Whamcloud - gitweb
c72e477c6467b488563d6fd343dab044490efd5d
[fs/lustre-release.git] / lustre / quota / quota_master.c
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 only,
10  * as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License version 2 for more details (a copy is included
16  * in the LICENSE file that accompanied this code).
17  *
18  * You should have received a copy of the GNU General Public License
19  * version 2 along with this program; If not, see
20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
21  *
22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23  * CA 95054 USA or visit www.sun.com if you need additional information or
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
30  * Use is subject to license terms.
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/quota/quota_master.c
37  *
38  * Lustre Quota Master request handler
39  *
40  * Author: Niu YaWei <niu@clusterfs.com>
41  */
42
43 #ifndef EXPORT_SYMTAB
44 # define EXPORT_SYMTAB
45 #endif
46
47 #define DEBUG_SUBSYSTEM S_LQUOTA
48
49 #include <linux/version.h>
50 #include <linux/fs.h>
51 #include <asm/unistd.h>
52 #include <linux/slab.h>
53 #include <linux/quotaops.h>
54 #include <linux/module.h>
55 #include <linux/init.h>
56 #include <linux/quota.h>
57
58 #include <obd_class.h>
59 #include <lustre_quota.h>
60 #include <lustre_fsfilt.h>
61 #include <lustre_mds.h>
62
63 #include "quota_internal.h"
64
65 #ifdef HAVE_QUOTA_SUPPORT
66
67 /* lock ordering: mds->mds_qonoff_sem > dquot->dq_sem */
68 static cfs_list_t lustre_dquot_hash[NR_DQHASH];
69 static cfs_spinlock_t dquot_hash_lock = CFS_SPIN_LOCK_UNLOCKED;
70
71 cfs_mem_cache_t *lustre_dquot_cachep;
72
73 int lustre_dquot_init(void)
74 {
75         int i;
76         ENTRY;
77
78         LASSERT(lustre_dquot_cachep == NULL);
79         lustre_dquot_cachep = cfs_mem_cache_create("lustre_dquot_cache",
80                                                    sizeof(struct lustre_dquot),
81                                                    0, 0);
82         if (!lustre_dquot_cachep)
83                 return (-ENOMEM);
84
85         for (i = 0; i < NR_DQHASH; i++) {
86                 CFS_INIT_LIST_HEAD(lustre_dquot_hash + i);
87         }
88         RETURN(0);
89 }
90
91 void lustre_dquot_exit(void)
92 {
93         int i;
94         ENTRY;
95         /* FIXME cleanup work ?? */
96
97         for (i = 0; i < NR_DQHASH; i++) {
98                 LASSERT(cfs_list_empty(lustre_dquot_hash + i));
99         }
100         if (lustre_dquot_cachep) {
101                 int rc;
102                 rc = cfs_mem_cache_destroy(lustre_dquot_cachep);
103                 LASSERTF(rc == 0,"couldn't destroy lustre_dquot_cachep slab\n");
104                 lustre_dquot_cachep = NULL;
105         }
106         EXIT;
107 }
108
109 static inline int
110 dquot_hashfn(struct lustre_quota_info *info, unsigned int id, int type)
111              __attribute__((__const__));
112
113 static inline int
114 dquot_hashfn(struct lustre_quota_info *info, unsigned int id, int type)
115 {
116         unsigned long tmp = ((unsigned long)info >> L1_CACHE_SHIFT) ^ id;
117         tmp = (tmp * (MAXQUOTAS - type)) % NR_DQHASH;
118         return tmp;
119 }
120
121 /* caller must hold dquot_hash_lock */
122 static struct lustre_dquot *find_dquot(int hashent,
123                                        struct lustre_quota_info *lqi, qid_t id,
124                                        int type)
125 {
126         struct lustre_dquot *dquot;
127         ENTRY;
128
129         LASSERT_SPIN_LOCKED(&dquot_hash_lock);
130         cfs_list_for_each_entry(dquot, &lustre_dquot_hash[hashent], dq_hash) {
131                 if (dquot->dq_info == lqi &&
132                     dquot->dq_id == id && dquot->dq_type == type)
133                         RETURN(dquot);
134         }
135         RETURN(NULL);
136 }
137
138 static struct lustre_dquot *alloc_dquot(struct lustre_quota_info *lqi,
139                                         qid_t id, int type)
140 {
141         struct lustre_dquot *dquot = NULL;
142         ENTRY;
143
144         OBD_SLAB_ALLOC_PTR_GFP(dquot, lustre_dquot_cachep, CFS_ALLOC_IO);
145         if (dquot == NULL)
146                 RETURN(NULL);
147
148         CFS_INIT_LIST_HEAD(&dquot->dq_hash);
149         cfs_init_mutex_locked(&dquot->dq_sem);
150         dquot->dq_refcnt = 1;
151         dquot->dq_info = lqi;
152         dquot->dq_id = id;
153         dquot->dq_type = type;
154         dquot->dq_status = DQ_STATUS_AVAIL;
155
156         RETURN(dquot);
157 }
158
159 static void free_dquot(struct lustre_dquot *dquot)
160 {
161         OBD_SLAB_FREE(dquot, lustre_dquot_cachep, sizeof(*dquot));
162 }
163
164 static void insert_dquot_nolock(struct lustre_dquot *dquot)
165 {
166         cfs_list_t *head = lustre_dquot_hash +
167             dquot_hashfn(dquot->dq_info, dquot->dq_id, dquot->dq_type);
168         LASSERT(cfs_list_empty(&dquot->dq_hash));
169         cfs_list_add(&dquot->dq_hash, head);
170 }
171
172 static void remove_dquot_nolock(struct lustre_dquot *dquot)
173 {
174         LASSERT(!cfs_list_empty(&dquot->dq_hash));
175         cfs_list_del_init(&dquot->dq_hash);
176 }
177
178 static void lustre_dqput(struct lustre_dquot *dquot)
179 {
180         ENTRY;
181         cfs_spin_lock(&dquot_hash_lock);
182         LASSERT(dquot->dq_refcnt);
183         dquot->dq_refcnt--;
184         if (!dquot->dq_refcnt) {
185                 remove_dquot_nolock(dquot);
186                 free_dquot(dquot);
187         }
188         cfs_spin_unlock(&dquot_hash_lock);
189         EXIT;
190 }
191
192 static struct lustre_dquot *lustre_dqget(struct obd_device *obd,
193                                          struct lustre_quota_info *lqi,
194                                          qid_t id, int type)
195 {
196         unsigned int hashent = dquot_hashfn(lqi, id, type);
197         struct lustre_dquot *dquot, *empty;
198         ENTRY;
199
200         if ((empty = alloc_dquot(lqi, id, type)) == NULL)
201                 RETURN(ERR_PTR(-ENOMEM));
202
203         cfs_spin_lock(&dquot_hash_lock);
204         if ((dquot = find_dquot(hashent, lqi, id, type)) != NULL) {
205                 dquot->dq_refcnt++;
206                 cfs_spin_unlock(&dquot_hash_lock);
207                 free_dquot(empty);
208         } else {
209                 int rc;
210
211                 dquot = empty;
212                 insert_dquot_nolock(dquot);
213                 cfs_spin_unlock(&dquot_hash_lock);
214
215                 rc = fsfilt_dquot(obd, dquot, QFILE_RD_DQUOT);
216                 cfs_up(&dquot->dq_sem);
217                 if (rc) {
218                         CERROR("can't read dquot from admin quotafile! "
219                                "(rc:%d)\n", rc);
220                         lustre_dqput(dquot);
221                         RETURN(ERR_PTR(rc));
222                 }
223
224         }
225
226         LASSERT(dquot);
227         RETURN(dquot);
228 }
229
230 static void init_oqaq(struct quota_adjust_qunit *oqaq,
231                       struct lustre_quota_ctxt *qctxt,
232                       qid_t id, int type)
233 {
234         struct lustre_qunit_size *lqs = NULL;
235
236         oqaq->qaq_id = id;
237         oqaq->qaq_flags = type;
238         lqs = quota_search_lqs(LQS_KEY(type, id), qctxt, 0);
239         if (lqs && !IS_ERR(lqs)) {
240                 cfs_spin_lock(&lqs->lqs_lock);
241                 oqaq->qaq_bunit_sz = lqs->lqs_bunit_sz;
242                 oqaq->qaq_iunit_sz = lqs->lqs_iunit_sz;
243                 oqaq->qaq_flags    = lqs->lqs_flags;
244                 cfs_spin_unlock(&lqs->lqs_lock);
245                 lqs_putref(lqs);
246         } else {
247                 CDEBUG(D_QUOTA, "Can't find the lustre qunit size!\n");
248                 oqaq->qaq_bunit_sz = qctxt->lqc_bunit_sz;
249                 oqaq->qaq_iunit_sz = qctxt->lqc_iunit_sz;
250         }
251 }
252
253 int dqacq_adjust_qunit_sz(struct obd_device *obd, qid_t id, int type,
254                           __u32 is_blk)
255 {
256         struct mds_obd *mds = &obd->u.mds;
257         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
258         __u32 ost_num = mds->mds_lov_objid_count, mdt_num = 1;
259         struct quota_adjust_qunit *oqaq = NULL;
260         unsigned int qid[MAXQUOTAS] = { 0, 0 };
261         struct lustre_quota_info *info = &mds->mds_quota_info;
262         struct lustre_dquot *dquot = NULL;
263         int adjust_res = 0;
264         int rc = 0;
265         ENTRY;
266
267         LASSERT(mds);
268         dquot = lustre_dqget(obd, info, id, type);
269         if (IS_ERR(dquot))
270                 RETURN(PTR_ERR(dquot));
271
272         OBD_ALLOC_PTR(oqaq);
273         if (!oqaq)
274                 GOTO(out, rc = -ENOMEM);
275
276         cfs_down(&dquot->dq_sem);
277         init_oqaq(oqaq, qctxt, id, type);
278
279         rc = dquot_create_oqaq(qctxt, dquot, ost_num, mdt_num,
280                                is_blk ? LQUOTA_FLAGS_ADJBLK :
281                                LQUOTA_FLAGS_ADJINO, oqaq);
282
283         if (rc < 0) {
284                 CERROR("create oqaq failed! (rc:%d)\n", rc);
285                 GOTO(out_sem, rc);
286         }
287         QAQ_DEBUG(oqaq, "show oqaq.\n")
288
289         if (!QAQ_IS_ADJBLK(oqaq) && !QAQ_IS_ADJINO(oqaq))
290                 GOTO(out_sem, rc);
291
292         /* adjust the mds slave qunit size */
293         adjust_res = quota_adjust_slave_lqs(oqaq, qctxt);
294         if (adjust_res <= 0) {
295                 if (adjust_res < 0) {
296                         rc = adjust_res;
297                         CERROR("adjust mds slave's qunit size failed! "
298                                "(rc:%d)\n", rc);
299                 } else {
300                         CDEBUG(D_QUOTA, "qunit doesn't need to be adjusted.\n");
301                 }
302                 GOTO(out_sem, rc);
303         }
304
305         if (type)
306                 qid[GRPQUOTA] = dquot->dq_id;
307         else
308                 qid[USRQUOTA] = dquot->dq_id;
309
310         cfs_up(&dquot->dq_sem);
311
312         rc = qctxt_adjust_qunit(obd, qctxt, qid, is_blk, 0, NULL);
313         if (rc == -EDQUOT || rc == -EBUSY) {
314                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
315                 rc = 0;
316         }
317         if (rc) {
318                 CERROR("%s: mds fail to adjust file quota! (rc:%d)\n",
319                        obd->obd_name, rc);
320                 GOTO(out, rc);
321         }
322
323         /* only when block qunit is reduced, boardcast to osts */
324         if ((adjust_res & LQS_BLK_DECREASE) && QAQ_IS_ADJBLK(oqaq))
325                 rc = obd_quota_adjust_qunit(mds->mds_osc_exp, oqaq, qctxt);
326
327 out:
328         lustre_dqput(dquot);
329         if (oqaq)
330                 OBD_FREE_PTR(oqaq);
331
332         RETURN(rc);
333 out_sem:
334         cfs_up(&dquot->dq_sem);
335         goto out;
336 }
337
338 int dqacq_handler(struct obd_device *obd, struct qunit_data *qdata, int opc)
339 {
340         struct mds_obd *mds = &obd->u.mds;
341         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
342         struct lustre_quota_info *info = &mds->mds_quota_info;
343         struct lustre_dquot *dquot = NULL;
344         __u64 *usage = NULL;
345         __u64 hlimit = 0, slimit = 0;
346         time_t *time = NULL;
347         unsigned int grace = 0;
348         struct lustre_qunit_size *lqs = NULL;
349         int rc = 0;
350         ENTRY;
351
352         if (OBD_FAIL_CHECK(OBD_FAIL_OBD_DQACQ))
353                 RETURN(-EIO);
354
355         dquot = lustre_dqget(obd, info, qdata->qd_id, QDATA_IS_GRP(qdata));
356         if (IS_ERR(dquot))
357                 RETURN(PTR_ERR(dquot));
358
359         DQUOT_DEBUG(dquot, "get dquot in dqacq_handler\n");
360         QINFO_DEBUG(dquot->dq_info, "get dquot in dqadq_handler\n");
361
362         cfs_down(&mds->mds_qonoff_sem);
363         cfs_down(&dquot->dq_sem);
364
365         if (dquot->dq_status & DQ_STATUS_RECOVERY) {
366                 DQUOT_DEBUG(dquot, "this dquot is under recovering.\n");
367                 GOTO(out, rc = -EBUSY);
368         }
369
370         if (QDATA_IS_BLK(qdata)) {
371                 grace = info->qi_info[QDATA_IS_GRP(qdata)].dqi_bgrace;
372                 usage = &dquot->dq_dqb.dqb_curspace;
373                 hlimit = dquot->dq_dqb.dqb_bhardlimit;
374                 slimit = dquot->dq_dqb.dqb_bsoftlimit;
375                 time = &dquot->dq_dqb.dqb_btime;
376         } else {
377                 grace = info->qi_info[QDATA_IS_GRP(qdata)].dqi_igrace;
378                 usage = (__u64 *) & dquot->dq_dqb.dqb_curinodes;
379                 hlimit = dquot->dq_dqb.dqb_ihardlimit;
380                 slimit = dquot->dq_dqb.dqb_isoftlimit;
381                 time = &dquot->dq_dqb.dqb_itime;
382         }
383
384         /* if the quota limit in admin quotafile is zero, we just inform
385          * slave to clear quota limit with zero qd_count */
386         if (hlimit == 0 && slimit == 0) {
387                 qdata->qd_count = 0;
388                 GOTO(out, rc);
389         }
390
391         switch (opc) {
392         case QUOTA_DQACQ:
393                 if (hlimit &&
394                     QUSG(*usage + qdata->qd_count, QDATA_IS_BLK(qdata)) > hlimit)
395                 {
396                         if (QDATA_IS_CHANGE_QS(qdata) &&
397                             QUSG(*usage, QDATA_IS_BLK(qdata)) < hlimit)
398                                 qdata->qd_count = (hlimit -
399                                         QUSG(*usage, QDATA_IS_BLK(qdata)))
400                                         * (QDATA_IS_BLK(qdata) ?
401                                            QUOTABLOCK_SIZE : 1);
402                         else
403                                 GOTO(out, rc = -EDQUOT);
404                 }
405
406                 if (slimit &&
407                     QUSG(*usage + qdata->qd_count, QDATA_IS_BLK(qdata)) > slimit) {
408                         if (*time && cfs_time_current_sec() >= *time)
409                                 GOTO(out, rc = -EDQUOT);
410                         else if (!*time)
411                                 *time = cfs_time_current_sec() + grace;
412                 }
413
414                 *usage += qdata->qd_count;
415                 break;
416         case QUOTA_DQREL:
417                 /* The usage in administrative file might be incorrect before
418                  * recovery done */
419                 if (*usage - qdata->qd_count < 0)
420                         *usage = 0;
421                 else
422                         *usage -= qdata->qd_count;
423
424                 /* (usage <= soft limit) but not (usage < soft limit) */
425                 if (!slimit || QUSG(*usage, QDATA_IS_BLK(qdata)) <= slimit)
426                         *time = 0;
427                 break;
428         default:
429                 LBUG();
430         }
431
432         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
433         EXIT;
434 out:
435         cfs_up(&dquot->dq_sem);
436         cfs_up(&mds->mds_qonoff_sem);
437         lustre_dqput(dquot);
438         if (rc != -EDQUOT)
439                 dqacq_adjust_qunit_sz(obd, qdata->qd_id, QDATA_IS_GRP(qdata),
440                                       QDATA_IS_BLK(qdata));
441
442         lqs = quota_search_lqs(LQS_KEY(QDATA_IS_GRP(qdata), qdata->qd_id),
443                                qctxt, 0);
444         if (lqs == NULL || IS_ERR(lqs)) {
445                 CDEBUG(D_INFO, "Can't find the lustre qunit size!\n");
446                 qdata->qd_qunit  = QDATA_IS_BLK(qdata) ? qctxt->lqc_bunit_sz :
447                                                          qctxt->lqc_iunit_sz;
448         } else {
449                 cfs_spin_lock(&lqs->lqs_lock);
450                 qdata->qd_qunit  = QDATA_IS_BLK(qdata) ? lqs->lqs_bunit_sz :
451                                                          lqs->lqs_iunit_sz;
452                 cfs_spin_unlock(&lqs->lqs_lock);
453         }
454
455         if (QDATA_IS_BLK(qdata))
456                 QDATA_SET_ADJBLK(qdata);
457         else
458                 QDATA_SET_ADJINO(qdata);
459
460         QDATA_DEBUG(qdata, "alloc/release qunit in dqacq_handler\n");
461         if (lqs)
462                 lqs_putref(lqs);
463
464         return rc;
465 }
466
467 int mds_quota_adjust(struct obd_device *obd, const unsigned int qcids[],
468                      const unsigned int qpids[], int rc, int opc)
469 {
470         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
471         int rc2 = 0;
472         ENTRY;
473
474         if (rc && rc != -EDQUOT && rc != ENOLCK)
475                 RETURN(0);
476
477         switch (opc) {
478         case FSFILT_OP_SETATTR:
479                 /* release file quota on original owner */
480                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 0, 0, NULL);
481                 /* release block quota on original owner */
482                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
483                 /* acquire file quota on current owner */
484                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
485                 /* acquire block quota on current owner */
486                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
487                 break;
488         case FSFILT_OP_UNLINK_PARTIAL_CHILD:
489                 /* release file quota on child */
490                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
491                 /* rlease block quota on child */
492                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
493                 break;
494         case FSFILT_OP_CREATE_PARTIAL_CHILD:
495                 /* acquire file quota on child */
496                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
497                 /* acquire block quota on child */
498                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
499                 break;
500         case FSFILT_OP_LINK:
501                 /* acquire block quota on parent */
502                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
503                 break;
504         case FSFILT_OP_UNLINK:
505                 /* release block quota on parent */
506                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
507                 /* release file quota on child */
508                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
509                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
510                         /* release block quota on child */
511                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0,
512                                                   NULL);
513                 break;
514         case FSFILT_OP_UNLINK_PARTIAL_PARENT:
515                 /* release block quota on parent */
516                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
517                 break;
518         case FSFILT_OP_CREATE:
519                 /* acquire block quota on parent */
520                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
521                 /* acquire file quota on child */
522                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 0, 0, NULL);
523                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
524                         /* acquire block quota on child */
525                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0,
526                                                   NULL);
527                 break;
528         default:
529                 LBUG();
530                 break;
531         }
532
533         if (rc2)
534                 CDEBUG(D_QUOTA,
535                        "mds adjust qunit %ssuccessfully! (opc:%d rc:%d)\n",
536                        rc2 == QUOTA_REQ_RETURNED ? "" : "un", opc, rc2);
537         RETURN(0);
538 }
539
540 int filter_quota_adjust(struct obd_device *obd, const unsigned int qcids[],
541                         const unsigned int qpids[], int rc, int opc)
542 {
543         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
544         int rc2 = 0;
545         ENTRY;
546
547         if (rc && rc != -EDQUOT)
548                 RETURN(0);
549
550         switch (opc) {
551         case FSFILT_OP_SETATTR:
552                 /* acquire/release block quota on original & current owner */
553                 rc = qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
554                 rc2 = qctxt_adjust_qunit(obd, qctxt, qpids, 1, 0, NULL);
555                 break;
556         case FSFILT_OP_UNLINK:
557                 /* release block quota on this owner */
558         case FSFILT_OP_CREATE: /* XXX for write operation on obdfilter */
559                 /* acquire block quota on this owner */
560                 rc = qctxt_adjust_qunit(obd, qctxt, qcids, 1, 0, NULL);
561                 break;
562         default:
563                 LBUG();
564                 break;
565         }
566
567         if (rc || rc2) {
568                 if (!rc)
569                         rc = rc2;
570                 CDEBUG(D_QUOTA,
571                        "filter adjust qunit %ssuccessfully! (opc:%d rc%d)\n",
572                        rc == QUOTA_REQ_RETURNED ? "" : "un", opc, rc);
573         }
574
575         RETURN(0);
576 }
577
578 static const char prefix[] = "OBJECTS/";
579
580 int mds_quota_invalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
581 {
582         struct mds_obd *mds = &obd->u.mds;
583         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
584         struct obd_device_target *obt = &obd->u.obt;
585         int rc = 0, i, rc1 = 0;
586         char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
587         char name[64];
588         struct lvfs_run_ctxt saved;
589         ENTRY;
590
591         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
592
593         if (oqctl->qc_type != USRQUOTA &&
594             oqctl->qc_type != GRPQUOTA &&
595             oqctl->qc_type != UGQUOTA)
596                 RETURN(-EINVAL);
597
598         cfs_down(&obt->obt_quotachecking);
599         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
600         cfs_down(&mds->mds_qonoff_sem);
601
602         for (i = 0; i < MAXQUOTAS; i++) {
603                 struct file *fp;
604
605                 if (!Q_TYPESET(oqctl, i))
606                         continue;
607
608                 /* quota file has been opened ? */
609                 if (qinfo->qi_files[i]) {
610                         CWARN("quota[%d] is on yet\n", i);
611                         rc1 = -EBUSY;
612                         continue;
613                 }
614
615                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
616                 sprintf(name, "%s%s", prefix, quotafile[i]);
617
618                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
619                 if (IS_ERR(fp)) {
620                         rc = PTR_ERR(fp);
621                         CERROR("%s: error invalidating admin quotafile %s (rc:%d)\n",
622                                obd->obd_name, name, rc);
623                 }
624                 else
625                         filp_close(fp, 0);
626         }
627
628         cfs_up(&mds->mds_qonoff_sem);
629         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
630         cfs_up(&obt->obt_quotachecking);
631         RETURN(rc ? : rc1);
632 }
633
634 int mds_quota_finvalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
635 {
636         struct mds_obd *mds = &obd->u.mds;
637         struct obd_device_target *obt = &obd->u.obt;
638         int rc;
639         struct lvfs_run_ctxt saved;
640         ENTRY;
641
642         if (oqctl->qc_type != USRQUOTA &&
643             oqctl->qc_type != GRPQUOTA &&
644             oqctl->qc_type != UGQUOTA)
645                 RETURN(-EINVAL);
646
647         cfs_down(&obt->obt_quotachecking);
648         if (obt->obt_qctxt.lqc_flags & UGQUOTA2LQC(oqctl->qc_type))
649                 GOTO(out, rc = -EBUSY);
650         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
651         cfs_down(&mds->mds_qonoff_sem);
652
653         oqctl->qc_cmd = Q_FINVALIDATE;
654         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
655         if (!rc)
656                 rc = obd_quotactl(mds->mds_osc_exp, oqctl);
657
658         cfs_up(&mds->mds_qonoff_sem);
659         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
660 out:
661         cfs_up(&obt->obt_quotachecking);
662         RETURN(rc);
663 }
664
665 int init_admin_quotafiles(struct obd_device *obd, struct obd_quotactl *oqctl)
666 {
667         struct mds_obd *mds = &obd->u.mds;
668         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
669         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
670         struct lvfs_run_ctxt saved;
671         char name[64];
672         int i, rc = 0;
673         ENTRY;
674
675         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
676
677         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
678
679         cfs_down(&mds->mds_qonoff_sem);
680
681         for (i = 0; i < MAXQUOTAS && !rc; i++) {
682                 struct file *fp;
683
684                 if (!Q_TYPESET(oqctl, i))
685                         continue;
686
687                 /* quota file has been opened ? */
688                 if (qinfo->qi_files[i]) {
689                         CWARN("init %s admin quotafile while quota on.\n",
690                               i == USRQUOTA ? "user" : "group");
691                         continue;
692                 }
693
694                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
695                 sprintf(name, "%s%s", prefix, quotafile[i]);
696
697                 /* check if quota file exists and is correct */
698                 fp = filp_open(name, O_RDONLY, 0);
699                 if (!IS_ERR(fp)) {
700                         /* irregular file is not the right place for quota */
701                         if (!S_ISREG(fp->f_dentry->d_inode->i_mode)) {
702                                 CERROR("admin quota file %s is not "
703                                        "regular!", name);
704                                 filp_close(fp, 0);
705                                 rc = -EINVAL;
706                                 break;
707                         }
708                         qinfo->qi_files[i] = fp;
709                         rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
710                         qinfo->qi_files[i] = 0;
711                         filp_close(fp, 0);
712                 }
713                 else
714                         rc = PTR_ERR(fp);
715
716                 if (!rc)
717                         continue;
718
719                 /* -EINVAL may be returned by quotainfo for bad quota file */
720                 if (rc != -ENOENT && rc != -EINVAL) {
721                         CERROR("%s: error opening old quota file %s (%d)\n",
722                                obd->obd_name, name, rc);
723                         break;
724                 }
725
726                 CDEBUG(D_INFO, "%s new quota file %s\n", name,
727                        rc == -ENOENT ? "creating" : "overwriting");
728
729                 /* create quota file overwriting old if needed */
730                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
731                 if (IS_ERR(fp)) {
732                         rc = PTR_ERR(fp);
733                         CERROR("%s: error creating admin quotafile %s (rc:%d)\n",
734                                obd->obd_name, name, rc);
735                         break;
736                 }
737
738                 qinfo->qi_files[i] = fp;
739
740                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_INIT_INFO);
741                 if (rc)
742                         CERROR("error init %s admin quotafile! (rc:%d)\n",
743                                i == USRQUOTA ? "user" : "group", rc);
744
745                 filp_close(fp, 0);
746                 qinfo->qi_files[i] = NULL;
747         }
748         cfs_up(&mds->mds_qonoff_sem);
749
750         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
751         RETURN(rc);
752 }
753
754 static int close_quota_files(struct obd_quotactl *oqctl,
755                              struct lustre_quota_info *qinfo)
756 {
757         int i, rc = 0;
758         ENTRY;
759
760         for (i = 0; i < MAXQUOTAS; i++) {
761                 if (!Q_TYPESET(oqctl, i))
762                         continue;
763                 if (qinfo->qi_files[i] == NULL) {
764                         CWARN("quota[%d] is off already\n", i);
765                         rc = -EALREADY;
766                         continue;
767                 }
768                 filp_close(qinfo->qi_files[i], 0);
769                 qinfo->qi_files[i] = NULL;
770         }
771         RETURN(rc);
772 }
773
774 int mds_admin_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
775 {
776         struct mds_obd *mds = &obd->u.mds;
777         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
778         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
779         char name[64];
780         int i, rc = 0, rc1 = 0;
781         ENTRY;
782
783         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
784
785         /* open admin quota files and read quotafile info */
786         for (i = 0; i < MAXQUOTAS; i++) {
787                 struct file *fp;
788
789                 if (!Q_TYPESET(oqctl, i) || qinfo->qi_files[i] != NULL)
790                         continue;
791
792                 LASSERT(strlen(quotafile[i])
793                         + sizeof(prefix) <= sizeof(name));
794                 sprintf(name, "%s%s", prefix, quotafile[i]);
795                 fp = filp_open(name, O_RDWR, 0);
796                 if (IS_ERR(fp) || !S_ISREG(fp->f_dentry->d_inode->i_mode)) {
797                         rc = IS_ERR(fp) ? PTR_ERR(fp) : -EINVAL;
798                         CERROR("error open/create %s! (rc:%d)\n", name, rc);
799                         break;
800                 }
801                 qinfo->qi_files[i] = fp;
802
803                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
804                 if (rc) {
805                         CERROR("invalid quota file %s! (rc:%d)\n", name, rc);
806                         break;
807                 }
808
809                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_RD_INFO);
810                 if (rc) {
811                         CERROR("error read quotainfo of %s! (rc:%d)\n", name,
812                                rc);
813                         break;
814                 }
815         }
816
817         if (rc && rc1 != -EALREADY)
818                 close_quota_files(oqctl, qinfo);
819
820         RETURN(rc ? : rc1);
821 }
822
823 int mds_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
824 {
825         int rc;
826         ENTRY;
827
828         if (oqctl->qc_type != USRQUOTA &&
829             oqctl->qc_type != GRPQUOTA &&
830             oqctl->qc_type != UGQUOTA)
831                 RETURN(-EINVAL);
832
833         rc = generic_quota_on(obd, oqctl, 1);
834
835         RETURN(rc);
836 }
837
838
839 int mds_admin_quota_off(struct obd_device *obd,
840                         struct obd_quotactl *oqctl)
841 {
842         struct mds_obd *mds = &obd->u.mds;
843         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
844         int rc;
845         ENTRY;
846
847         /* close admin quota files */
848         rc = close_quota_files(oqctl, qinfo);
849         RETURN(rc);
850 }
851
852
853 /* with obt->obt_quotachecking held */
854 int do_mds_quota_off(struct obd_device *obd, struct obd_quotactl *oqctl)
855 {
856         struct mds_obd *mds = &obd->u.mds;
857         struct obd_device_target *obt = &obd->u.obt;
858         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
859         struct lvfs_run_ctxt saved;
860         int rc = 0, rc1 = 0, rc2 = 0;
861         ENTRY;
862
863         LASSERT_SEM_LOCKED(&obt->obt_quotachecking);
864
865         if (oqctl->qc_type != USRQUOTA &&
866             oqctl->qc_type != GRPQUOTA &&
867             oqctl->qc_type != UGQUOTA)
868                 RETURN(-EINVAL);
869
870         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
871         cfs_down(&mds->mds_qonoff_sem);
872         /* close admin quota files */
873         rc2 = mds_admin_quota_off(obd, oqctl);
874         if (rc2 && rc2 != -EALREADY) {
875                 CWARN("mds quota[%d] is failed to be off for %d\n", oqctl->qc_type, rc2);
876                 GOTO(out, rc2);
877         }
878
879         rc1 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
880         if (!rc1) {
881                 obt->obt_qctxt.lqc_flags &= ~UGQUOTA2LQC(oqctl->qc_type);
882         } else if (quota_is_off(qctxt, oqctl)) {
883                 CWARN("mds local quota[%d] is off already\n", oqctl->qc_type);
884                 rc1 = -EALREADY;
885         } else {
886                 if (rc2 != -EALREADY) {
887                         CWARN("mds local quota[%d] is failed to be off for %d\n",
888                               oqctl->qc_type, rc1);
889                         oqctl->qc_cmd = Q_QUOTAON;
890                         mds_admin_quota_on(obd, oqctl);
891                         oqctl->qc_cmd = Q_QUOTAOFF;
892                 }
893                 GOTO(out, rc1);
894         }
895
896         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
897         if (rc && rc != -EALREADY) {
898                 CWARN("mds remote quota[%d] is failed to be off for %d\n",
899                       oqctl->qc_type, rc);
900                 oqctl->qc_cmd = Q_QUOTAON;
901                 if (rc2 != -EALREADY)
902                         mds_admin_quota_on(obd, oqctl);
903                 if (rc1 != -EALREADY) {
904                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
905                         qctxt->lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
906                 }
907                 oqctl->qc_cmd = Q_QUOTAOFF;
908         }
909         EXIT;
910
911 out:
912         cfs_up(&mds->mds_qonoff_sem);
913         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
914         return rc ? : (rc1 ? : rc2);
915 }
916
917 int mds_quota_off(struct obd_device *obd, struct obd_quotactl *oqctl)
918 {
919         struct obd_device_target *obt = &obd->u.obt;
920         int rc;
921         ENTRY;
922
923         cfs_down(&obt->obt_quotachecking);
924         rc = do_mds_quota_off(obd, oqctl);
925         cfs_up(&obt->obt_quotachecking);
926         RETURN(rc);
927 }
928
929 int mds_set_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
930 {
931         struct mds_obd *mds = &obd->u.mds;
932         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
933         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
934         int rc;
935         ENTRY;
936
937         if (oqctl->qc_type != USRQUOTA &&
938             oqctl->qc_type != GRPQUOTA)
939                 RETURN(-EINVAL);
940
941         cfs_down(&mds->mds_qonoff_sem);
942         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
943                 CWARN("quota[%u] is off\n", oqctl->qc_type);
944                 GOTO(out, rc = -ESRCH);
945         }
946
947         qinfo->qi_info[oqctl->qc_type].dqi_bgrace = dqinfo->dqi_bgrace;
948         qinfo->qi_info[oqctl->qc_type].dqi_igrace = dqinfo->dqi_igrace;
949         qinfo->qi_info[oqctl->qc_type].dqi_flags = dqinfo->dqi_flags;
950
951         rc = fsfilt_quotainfo(obd, qinfo, oqctl->qc_type, QFILE_WR_INFO);
952         EXIT;
953
954 out:
955         cfs_up(&mds->mds_qonoff_sem);
956         return rc;
957 }
958
959 int mds_get_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
960 {
961         struct mds_obd *mds = &obd->u.mds;
962         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
963         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
964         int rc = 0;
965         ENTRY;
966
967         if (oqctl->qc_type != USRQUOTA &&
968             oqctl->qc_type != GRPQUOTA)
969                 RETURN(-EINVAL);
970
971         cfs_down(&mds->mds_qonoff_sem);
972         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
973                 CWARN("quota[%u] is off\n", oqctl->qc_type);
974                 GOTO(out, rc = -ESRCH);
975         }
976
977         dqinfo->dqi_bgrace = qinfo->qi_info[oqctl->qc_type].dqi_bgrace;
978         dqinfo->dqi_igrace = qinfo->qi_info[oqctl->qc_type].dqi_igrace;
979         dqinfo->dqi_flags = qinfo->qi_info[oqctl->qc_type].dqi_flags;
980         EXIT;
981
982 out:
983         cfs_up(&mds->mds_qonoff_sem);
984         return rc;
985 }
986
987 int dquot_create_oqaq(struct lustre_quota_ctxt *qctxt,
988                       struct lustre_dquot *dquot, __u32 ost_num, __u32 mdt_num,
989                       int type, struct quota_adjust_qunit *oqaq)
990 {
991         __u64 bunit_curr_o, iunit_curr_o;
992         unsigned long shrink_qunit_limit = qctxt->lqc_cqs_boundary_factor;
993         unsigned long cqs_factor = qctxt->lqc_cqs_qs_factor;
994         __u64 blimit = dquot->dq_dqb.dqb_bhardlimit ?
995                 dquot->dq_dqb.dqb_bhardlimit : dquot->dq_dqb.dqb_bsoftlimit;
996         __u64 ilimit = dquot->dq_dqb.dqb_ihardlimit ?
997                 dquot->dq_dqb.dqb_ihardlimit : dquot->dq_dqb.dqb_isoftlimit;
998         int rc = 0;
999         ENTRY;
1000
1001         if (!dquot || !oqaq)
1002                 RETURN(-EINVAL);
1003         LASSERT_SEM_LOCKED(&dquot->dq_sem);
1004         LASSERT(oqaq->qaq_iunit_sz);
1005         LASSERT(oqaq->qaq_bunit_sz);
1006
1007         /* don't change qunit size */
1008         if (!qctxt->lqc_switch_qs)
1009                 RETURN(rc);
1010
1011         bunit_curr_o = oqaq->qaq_bunit_sz;
1012         iunit_curr_o = oqaq->qaq_iunit_sz;
1013
1014         if (dquot->dq_type == GRPQUOTA)
1015                 QAQ_SET_GRP(oqaq);
1016
1017         if ((type & LQUOTA_FLAGS_ADJBLK) && blimit) {
1018                 __u64 b_limitation =
1019                         oqaq->qaq_bunit_sz * (ost_num + 1) * shrink_qunit_limit;
1020                 /* enlarge block qunit size */
1021                 while (blimit >
1022                        QUSG(dquot->dq_dqb.dqb_curspace + 2 * b_limitation, 1)) {
1023                         oqaq->qaq_bunit_sz =
1024                                 QUSG(oqaq->qaq_bunit_sz * cqs_factor, 1)
1025                                 << QUOTABLOCK_BITS;
1026                         b_limitation = oqaq->qaq_bunit_sz * (ost_num + 1) *
1027                                 shrink_qunit_limit;
1028                 }
1029
1030                 if (oqaq->qaq_bunit_sz > qctxt->lqc_bunit_sz)
1031                         oqaq->qaq_bunit_sz = qctxt->lqc_bunit_sz;
1032
1033                 /* shrink block qunit size */
1034                 while (blimit <
1035                        QUSG(dquot->dq_dqb.dqb_curspace + b_limitation, 1)) {
1036                         do_div(oqaq->qaq_bunit_sz , cqs_factor);
1037                         oqaq->qaq_bunit_sz = QUSG(oqaq->qaq_bunit_sz, 1) <<
1038                                 QUOTABLOCK_BITS;
1039                         b_limitation = oqaq->qaq_bunit_sz * (ost_num + 1) *
1040                                 shrink_qunit_limit;
1041                         if (oqaq->qaq_bunit_sz <  qctxt->lqc_cqs_least_bunit)
1042                                 break;
1043                 }
1044
1045                 if (oqaq->qaq_bunit_sz < qctxt->lqc_cqs_least_bunit)
1046                         oqaq->qaq_bunit_sz = qctxt->lqc_cqs_least_bunit;
1047
1048                 if (bunit_curr_o != oqaq->qaq_bunit_sz)
1049                         QAQ_SET_ADJBLK(oqaq);
1050
1051         }
1052
1053         if ((type & LQUOTA_FLAGS_ADJINO) && ilimit) {
1054                 __u64 i_limitation =
1055                         oqaq->qaq_iunit_sz * mdt_num * shrink_qunit_limit;
1056                 /* enlarge file qunit size */
1057                 while (ilimit > dquot->dq_dqb.dqb_curinodes
1058                        + 2 * i_limitation) {
1059                         oqaq->qaq_iunit_sz = oqaq->qaq_iunit_sz * cqs_factor;
1060                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1061                                 shrink_qunit_limit;
1062                 }
1063
1064                 if (oqaq->qaq_iunit_sz > qctxt->lqc_iunit_sz)
1065                         oqaq->qaq_iunit_sz = qctxt->lqc_iunit_sz;
1066
1067                 /* shrink file qunit size */
1068                 while (ilimit < dquot->dq_dqb.dqb_curinodes
1069                        + i_limitation) {
1070                         do_div(oqaq->qaq_iunit_sz, cqs_factor);
1071                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1072                                        shrink_qunit_limit;
1073                         if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1074                                 break;
1075                 }
1076
1077                 if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1078                         oqaq->qaq_iunit_sz = qctxt->lqc_cqs_least_iunit;
1079
1080                 if (iunit_curr_o != oqaq->qaq_iunit_sz)
1081                         QAQ_SET_ADJINO(oqaq);
1082
1083         }
1084
1085         QAQ_DEBUG(oqaq, "the oqaq computed\n");
1086
1087         RETURN(rc);
1088 }
1089
1090 static int mds_init_slave_ilimits(struct obd_device *obd,
1091                                   struct obd_quotactl *oqctl, int set)
1092 {
1093         /* XXX: for file limits only adjust local now */
1094         struct obd_device_target *obt = &obd->u.obt;
1095         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1096         unsigned int id[MAXQUOTAS] = { 0, 0 };
1097         struct obd_quotactl *ioqc = NULL;
1098         struct lustre_qunit_size *lqs;
1099         int flag;
1100         int rc;
1101         ENTRY;
1102
1103         /* if we are going to set zero limit, needn't init slaves */
1104         if (!oqctl->qc_dqblk.dqb_ihardlimit && !oqctl->qc_dqblk.dqb_isoftlimit &&
1105             !set)
1106                 RETURN(0);
1107
1108         OBD_ALLOC_PTR(ioqc);
1109         if (!ioqc)
1110                 RETURN(-ENOMEM);
1111
1112         flag = oqctl->qc_dqblk.dqb_ihardlimit ||
1113                oqctl->qc_dqblk.dqb_isoftlimit || !set;
1114         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1115         ioqc->qc_id = oqctl->qc_id;
1116         ioqc->qc_type = oqctl->qc_type;
1117         ioqc->qc_dqblk.dqb_valid = QIF_ILIMITS;
1118         ioqc->qc_dqblk.dqb_ihardlimit = flag ? MIN_QLIMIT : 0;
1119
1120         /* build lqs for mds */
1121         lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
1122                                qctxt, flag ? 1 : 0);
1123         if (lqs && !IS_ERR(lqs)) {
1124                 if (flag)
1125                         lqs->lqs_flags |= QI_SET;
1126                 else
1127                         lqs->lqs_flags &= ~QI_SET;
1128                 lqs_putref(lqs);
1129         } else {
1130                 CERROR("fail to %s lqs for inode(%s id: %u)!\n",
1131                        flag ? "create" : "search",
1132                        oqctl->qc_type ? "group" : "user",
1133                        oqctl->qc_id);
1134                 GOTO(out, rc = PTR_ERR(lqs));
1135         }
1136
1137         /* set local limit to MIN_QLIMIT */
1138         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1139         if (rc)
1140                 GOTO(out, rc);
1141
1142         /* trigger local qunit pre-acquire */
1143         if (oqctl->qc_type == USRQUOTA)
1144                 id[USRQUOTA] = oqctl->qc_id;
1145         else
1146                 id[GRPQUOTA] = oqctl->qc_id;
1147
1148         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, id, 0, 0, NULL);
1149         if (rc == -EDQUOT || rc == -EBUSY) {
1150                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1151                 rc = 0;
1152         }
1153         if (rc) {
1154                 CDEBUG(D_QUOTA,"error mds adjust local file quota! (rc:%d)\n",
1155                        rc);
1156                 GOTO(out, rc);
1157         }
1158         /* FIXME initialize all slaves in CMD */
1159         EXIT;
1160 out:
1161         if (ioqc)
1162                 OBD_FREE_PTR(ioqc);
1163         return rc;
1164 }
1165
1166 static int mds_init_slave_blimits(struct obd_device *obd,
1167                                   struct obd_quotactl *oqctl, int set)
1168 {
1169         struct obd_device_target *obt = &obd->u.obt;
1170         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1171         struct mds_obd *mds = &obd->u.mds;
1172         struct obd_quotactl *ioqc;
1173         struct lustre_qunit_size *lqs;
1174         unsigned int id[MAXQUOTAS] = { 0, 0 };
1175         int rc;
1176         int flag;
1177         ENTRY;
1178
1179         /* if we are going to set zero limit, needn't init slaves */
1180         if (!oqctl->qc_dqblk.dqb_bhardlimit && !oqctl->qc_dqblk.dqb_bsoftlimit &&
1181             !set)
1182                 RETURN(0);
1183
1184         OBD_ALLOC_PTR(ioqc);
1185         if (!ioqc)
1186                 RETURN(-ENOMEM);
1187
1188         flag = oqctl->qc_dqblk.dqb_bhardlimit ||
1189                oqctl->qc_dqblk.dqb_bsoftlimit || !set;
1190         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1191         ioqc->qc_id = oqctl->qc_id;
1192         ioqc->qc_type = oqctl->qc_type;
1193         ioqc->qc_dqblk.dqb_valid = QIF_BLIMITS;
1194         ioqc->qc_dqblk.dqb_bhardlimit = flag ? MIN_QLIMIT : 0;
1195
1196         /* build lqs for mds */
1197         lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
1198                                qctxt, flag ? 1 : 0);
1199         if (lqs && !IS_ERR(lqs)) {
1200                 if (flag)
1201                         lqs->lqs_flags |= QB_SET;
1202                 else
1203                         lqs->lqs_flags &= ~QB_SET;
1204                 lqs_putref(lqs);
1205         } else {
1206                 CERROR("fail to %s lqs for block(%s id: %u)!\n",
1207                        flag ? "create" : "search",
1208                        oqctl->qc_type ? "group" : "user",
1209                        oqctl->qc_id);
1210                 GOTO(out, rc = PTR_ERR(lqs));
1211         }
1212
1213         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1214         if (rc)
1215                 GOTO(out, rc);
1216
1217         /* trigger local qunit pre-acquire */
1218         if (oqctl->qc_type == USRQUOTA)
1219                 id[USRQUOTA] = oqctl->qc_id;
1220         else
1221                 id[GRPQUOTA] = oqctl->qc_id;
1222
1223         /* initialize all slave's limit */
1224         rc = obd_quotactl(mds->mds_osc_exp, ioqc);
1225
1226         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, id, 1, 0, NULL);
1227         if (rc == -EDQUOT || rc == -EBUSY) {
1228                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1229                 rc = 0;
1230         }
1231         if (rc) {
1232                 CERROR("error mds adjust local block quota! (rc:%d)\n", rc);
1233                 GOTO(out, rc);
1234         }
1235
1236         EXIT;
1237 out:
1238         OBD_FREE_PTR(ioqc);
1239         return rc;
1240 }
1241
1242 static void adjust_lqs(struct obd_device *obd, struct quota_adjust_qunit *qaq)
1243 {
1244         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
1245         int rc = 0;
1246
1247         QAQ_SET_CREATE_LQS(qaq);
1248         /* adjust local lqs */
1249         rc = quota_adjust_slave_lqs(qaq, qctxt);
1250         if (rc < 0)
1251                 CERROR("adjust master's qunit size failed!(rc=%d)\n", rc);
1252
1253         /* adjust remote lqs */
1254         if (QAQ_IS_ADJBLK(qaq)) {
1255                 rc = obd_quota_adjust_qunit(obd->u.mds.mds_osc_exp, qaq, qctxt);
1256                 if (rc < 0)
1257                         CERROR("adjust slaves' qunit size failed!(rc=%d)\n", rc);
1258
1259         }
1260 }
1261
1262 int mds_set_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1263 {
1264         struct mds_obd *mds = &obd->u.mds;
1265         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
1266         struct obd_device *lov_obd = class_exp2obd(mds->mds_osc_exp);
1267         struct lov_obd *lov = &lov_obd->u.lov;
1268         struct quota_adjust_qunit *oqaq = NULL;
1269         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1270         __u64 ihardlimit, isoftlimit, bhardlimit, bsoftlimit;
1271         time_t btime, itime;
1272         struct lustre_dquot *dquot;
1273         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1274         /* orig_set means if quota was set before; now_set means we are
1275          * setting/cancelling quota */
1276         int orig_set, now_set;
1277         int rc, rc2 = 0, flag = 0;
1278         ENTRY;
1279
1280         if (oqctl->qc_type != USRQUOTA &&
1281             oqctl->qc_type != GRPQUOTA)
1282                 RETURN(-EINVAL);
1283
1284         OBD_ALLOC_PTR(oqaq);
1285         if (!oqaq)
1286                 RETURN(-ENOMEM);
1287         cfs_down(&mds->mds_qonoff_sem);
1288         init_oqaq(oqaq, qctxt, oqctl->qc_id, oqctl->qc_type);
1289
1290         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
1291                 CWARN("quota[%u] is off\n", oqctl->qc_type);
1292                 GOTO(out_sem, rc = -ESRCH);
1293         }
1294
1295         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1296         if (IS_ERR(dquot))
1297                 GOTO(out_sem, rc = PTR_ERR(dquot));
1298         DQUOT_DEBUG(dquot, "get dquot in mds_set_blk\n");
1299         QINFO_DEBUG(dquot->dq_info, "get dquot in mds_set_blk\n");
1300
1301         cfs_down(&dquot->dq_sem);
1302
1303         if (dquot->dq_status) {
1304                 cfs_up(&dquot->dq_sem);
1305                 lustre_dqput(dquot);
1306                 GOTO(out_sem, rc = -EBUSY);
1307         }
1308         dquot->dq_status |= DQ_STATUS_SET;
1309
1310         ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1311         isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1312         bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1313         bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1314         btime = dquot->dq_dqb.dqb_btime;
1315         itime = dquot->dq_dqb.dqb_itime;
1316
1317         if (dqblk->dqb_valid & QIF_BTIME)
1318                 dquot->dq_dqb.dqb_btime = dqblk->dqb_btime;
1319         if (dqblk->dqb_valid & QIF_ITIME)
1320                 dquot->dq_dqb.dqb_itime = dqblk->dqb_itime;
1321
1322         if (dqblk->dqb_valid & QIF_BLIMITS) {
1323                 dquot->dq_dqb.dqb_bhardlimit = dqblk->dqb_bhardlimit;
1324                 dquot->dq_dqb.dqb_bsoftlimit = dqblk->dqb_bsoftlimit;
1325                 /* clear usage (limit pool) */
1326                 if (!dquot->dq_dqb.dqb_bhardlimit &&
1327                     !dquot->dq_dqb.dqb_bsoftlimit)
1328                         dquot->dq_dqb.dqb_curspace = 0;
1329
1330                 /* clear grace time */
1331                 if (!dqblk->dqb_bsoftlimit ||
1332                     toqb(dquot->dq_dqb.dqb_curspace) <= dqblk->dqb_bsoftlimit)
1333                         dquot->dq_dqb.dqb_btime = 0;
1334                 /* set grace only if user hasn't provided his own */
1335                 else if (!(dqblk->dqb_valid & QIF_BTIME))
1336                         dquot->dq_dqb.dqb_btime = cfs_time_current_sec() +
1337                                 qinfo->qi_info[dquot->dq_type].dqi_bgrace;
1338
1339                 flag |= LQUOTA_FLAGS_ADJBLK;
1340         }
1341
1342         if (dqblk->dqb_valid & QIF_ILIMITS) {
1343                 dquot->dq_dqb.dqb_ihardlimit = dqblk->dqb_ihardlimit;
1344                 dquot->dq_dqb.dqb_isoftlimit = dqblk->dqb_isoftlimit;
1345                 /* clear usage (limit pool) */
1346                 if (!dquot->dq_dqb.dqb_ihardlimit &&
1347                     !dquot->dq_dqb.dqb_isoftlimit)
1348                         dquot->dq_dqb.dqb_curinodes = 0;
1349
1350                 if (!dqblk->dqb_isoftlimit ||
1351                     dquot->dq_dqb.dqb_curinodes <= dqblk->dqb_isoftlimit)
1352                         dquot->dq_dqb.dqb_itime = 0;
1353                 else if (!(dqblk->dqb_valid & QIF_ITIME))
1354                         dquot->dq_dqb.dqb_itime = cfs_time_current_sec() +
1355                                 qinfo->qi_info[dquot->dq_type].dqi_igrace;
1356
1357                 flag |= LQUOTA_FLAGS_ADJINO;
1358         }
1359         QAQ_DEBUG(oqaq, "before dquot_create_oqaq\n");
1360         rc = dquot_create_oqaq(qctxt, dquot, lov->desc.ld_tgt_count, 1,
1361                                flag, oqaq);
1362         QAQ_DEBUG(oqaq, "after dquot_create_oqaq\n");
1363         if (rc < 0)
1364                 CDEBUG(D_QUOTA, "adjust qunit size failed! (rc:%d)\n", rc);
1365
1366
1367         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1368
1369         cfs_up(&dquot->dq_sem);
1370
1371         if (rc) {
1372                 CERROR("set limit failed! (rc:%d)\n", rc);
1373                 goto out;
1374         }
1375
1376         cfs_up(&mds->mds_qonoff_sem);
1377
1378         adjust_lqs(obd, oqaq);
1379
1380         orig_set = ihardlimit || isoftlimit;
1381         now_set  = dqblk->dqb_ihardlimit || dqblk->dqb_isoftlimit;
1382         if (dqblk->dqb_valid & QIF_ILIMITS && orig_set != now_set) {
1383                 cfs_down(&dquot->dq_sem);
1384                 dquot->dq_dqb.dqb_curinodes = 0;
1385                 cfs_up(&dquot->dq_sem);
1386                 rc = mds_init_slave_ilimits(obd, oqctl, orig_set);
1387                 if (rc) {
1388                         CERROR("init slave ilimits failed! (rc:%d)\n", rc);
1389                         goto revoke_out;
1390                 }
1391         }
1392
1393         orig_set = bhardlimit || bsoftlimit;
1394         now_set  = dqblk->dqb_bhardlimit || dqblk->dqb_bsoftlimit;
1395         if (dqblk->dqb_valid & QIF_BLIMITS && orig_set != now_set) {
1396                 cfs_down(&dquot->dq_sem);
1397                 dquot->dq_dqb.dqb_curspace = 0;
1398                 cfs_up(&dquot->dq_sem);
1399                 rc = mds_init_slave_blimits(obd, oqctl, orig_set);
1400                 if (rc) {
1401                         CERROR("init slave blimits failed! (rc:%d)\n", rc);
1402                         goto revoke_out;
1403                 }
1404         }
1405
1406 revoke_out:
1407         cfs_down(&mds->mds_qonoff_sem);
1408         cfs_down(&dquot->dq_sem);
1409         if (rc) {
1410                 /* cancel previous setting */
1411                 dquot->dq_dqb.dqb_ihardlimit = ihardlimit;
1412                 dquot->dq_dqb.dqb_isoftlimit = isoftlimit;
1413                 dquot->dq_dqb.dqb_bhardlimit = bhardlimit;
1414                 dquot->dq_dqb.dqb_bsoftlimit = bsoftlimit;
1415                 dquot->dq_dqb.dqb_btime = btime;
1416                 dquot->dq_dqb.dqb_itime = itime;
1417         }
1418         rc2 = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1419         cfs_up(&dquot->dq_sem);
1420
1421 out:
1422         cfs_down(&dquot->dq_sem);
1423         dquot->dq_status &= ~DQ_STATUS_SET;
1424         cfs_up(&dquot->dq_sem);
1425         lustre_dqput(dquot);
1426         EXIT;
1427 out_sem:
1428         cfs_up(&mds->mds_qonoff_sem);
1429
1430         if (oqaq)
1431                 OBD_FREE_PTR(oqaq);
1432
1433         return rc ? rc : rc2;
1434 }
1435
1436 static int mds_get_space(struct obd_device *obd, struct obd_quotactl *oqctl)
1437 {
1438         struct obd_quotactl *soqc;
1439         struct lvfs_run_ctxt saved;
1440         int rc, rc1;
1441         ENTRY;
1442
1443         OBD_ALLOC_PTR(soqc);
1444         if (!soqc)
1445                 RETURN(-ENOMEM);
1446
1447         soqc->qc_cmd = Q_GETOQUOTA;
1448         soqc->qc_id = oqctl->qc_id;
1449         soqc->qc_type = oqctl->qc_type;
1450
1451         /* get block usage from OSS */
1452         soqc->qc_dqblk.dqb_curspace = 0;
1453         rc = obd_quotactl(obd->u.mds.mds_osc_exp, soqc);
1454         if (!rc || rc == -EREMOTEIO) {
1455                 oqctl->qc_dqblk.dqb_curspace = soqc->qc_dqblk.dqb_curspace;
1456                 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
1457         }
1458
1459         /* get block/inode usage from MDS */
1460         soqc->qc_dqblk.dqb_curspace = 0;
1461         soqc->qc_dqblk.dqb_curinodes = 0;
1462         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1463         rc1 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, soqc);
1464         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1465         if (!rc1) {
1466                 oqctl->qc_dqblk.dqb_curspace += soqc->qc_dqblk.dqb_curspace;
1467                 oqctl->qc_dqblk.dqb_curinodes = soqc->qc_dqblk.dqb_curinodes;
1468                 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
1469         }
1470
1471         OBD_FREE_PTR(soqc);
1472
1473         RETURN(rc ? : rc1);
1474 }
1475
1476 int mds_get_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1477 {
1478         struct mds_obd *mds = &obd->u.mds;
1479         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1480         struct lustre_dquot *dquot;
1481         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1482         int rc;
1483         ENTRY;
1484
1485         if (oqctl->qc_type != USRQUOTA &&
1486             oqctl->qc_type != GRPQUOTA)
1487                 RETURN(-EINVAL);
1488
1489         cfs_down(&mds->mds_qonoff_sem);
1490         dqblk->dqb_valid = 0;
1491         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
1492                 CWARN("quota[%u] is off\n", oqctl->qc_type);
1493                 GOTO(out, rc = -ESRCH);
1494         }
1495
1496         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1497         if (IS_ERR(dquot))
1498                 GOTO(out, rc = PTR_ERR(dquot));
1499
1500         cfs_down(&dquot->dq_sem);
1501         dqblk->dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1502         dqblk->dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1503         dqblk->dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1504         dqblk->dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1505         dqblk->dqb_btime = dquot->dq_dqb.dqb_btime;
1506         dqblk->dqb_itime = dquot->dq_dqb.dqb_itime;
1507         dqblk->dqb_valid |= QIF_LIMITS | QIF_TIMES;
1508         cfs_up(&dquot->dq_sem);
1509
1510         lustre_dqput(dquot);
1511         cfs_up(&mds->mds_qonoff_sem);
1512
1513         /* the usages in admin quota file is inaccurate */
1514         dqblk->dqb_curinodes = 0;
1515         dqblk->dqb_curspace = 0;
1516         rc = mds_get_space(obd, oqctl);
1517         EXIT;
1518         return rc;
1519 out:
1520         cfs_up(&mds->mds_qonoff_sem);
1521         return rc;
1522 }
1523
1524 int mds_get_obd_quota(struct obd_device *obd, struct obd_quotactl *oqctl)
1525 {
1526         struct lvfs_run_ctxt saved;
1527         int rc;
1528         ENTRY;
1529
1530         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1531         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
1532         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1533
1534         RETURN(rc);
1535 }
1536
1537
1538 /* FIXME we only recovery block limit by now, need recovery inode
1539  * limits also after CMD involved in */
1540 static int 
1541 dquot_recovery(struct obd_device *obd, unsigned int id, unsigned short type)
1542 {
1543         struct mds_obd *mds = &obd->u.mds;
1544         struct lustre_quota_info *qinfo= &mds->mds_quota_info;
1545         struct lustre_dquot *dquot;
1546         struct obd_quotactl *qctl;
1547         __u64 total_limits = 0;
1548         int rc;
1549         ENTRY;
1550
1551         OBD_ALLOC_PTR(qctl);
1552         if (qctl == NULL)
1553                 RETURN(-ENOMEM);
1554
1555         dquot = lustre_dqget(obd, qinfo, id, type);
1556         if (IS_ERR(dquot)) {
1557                 CERROR("Get dquot failed. (rc:%ld)\n", PTR_ERR(dquot));
1558                 OBD_FREE_PTR(qctl);
1559                 RETURN(PTR_ERR(dquot));
1560         }
1561
1562         cfs_down(&dquot->dq_sem);
1563
1564         /* don't recovery the dquot without limits or under setting */
1565         if (!(dquot->dq_dqb.dqb_bhardlimit || dquot->dq_dqb.dqb_bsoftlimit) ||
1566             dquot->dq_status)
1567                 GOTO(skip, rc = 0);
1568         dquot->dq_status |= DQ_STATUS_RECOVERY;
1569
1570         cfs_up(&dquot->dq_sem);
1571
1572         /* get real bhardlimit from all slaves. */
1573         qctl->qc_cmd = Q_GETOQUOTA;
1574         qctl->qc_type = type;
1575         qctl->qc_id = id;
1576         qctl->qc_stat = QUOTA_RECOVERING;
1577         rc = obd_quotactl(mds->mds_osc_exp, qctl);
1578         if (rc)
1579                 GOTO(out, rc);
1580         total_limits = qctl->qc_dqblk.dqb_bhardlimit;
1581
1582         /* get real bhardlimit from master */
1583         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, qctl);
1584         if (rc)
1585                 GOTO(out, rc);
1586         total_limits += qctl->qc_dqblk.dqb_bhardlimit;
1587
1588         /* amend the usage of the administrative quotafile */
1589         cfs_down(&mds->mds_qonoff_sem);
1590         cfs_down(&dquot->dq_sem);
1591
1592         dquot->dq_dqb.dqb_curspace = total_limits << QUOTABLOCK_BITS;
1593
1594         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1595         if (rc)
1596                 CERROR("write dquot failed! (rc:%d)\n", rc);
1597
1598         cfs_up(&dquot->dq_sem);
1599         cfs_up(&mds->mds_qonoff_sem);
1600         EXIT;
1601 out:
1602         cfs_down(&dquot->dq_sem);
1603         dquot->dq_status &= ~DQ_STATUS_RECOVERY;
1604 skip:
1605         cfs_up(&dquot->dq_sem);
1606
1607         lustre_dqput(dquot);
1608         OBD_FREE_PTR(qctl);
1609         return rc;
1610 }
1611
1612 struct qmaster_recov_thread_data {
1613         struct obd_device *obd;
1614         cfs_completion_t comp;
1615 };
1616
1617 static int qmaster_recovery_main(void *arg)
1618 {
1619         struct qmaster_recov_thread_data *data = arg;
1620         struct obd_device *obd = data->obd;
1621         struct mds_obd *mds = &obd->u.mds;
1622         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1623         int rc = 0;
1624         unsigned short type;
1625         ENTRY;
1626
1627         cfs_daemonize_ctxt("qmaster_recovd");
1628
1629         /* for mds */
1630         class_incref(obd, "qmaster_recovd_mds", obd);
1631         /* for lov */
1632         class_incref(mds->mds_osc_obd, "qmaster_recovd_lov", mds->mds_osc_obd);
1633
1634         cfs_complete(&data->comp);
1635
1636         for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1637                 cfs_list_t id_list;
1638                 struct dquot_id *dqid, *tmp;
1639
1640                 cfs_down(&mds->mds_qonoff_sem);
1641                 if (qinfo->qi_files[type] == NULL) {
1642                         cfs_up(&mds->mds_qonoff_sem);
1643                         continue;
1644                 }
1645                 CFS_INIT_LIST_HEAD(&id_list);
1646                 rc = fsfilt_qids(obd, qinfo->qi_files[type], NULL, type,
1647                                  &id_list);
1648                 cfs_up(&mds->mds_qonoff_sem);
1649
1650                 if (rc)
1651                         CERROR("error get ids from admin quotafile.(%d)\n", rc);
1652
1653                 cfs_list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
1654                         cfs_list_del_init(&dqid->di_link);
1655                         if (rc)
1656                                 goto free;
1657
1658                         rc = dquot_recovery(obd, dqid->di_id, type);
1659                         if (rc)
1660                                 CERROR("%s: qmaster recovery failed for %sid %d"
1661                                        " rc:%d)\n", obd->obd_name,
1662                                        type ? "g" : "u", dqid->di_id, rc);
1663 free:
1664                         OBD_FREE_PTR(dqid);
1665                 }
1666         }
1667         class_decref(mds->mds_osc_obd, "qmaster_recovd_lov", mds->mds_osc_obd);
1668         class_decref(obd, "qmaster_recovd_mds", obd);
1669         RETURN(rc);
1670 }
1671
1672 int mds_quota_recovery(struct obd_device *obd)
1673 {
1674         struct mds_obd *mds = &obd->u.mds;
1675         struct qmaster_recov_thread_data data;
1676         int rc = 0;
1677         ENTRY;
1678
1679         if (unlikely(!mds->mds_quota || obd->obd_stopping))
1680                 RETURN(rc);
1681
1682         cfs_mutex_down(&obd->obd_dev_sem);
1683         if (mds->mds_lov_desc.ld_active_tgt_count != mds->mds_lov_objid_count) {
1684                 CWARN("Only %u/%u OSTs are active, abort quota recovery\n",
1685                       mds->mds_lov_desc.ld_active_tgt_count,
1686                       mds->mds_lov_objid_count);
1687                 cfs_mutex_up(&obd->obd_dev_sem);
1688                 RETURN(rc);
1689         }
1690         cfs_mutex_up(&obd->obd_dev_sem);
1691
1692         data.obd = obd;
1693         cfs_init_completion(&data.comp);
1694
1695         rc = cfs_kernel_thread(qmaster_recovery_main, &data,
1696                                CLONE_VM|CLONE_FILES);
1697         if (rc < 0)
1698                 CERROR("%s: cannot start quota recovery thread: rc %d\n",
1699                        obd->obd_name, rc);
1700
1701         cfs_wait_for_completion(&data.comp);
1702         RETURN(rc);
1703 }
1704
1705 #endif /* HAVE_QUOTA_SUPPORT */