
2701 | if (!tgt) | |
2702 | continue; | |
2703 | ||
2704 | if (!tgt->ltd_active || tgt->ltd_reap) { | |
2705 | if (oqctl->qc_cmd == Q_GETOQUOTA && | |
2706 | lov->lov_tgts[i]->ltd_activate) { | |
2707 | rc = -EREMOTEIO; | |
2708 | CERROR("ost %d is inactive\n", i); | |
2709 | } else { | |
2710 | CDEBUG(D_HA, "ost %d is inactive\n", i); | |
2711 | } | |
2712 | continue; | |
2713 | } | |
2714 | ||
2715 | err = obd_quotactl(tgt->ltd_exp, oqctl); | |
2716 | if (err) { | |
2717 | if (tgt->ltd_active && !rc) | |
2718 | rc = err; | |
2719 | continue; | |
2720 | } | |
2721 | ||
2722 | if (oqctl->qc_cmd == Q_GETOQUOTA) { | |
2723 | curspace += oqctl->qc_dqblk.dqb_curspace; | |
2724 | bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit; | |
2725 | } | |
2726 | } | |
2727 | obd_putref(obd); | |
2728 | ||
2729 | if (oqctl->qc_cmd == Q_GETOQUOTA) { | |
2730 | oqctl->qc_dqblk.dqb_curspace = curspace; | |
2731 | oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit; | |
2732 | } | |
0a3bdb00 | 2733 | return rc; |
d7e09d03 PT |
2734 | } |
2735 | ||
2736 | static int lov_quotacheck(struct obd_device *obd, struct obd_export *exp, | |
2737 | struct obd_quotactl *oqctl) | |
2738 | { | |
2739 | struct lov_obd *lov = &obd->u.lov; | |
2740 | int i, rc = 0; | |
d7e09d03 PT |
2741 | |
2742 | obd_getref(obd); | |
2743 | ||
2744 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
2745 | if (!lov->lov_tgts[i]) | |
2746 | continue; | |
2747 | ||
2748 | /* Skip quota check on the administratively disabled OSTs. */ | |
2749 | if (!lov->lov_tgts[i]->ltd_activate) { | |
2750 | CWARN("lov idx %d was administratively disabled, " | |
2751 | "skip quotacheck on it.\n", i); | |
2752 | continue; | |
2753 | } | |
2754 | ||
2755 | if (!lov->lov_tgts[i]->ltd_active) { | |
2756 | CERROR("lov idx %d inactive\n", i); | |
2757 | rc = -EIO; | |
2758 | goto out; | |
2759 | } | |
2760 | } | |
2761 | ||
2762 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
2763 | int err; | |
2764 | ||
2765 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_activate) | |
2766 | continue; | |
2767 | ||
2768 | err = obd_quotacheck(lov->lov_tgts[i]->ltd_exp, oqctl); | |
2769 | if (err && !rc) | |
2770 | rc = err; | |
2771 | } | |
2772 | ||
2773 | out: | |
2774 | obd_putref(obd); | |
2775 | ||
0a3bdb00 | 2776 | return rc; |
d7e09d03 PT |
2777 | } |
2778 | ||
2779 | struct obd_ops lov_obd_ops = { | |
2780 | .o_owner = THIS_MODULE, | |
2781 | .o_setup = lov_setup, | |
2782 | .o_precleanup = lov_precleanup, | |
2783 | .o_cleanup = lov_cleanup, | |
2784 | //.o_process_config = lov_process_config, | |
2785 | .o_connect = lov_connect, | |
2786 | .o_disconnect = lov_disconnect, | |
2787 | .o_statfs = lov_statfs, | |
2788 | .o_statfs_async = lov_statfs_async, | |
2789 | .o_packmd = lov_packmd, | |
2790 | .o_unpackmd = lov_unpackmd, | |
2791 | .o_create = lov_create, | |
2792 | .o_destroy = lov_destroy, | |
2793 | .o_getattr = lov_getattr, | |
2794 | .o_getattr_async = lov_getattr_async, | |
2795 | .o_setattr = lov_setattr, | |
2796 | .o_setattr_async = lov_setattr_async, | |
2797 | .o_brw = lov_brw, | |
2798 | .o_merge_lvb = lov_merge_lvb, | |
2799 | .o_adjust_kms = lov_adjust_kms, | |
2800 | .o_punch = lov_punch, | |
2801 | .o_sync = lov_sync, | |
2802 | .o_enqueue = lov_enqueue, | |
2803 | .o_change_cbdata = lov_change_cbdata, | |
2804 | .o_find_cbdata = lov_find_cbdata, | |
2805 | .o_cancel = lov_cancel, | |
2806 | .o_cancel_unused = lov_cancel_unused, | |
2807 | .o_iocontrol = lov_iocontrol, | |
2808 | .o_get_info = lov_get_info, | |
2809 | .o_set_info_async = lov_set_info_async, | |
2810 | .o_extent_calc = lov_extent_calc, | |
2811 | .o_llog_init = lov_llog_init, | |
2812 | .o_llog_finish = lov_llog_finish, | |
2813 | .o_notify = lov_notify, | |
2814 | .o_pool_new = lov_pool_new, | |
2815 | .o_pool_rem = lov_pool_remove, | |
2816 | .o_pool_add = lov_pool_add, | |
2817 | .o_pool_del = lov_pool_del, | |
2818 | .o_getref = lov_getref, | |
2819 | .o_putref = lov_putref, | |
2820 | .o_quotactl = lov_quotactl, | |
2821 | .o_quotacheck = lov_quotacheck, | |
2822 | }; | |
2823 | ||
2824 | struct kmem_cache *lov_oinfo_slab; | |
2825 | ||
2826 | extern struct lu_kmem_descr lov_caches[]; | |
2827 | ||
2828 | int __init lov_init(void) | |
2829 | { | |
2830 | struct lprocfs_static_vars lvars = { 0 }; | |
2831 | int rc; | |
d7e09d03 PT |
2832 | |
2833 | /* print an address of _any_ initialized kernel symbol from this | |
2834 | * module, to allow debugging with gdb that doesn't support data | |
2835 | * symbols from modules.*/ | |
2836 | CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches); | |
2837 | ||
2838 | rc = lu_kmem_init(lov_caches); | |
2839 | if (rc) | |
2840 | return rc; | |
2841 | ||
2842 | lov_oinfo_slab = kmem_cache_create("lov_oinfo", | |
2843 | sizeof(struct lov_oinfo), | |
2844 | 0, SLAB_HWCACHE_ALIGN, NULL); | |
2845 | if (lov_oinfo_slab == NULL) { | |
2846 | lu_kmem_fini(lov_caches); | |
2847 | return -ENOMEM; | |
2848 | } | |
2849 | lprocfs_lov_init_vars(&lvars); | |
2850 | ||
2851 | rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars, | |
2852 | LUSTRE_LOV_NAME, &lov_device_type); | |
2853 | ||
2854 | if (rc) { | |
2855 | kmem_cache_destroy(lov_oinfo_slab); | |
2856 | lu_kmem_fini(lov_caches); | |
2857 | } | |
2858 | ||
0a3bdb00 | 2859 | return rc; |
d7e09d03 PT |
2860 | } |
2861 | ||
2862 | static void /*__exit*/ lov_exit(void) | |
2863 | { | |
2864 | class_unregister_type(LUSTRE_LOV_NAME); | |
2865 | kmem_cache_destroy(lov_oinfo_slab); | |
2866 | ||
2867 | lu_kmem_fini(lov_caches); | |
2868 | } | |
2869 | ||
2870 | MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); | |
2871 | MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver"); | |
2872 | MODULE_LICENSE("GPL"); | |
2873 | ||
2874 | cfs_module(lov, LUSTRE_VERSION_STRING, lov_init, lov_exit); |