Commit | Line | Data |
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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 | |
9fdaf8c0 | 45 | #include "../../include/linux/libcfs/libcfs.h" |
d7e09d03 | 46 | |
0cf0f7a7 GKH |
47 | #include "../include/obd_support.h" |
48 | #include "../include/lustre_lib.h" | |
49 | #include "../include/lustre_net.h" | |
50 | #include "../include/lustre/lustre_idl.h" | |
51 | #include "../include/lustre_dlm.h" | |
52 | #include "../include/lustre_mds.h" | |
53 | #include "../include/obd_class.h" | |
0cf0f7a7 GKH |
54 | #include "../include/lprocfs_status.h" |
55 | #include "../include/lustre_param.h" | |
56 | #include "../include/cl_object.h" | |
57 | #include "../include/lclient.h" /* for cl_client_lru */ | |
58 | #include "../include/lustre/ll_fiemap.h" | |
59 | #include "../include/lustre_fid.h" | |
d7e09d03 PT |
60 | |
61 | #include "lov_internal.h" | |
62 | ||
63 | /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion. | |
64 | Any function that expects lov_tgts to remain stationary must take a ref. */ | |
65 | static void lov_getref(struct obd_device *obd) | |
66 | { | |
67 | struct lov_obd *lov = &obd->u.lov; | |
68 | ||
69 | /* nobody gets through here until lov_putref is done */ | |
70 | mutex_lock(&lov->lov_lock); | |
71 | atomic_inc(&lov->lov_refcount); | |
72 | mutex_unlock(&lov->lov_lock); | |
73 | return; | |
74 | } | |
75 | ||
76 | static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt); | |
77 | ||
78 | static void lov_putref(struct obd_device *obd) | |
79 | { | |
80 | struct lov_obd *lov = &obd->u.lov; | |
81 | ||
82 | mutex_lock(&lov->lov_lock); | |
83 | /* ok to dec to 0 more than once -- ltd_exp's will be null */ | |
84 | if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) { | |
85 | LIST_HEAD(kill); | |
86 | int i; | |
87 | struct lov_tgt_desc *tgt, *n; | |
88 | CDEBUG(D_CONFIG, "destroying %d lov targets\n", | |
89 | lov->lov_death_row); | |
90 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
91 | tgt = lov->lov_tgts[i]; | |
92 | ||
93 | if (!tgt || !tgt->ltd_reap) | |
94 | continue; | |
95 | list_add(&tgt->ltd_kill, &kill); | |
96 | /* XXX - right now there is a dependency on ld_tgt_count | |
97 | * being the maximum tgt index for computing the | |
98 | * mds_max_easize. So we can't shrink it. */ | |
99 | lov_ost_pool_remove(&lov->lov_packed, i); | |
100 | lov->lov_tgts[i] = NULL; | |
101 | lov->lov_death_row--; | |
102 | } | |
103 | mutex_unlock(&lov->lov_lock); | |
104 | ||
105 | list_for_each_entry_safe(tgt, n, &kill, ltd_kill) { | |
106 | list_del(&tgt->ltd_kill); | |
107 | /* Disconnect */ | |
108 | __lov_del_obd(obd, tgt); | |
109 | } | |
3c150f00 OD |
110 | |
111 | if (lov->lov_tgts_kobj) | |
112 | kobject_put(lov->lov_tgts_kobj); | |
113 | ||
d7e09d03 PT |
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; | |
d7e09d03 | 134 | int rc; |
d7e09d03 PT |
135 | |
136 | if (!lov->lov_tgts[index]) | |
0a3bdb00 | 137 | return -EINVAL; |
d7e09d03 PT |
138 | |
139 | tgt_uuid = &lov->lov_tgts[index]->ltd_uuid; | |
140 | tgt_obd = lov->lov_tgts[index]->ltd_obd; | |
141 | ||
142 | if (!tgt_obd->obd_set_up) { | |
143 | CERROR("Target %s not set up\n", obd_uuid2str(tgt_uuid)); | |
0a3bdb00 | 144 | return -EINVAL; |
d7e09d03 PT |
145 | } |
146 | ||
147 | /* override the sp_me from lov */ | |
148 | tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me; | |
149 | ||
150 | if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX)) | |
151 | data->ocd_index = index; | |
152 | ||
153 | /* | |
154 | * Divine LOV knows that OBDs under it are OSCs. | |
155 | */ | |
156 | imp = tgt_obd->u.cli.cl_import; | |
157 | ||
158 | if (activate) { | |
159 | tgt_obd->obd_no_recov = 0; | |
160 | /* FIXME this is probably supposed to be | |
161 | ptlrpc_set_import_active. Horrible naming. */ | |
162 | ptlrpc_activate_import(imp); | |
163 | } | |
164 | ||
165 | rc = obd_register_observer(tgt_obd, obd); | |
166 | if (rc) { | |
167 | CERROR("Target %s register_observer error %d\n", | |
168 | obd_uuid2str(tgt_uuid), rc); | |
0a3bdb00 | 169 | return rc; |
d7e09d03 PT |
170 | } |
171 | ||
172 | ||
173 | if (imp->imp_invalid) { | |
2d00bd17 JP |
174 | CDEBUG(D_CONFIG, "not connecting OSC %s; administratively disabled\n", |
175 | obd_uuid2str(tgt_uuid)); | |
0a3bdb00 | 176 | return 0; |
d7e09d03 PT |
177 | } |
178 | ||
179 | rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd, | |
180 | &lov_osc_uuid, data, NULL); | |
181 | if (rc || !lov->lov_tgts[index]->ltd_exp) { | |
182 | CERROR("Target %s connect error %d\n", | |
183 | obd_uuid2str(tgt_uuid), rc); | |
0a3bdb00 | 184 | return -ENODEV; |
d7e09d03 PT |
185 | } |
186 | ||
187 | lov->lov_tgts[index]->ltd_reap = 0; | |
188 | ||
189 | CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index, | |
190 | obd_uuid2str(tgt_uuid), tgt_obd->obd_name, activate ? "":"in"); | |
191 | ||
cb1debff OD |
192 | if (lov->lov_tgts_kobj) |
193 | /* Even if we failed, that's ok */ | |
194 | rc = sysfs_create_link(lov->lov_tgts_kobj, &tgt_obd->obd_kobj, | |
195 | tgt_obd->obd_name); | |
d7e09d03 | 196 | |
0a3bdb00 | 197 | return 0; |
d7e09d03 PT |
198 | } |
199 | ||
200 | static int lov_connect(const struct lu_env *env, | |
201 | struct obd_export **exp, struct obd_device *obd, | |
202 | struct obd_uuid *cluuid, struct obd_connect_data *data, | |
203 | void *localdata) | |
204 | { | |
205 | struct lov_obd *lov = &obd->u.lov; | |
206 | struct lov_tgt_desc *tgt; | |
207 | struct lustre_handle conn; | |
208 | int i, rc; | |
d7e09d03 PT |
209 | |
210 | CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects); | |
211 | ||
212 | rc = class_connect(&conn, obd, cluuid); | |
213 | if (rc) | |
0a3bdb00 | 214 | return rc; |
d7e09d03 PT |
215 | |
216 | *exp = class_conn2export(&conn); | |
217 | ||
218 | /* Why should there ever be more than 1 connect? */ | |
219 | lov->lov_connects++; | |
220 | LASSERT(lov->lov_connects == 1); | |
221 | ||
222 | memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd)); | |
223 | if (data) | |
224 | lov->lov_ocd = *data; | |
225 | ||
226 | obd_getref(obd); | |
cb1debff OD |
227 | |
228 | lov->lov_tgts_kobj = kobject_create_and_add("target_obds", | |
229 | &obd->obd_kobj); | |
230 | ||
d7e09d03 PT |
231 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
232 | tgt = lov->lov_tgts[i]; | |
233 | if (!tgt || obd_uuid_empty(&tgt->ltd_uuid)) | |
234 | continue; | |
235 | /* Flags will be lowest common denominator */ | |
236 | rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd); | |
237 | if (rc) { | |
238 | CERROR("%s: lov connect tgt %d failed: %d\n", | |
239 | obd->obd_name, i, rc); | |
240 | continue; | |
241 | } | |
242 | /* connect to administrative disabled ost */ | |
243 | if (!lov->lov_tgts[i]->ltd_exp) | |
244 | continue; | |
245 | ||
246 | rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd, | |
247 | OBD_NOTIFY_CONNECT, (void *)&i); | |
248 | if (rc) { | |
249 | CERROR("%s error sending notify %d\n", | |
250 | obd->obd_name, rc); | |
251 | } | |
252 | } | |
253 | obd_putref(obd); | |
254 | ||
0a3bdb00 | 255 | return 0; |
d7e09d03 PT |
256 | } |
257 | ||
258 | static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) | |
259 | { | |
d7e09d03 PT |
260 | struct lov_obd *lov = &obd->u.lov; |
261 | struct obd_device *osc_obd; | |
262 | int rc; | |
d7e09d03 PT |
263 | |
264 | osc_obd = class_exp2obd(tgt->ltd_exp); | |
265 | CDEBUG(D_CONFIG, "%s: disconnecting target %s\n", | |
3456a40e | 266 | obd->obd_name, osc_obd ? osc_obd->obd_name : "NULL"); |
d7e09d03 PT |
267 | |
268 | if (tgt->ltd_active) { | |
269 | tgt->ltd_active = 0; | |
270 | lov->desc.ld_active_tgt_count--; | |
271 | tgt->ltd_exp->exp_obd->obd_inactive = 1; | |
272 | } | |
273 | ||
d7e09d03 | 274 | if (osc_obd) { |
cb1debff OD |
275 | if (lov->lov_tgts_kobj) |
276 | sysfs_remove_link(lov->lov_tgts_kobj, | |
277 | osc_obd->obd_name); | |
278 | ||
d7e09d03 PT |
279 | /* Pass it on to our clients. |
280 | * XXX This should be an argument to disconnect, | |
281 | * XXX not a back-door flag on the OBD. Ah well. | |
282 | */ | |
283 | osc_obd->obd_force = obd->obd_force; | |
284 | osc_obd->obd_fail = obd->obd_fail; | |
285 | osc_obd->obd_no_recov = obd->obd_no_recov; | |
286 | } | |
287 | ||
288 | obd_register_observer(osc_obd, NULL); | |
289 | ||
290 | rc = obd_disconnect(tgt->ltd_exp); | |
291 | if (rc) { | |
292 | CERROR("Target %s disconnect error %d\n", | |
293 | tgt->ltd_uuid.uuid, rc); | |
294 | rc = 0; | |
295 | } | |
296 | ||
297 | tgt->ltd_exp = NULL; | |
0a3bdb00 | 298 | return 0; |
d7e09d03 PT |
299 | } |
300 | ||
301 | static int lov_disconnect(struct obd_export *exp) | |
302 | { | |
303 | struct obd_device *obd = class_exp2obd(exp); | |
304 | struct lov_obd *lov = &obd->u.lov; | |
305 | int i, rc; | |
d7e09d03 PT |
306 | |
307 | if (!lov->lov_tgts) | |
308 | goto out; | |
309 | ||
310 | /* Only disconnect the underlying layers on the final disconnect. */ | |
311 | lov->lov_connects--; | |
312 | if (lov->lov_connects != 0) { | |
313 | /* why should there be more than 1 connect? */ | |
314 | CERROR("disconnect #%d\n", lov->lov_connects); | |
315 | goto out; | |
316 | } | |
317 | ||
318 | /* Let's hold another reference so lov_del_obd doesn't spin through | |
319 | putref every time */ | |
320 | obd_getref(obd); | |
321 | ||
322 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
323 | if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) { | |
324 | /* Disconnection is the last we know about an obd */ | |
2046a81d | 325 | lov_del_target(obd, i, NULL, lov->lov_tgts[i]->ltd_gen); |
d7e09d03 PT |
326 | } |
327 | } | |
cb1debff | 328 | |
d7e09d03 PT |
329 | obd_putref(obd); |
330 | ||
331 | out: | |
332 | rc = class_disconnect(exp); /* bz 9811 */ | |
0a3bdb00 | 333 | return rc; |
d7e09d03 PT |
334 | } |
335 | ||
336 | /* Error codes: | |
337 | * | |
338 | * -EINVAL : UUID can't be found in the LOV's target list | |
339 | * -ENOTCONN: The UUID is found, but the target connection is bad (!) | |
340 | * -EBADF : The UUID is found, but the OBD is the wrong type (!) | |
341 | * any >= 0 : is log target index | |
342 | */ | |
343 | static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, | |
344 | enum obd_notify_event ev) | |
345 | { | |
346 | struct lov_obd *lov = &obd->u.lov; | |
347 | struct lov_tgt_desc *tgt; | |
348 | int index, activate, active; | |
d7e09d03 PT |
349 | |
350 | CDEBUG(D_INFO, "Searching in lov %p for uuid %s event(%d)\n", | |
351 | lov, uuid->uuid, ev); | |
352 | ||
353 | obd_getref(obd); | |
354 | for (index = 0; index < lov->desc.ld_tgt_count; index++) { | |
355 | tgt = lov->lov_tgts[index]; | |
356 | if (!tgt) | |
357 | continue; | |
358 | /* | |
359 | * LU-642, initially inactive OSC could miss the obd_connect, | |
360 | * we make up for it here. | |
361 | */ | |
362 | if (ev == OBD_NOTIFY_ACTIVATE && tgt->ltd_exp == NULL && | |
363 | obd_uuid_equals(uuid, &tgt->ltd_uuid)) { | |
364 | struct obd_uuid lov_osc_uuid = {"LOV_OSC_UUID"}; | |
365 | ||
366 | obd_connect(NULL, &tgt->ltd_exp, tgt->ltd_obd, | |
367 | &lov_osc_uuid, &lov->lov_ocd, NULL); | |
368 | } | |
369 | if (!tgt->ltd_exp) | |
370 | continue; | |
371 | ||
55f5a824 | 372 | CDEBUG(D_INFO, "lov idx %d is %s conn %#llx\n", |
d7e09d03 PT |
373 | index, obd_uuid2str(&tgt->ltd_uuid), |
374 | tgt->ltd_exp->exp_handle.h_cookie); | |
375 | if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) | |
376 | break; | |
377 | } | |
378 | ||
18751668 JL |
379 | if (index == lov->desc.ld_tgt_count) { |
380 | index = -EINVAL; | |
381 | goto out; | |
382 | } | |
d7e09d03 PT |
383 | |
384 | if (ev == OBD_NOTIFY_DEACTIVATE || ev == OBD_NOTIFY_ACTIVATE) { | |
385 | activate = (ev == OBD_NOTIFY_ACTIVATE) ? 1 : 0; | |
386 | ||
387 | if (lov->lov_tgts[index]->ltd_activate == activate) { | |
388 | CDEBUG(D_INFO, "OSC %s already %sactivate!\n", | |
389 | uuid->uuid, activate ? "" : "de"); | |
390 | } else { | |
391 | lov->lov_tgts[index]->ltd_activate = activate; | |
392 | CDEBUG(D_CONFIG, "%sactivate OSC %s\n", | |
393 | activate ? "" : "de", obd_uuid2str(uuid)); | |
394 | } | |
395 | ||
396 | } else if (ev == OBD_NOTIFY_INACTIVE || ev == OBD_NOTIFY_ACTIVE) { | |
397 | active = (ev == OBD_NOTIFY_ACTIVE) ? 1 : 0; | |
398 | ||
399 | if (lov->lov_tgts[index]->ltd_active == active) { | |
400 | CDEBUG(D_INFO, "OSC %s already %sactive!\n", | |
401 | uuid->uuid, active ? "" : "in"); | |
18751668 | 402 | goto out; |
d7e09d03 PT |
403 | } else { |
404 | CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", | |
405 | obd_uuid2str(uuid), active ? "" : "in"); | |
406 | } | |
407 | ||
408 | lov->lov_tgts[index]->ltd_active = active; | |
409 | if (active) { | |
410 | lov->desc.ld_active_tgt_count++; | |
411 | lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0; | |
412 | } else { | |
413 | lov->desc.ld_active_tgt_count--; | |
414 | lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1; | |
415 | } | |
416 | } else { | |
417 | CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid); | |
418 | } | |
419 | ||
420 | out: | |
421 | obd_putref(obd); | |
0a3bdb00 | 422 | return index; |
d7e09d03 PT |
423 | } |
424 | ||
425 | static int lov_notify(struct obd_device *obd, struct obd_device *watched, | |
426 | enum obd_notify_event ev, void *data) | |
427 | { | |
428 | int rc = 0; | |
429 | struct lov_obd *lov = &obd->u.lov; | |
d7e09d03 PT |
430 | |
431 | down_read(&lov->lov_notify_lock); | |
432 | if (!lov->lov_connects) { | |
433 | up_read(&lov->lov_notify_lock); | |
0a3bdb00 | 434 | return rc; |
d7e09d03 PT |
435 | } |
436 | ||
437 | if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE || | |
438 | ev == OBD_NOTIFY_ACTIVATE || ev == OBD_NOTIFY_DEACTIVATE) { | |
439 | struct obd_uuid *uuid; | |
440 | ||
441 | LASSERT(watched); | |
442 | ||
443 | if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) { | |
444 | up_read(&lov->lov_notify_lock); | |
445 | CERROR("unexpected notification of %s %s!\n", | |
446 | watched->obd_type->typ_name, | |
447 | watched->obd_name); | |
0a3bdb00 | 448 | return -EINVAL; |
d7e09d03 PT |
449 | } |
450 | uuid = &watched->u.cli.cl_target_uuid; | |
451 | ||
452 | /* Set OSC as active before notifying the observer, so the | |
453 | * observer can use the OSC normally. | |
454 | */ | |
455 | rc = lov_set_osc_active(obd, uuid, ev); | |
456 | if (rc < 0) { | |
457 | up_read(&lov->lov_notify_lock); | |
458 | CERROR("event(%d) of %s failed: %d\n", ev, | |
459 | obd_uuid2str(uuid), rc); | |
0a3bdb00 | 460 | return rc; |
d7e09d03 PT |
461 | } |
462 | /* active event should be pass lov target index as data */ | |
463 | data = &rc; | |
464 | } | |
465 | ||
466 | /* Pass the notification up the chain. */ | |
467 | if (watched) { | |
468 | rc = obd_notify_observer(obd, watched, ev, data); | |
469 | } else { | |
470 | /* NULL watched means all osc's in the lov (only for syncs) */ | |
471 | /* sync event should be send lov idx as data */ | |
472 | struct lov_obd *lov = &obd->u.lov; | |
473 | int i, is_sync; | |
474 | ||
475 | data = &i; | |
476 | is_sync = (ev == OBD_NOTIFY_SYNC) || | |
477 | (ev == OBD_NOTIFY_SYNC_NONBLOCK); | |
478 | ||
479 | obd_getref(obd); | |
480 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
481 | if (!lov->lov_tgts[i]) | |
482 | continue; | |
483 | ||
484 | /* don't send sync event if target not | |
485 | * connected/activated */ | |
486 | if (is_sync && !lov->lov_tgts[i]->ltd_active) | |
487 | continue; | |
488 | ||
489 | rc = obd_notify_observer(obd, lov->lov_tgts[i]->ltd_obd, | |
490 | ev, data); | |
491 | if (rc) { | |
492 | CERROR("%s: notify %s of %s failed %d\n", | |
493 | obd->obd_name, | |
494 | obd->obd_observer->obd_name, | |
495 | lov->lov_tgts[i]->ltd_obd->obd_name, | |
496 | rc); | |
497 | } | |
498 | } | |
499 | obd_putref(obd); | |
500 | } | |
501 | ||
502 | up_read(&lov->lov_notify_lock); | |
0a3bdb00 | 503 | return rc; |
d7e09d03 PT |
504 | } |
505 | ||
506 | static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp, | |
507 | __u32 index, int gen, int active) | |
508 | { | |
509 | struct lov_obd *lov = &obd->u.lov; | |
510 | struct lov_tgt_desc *tgt; | |
511 | struct obd_device *tgt_obd; | |
512 | int rc; | |
d7e09d03 PT |
513 | |
514 | CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n", | |
515 | uuidp->uuid, index, gen, active); | |
516 | ||
517 | if (gen <= 0) { | |
518 | CERROR("request to add OBD %s with invalid generation: %d\n", | |
519 | uuidp->uuid, gen); | |
0a3bdb00 | 520 | return -EINVAL; |
d7e09d03 PT |
521 | } |
522 | ||
523 | tgt_obd = class_find_client_obd(uuidp, LUSTRE_OSC_NAME, | |
524 | &obd->obd_uuid); | |
525 | if (tgt_obd == NULL) | |
0a3bdb00 | 526 | return -EINVAL; |
d7e09d03 PT |
527 | |
528 | mutex_lock(&lov->lov_lock); | |
529 | ||
530 | if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) { | |
531 | tgt = lov->lov_tgts[index]; | |
532 | CERROR("UUID %s already assigned at LOV target index %d\n", | |
533 | obd_uuid2str(&tgt->ltd_uuid), index); | |
534 | mutex_unlock(&lov->lov_lock); | |
0a3bdb00 | 535 | return -EEXIST; |
d7e09d03 PT |
536 | } |
537 | ||
538 | if (index >= lov->lov_tgt_size) { | |
539 | /* We need to reallocate the lov target array. */ | |
540 | struct lov_tgt_desc **newtgts, **old = NULL; | |
541 | __u32 newsize, oldsize = 0; | |
542 | ||
2c0514ee | 543 | newsize = max_t(__u32, lov->lov_tgt_size, 2); |
d7e09d03 | 544 | while (newsize < index + 1) |
09c99f8f | 545 | newsize <<= 1; |
840c94d5 | 546 | newtgts = kcalloc(newsize, sizeof(*newtgts), GFP_NOFS); |
d7e09d03 PT |
547 | if (newtgts == NULL) { |
548 | mutex_unlock(&lov->lov_lock); | |
0a3bdb00 | 549 | return -ENOMEM; |
d7e09d03 PT |
550 | } |
551 | ||
552 | if (lov->lov_tgt_size) { | |
553 | memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) * | |
554 | lov->lov_tgt_size); | |
555 | old = lov->lov_tgts; | |
556 | oldsize = lov->lov_tgt_size; | |
557 | } | |
558 | ||
559 | lov->lov_tgts = newtgts; | |
560 | lov->lov_tgt_size = newsize; | |
561 | smp_rmb(); | |
c93f5463 | 562 | kfree(old); |
d7e09d03 PT |
563 | |
564 | CDEBUG(D_CONFIG, "tgts: %p size: %d\n", | |
565 | lov->lov_tgts, lov->lov_tgt_size); | |
566 | } | |
567 | ||
840c94d5 | 568 | tgt = kzalloc(sizeof(*tgt), GFP_NOFS); |
d7e09d03 PT |
569 | if (!tgt) { |
570 | mutex_unlock(&lov->lov_lock); | |
0a3bdb00 | 571 | return -ENOMEM; |
d7e09d03 PT |
572 | } |
573 | ||
574 | rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size); | |
575 | if (rc) { | |
576 | mutex_unlock(&lov->lov_lock); | |
840c94d5 | 577 | kfree(tgt); |
0a3bdb00 | 578 | return rc; |
d7e09d03 PT |
579 | } |
580 | ||
581 | tgt->ltd_uuid = *uuidp; | |
582 | tgt->ltd_obd = tgt_obd; | |
583 | /* XXX - add a sanity check on the generation number. */ | |
584 | tgt->ltd_gen = gen; | |
585 | tgt->ltd_index = index; | |
586 | tgt->ltd_activate = active; | |
587 | lov->lov_tgts[index] = tgt; | |
588 | if (index >= lov->desc.ld_tgt_count) | |
589 | lov->desc.ld_tgt_count = index + 1; | |
590 | ||
591 | mutex_unlock(&lov->lov_lock); | |
592 | ||
593 | CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n", | |
594 | index, tgt->ltd_gen, lov->desc.ld_tgt_count); | |
595 | ||
596 | rc = obd_notify(obd, tgt_obd, OBD_NOTIFY_CREATE, &index); | |
597 | ||
598 | if (lov->lov_connects == 0) { | |
599 | /* lov_connect hasn't been called yet. We'll do the | |
600 | lov_connect_obd on this target when that fn first runs, | |
601 | because we don't know the connect flags yet. */ | |
0a3bdb00 | 602 | return 0; |
d7e09d03 PT |
603 | } |
604 | ||
605 | obd_getref(obd); | |
606 | ||
607 | rc = lov_connect_obd(obd, index, active, &lov->lov_ocd); | |
608 | if (rc) | |
18751668 | 609 | goto out; |
d7e09d03 PT |
610 | |
611 | /* connect to administrative disabled ost */ | |
18751668 JL |
612 | if (!tgt->ltd_exp) { |
613 | rc = 0; | |
614 | goto out; | |
615 | } | |
d7e09d03 PT |
616 | |
617 | if (lov->lov_cache != NULL) { | |
618 | rc = obd_set_info_async(NULL, tgt->ltd_exp, | |
619 | sizeof(KEY_CACHE_SET), KEY_CACHE_SET, | |
620 | sizeof(struct cl_client_cache), lov->lov_cache, | |
621 | NULL); | |
622 | if (rc < 0) | |
18751668 | 623 | goto out; |
d7e09d03 PT |
624 | } |
625 | ||
626 | rc = lov_notify(obd, tgt->ltd_exp->exp_obd, | |
627 | active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE, | |
628 | (void *)&index); | |
629 | ||
630 | out: | |
631 | if (rc) { | |
632 | CERROR("add failed (%d), deleting %s\n", rc, | |
633 | obd_uuid2str(&tgt->ltd_uuid)); | |
2046a81d | 634 | lov_del_target(obd, index, NULL, 0); |
d7e09d03 PT |
635 | } |
636 | obd_putref(obd); | |
0a3bdb00 | 637 | return rc; |
d7e09d03 PT |
638 | } |
639 | ||
640 | /* Schedule a target for deletion */ | |
641 | int lov_del_target(struct obd_device *obd, __u32 index, | |
642 | struct obd_uuid *uuidp, int gen) | |
643 | { | |
644 | struct lov_obd *lov = &obd->u.lov; | |
645 | int count = lov->desc.ld_tgt_count; | |
646 | int rc = 0; | |
d7e09d03 PT |
647 | |
648 | if (index >= count) { | |
649 | CERROR("LOV target index %d >= number of LOV OBDs %d.\n", | |
650 | index, count); | |
0a3bdb00 | 651 | return -EINVAL; |
d7e09d03 PT |
652 | } |
653 | ||
654 | /* to make sure there's no ongoing lov_notify() now */ | |
655 | down_write(&lov->lov_notify_lock); | |
656 | obd_getref(obd); | |
657 | ||
658 | if (!lov->lov_tgts[index]) { | |
659 | CERROR("LOV target at index %d is not setup.\n", index); | |
18751668 JL |
660 | rc = -EINVAL; |
661 | goto out; | |
d7e09d03 PT |
662 | } |
663 | ||
664 | if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) { | |
665 | CERROR("LOV target UUID %s at index %d doesn't match %s.\n", | |
666 | lov_uuid2str(lov, index), index, | |
667 | obd_uuid2str(uuidp)); | |
18751668 JL |
668 | rc = -EINVAL; |
669 | goto out; | |
d7e09d03 PT |
670 | } |
671 | ||
672 | CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n", | |
673 | lov_uuid2str(lov, index), index, | |
674 | lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp, | |
675 | lov->lov_tgts[index]->ltd_active); | |
676 | ||
677 | lov->lov_tgts[index]->ltd_reap = 1; | |
678 | lov->lov_death_row++; | |
679 | /* we really delete it from obd_putref */ | |
680 | out: | |
681 | obd_putref(obd); | |
682 | up_write(&lov->lov_notify_lock); | |
683 | ||
0a3bdb00 | 684 | return rc; |
d7e09d03 PT |
685 | } |
686 | ||
687 | static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) | |
688 | { | |
689 | struct obd_device *osc_obd; | |
690 | ||
691 | LASSERT(tgt); | |
692 | LASSERT(tgt->ltd_reap); | |
693 | ||
694 | osc_obd = class_exp2obd(tgt->ltd_exp); | |
695 | ||
696 | CDEBUG(D_CONFIG, "Removing tgt %s : %s\n", | |
697 | tgt->ltd_uuid.uuid, | |
698 | osc_obd ? osc_obd->obd_name : "<no obd>"); | |
699 | ||
700 | if (tgt->ltd_exp) | |
701 | lov_disconnect_obd(obd, tgt); | |
702 | ||
840c94d5 | 703 | kfree(tgt); |
d7e09d03 PT |
704 | |
705 | /* Manual cleanup - no cleanup logs to clean up the osc's. We must | |
706 | do it ourselves. And we can't do it from lov_cleanup, | |
707 | because we just lost our only reference to it. */ | |
708 | if (osc_obd) | |
709 | class_manual_cleanup(osc_obd); | |
710 | } | |
711 | ||
712 | void lov_fix_desc_stripe_size(__u64 *val) | |
713 | { | |
50dc198a AD |
714 | if (*val < LOV_MIN_STRIPE_SIZE) { |
715 | if (*val != 0) | |
2d00bd17 | 716 | LCONSOLE_INFO("Increasing default stripe size to minimum %u\n", |
081b7265 JH |
717 | LOV_DESC_STRIPE_SIZE_DEFAULT); |
718 | *val = LOV_DESC_STRIPE_SIZE_DEFAULT; | |
d7e09d03 PT |
719 | } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) { |
720 | *val &= ~(LOV_MIN_STRIPE_SIZE - 1); | |
b0f5aad5 | 721 | LCONSOLE_WARN("Changing default stripe size to %llu (a multiple of %u)\n", |
d7e09d03 PT |
722 | *val, LOV_MIN_STRIPE_SIZE); |
723 | } | |
724 | } | |
725 | ||
726 | void lov_fix_desc_stripe_count(__u32 *val) | |
727 | { | |
728 | if (*val == 0) | |
729 | *val = 1; | |
730 | } | |
731 | ||
732 | void lov_fix_desc_pattern(__u32 *val) | |
733 | { | |
734 | /* from lov_setstripe */ | |
735 | if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) { | |
736 | LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val); | |
737 | *val = 0; | |
738 | } | |
739 | } | |
740 | ||
741 | void lov_fix_desc_qos_maxage(__u32 *val) | |
742 | { | |
d7e09d03 | 743 | if (*val == 0) |
081b7265 | 744 | *val = LOV_DESC_QOS_MAXAGE_DEFAULT; |
d7e09d03 PT |
745 | } |
746 | ||
747 | void lov_fix_desc(struct lov_desc *desc) | |
748 | { | |
749 | lov_fix_desc_stripe_size(&desc->ld_default_stripe_size); | |
750 | lov_fix_desc_stripe_count(&desc->ld_default_stripe_count); | |
751 | lov_fix_desc_pattern(&desc->ld_pattern); | |
752 | lov_fix_desc_qos_maxage(&desc->ld_qos_maxage); | |
753 | } | |
754 | ||
755 | int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg) | |
756 | { | |
2046a81d | 757 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 PT |
758 | struct lov_desc *desc; |
759 | struct lov_obd *lov = &obd->u.lov; | |
760 | int rc; | |
d7e09d03 PT |
761 | |
762 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { | |
763 | CERROR("LOV setup requires a descriptor\n"); | |
0a3bdb00 | 764 | return -EINVAL; |
d7e09d03 PT |
765 | } |
766 | ||
767 | desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1); | |
768 | ||
769 | if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { | |
770 | CERROR("descriptor size wrong: %d > %d\n", | |
771 | (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); | |
0a3bdb00 | 772 | return -EINVAL; |
d7e09d03 PT |
773 | } |
774 | ||
775 | if (desc->ld_magic != LOV_DESC_MAGIC) { | |
776 | if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) { | |
777 | CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n", | |
778 | obd->obd_name, desc); | |
779 | lustre_swab_lov_desc(desc); | |
780 | } else { | |
781 | CERROR("%s: Bad lov desc magic: %#x\n", | |
782 | obd->obd_name, desc->ld_magic); | |
0a3bdb00 | 783 | return -EINVAL; |
d7e09d03 PT |
784 | } |
785 | } | |
786 | ||
787 | lov_fix_desc(desc); | |
788 | ||
789 | desc->ld_active_tgt_count = 0; | |
790 | lov->desc = *desc; | |
791 | lov->lov_tgt_size = 0; | |
792 | ||
793 | mutex_init(&lov->lov_lock); | |
794 | atomic_set(&lov->lov_refcount, 0); | |
795 | lov->lov_sp_me = LUSTRE_SP_CLI; | |
796 | ||
797 | init_rwsem(&lov->lov_notify_lock); | |
798 | ||
799 | lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS, | |
800 | HASH_POOLS_MAX_BITS, | |
801 | HASH_POOLS_BKT_BITS, 0, | |
802 | CFS_HASH_MIN_THETA, | |
803 | CFS_HASH_MAX_THETA, | |
804 | &pool_hash_operations, | |
805 | CFS_HASH_DEFAULT); | |
806 | INIT_LIST_HEAD(&lov->lov_pool_list); | |
807 | lov->lov_pool_count = 0; | |
808 | rc = lov_ost_pool_init(&lov->lov_packed, 0); | |
809 | if (rc) | |
18751668 | 810 | goto out; |
d7e09d03 PT |
811 | |
812 | lprocfs_lov_init_vars(&lvars); | |
9b801302 | 813 | lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars); |
d7e09d03 | 814 | |
61e87ab0 DE |
815 | rc = ldebugfs_seq_create(obd->obd_debugfs_entry, "target_obd", |
816 | 0444, &lov_proc_target_fops, obd); | |
817 | if (rc) | |
818 | CWARN("Error adding the target_obd file\n"); | |
d7e09d03 | 819 | |
61e87ab0 DE |
820 | lov->lov_pool_debugfs_entry = ldebugfs_register("pools", |
821 | obd->obd_debugfs_entry, | |
822 | NULL, NULL); | |
0a3bdb00 | 823 | return 0; |
d7e09d03 PT |
824 | |
825 | out: | |
826 | return rc; | |
827 | } | |
828 | ||
829 | static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) | |
830 | { | |
d7e09d03 PT |
831 | struct lov_obd *lov = &obd->u.lov; |
832 | ||
d7e09d03 PT |
833 | switch (stage) { |
834 | case OBD_CLEANUP_EARLY: { | |
835 | int i; | |
836 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
837 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) | |
838 | continue; | |
839 | obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp), | |
840 | OBD_CLEANUP_EARLY); | |
841 | } | |
842 | break; | |
843 | } | |
a5d490c2 | 844 | default: |
d7e09d03 PT |
845 | break; |
846 | } | |
a5d490c2 | 847 | |
e588f1bf | 848 | return 0; |
d7e09d03 PT |
849 | } |
850 | ||
851 | static int lov_cleanup(struct obd_device *obd) | |
852 | { | |
853 | struct lov_obd *lov = &obd->u.lov; | |
854 | struct list_head *pos, *tmp; | |
855 | struct pool_desc *pool; | |
d7e09d03 PT |
856 | |
857 | list_for_each_safe(pos, tmp, &lov->lov_pool_list) { | |
858 | pool = list_entry(pos, struct pool_desc, pool_list); | |
859 | /* free pool structs */ | |
860 | CDEBUG(D_INFO, "delete pool %p\n", pool); | |
861 | /* In the function below, .hs_keycmp resolves to | |
862 | * pool_hashkey_keycmp() */ | |
863 | /* coverity[overrun-buffer-val] */ | |
864 | lov_pool_del(obd, pool->pool_name); | |
865 | } | |
866 | cfs_hash_putref(lov->lov_pools_hash_body); | |
867 | lov_ost_pool_free(&lov->lov_packed); | |
868 | ||
869 | lprocfs_obd_cleanup(obd); | |
870 | if (lov->lov_tgts) { | |
871 | int i; | |
872 | obd_getref(obd); | |
873 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
874 | if (!lov->lov_tgts[i]) | |
875 | continue; | |
876 | ||
877 | /* Inactive targets may never have connected */ | |
878 | if (lov->lov_tgts[i]->ltd_active || | |
879 | atomic_read(&lov->lov_refcount)) | |
880 | /* We should never get here - these | |
881 | should have been removed in the | |
882 | disconnect. */ | |
2d00bd17 | 883 | CERROR("lov tgt %d not cleaned! deathrow=%d, lovrc=%d\n", |
d7e09d03 PT |
884 | i, lov->lov_death_row, |
885 | atomic_read(&lov->lov_refcount)); | |
e6be8e63 | 886 | lov_del_target(obd, i, NULL, 0); |
d7e09d03 PT |
887 | } |
888 | obd_putref(obd); | |
840c94d5 | 889 | kfree(lov->lov_tgts); |
d7e09d03 PT |
890 | lov->lov_tgt_size = 0; |
891 | } | |
0a3bdb00 | 892 | return 0; |
d7e09d03 PT |
893 | } |
894 | ||
895 | int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg, | |
896 | __u32 *indexp, int *genp) | |
897 | { | |
898 | struct obd_uuid obd_uuid; | |
899 | int cmd; | |
900 | int rc = 0; | |
d7e09d03 | 901 | |
5f3a68f9 | 902 | switch (cmd = lcfg->lcfg_command) { |
d7e09d03 PT |
903 | case LCFG_LOV_ADD_OBD: |
904 | case LCFG_LOV_ADD_INA: | |
905 | case LCFG_LOV_DEL_OBD: { | |
906 | __u32 index; | |
907 | int gen; | |
908 | /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */ | |
18751668 JL |
909 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) { |
910 | rc = -EINVAL; | |
911 | goto out; | |
912 | } | |
d7e09d03 PT |
913 | |
914 | obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); | |
915 | ||
18751668 JL |
916 | if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", indexp) != 1) { |
917 | rc = -EINVAL; | |
918 | goto out; | |
919 | } | |
920 | if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", genp) != 1) { | |
921 | rc = -EINVAL; | |
922 | goto out; | |
923 | } | |
d7e09d03 PT |
924 | index = *indexp; |
925 | gen = *genp; | |
926 | if (cmd == LCFG_LOV_ADD_OBD) | |
927 | rc = lov_add_target(obd, &obd_uuid, index, gen, 1); | |
928 | else if (cmd == LCFG_LOV_ADD_INA) | |
929 | rc = lov_add_target(obd, &obd_uuid, index, gen, 0); | |
930 | else | |
931 | rc = lov_del_target(obd, index, &obd_uuid, gen); | |
18751668 | 932 | goto out; |
d7e09d03 PT |
933 | } |
934 | case LCFG_PARAM: { | |
e6be8e63 | 935 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 PT |
936 | struct lov_desc *desc = &(obd->u.lov.desc); |
937 | ||
18751668 JL |
938 | if (!desc) { |
939 | rc = -EINVAL; | |
940 | goto out; | |
941 | } | |
d7e09d03 PT |
942 | |
943 | lprocfs_lov_init_vars(&lvars); | |
944 | ||
945 | rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars, | |
946 | lcfg, obd); | |
947 | if (rc > 0) | |
948 | rc = 0; | |
18751668 | 949 | goto out; |
d7e09d03 PT |
950 | } |
951 | case LCFG_POOL_NEW: | |
952 | case LCFG_POOL_ADD: | |
953 | case LCFG_POOL_DEL: | |
954 | case LCFG_POOL_REM: | |
18751668 | 955 | goto out; |
d7e09d03 PT |
956 | |
957 | default: { | |
958 | CERROR("Unknown command: %d\n", lcfg->lcfg_command); | |
18751668 JL |
959 | rc = -EINVAL; |
960 | goto out; | |
d7e09d03 PT |
961 | |
962 | } | |
963 | } | |
964 | out: | |
0a3bdb00 | 965 | return rc; |
d7e09d03 PT |
966 | } |
967 | ||
968 | static int lov_recreate(struct obd_export *exp, struct obdo *src_oa, | |
969 | struct lov_stripe_md **ea, struct obd_trans_info *oti) | |
970 | { | |
971 | struct lov_stripe_md *obj_mdp, *lsm; | |
972 | struct lov_obd *lov = &exp->exp_obd->u.lov; | |
973 | unsigned ost_idx; | |
974 | int rc, i; | |
d7e09d03 PT |
975 | |
976 | LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS && | |
977 | src_oa->o_flags & OBD_FL_RECREATE_OBJS); | |
978 | ||
840c94d5 | 979 | obj_mdp = kzalloc(sizeof(*obj_mdp), GFP_NOFS); |
36a86fe6 | 980 | if (!obj_mdp) |
0a3bdb00 | 981 | return -ENOMEM; |
d7e09d03 PT |
982 | |
983 | ost_idx = src_oa->o_nlink; | |
984 | lsm = *ea; | |
18751668 JL |
985 | if (lsm == NULL) { |
986 | rc = -EINVAL; | |
987 | goto out; | |
988 | } | |
d7e09d03 | 989 | if (ost_idx >= lov->desc.ld_tgt_count || |
18751668 JL |
990 | !lov->lov_tgts[ost_idx]) { |
991 | rc = -EINVAL; | |
992 | goto out; | |
993 | } | |
d7e09d03 PT |
994 | |
995 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
397632e4 YS |
996 | struct lov_oinfo *loi = lsm->lsm_oinfo[i]; |
997 | ||
998 | if (lov_oinfo_is_dummy(loi)) | |
999 | continue; | |
1000 | ||
1001 | if (loi->loi_ost_idx == ost_idx) { | |
1002 | if (ostid_id(&loi->loi_oi) != ostid_id(&src_oa->o_oi)) { | |
18751668 JL |
1003 | rc = -EINVAL; |
1004 | goto out; | |
1005 | } | |
d7e09d03 PT |
1006 | break; |
1007 | } | |
1008 | } | |
18751668 JL |
1009 | if (i == lsm->lsm_stripe_count) { |
1010 | rc = -EINVAL; | |
1011 | goto out; | |
1012 | } | |
d7e09d03 PT |
1013 | |
1014 | rc = obd_create(NULL, lov->lov_tgts[ost_idx]->ltd_exp, | |
1015 | src_oa, &obj_mdp, oti); | |
1016 | out: | |
840c94d5 | 1017 | kfree(obj_mdp); |
0a3bdb00 | 1018 | return rc; |
d7e09d03 PT |
1019 | } |
1020 | ||
1021 | /* the LOV expects oa->o_id to be set to the LOV object id */ | |
1022 | static int lov_create(const struct lu_env *env, struct obd_export *exp, | |
1023 | struct obdo *src_oa, struct lov_stripe_md **ea, | |
1024 | struct obd_trans_info *oti) | |
1025 | { | |
1026 | struct lov_obd *lov; | |
1027 | int rc = 0; | |
d7e09d03 PT |
1028 | |
1029 | LASSERT(ea != NULL); | |
1030 | if (exp == NULL) | |
0a3bdb00 | 1031 | return -EINVAL; |
d7e09d03 PT |
1032 | |
1033 | if ((src_oa->o_valid & OBD_MD_FLFLAGS) && | |
1034 | src_oa->o_flags == OBD_FL_DELORPHAN) { | |
1035 | /* should be used with LOV anymore */ | |
1036 | LBUG(); | |
1037 | } | |
1038 | ||
1039 | lov = &exp->exp_obd->u.lov; | |
1040 | if (!lov->desc.ld_active_tgt_count) | |
0a3bdb00 | 1041 | return -EIO; |
d7e09d03 PT |
1042 | |
1043 | obd_getref(exp->exp_obd); | |
1044 | /* Recreate a specific object id at the given OST index */ | |
1045 | if ((src_oa->o_valid & OBD_MD_FLFLAGS) && | |
1046 | (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) { | |
1047 | rc = lov_recreate(exp, src_oa, ea, oti); | |
1048 | } | |
1049 | ||
1050 | obd_putref(exp->exp_obd); | |
0a3bdb00 | 1051 | return rc; |
d7e09d03 PT |
1052 | } |
1053 | ||
1054 | #define ASSERT_LSM_MAGIC(lsmp) \ | |
1055 | do { \ | |
1056 | LASSERT((lsmp) != NULL); \ | |
1057 | LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC_V1 || \ | |
1058 | (lsmp)->lsm_magic == LOV_MAGIC_V3), \ | |
1059 | "%p->lsm_magic=%x\n", (lsmp), (lsmp)->lsm_magic); \ | |
1060 | } while (0) | |
1061 | ||
1062 | static int lov_destroy(const struct lu_env *env, struct obd_export *exp, | |
1063 | struct obdo *oa, struct lov_stripe_md *lsm, | |
1064 | struct obd_trans_info *oti, struct obd_export *md_exp, | |
1065 | void *capa) | |
1066 | { | |
1067 | struct lov_request_set *set; | |
1068 | struct obd_info oinfo; | |
1069 | struct lov_request *req; | |
1070 | struct list_head *pos; | |
1071 | struct lov_obd *lov; | |
1072 | int rc = 0, err = 0; | |
d7e09d03 PT |
1073 | |
1074 | ASSERT_LSM_MAGIC(lsm); | |
1075 | ||
1076 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1077 | return -ENODEV; |
d7e09d03 PT |
1078 | |
1079 | if (oa->o_valid & OBD_MD_FLCOOKIE) { | |
1080 | LASSERT(oti); | |
1081 | LASSERT(oti->oti_logcookies); | |
1082 | } | |
1083 | ||
1084 | lov = &exp->exp_obd->u.lov; | |
1085 | obd_getref(exp->exp_obd); | |
1086 | rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set); | |
1087 | if (rc) | |
18751668 | 1088 | goto out; |
d7e09d03 | 1089 | |
66e7a94a | 1090 | list_for_each(pos, &set->set_list) { |
d7e09d03 PT |
1091 | req = list_entry(pos, struct lov_request, rq_link); |
1092 | ||
1093 | if (oa->o_valid & OBD_MD_FLCOOKIE) | |
1094 | oti->oti_logcookies = set->set_cookies + req->rq_stripe; | |
1095 | ||
1096 | err = obd_destroy(env, lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1097 | req->rq_oi.oi_oa, NULL, oti, NULL, capa); | |
1098 | err = lov_update_common_set(set, req, err); | |
1099 | if (err) { | |
1100 | CERROR("%s: destroying objid "DOSTID" subobj " | |
1101 | DOSTID" on OST idx %d: rc = %d\n", | |
1102 | exp->exp_obd->obd_name, POSTID(&oa->o_oi), | |
1103 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1104 | req->rq_idx, err); | |
1105 | if (!rc) | |
1106 | rc = err; | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | if (rc == 0) { | |
1111 | LASSERT(lsm_op_find(lsm->lsm_magic) != NULL); | |
1112 | rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp); | |
1113 | } | |
1114 | err = lov_fini_destroy_set(set); | |
1115 | out: | |
1116 | obd_putref(exp->exp_obd); | |
0a3bdb00 | 1117 | return rc ? rc : err; |
d7e09d03 PT |
1118 | } |
1119 | ||
d7e09d03 PT |
1120 | static int lov_getattr_interpret(struct ptlrpc_request_set *rqset, |
1121 | void *data, int rc) | |
1122 | { | |
1123 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1124 | int err; | |
d7e09d03 | 1125 | |
1208bcd8 | 1126 | /* don't do attribute merge if this async op failed */ |
d7e09d03 PT |
1127 | if (rc) |
1128 | atomic_set(&lovset->set_completes, 0); | |
1129 | err = lov_fini_getattr_set(lovset); | |
0a3bdb00 | 1130 | return rc ? rc : err; |
d7e09d03 PT |
1131 | } |
1132 | ||
1133 | static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
1134 | struct ptlrpc_request_set *rqset) | |
1135 | { | |
1136 | struct lov_request_set *lovset; | |
1137 | struct lov_obd *lov; | |
1138 | struct list_head *pos; | |
1139 | struct lov_request *req; | |
1140 | int rc = 0, err; | |
d7e09d03 PT |
1141 | |
1142 | LASSERT(oinfo); | |
1143 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1144 | ||
1145 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1146 | return -ENODEV; |
d7e09d03 PT |
1147 | |
1148 | lov = &exp->exp_obd->u.lov; | |
1149 | ||
1150 | rc = lov_prep_getattr_set(exp, oinfo, &lovset); | |
1151 | if (rc) | |
0a3bdb00 | 1152 | return rc; |
d7e09d03 PT |
1153 | |
1154 | CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n", | |
1155 | POSTID(&oinfo->oi_md->lsm_oi), oinfo->oi_md->lsm_stripe_count, | |
1156 | oinfo->oi_md->lsm_stripe_size); | |
1157 | ||
1158 | list_for_each(pos, &lovset->set_list) { | |
1159 | req = list_entry(pos, struct lov_request, rq_link); | |
1160 | ||
2d00bd17 JP |
1161 | CDEBUG(D_INFO, "objid " DOSTID "[%d] has subobj " DOSTID " at idx%u\n", |
1162 | POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, | |
d7e09d03 PT |
1163 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); |
1164 | rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1165 | &req->rq_oi, rqset); | |
1166 | if (rc) { | |
1167 | CERROR("%s: getattr objid "DOSTID" subobj" | |
1168 | DOSTID" on OST idx %d: rc = %d\n", | |
1169 | exp->exp_obd->obd_name, | |
1170 | POSTID(&oinfo->oi_oa->o_oi), | |
1171 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1172 | req->rq_idx, rc); | |
18751668 | 1173 | goto out; |
d7e09d03 PT |
1174 | } |
1175 | } | |
1176 | ||
1177 | if (!list_empty(&rqset->set_requests)) { | |
1178 | LASSERT(rc == 0); | |
66e7a94a | 1179 | LASSERT(rqset->set_interpret == NULL); |
d7e09d03 PT |
1180 | rqset->set_interpret = lov_getattr_interpret; |
1181 | rqset->set_arg = (void *)lovset; | |
0a3bdb00 | 1182 | return rc; |
d7e09d03 PT |
1183 | } |
1184 | out: | |
1185 | if (rc) | |
1186 | atomic_set(&lovset->set_completes, 0); | |
1187 | err = lov_fini_getattr_set(lovset); | |
0a3bdb00 | 1188 | return rc ? rc : err; |
d7e09d03 PT |
1189 | } |
1190 | ||
d7e09d03 PT |
1191 | static int lov_setattr_interpret(struct ptlrpc_request_set *rqset, |
1192 | void *data, int rc) | |
1193 | { | |
1194 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1195 | int err; | |
d7e09d03 PT |
1196 | |
1197 | if (rc) | |
1198 | atomic_set(&lovset->set_completes, 0); | |
1199 | err = lov_fini_setattr_set(lovset); | |
0a3bdb00 | 1200 | return rc ? rc : err; |
d7e09d03 PT |
1201 | } |
1202 | ||
1203 | /* If @oti is given, the request goes from MDS and responses from OSTs are not | |
1204 | needed. Otherwise, a client is waiting for responses. */ | |
1205 | static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo, | |
1206 | struct obd_trans_info *oti, | |
1207 | struct ptlrpc_request_set *rqset) | |
1208 | { | |
1209 | struct lov_request_set *set; | |
1210 | struct lov_request *req; | |
1211 | struct list_head *pos; | |
1212 | struct lov_obd *lov; | |
1213 | int rc = 0; | |
d7e09d03 PT |
1214 | |
1215 | LASSERT(oinfo); | |
1216 | ASSERT_LSM_MAGIC(oinfo->oi_md); | |
1217 | if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) { | |
1218 | LASSERT(oti); | |
1219 | LASSERT(oti->oti_logcookies); | |
1220 | } | |
1221 | ||
1222 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1223 | return -ENODEV; |
d7e09d03 PT |
1224 | |
1225 | lov = &exp->exp_obd->u.lov; | |
1226 | rc = lov_prep_setattr_set(exp, oinfo, oti, &set); | |
1227 | if (rc) | |
0a3bdb00 | 1228 | return rc; |
d7e09d03 PT |
1229 | |
1230 | CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n", | |
1231 | POSTID(&oinfo->oi_md->lsm_oi), | |
1232 | oinfo->oi_md->lsm_stripe_count, | |
1233 | oinfo->oi_md->lsm_stripe_size); | |
1234 | ||
1235 | list_for_each(pos, &set->set_list) { | |
1236 | req = list_entry(pos, struct lov_request, rq_link); | |
1237 | ||
1238 | if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) | |
1239 | oti->oti_logcookies = set->set_cookies + req->rq_stripe; | |
1240 | ||
2d00bd17 JP |
1241 | CDEBUG(D_INFO, "objid " DOSTID "[%d] has subobj " DOSTID " at idx%u\n", |
1242 | POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe, | |
d7e09d03 PT |
1243 | POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx); |
1244 | ||
1245 | rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1246 | &req->rq_oi, oti, rqset); | |
1247 | if (rc) { | |
1248 | CERROR("error: setattr objid "DOSTID" subobj" | |
1249 | DOSTID" on OST idx %d: rc = %d\n", | |
1250 | POSTID(&set->set_oi->oi_oa->o_oi), | |
1251 | POSTID(&req->rq_oi.oi_oa->o_oi), | |
1252 | req->rq_idx, rc); | |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | /* If we are not waiting for responses on async requests, return. */ | |
1258 | if (rc || !rqset || list_empty(&rqset->set_requests)) { | |
1259 | int err; | |
1260 | if (rc) | |
1261 | atomic_set(&set->set_completes, 0); | |
1262 | err = lov_fini_setattr_set(set); | |
0a3bdb00 | 1263 | return rc ? rc : err; |
d7e09d03 PT |
1264 | } |
1265 | ||
1266 | LASSERT(rqset->set_interpret == NULL); | |
1267 | rqset->set_interpret = lov_setattr_interpret; | |
1268 | rqset->set_arg = (void *)set; | |
1269 | ||
0a3bdb00 | 1270 | return 0; |
d7e09d03 PT |
1271 | } |
1272 | ||
d7e09d03 PT |
1273 | /* find any ldlm lock of the inode in lov |
1274 | * return 0 not find | |
1275 | * 1 find one | |
1276 | * < 0 error */ | |
1277 | static int lov_find_cbdata(struct obd_export *exp, | |
1278 | struct lov_stripe_md *lsm, ldlm_iterator_t it, | |
1279 | void *data) | |
1280 | { | |
1281 | struct lov_obd *lov; | |
1282 | int rc = 0, i; | |
d7e09d03 PT |
1283 | |
1284 | ASSERT_LSM_MAGIC(lsm); | |
1285 | ||
1286 | if (!exp || !exp->exp_obd) | |
0a3bdb00 | 1287 | return -ENODEV; |
d7e09d03 PT |
1288 | |
1289 | lov = &exp->exp_obd->u.lov; | |
1290 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
1291 | struct lov_stripe_md submd; | |
1292 | struct lov_oinfo *loi = lsm->lsm_oinfo[i]; | |
1293 | ||
397632e4 YS |
1294 | if (lov_oinfo_is_dummy(loi)) |
1295 | continue; | |
1296 | ||
d7e09d03 | 1297 | if (!lov->lov_tgts[loi->loi_ost_idx]) { |
397632e4 | 1298 | CDEBUG(D_HA, "lov idx %d NULL\n", loi->loi_ost_idx); |
d7e09d03 PT |
1299 | continue; |
1300 | } | |
397632e4 | 1301 | |
d7e09d03 PT |
1302 | submd.lsm_oi = loi->loi_oi; |
1303 | submd.lsm_stripe_count = 0; | |
1304 | rc = obd_find_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, | |
1305 | &submd, it, data); | |
1306 | if (rc != 0) | |
0a3bdb00 | 1307 | return rc; |
d7e09d03 | 1308 | } |
0a3bdb00 | 1309 | return rc; |
d7e09d03 PT |
1310 | } |
1311 | ||
d7e09d03 PT |
1312 | int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) |
1313 | { | |
1314 | struct lov_request_set *lovset = (struct lov_request_set *)data; | |
1315 | int err; | |
d7e09d03 PT |
1316 | |
1317 | if (rc) | |
1318 | atomic_set(&lovset->set_completes, 0); | |
1319 | ||
1320 | err = lov_fini_statfs_set(lovset); | |
0a3bdb00 | 1321 | return rc ? rc : err; |
d7e09d03 PT |
1322 | } |
1323 | ||
1324 | static int lov_statfs_async(struct obd_export *exp, struct obd_info *oinfo, | |
1325 | __u64 max_age, struct ptlrpc_request_set *rqset) | |
1326 | { | |
1327 | struct obd_device *obd = class_exp2obd(exp); | |
1328 | struct lov_request_set *set; | |
1329 | struct lov_request *req; | |
1330 | struct list_head *pos; | |
1331 | struct lov_obd *lov; | |
1332 | int rc = 0; | |
d7e09d03 PT |
1333 | |
1334 | LASSERT(oinfo != NULL); | |
1335 | LASSERT(oinfo->oi_osfs != NULL); | |
1336 | ||
1337 | lov = &obd->u.lov; | |
1338 | rc = lov_prep_statfs_set(obd, oinfo, &set); | |
1339 | if (rc) | |
0a3bdb00 | 1340 | return rc; |
d7e09d03 | 1341 | |
66e7a94a | 1342 | list_for_each(pos, &set->set_list) { |
d7e09d03 PT |
1343 | req = list_entry(pos, struct lov_request, rq_link); |
1344 | rc = obd_statfs_async(lov->lov_tgts[req->rq_idx]->ltd_exp, | |
1345 | &req->rq_oi, max_age, rqset); | |
1346 | if (rc) | |
1347 | break; | |
1348 | } | |
1349 | ||
1350 | if (rc || list_empty(&rqset->set_requests)) { | |
1351 | int err; | |
1352 | if (rc) | |
1353 | atomic_set(&set->set_completes, 0); | |
1354 | err = lov_fini_statfs_set(set); | |
0a3bdb00 | 1355 | return rc ? rc : err; |
d7e09d03 PT |
1356 | } |
1357 | ||
1358 | LASSERT(rqset->set_interpret == NULL); | |
1359 | rqset->set_interpret = lov_statfs_interpret; | |
1360 | rqset->set_arg = (void *)set; | |
0a3bdb00 | 1361 | return 0; |
d7e09d03 PT |
1362 | } |
1363 | ||
1364 | static int lov_statfs(const struct lu_env *env, struct obd_export *exp, | |
1365 | struct obd_statfs *osfs, __u64 max_age, __u32 flags) | |
1366 | { | |
1367 | struct ptlrpc_request_set *set = NULL; | |
1368 | struct obd_info oinfo = { { { 0 } } }; | |
1369 | int rc = 0; | |
d7e09d03 PT |
1370 | |
1371 | /* for obdclass we forbid using obd_statfs_rqset, but prefer using async | |
1372 | * statfs requests */ | |
1373 | set = ptlrpc_prep_set(); | |
1374 | if (set == NULL) | |
0a3bdb00 | 1375 | return -ENOMEM; |
d7e09d03 PT |
1376 | |
1377 | oinfo.oi_osfs = osfs; | |
1378 | oinfo.oi_flags = flags; | |
1379 | rc = lov_statfs_async(exp, &oinfo, max_age, set); | |
1380 | if (rc == 0) | |
1381 | rc = ptlrpc_set_wait(set); | |
1382 | ptlrpc_set_destroy(set); | |
1383 | ||
0a3bdb00 | 1384 | return rc; |
d7e09d03 PT |
1385 | } |
1386 | ||
1387 | static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len, | |
1388 | void *karg, void *uarg) | |
1389 | { | |
1390 | struct obd_device *obddev = class_exp2obd(exp); | |
1391 | struct lov_obd *lov = &obddev->u.lov; | |
1392 | int i = 0, rc = 0, count = lov->desc.ld_tgt_count; | |
1393 | struct obd_uuid *uuidp; | |
d7e09d03 PT |
1394 | |
1395 | switch (cmd) { | |
1396 | case IOC_OBD_STATFS: { | |
1397 | struct obd_ioctl_data *data = karg; | |
1398 | struct obd_device *osc_obd; | |
1399 | struct obd_statfs stat_buf = {0}; | |
1400 | __u32 index; | |
1401 | __u32 flags; | |
1402 | ||
1403 | memcpy(&index, data->ioc_inlbuf2, sizeof(__u32)); | |
23191c97 | 1404 | if (index >= count) |
0a3bdb00 | 1405 | return -ENODEV; |
d7e09d03 PT |
1406 | |
1407 | if (!lov->lov_tgts[index]) | |
1408 | /* Try again with the next index */ | |
0a3bdb00 | 1409 | return -EAGAIN; |
d7e09d03 | 1410 | if (!lov->lov_tgts[index]->ltd_active) |
0a3bdb00 | 1411 | return -ENODATA; |
d7e09d03 PT |
1412 | |
1413 | osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp); | |
1414 | if (!osc_obd) | |
0a3bdb00 | 1415 | return -EINVAL; |
d7e09d03 PT |
1416 | |
1417 | /* copy UUID */ | |
1418 | if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd), | |
1419 | min((int) data->ioc_plen2, | |
1420 | (int) sizeof(struct obd_uuid)))) | |
0a3bdb00 | 1421 | return -EFAULT; |
d7e09d03 | 1422 | |
bcc3b704 | 1423 | flags = uarg ? *(__u32 *)uarg : 0; |
d7e09d03 PT |
1424 | /* got statfs data */ |
1425 | rc = obd_statfs(NULL, lov->lov_tgts[index]->ltd_exp, &stat_buf, | |
1426 | cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), | |
1427 | flags); | |
1428 | if (rc) | |
0a3bdb00 | 1429 | return rc; |
d7e09d03 PT |
1430 | if (copy_to_user(data->ioc_pbuf1, &stat_buf, |
1431 | min((int) data->ioc_plen1, | |
1432 | (int) sizeof(stat_buf)))) | |
0a3bdb00 | 1433 | return -EFAULT; |
d7e09d03 PT |
1434 | break; |
1435 | } | |
1436 | case OBD_IOC_LOV_GET_CONFIG: { | |
1437 | struct obd_ioctl_data *data; | |
1438 | struct lov_desc *desc; | |
1439 | char *buf = NULL; | |
1440 | __u32 *genp; | |
1441 | ||
1442 | len = 0; | |
45b30514 | 1443 | if (obd_ioctl_getdata(&buf, &len, uarg)) |
0a3bdb00 | 1444 | return -EINVAL; |
d7e09d03 PT |
1445 | |
1446 | data = (struct obd_ioctl_data *)buf; | |
1447 | ||
1448 | if (sizeof(*desc) > data->ioc_inllen1) { | |
1449 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1450 | return -EINVAL; |
d7e09d03 PT |
1451 | } |
1452 | ||
1453 | if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) { | |
1454 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1455 | return -EINVAL; |
d7e09d03 PT |
1456 | } |
1457 | ||
1458 | if (sizeof(__u32) * count > data->ioc_inllen3) { | |
1459 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 1460 | return -EINVAL; |
d7e09d03 PT |
1461 | } |
1462 | ||
1463 | desc = (struct lov_desc *)data->ioc_inlbuf1; | |
1464 | memcpy(desc, &(lov->desc), sizeof(*desc)); | |
1465 | ||
1466 | uuidp = (struct obd_uuid *)data->ioc_inlbuf2; | |
1467 | genp = (__u32 *)data->ioc_inlbuf3; | |
1468 | /* the uuid will be empty for deleted OSTs */ | |
1469 | for (i = 0; i < count; i++, uuidp++, genp++) { | |
1470 | if (!lov->lov_tgts[i]) | |
1471 | continue; | |
1472 | *uuidp = lov->lov_tgts[i]->ltd_uuid; | |
1473 | *genp = lov->lov_tgts[i]->ltd_gen; | |
1474 | } | |
1475 | ||
45b30514 | 1476 | if (copy_to_user(uarg, buf, len)) |
d7e09d03 PT |
1477 | rc = -EFAULT; |
1478 | obd_ioctl_freedata(buf, len); | |
1479 | break; | |
1480 | } | |
d7e09d03 PT |
1481 | case LL_IOC_LOV_GETSTRIPE: |
1482 | rc = lov_getstripe(exp, karg, uarg); | |
1483 | break; | |
d7e09d03 PT |
1484 | case OBD_IOC_QUOTACTL: { |
1485 | struct if_quotactl *qctl = karg; | |
1486 | struct lov_tgt_desc *tgt = NULL; | |
1487 | struct obd_quotactl *oqctl; | |
1488 | ||
1489 | if (qctl->qc_valid == QC_OSTIDX) { | |
1490 | if (qctl->qc_idx < 0 || count <= qctl->qc_idx) | |
0a3bdb00 | 1491 | return -EINVAL; |
d7e09d03 PT |
1492 | |
1493 | tgt = lov->lov_tgts[qctl->qc_idx]; | |
1494 | if (!tgt || !tgt->ltd_exp) | |
0a3bdb00 | 1495 | return -EINVAL; |
d7e09d03 PT |
1496 | } else if (qctl->qc_valid == QC_UUID) { |
1497 | for (i = 0; i < count; i++) { | |
1498 | tgt = lov->lov_tgts[i]; | |
1499 | if (!tgt || | |
1500 | !obd_uuid_equals(&tgt->ltd_uuid, | |
1501 | &qctl->obd_uuid)) | |
1502 | continue; | |
1503 | ||
1504 | if (tgt->ltd_exp == NULL) | |
0a3bdb00 | 1505 | return -EINVAL; |
d7e09d03 PT |
1506 | |
1507 | break; | |
1508 | } | |
1509 | } else { | |
0a3bdb00 | 1510 | return -EINVAL; |
d7e09d03 PT |
1511 | } |
1512 | ||
1513 | if (i >= count) | |
0a3bdb00 | 1514 | return -EAGAIN; |
d7e09d03 PT |
1515 | |
1516 | LASSERT(tgt && tgt->ltd_exp); | |
840c94d5 | 1517 | oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS); |
d7e09d03 | 1518 | if (!oqctl) |
0a3bdb00 | 1519 | return -ENOMEM; |
d7e09d03 PT |
1520 | |
1521 | QCTL_COPY(oqctl, qctl); | |
1522 | rc = obd_quotactl(tgt->ltd_exp, oqctl); | |
1523 | if (rc == 0) { | |
1524 | QCTL_COPY(qctl, oqctl); | |
1525 | qctl->qc_valid = QC_OSTIDX; | |
1526 | qctl->obd_uuid = tgt->ltd_uuid; | |
1527 | } | |
840c94d5 | 1528 | kfree(oqctl); |
d7e09d03 PT |
1529 | break; |
1530 | } | |
1531 | default: { | |
1532 | int set = 0; | |
1533 | ||
1534 | if (count == 0) | |
0a3bdb00 | 1535 | return -ENOTTY; |
d7e09d03 PT |
1536 | |
1537 | for (i = 0; i < count; i++) { | |
1538 | int err; | |
1539 | struct obd_device *osc_obd; | |
1540 | ||
1541 | /* OST was disconnected */ | |
1542 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) | |
1543 | continue; | |
1544 | ||
1545 | /* ll_umount_begin() sets force flag but for lov, not | |
1546 | * osc. Let's pass it through */ | |
1547 | osc_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp); | |
1548 | osc_obd->obd_force = obddev->obd_force; | |
1549 | err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp, | |
1550 | len, karg, uarg); | |
1551 | if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) { | |
0a3bdb00 | 1552 | return err; |
d7e09d03 PT |
1553 | } else if (err) { |
1554 | if (lov->lov_tgts[i]->ltd_active) { | |
1555 | CDEBUG(err == -ENOTTY ? | |
1556 | D_IOCTL : D_WARNING, | |
2d00bd17 | 1557 | "iocontrol OSC %s on OST idx %d cmd %x: err = %d\n", |
d7e09d03 PT |
1558 | lov_uuid2str(lov, i), |
1559 | i, cmd, err); | |
1560 | if (!rc) | |
1561 | rc = err; | |
1562 | } | |
1563 | } else { | |
1564 | set = 1; | |
1565 | } | |
1566 | } | |
1567 | if (!set && !rc) | |
1568 | rc = -EIO; | |
1569 | } | |
1570 | } | |
1571 | ||
0a3bdb00 | 1572 | return rc; |
d7e09d03 PT |
1573 | } |
1574 | ||
1575 | #define FIEMAP_BUFFER_SIZE 4096 | |
1576 | ||
1577 | /** | |
1578 | * Non-zero fe_logical indicates that this is a continuation FIEMAP | |
1579 | * call. The local end offset and the device are sent in the first | |
1580 | * fm_extent. This function calculates the stripe number from the index. | |
1581 | * This function returns a stripe_no on which mapping is to be restarted. | |
1582 | * | |
1583 | * This function returns fm_end_offset which is the in-OST offset at which | |
1584 | * mapping should be restarted. If fm_end_offset=0 is returned then caller | |
1585 | * will re-calculate proper offset in next stripe. | |
1586 | * Note that the first extent is passed to lov_get_info via the value field. | |
1587 | * | |
1588 | * \param fiemap fiemap request header | |
1589 | * \param lsm striping information for the file | |
1590 | * \param fm_start logical start of mapping | |
1591 | * \param fm_end logical end of mapping | |
1592 | * \param start_stripe starting stripe will be returned in this | |
1593 | */ | |
12e397cd LT |
1594 | static u64 fiemap_calc_fm_end_offset(struct ll_user_fiemap *fiemap, |
1595 | struct lov_stripe_md *lsm, u64 fm_start, | |
1596 | u64 fm_end, int *start_stripe) | |
d7e09d03 | 1597 | { |
21aef7d9 OD |
1598 | u64 local_end = fiemap->fm_extents[0].fe_logical; |
1599 | u64 lun_start, lun_end; | |
1600 | u64 fm_end_offset; | |
d7e09d03 PT |
1601 | int stripe_no = -1, i; |
1602 | ||
1603 | if (fiemap->fm_extent_count == 0 || | |
1604 | fiemap->fm_extents[0].fe_logical == 0) | |
1605 | return 0; | |
1606 | ||
1607 | /* Find out stripe_no from ost_index saved in the fe_device */ | |
1608 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
397632e4 YS |
1609 | struct lov_oinfo *oinfo = lsm->lsm_oinfo[i]; |
1610 | ||
1611 | if (lov_oinfo_is_dummy(oinfo)) | |
1612 | continue; | |
1613 | ||
1614 | if (oinfo->loi_ost_idx == fiemap->fm_extents[0].fe_device) { | |
d7e09d03 PT |
1615 | stripe_no = i; |
1616 | break; | |
1617 | } | |
1618 | } | |
1619 | if (stripe_no == -1) | |
1620 | return -EINVAL; | |
1621 | ||
1622 | /* If we have finished mapping on previous device, shift logical | |
1623 | * offset to start of next device */ | |
1624 | if ((lov_stripe_intersects(lsm, stripe_no, fm_start, fm_end, | |
1625 | &lun_start, &lun_end)) != 0 && | |
1626 | local_end < lun_end) { | |
1627 | fm_end_offset = local_end; | |
1628 | *start_stripe = stripe_no; | |
1629 | } else { | |
1630 | /* This is a special value to indicate that caller should | |
1631 | * calculate offset in next stripe. */ | |
1632 | fm_end_offset = 0; | |
1633 | *start_stripe = (stripe_no + 1) % lsm->lsm_stripe_count; | |
1634 | } | |
1635 | ||
1636 | return fm_end_offset; | |
1637 | } | |
1638 | ||
1639 | /** | |
1640 | * We calculate on which OST the mapping will end. If the length of mapping | |
1641 | * is greater than (stripe_size * stripe_count) then the last_stripe will | |
1642 | * will be one just before start_stripe. Else we check if the mapping | |
1643 | * intersects each OST and find last_stripe. | |
1644 | * This function returns the last_stripe and also sets the stripe_count | |
1645 | * over which the mapping is spread | |
1646 | * | |
1647 | * \param lsm striping information for the file | |
1648 | * \param fm_start logical start of mapping | |
1649 | * \param fm_end logical end of mapping | |
1650 | * \param start_stripe starting stripe of the mapping | |
1651 | * \param stripe_count the number of stripes across which to map is returned | |
1652 | * | |
1653 | * \retval last_stripe return the last stripe of the mapping | |
1654 | */ | |
12e397cd LT |
1655 | static int fiemap_calc_last_stripe(struct lov_stripe_md *lsm, u64 fm_start, |
1656 | u64 fm_end, int start_stripe, | |
1657 | int *stripe_count) | |
d7e09d03 PT |
1658 | { |
1659 | int last_stripe; | |
21aef7d9 | 1660 | u64 obd_start, obd_end; |
d7e09d03 PT |
1661 | int i, j; |
1662 | ||
1663 | if (fm_end - fm_start > lsm->lsm_stripe_size * lsm->lsm_stripe_count) { | |
b6ee3824 HM |
1664 | last_stripe = start_stripe < 1 ? lsm->lsm_stripe_count - 1 : |
1665 | start_stripe - 1; | |
d7e09d03 PT |
1666 | *stripe_count = lsm->lsm_stripe_count; |
1667 | } else { | |
1668 | for (j = 0, i = start_stripe; j < lsm->lsm_stripe_count; | |
1669 | i = (i + 1) % lsm->lsm_stripe_count, j++) { | |
1670 | if ((lov_stripe_intersects(lsm, i, fm_start, fm_end, | |
1671 | &obd_start, &obd_end)) == 0) | |
1672 | break; | |
1673 | } | |
1674 | *stripe_count = j; | |
1675 | last_stripe = (start_stripe + j - 1) %lsm->lsm_stripe_count; | |
1676 | } | |
1677 | ||
1678 | return last_stripe; | |
1679 | } | |
1680 | ||
1681 | /** | |
1682 | * Set fe_device and copy extents from local buffer into main return buffer. | |
1683 | * | |
1684 | * \param fiemap fiemap request header | |
1685 | * \param lcl_fm_ext array of local fiemap extents to be copied | |
1686 | * \param ost_index OST index to be written into the fm_device field for each | |
1687 | extent | |
1688 | * \param ext_count number of extents to be copied | |
1689 | * \param current_extent where to start copying in main extent array | |
1690 | */ | |
12e397cd LT |
1691 | static void fiemap_prepare_and_copy_exts(struct ll_user_fiemap *fiemap, |
1692 | struct ll_fiemap_extent *lcl_fm_ext, | |
1693 | int ost_index, unsigned int ext_count, | |
1694 | int current_extent) | |
d7e09d03 PT |
1695 | { |
1696 | char *to; | |
1697 | int ext; | |
1698 | ||
1699 | for (ext = 0; ext < ext_count; ext++) { | |
1700 | lcl_fm_ext[ext].fe_device = ost_index; | |
1701 | lcl_fm_ext[ext].fe_flags |= FIEMAP_EXTENT_NET; | |
1702 | } | |
1703 | ||
1704 | /* Copy fm_extent's from fm_local to return buffer */ | |
1705 | to = (char *)fiemap + fiemap_count_to_size(current_extent); | |
1706 | memcpy(to, lcl_fm_ext, ext_count * sizeof(struct ll_fiemap_extent)); | |
1707 | } | |
1708 | ||
1709 | /** | |
1710 | * Break down the FIEMAP request and send appropriate calls to individual OSTs. | |
1711 | * This also handles the restarting of FIEMAP calls in case mapping overflows | |
1712 | * the available number of extents in single call. | |
1713 | */ | |
1714 | static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key, | |
1715 | __u32 *vallen, void *val, struct lov_stripe_md *lsm) | |
1716 | { | |
1717 | struct ll_fiemap_info_key *fm_key = key; | |
1718 | struct ll_user_fiemap *fiemap = val; | |
1719 | struct ll_user_fiemap *fm_local = NULL; | |
1720 | struct ll_fiemap_extent *lcl_fm_ext; | |
1721 | int count_local; | |
1722 | unsigned int get_num_extents = 0; | |
1723 | int ost_index = 0, actual_start_stripe, start_stripe; | |
21aef7d9 OD |
1724 | u64 fm_start, fm_end, fm_length, fm_end_offset; |
1725 | u64 curr_loc; | |
d7e09d03 PT |
1726 | int current_extent = 0, rc = 0, i; |
1727 | int ost_eof = 0; /* EOF for object */ | |
1728 | int ost_done = 0; /* done with required mapping for this OST? */ | |
1729 | int last_stripe; | |
1730 | int cur_stripe = 0, cur_stripe_wrap = 0, stripe_count; | |
1731 | unsigned int buffer_size = FIEMAP_BUFFER_SIZE; | |
1732 | ||
18751668 JL |
1733 | if (!lsm_has_objects(lsm)) { |
1734 | rc = 0; | |
1735 | goto out; | |
1736 | } | |
d7e09d03 PT |
1737 | |
1738 | if (fiemap_count_to_size(fm_key->fiemap.fm_extent_count) < buffer_size) | |
1739 | buffer_size = fiemap_count_to_size(fm_key->fiemap.fm_extent_count); | |
1740 | ||
3d0ba716 | 1741 | fm_local = libcfs_kvzalloc(buffer_size, GFP_NOFS); |
18751668 JL |
1742 | if (fm_local == NULL) { |
1743 | rc = -ENOMEM; | |
1744 | goto out; | |
1745 | } | |
d7e09d03 PT |
1746 | lcl_fm_ext = &fm_local->fm_extents[0]; |
1747 | ||
1748 | count_local = fiemap_size_to_count(buffer_size); | |
1749 | ||
1750 | memcpy(fiemap, &fm_key->fiemap, sizeof(*fiemap)); | |
1751 | fm_start = fiemap->fm_start; | |
1752 | fm_length = fiemap->fm_length; | |
1753 | /* Calculate start stripe, last stripe and length of mapping */ | |
1754 | actual_start_stripe = start_stripe = lov_stripe_number(lsm, fm_start); | |
1755 | fm_end = (fm_length == ~0ULL ? fm_key->oa.o_size : | |
1756 | fm_start + fm_length - 1); | |
1757 | /* If fm_length != ~0ULL but fm_start+fm_length-1 exceeds file size */ | |
1758 | if (fm_end > fm_key->oa.o_size) | |
1759 | fm_end = fm_key->oa.o_size; | |
1760 | ||
1761 | last_stripe = fiemap_calc_last_stripe(lsm, fm_start, fm_end, | |
1762 | actual_start_stripe, &stripe_count); | |
1763 | ||
1764 | fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start, | |
1765 | fm_end, &start_stripe); | |
18751668 JL |
1766 | if (fm_end_offset == -EINVAL) { |
1767 | rc = -EINVAL; | |
1768 | goto out; | |
1769 | } | |
d7e09d03 | 1770 | |
ebdc4fc5 BJ |
1771 | if (fiemap_count_to_size(fiemap->fm_extent_count) > *vallen) |
1772 | fiemap->fm_extent_count = fiemap_size_to_count(*vallen); | |
d7e09d03 PT |
1773 | if (fiemap->fm_extent_count == 0) { |
1774 | get_num_extents = 1; | |
1775 | count_local = 0; | |
1776 | } | |
d7e09d03 PT |
1777 | /* Check each stripe */ |
1778 | for (cur_stripe = start_stripe, i = 0; i < stripe_count; | |
1779 | i++, cur_stripe = (cur_stripe + 1) % lsm->lsm_stripe_count) { | |
21aef7d9 OD |
1780 | u64 req_fm_len; /* Stores length of required mapping */ |
1781 | u64 len_mapped_single_call; | |
1782 | u64 lun_start, lun_end, obd_object_end; | |
d7e09d03 PT |
1783 | unsigned int ext_count; |
1784 | ||
1785 | cur_stripe_wrap = cur_stripe; | |
1786 | ||
1787 | /* Find out range of mapping on this stripe */ | |
1788 | if ((lov_stripe_intersects(lsm, cur_stripe, fm_start, fm_end, | |
1789 | &lun_start, &obd_object_end)) == 0) | |
1790 | continue; | |
1791 | ||
397632e4 YS |
1792 | if (lov_oinfo_is_dummy(lsm->lsm_oinfo[cur_stripe])) { |
1793 | rc = -EIO; | |
1794 | goto out; | |
1795 | } | |
1796 | ||
d7e09d03 PT |
1797 | /* If this is a continuation FIEMAP call and we are on |
1798 | * starting stripe then lun_start needs to be set to | |
1799 | * fm_end_offset */ | |
1800 | if (fm_end_offset != 0 && cur_stripe == start_stripe) | |
1801 | lun_start = fm_end_offset; | |
1802 | ||
1803 | if (fm_length != ~0ULL) { | |
1804 | /* Handle fm_start + fm_length overflow */ | |
1805 | if (fm_start + fm_length < fm_start) | |
1806 | fm_length = ~0ULL - fm_start; | |
1807 | lun_end = lov_size_to_stripe(lsm, fm_start + fm_length, | |
1808 | cur_stripe); | |
1809 | } else { | |
1810 | lun_end = ~0ULL; | |
1811 | } | |
1812 | ||
1813 | if (lun_start == lun_end) | |
1814 | continue; | |
1815 | ||
1816 | req_fm_len = obd_object_end - lun_start; | |
1817 | fm_local->fm_length = 0; | |
1818 | len_mapped_single_call = 0; | |
1819 | ||
1820 | /* If the output buffer is very large and the objects have many | |
1821 | * extents we may need to loop on a single OST repeatedly */ | |
1822 | ost_eof = 0; | |
1823 | ost_done = 0; | |
1824 | do { | |
1825 | if (get_num_extents == 0) { | |
1826 | /* Don't get too many extents. */ | |
1827 | if (current_extent + count_local > | |
1828 | fiemap->fm_extent_count) | |
1829 | count_local = fiemap->fm_extent_count - | |
1830 | current_extent; | |
1831 | } | |
1832 | ||
1833 | lun_start += len_mapped_single_call; | |
1834 | fm_local->fm_length = req_fm_len - len_mapped_single_call; | |
1835 | req_fm_len = fm_local->fm_length; | |
1836 | fm_local->fm_extent_count = count_local; | |
1837 | fm_local->fm_mapped_extents = 0; | |
1838 | fm_local->fm_flags = fiemap->fm_flags; | |
1839 | ||
1840 | fm_key->oa.o_oi = lsm->lsm_oinfo[cur_stripe]->loi_oi; | |
1841 | ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx; | |
1842 | ||
18751668 JL |
1843 | if (ost_index < 0 || |
1844 | ost_index >= lov->desc.ld_tgt_count) { | |
1845 | rc = -EINVAL; | |
1846 | goto out; | |
1847 | } | |
d7e09d03 PT |
1848 | |
1849 | /* If OST is inactive, return extent with UNKNOWN flag */ | |
1850 | if (!lov->lov_tgts[ost_index]->ltd_active) { | |
1851 | fm_local->fm_flags |= FIEMAP_EXTENT_LAST; | |
1852 | fm_local->fm_mapped_extents = 1; | |
1853 | ||
1854 | lcl_fm_ext[0].fe_logical = lun_start; | |
1855 | lcl_fm_ext[0].fe_length = obd_object_end - | |
1856 | lun_start; | |
1857 | lcl_fm_ext[0].fe_flags |= FIEMAP_EXTENT_UNKNOWN; | |
1858 | ||
1859 | goto inactive_tgt; | |
1860 | } | |
1861 | ||
1862 | fm_local->fm_start = lun_start; | |
1863 | fm_local->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER; | |
1864 | memcpy(&fm_key->fiemap, fm_local, sizeof(*fm_local)); | |
1865 | *vallen=fiemap_count_to_size(fm_local->fm_extent_count); | |
1866 | rc = obd_get_info(NULL, | |
1867 | lov->lov_tgts[ost_index]->ltd_exp, | |
1868 | keylen, key, vallen, fm_local, lsm); | |
1869 | if (rc != 0) | |
18751668 | 1870 | goto out; |
d7e09d03 PT |
1871 | |
1872 | inactive_tgt: | |
1873 | ext_count = fm_local->fm_mapped_extents; | |
1874 | if (ext_count == 0) { | |
1875 | ost_done = 1; | |
1876 | /* If last stripe has hole at the end, | |
1877 | * then we need to return */ | |
1878 | if (cur_stripe_wrap == last_stripe) { | |
1879 | fiemap->fm_mapped_extents = 0; | |
1880 | goto finish; | |
1881 | } | |
1882 | break; | |
1883 | } | |
1884 | ||
1885 | /* If we just need num of extents then go to next device */ | |
1886 | if (get_num_extents) { | |
1887 | current_extent += ext_count; | |
1888 | break; | |
1889 | } | |
1890 | ||
1891 | len_mapped_single_call = lcl_fm_ext[ext_count-1].fe_logical - | |
1892 | lun_start + lcl_fm_ext[ext_count - 1].fe_length; | |
1893 | ||
1894 | /* Have we finished mapping on this device? */ | |
1895 | if (req_fm_len <= len_mapped_single_call) | |
1896 | ost_done = 1; | |
1897 | ||
1898 | /* Clear the EXTENT_LAST flag which can be present on | |
1899 | * last extent */ | |
1900 | if (lcl_fm_ext[ext_count-1].fe_flags & FIEMAP_EXTENT_LAST) | |
1901 | lcl_fm_ext[ext_count - 1].fe_flags &= | |
1902 | ~FIEMAP_EXTENT_LAST; | |
1903 | ||
1904 | curr_loc = lov_stripe_size(lsm, | |
1905 | lcl_fm_ext[ext_count - 1].fe_logical+ | |
1906 | lcl_fm_ext[ext_count - 1].fe_length, | |
1907 | cur_stripe); | |
1908 | if (curr_loc >= fm_key->oa.o_size) | |
1909 | ost_eof = 1; | |
1910 | ||
1911 | fiemap_prepare_and_copy_exts(fiemap, lcl_fm_ext, | |
1912 | ost_index, ext_count, | |
1913 | current_extent); | |
1914 | ||
1915 | current_extent += ext_count; | |
1916 | ||
1917 | /* Ran out of available extents? */ | |
1918 | if (current_extent >= fiemap->fm_extent_count) | |
1919 | goto finish; | |
1920 | } while (ost_done == 0 && ost_eof == 0); | |
1921 | ||
1922 | if (cur_stripe_wrap == last_stripe) | |
1923 | goto finish; | |
1924 | } | |
1925 | ||
1926 | finish: | |
1927 | /* Indicate that we are returning device offsets unless file just has | |
1928 | * single stripe */ | |
1929 | if (lsm->lsm_stripe_count > 1) | |
1930 | fiemap->fm_flags |= FIEMAP_FLAG_DEVICE_ORDER; | |
1931 | ||
1932 | if (get_num_extents) | |
1933 | goto skip_last_device_calc; | |
1934 | ||
1935 | /* Check if we have reached the last stripe and whether mapping for that | |
1936 | * stripe is done. */ | |
1937 | if (cur_stripe_wrap == last_stripe) { | |
1938 | if (ost_done || ost_eof) | |
1939 | fiemap->fm_extents[current_extent - 1].fe_flags |= | |
1940 | FIEMAP_EXTENT_LAST; | |
1941 | } | |
1942 | ||
1943 | skip_last_device_calc: | |
1944 | fiemap->fm_mapped_extents = current_extent; | |
1945 | ||
1946 | out: | |
3d0ba716 | 1947 | kvfree(fm_local); |
d7e09d03 PT |
1948 | return rc; |
1949 | } | |
1950 | ||
1951 | static int lov_get_info(const struct lu_env *env, struct obd_export *exp, | |
1952 | __u32 keylen, void *key, __u32 *vallen, void *val, | |
1953 | struct lov_stripe_md *lsm) | |
1954 | { | |
1955 | struct obd_device *obddev = class_exp2obd(exp); | |
1956 | struct lov_obd *lov = &obddev->u.lov; | |
1957 | int i, rc; | |
d7e09d03 PT |
1958 | |
1959 | if (!vallen || !val) | |
0a3bdb00 | 1960 | return -EFAULT; |
d7e09d03 PT |
1961 | |
1962 | obd_getref(obddev); | |
1963 | ||
1964 | if (KEY_IS(KEY_LOCK_TO_STRIPE)) { | |
1965 | struct { | |
1966 | char name[16]; | |
1967 | struct ldlm_lock *lock; | |
1968 | } *data = key; | |
1969 | struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name; | |
1970 | struct lov_oinfo *loi; | |
1971 | __u32 *stripe = val; | |
1972 | ||
18751668 JL |
1973 | if (*vallen < sizeof(*stripe)) { |
1974 | rc = -EFAULT; | |
1975 | goto out; | |
1976 | } | |
d7e09d03 PT |
1977 | *vallen = sizeof(*stripe); |
1978 | ||
1979 | /* XXX This is another one of those bits that will need to | |
1980 | * change if we ever actually support nested LOVs. It uses | |
1981 | * the lock's export to find out which stripe it is. */ | |
1982 | /* XXX - it's assumed all the locks for deleted OSTs have | |
1983 | * been cancelled. Also, the export for deleted OSTs will | |
1984 | * be NULL and won't match the lock's export. */ | |
1985 | for (i = 0; i < lsm->lsm_stripe_count; i++) { | |
1986 | loi = lsm->lsm_oinfo[i]; | |
397632e4 YS |
1987 | if (lov_oinfo_is_dummy(loi)) |
1988 | continue; | |
1989 | ||
d7e09d03 PT |
1990 | if (!lov->lov_tgts[loi->loi_ost_idx]) |
1991 | continue; | |
1992 | if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp == | |
1993 | data->lock->l_conn_export && | |
1994 | ostid_res_name_eq(&loi->loi_oi, res_id)) { | |
1995 | *stripe = i; | |
18751668 JL |
1996 | rc = 0; |
1997 | goto out; | |
d7e09d03 PT |
1998 | } |
1999 | } | |
2000 | LDLM_ERROR(data->lock, "lock on inode without such object"); | |
2001 | dump_lsm(D_ERROR, lsm); | |
18751668 JL |
2002 | rc = -ENXIO; |
2003 | goto out; | |
d7e09d03 PT |
2004 | } else if (KEY_IS(KEY_LAST_ID)) { |
2005 | struct obd_id_info *info = val; | |
21aef7d9 | 2006 | __u32 size = sizeof(u64); |
d7e09d03 PT |
2007 | struct lov_tgt_desc *tgt; |
2008 | ||
2009 | LASSERT(*vallen == sizeof(struct obd_id_info)); | |
2010 | tgt = lov->lov_tgts[info->idx]; | |
2011 | ||
18751668 JL |
2012 | if (!tgt || !tgt->ltd_active) { |
2013 | rc = -ESRCH; | |
2014 | goto out; | |
2015 | } | |
d7e09d03 PT |
2016 | |
2017 | rc = obd_get_info(env, tgt->ltd_exp, keylen, key, | |
2018 | &size, info->data, NULL); | |
18751668 JL |
2019 | rc = 0; |
2020 | goto out; | |
d7e09d03 PT |
2021 | } else if (KEY_IS(KEY_LOVDESC)) { |
2022 | struct lov_desc *desc_ret = val; | |
2023 | *desc_ret = lov->desc; | |
2024 | ||
18751668 JL |
2025 | rc = 0; |
2026 | goto out; | |
d7e09d03 PT |
2027 | } else if (KEY_IS(KEY_FIEMAP)) { |
2028 | rc = lov_fiemap(lov, keylen, key, vallen, val, lsm); | |
18751668 | 2029 | goto out; |
d7e09d03 PT |
2030 | } else if (KEY_IS(KEY_CONNECT_FLAG)) { |
2031 | struct lov_tgt_desc *tgt; | |
bcc3b704 | 2032 | __u64 ost_idx = *((__u64 *)val); |
d7e09d03 PT |
2033 | |
2034 | LASSERT(*vallen == sizeof(__u64)); | |
2035 | LASSERT(ost_idx < lov->desc.ld_tgt_count); | |
2036 | tgt = lov->lov_tgts[ost_idx]; | |
2037 | ||
18751668 JL |
2038 | if (!tgt || !tgt->ltd_exp) { |
2039 | rc = -ESRCH; | |
2040 | goto out; | |
2041 | } | |
d7e09d03 PT |
2042 | |
2043 | *((__u64 *)val) = exp_connect_flags(tgt->ltd_exp); | |
18751668 JL |
2044 | rc = 0; |
2045 | goto out; | |
d7e09d03 PT |
2046 | } else if (KEY_IS(KEY_TGT_COUNT)) { |
2047 | *((int *)val) = lov->desc.ld_tgt_count; | |
18751668 JL |
2048 | rc = 0; |
2049 | goto out; | |
d7e09d03 PT |
2050 | } |
2051 | ||
2052 | rc = -EINVAL; | |
2053 | ||
2054 | out: | |
2055 | obd_putref(obddev); | |
0a3bdb00 | 2056 | return rc; |
d7e09d03 PT |
2057 | } |
2058 | ||
2059 | static int lov_set_info_async(const struct lu_env *env, struct obd_export *exp, | |
21aef7d9 | 2060 | u32 keylen, void *key, u32 vallen, |
d7e09d03 PT |
2061 | void *val, struct ptlrpc_request_set *set) |
2062 | { | |
2063 | struct obd_device *obddev = class_exp2obd(exp); | |
2064 | struct lov_obd *lov = &obddev->u.lov; | |
21aef7d9 | 2065 | u32 count; |
d7e09d03 PT |
2066 | int i, rc = 0, err; |
2067 | struct lov_tgt_desc *tgt; | |
2068 | unsigned incr, check_uuid, | |
2069 | do_inactive, no_set; | |
2070 | unsigned next_id = 0, mds_con = 0, capa = 0; | |
d7e09d03 PT |
2071 | |
2072 | incr = check_uuid = do_inactive = no_set = 0; | |
2073 | if (set == NULL) { | |
2074 | no_set = 1; | |
2075 | set = ptlrpc_prep_set(); | |
2076 | if (!set) | |
0a3bdb00 | 2077 | return -ENOMEM; |
d7e09d03 PT |
2078 | } |
2079 | ||
2080 | obd_getref(obddev); | |
2081 | count = lov->desc.ld_tgt_count; | |
2082 | ||
2083 | if (KEY_IS(KEY_NEXT_ID)) { | |
2084 | count = vallen / sizeof(struct obd_id_info); | |
21aef7d9 | 2085 | vallen = sizeof(u64); |
d7e09d03 PT |
2086 | incr = sizeof(struct obd_id_info); |
2087 | do_inactive = 1; | |
2088 | next_id = 1; | |
2089 | } else if (KEY_IS(KEY_CHECKSUM)) { | |
2090 | do_inactive = 1; | |
2091 | } else if (KEY_IS(KEY_EVICT_BY_NID)) { | |
2092 | /* use defaults: do_inactive = incr = 0; */ | |
2093 | } else if (KEY_IS(KEY_MDS_CONN)) { | |
2094 | mds_con = 1; | |
2095 | } else if (KEY_IS(KEY_CAPA_KEY)) { | |
2096 | capa = 1; | |
2097 | } else if (KEY_IS(KEY_CACHE_SET)) { | |
2098 | LASSERT(lov->lov_cache == NULL); | |
2099 | lov->lov_cache = val; | |
2100 | do_inactive = 1; | |
2101 | } | |
2102 | ||
2103 | for (i = 0; i < count; i++, val = (char *)val + incr) { | |
2104 | if (next_id) { | |
bcc3b704 | 2105 | tgt = lov->lov_tgts[((struct obd_id_info *)val)->idx]; |
d7e09d03 PT |
2106 | } else { |
2107 | tgt = lov->lov_tgts[i]; | |
2108 | } | |
2109 | /* OST was disconnected */ | |
2110 | if (!tgt || !tgt->ltd_exp) | |
2111 | continue; | |
2112 | ||
2113 | /* OST is inactive and we don't want inactive OSCs */ | |
2114 | if (!tgt->ltd_active && !do_inactive) | |
2115 | continue; | |
2116 | ||
2117 | if (mds_con) { | |
2118 | struct mds_group_info *mgi; | |
2119 | ||
2120 | LASSERT(vallen == sizeof(*mgi)); | |
2121 | mgi = (struct mds_group_info *)val; | |
2122 | ||
2123 | /* Only want a specific OSC */ | |
2124 | if (mgi->uuid && !obd_uuid_equals(mgi->uuid, | |
2125 | &tgt->ltd_uuid)) | |
2126 | continue; | |
2127 | ||
2128 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2129 | keylen, key, sizeof(int), | |
2130 | &mgi->group, set); | |
2131 | } else if (next_id) { | |
2132 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2133 | keylen, key, vallen, | |
bcc3b704 | 2134 | ((struct obd_id_info *)val)->data, set); |
d7e09d03 | 2135 | } else if (capa) { |
bcc3b704 | 2136 | struct mds_capa_info *info = (struct mds_capa_info *)val; |
d7e09d03 PT |
2137 | |
2138 | LASSERT(vallen == sizeof(*info)); | |
2139 | ||
2140 | /* Only want a specific OSC */ | |
2141 | if (info->uuid && | |
2142 | !obd_uuid_equals(info->uuid, &tgt->ltd_uuid)) | |
2143 | continue; | |
2144 | ||
2145 | err = obd_set_info_async(env, tgt->ltd_exp, keylen, | |
2146 | key, sizeof(*info->capa), | |
2147 | info->capa, set); | |
2148 | } else { | |
2149 | /* Only want a specific OSC */ | |
2150 | if (check_uuid && | |
2151 | !obd_uuid_equals(val, &tgt->ltd_uuid)) | |
2152 | continue; | |
2153 | ||
2154 | err = obd_set_info_async(env, tgt->ltd_exp, | |
2155 | keylen, key, vallen, val, set); | |
2156 | } | |
2157 | ||
2158 | if (!rc) | |
2159 | rc = err; | |
2160 | } | |
2161 | ||
2162 | obd_putref(obddev); | |
2163 | if (no_set) { | |
2164 | err = ptlrpc_set_wait(set); | |
2165 | if (!rc) | |
2166 | rc = err; | |
2167 | ptlrpc_set_destroy(set); | |
2168 | } | |
0a3bdb00 | 2169 | return rc; |
d7e09d03 PT |
2170 | } |
2171 | ||
d7e09d03 | 2172 | void lov_stripe_lock(struct lov_stripe_md *md) |
82604f8c | 2173 | __acquires(&md->lsm_lock) |
d7e09d03 PT |
2174 | { |
2175 | LASSERT(md->lsm_lock_owner != current_pid()); | |
2176 | spin_lock(&md->lsm_lock); | |
2177 | LASSERT(md->lsm_lock_owner == 0); | |
2178 | md->lsm_lock_owner = current_pid(); | |
2179 | } | |
2180 | EXPORT_SYMBOL(lov_stripe_lock); | |
2181 | ||
2182 | void lov_stripe_unlock(struct lov_stripe_md *md) | |
82604f8c | 2183 | __releases(&md->lsm_lock) |
d7e09d03 PT |
2184 | { |
2185 | LASSERT(md->lsm_lock_owner == current_pid()); | |
2186 | md->lsm_lock_owner = 0; | |
2187 | spin_unlock(&md->lsm_lock); | |
2188 | } | |
2189 | EXPORT_SYMBOL(lov_stripe_unlock); | |
2190 | ||
2191 | static int lov_quotactl(struct obd_device *obd, struct obd_export *exp, | |
2192 | struct obd_quotactl *oqctl) | |
2193 | { | |
2194 | struct lov_obd *lov = &obd->u.lov; | |
2195 | struct lov_tgt_desc *tgt; | |
2196 | __u64 curspace = 0; | |
2197 | __u64 bhardlimit = 0; | |
2198 | int i, rc = 0; | |
d7e09d03 PT |
2199 | |
2200 | if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON && | |
2201 | oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF && | |
2202 | oqctl->qc_cmd != Q_GETOQUOTA && | |
2203 | oqctl->qc_cmd != Q_INITQUOTA && | |
2204 | oqctl->qc_cmd != LUSTRE_Q_SETQUOTA && | |
2205 | oqctl->qc_cmd != Q_FINVALIDATE) { | |
2206 | CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd); | |
0a3bdb00 | 2207 | return -EFAULT; |
d7e09d03 PT |
2208 | } |
2209 | ||
2210 | /* for lov tgt */ | |
2211 | obd_getref(obd); | |
2212 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
2213 | int err; | |
2214 | ||
2215 | tgt = lov->lov_tgts[i]; | |
2216 | ||
2217 | if (!tgt) | |
2218 | continue; | |
2219 | ||
2220 | if (!tgt->ltd_active || tgt->ltd_reap) { | |
2221 | if (oqctl->qc_cmd == Q_GETOQUOTA && | |
2222 | lov->lov_tgts[i]->ltd_activate) { | |
2223 | rc = -EREMOTEIO; | |
2224 | CERROR("ost %d is inactive\n", i); | |
2225 | } else { | |
2226 | CDEBUG(D_HA, "ost %d is inactive\n", i); | |
2227 | } | |
2228 | continue; | |
2229 | } | |
2230 | ||
2231 | err = obd_quotactl(tgt->ltd_exp, oqctl); | |
2232 | if (err) { | |
2233 | if (tgt->ltd_active && !rc) | |
2234 | rc = err; | |
2235 | continue; | |
2236 | } | |
2237 | ||
2238 | if (oqctl->qc_cmd == Q_GETOQUOTA) { | |
2239 | curspace += oqctl->qc_dqblk.dqb_curspace; | |
2240 | bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit; | |
2241 | } | |
2242 | } | |
2243 | obd_putref(obd); | |
2244 | ||
2245 | if (oqctl->qc_cmd == Q_GETOQUOTA) { | |
2246 | oqctl->qc_dqblk.dqb_curspace = curspace; | |
2247 | oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit; | |
2248 | } | |
0a3bdb00 | 2249 | return rc; |
d7e09d03 PT |
2250 | } |
2251 | ||
2252 | static int lov_quotacheck(struct obd_device *obd, struct obd_export *exp, | |
2253 | struct obd_quotactl *oqctl) | |
2254 | { | |
2255 | struct lov_obd *lov = &obd->u.lov; | |
2256 | int i, rc = 0; | |
d7e09d03 PT |
2257 | |
2258 | obd_getref(obd); | |
2259 | ||
2260 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
2261 | if (!lov->lov_tgts[i]) | |
2262 | continue; | |
2263 | ||
2264 | /* Skip quota check on the administratively disabled OSTs. */ | |
2265 | if (!lov->lov_tgts[i]->ltd_activate) { | |
2d00bd17 JP |
2266 | CWARN("lov idx %d was administratively disabled, skip quotacheck on it.\n", |
2267 | i); | |
d7e09d03 PT |
2268 | continue; |
2269 | } | |
2270 | ||
2271 | if (!lov->lov_tgts[i]->ltd_active) { | |
2272 | CERROR("lov idx %d inactive\n", i); | |
2273 | rc = -EIO; | |
2274 | goto out; | |
2275 | } | |
2276 | } | |
2277 | ||
2278 | for (i = 0; i < lov->desc.ld_tgt_count; i++) { | |
2279 | int err; | |
2280 | ||
2281 | if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_activate) | |
2282 | continue; | |
2283 | ||
2284 | err = obd_quotacheck(lov->lov_tgts[i]->ltd_exp, oqctl); | |
2285 | if (err && !rc) | |
2286 | rc = err; | |
2287 | } | |
2288 | ||
2289 | out: | |
2290 | obd_putref(obd); | |
2291 | ||
0a3bdb00 | 2292 | return rc; |
d7e09d03 PT |
2293 | } |
2294 | ||
12e397cd | 2295 | static struct obd_ops lov_obd_ops = { |
d7e09d03 PT |
2296 | .o_owner = THIS_MODULE, |
2297 | .o_setup = lov_setup, | |
2298 | .o_precleanup = lov_precleanup, | |
2299 | .o_cleanup = lov_cleanup, | |
5e448831 | 2300 | /*.o_process_config = lov_process_config,*/ |
d7e09d03 PT |
2301 | .o_connect = lov_connect, |
2302 | .o_disconnect = lov_disconnect, | |
2303 | .o_statfs = lov_statfs, | |
2304 | .o_statfs_async = lov_statfs_async, | |
2305 | .o_packmd = lov_packmd, | |
2306 | .o_unpackmd = lov_unpackmd, | |
2307 | .o_create = lov_create, | |
2308 | .o_destroy = lov_destroy, | |
d7e09d03 | 2309 | .o_getattr_async = lov_getattr_async, |
d7e09d03 | 2310 | .o_setattr_async = lov_setattr_async, |
d7e09d03 | 2311 | .o_adjust_kms = lov_adjust_kms, |
d7e09d03 | 2312 | .o_find_cbdata = lov_find_cbdata, |
d7e09d03 PT |
2313 | .o_iocontrol = lov_iocontrol, |
2314 | .o_get_info = lov_get_info, | |
2315 | .o_set_info_async = lov_set_info_async, | |
d7e09d03 PT |
2316 | .o_notify = lov_notify, |
2317 | .o_pool_new = lov_pool_new, | |
2318 | .o_pool_rem = lov_pool_remove, | |
2319 | .o_pool_add = lov_pool_add, | |
2320 | .o_pool_del = lov_pool_del, | |
2321 | .o_getref = lov_getref, | |
2322 | .o_putref = lov_putref, | |
2323 | .o_quotactl = lov_quotactl, | |
2324 | .o_quotacheck = lov_quotacheck, | |
2325 | }; | |
2326 | ||
2327 | struct kmem_cache *lov_oinfo_slab; | |
2328 | ||
12e397cd | 2329 | static int __init lov_init(void) |
d7e09d03 | 2330 | { |
e6be8e63 | 2331 | struct lprocfs_static_vars lvars = { NULL }; |
d7e09d03 | 2332 | int rc; |
d7e09d03 PT |
2333 | |
2334 | /* print an address of _any_ initialized kernel symbol from this | |
2335 | * module, to allow debugging with gdb that doesn't support data | |
2336 | * symbols from modules.*/ | |
2337 | CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches); | |
2338 | ||
2339 | rc = lu_kmem_init(lov_caches); | |
2340 | if (rc) | |
2341 | return rc; | |
2342 | ||
2343 | lov_oinfo_slab = kmem_cache_create("lov_oinfo", | |
2344 | sizeof(struct lov_oinfo), | |
2345 | 0, SLAB_HWCACHE_ALIGN, NULL); | |
2346 | if (lov_oinfo_slab == NULL) { | |
2347 | lu_kmem_fini(lov_caches); | |
2348 | return -ENOMEM; | |
2349 | } | |
2350 | lprocfs_lov_init_vars(&lvars); | |
2351 | ||
2962b440 | 2352 | rc = class_register_type(&lov_obd_ops, NULL, |
d7e09d03 PT |
2353 | LUSTRE_LOV_NAME, &lov_device_type); |
2354 | ||
2355 | if (rc) { | |
2356 | kmem_cache_destroy(lov_oinfo_slab); | |
2357 | lu_kmem_fini(lov_caches); | |
2358 | } | |
2359 | ||
0a3bdb00 | 2360 | return rc; |
d7e09d03 PT |
2361 | } |
2362 | ||
2363 | static void /*__exit*/ lov_exit(void) | |
2364 | { | |
2365 | class_unregister_type(LUSTRE_LOV_NAME); | |
2366 | kmem_cache_destroy(lov_oinfo_slab); | |
2367 | ||
2368 | lu_kmem_fini(lov_caches); | |
2369 | } | |
2370 | ||
2371 | MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); | |
2372 | MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver"); | |
2373 | MODULE_LICENSE("GPL"); | |
6960736c | 2374 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
d7e09d03 | 2375 | |
6960736c GKH |
2376 | module_init(lov_init); |
2377 | module_exit(lov_exit); |