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 struct list_head lustre_dquot_hash[NR_DQHASH];
  69 static spinlock_t dquot_hash_lock = 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(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         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(dquot, lustre_dquot_cachep, CFS_ALLOC_IO, sizeof(*dquot));
 145         if (dquot == NULL)
 146                 RETURN(NULL);
 147
 148         CFS_INIT_LIST_HEAD(&dquot->dq_hash);
 149         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         struct list_head *head = lustre_dquot_hash +
 167             dquot_hashfn(dquot->dq_info, dquot->dq_id, dquot->dq_type);
 168         LASSERT(list_empty(&dquot->dq_hash));
 169         list_add(&dquot->dq_hash, head);
 170 }
 171
 172 static void remove_dquot_nolock(struct lustre_dquot *dquot)
 173 {
 174         LASSERT(!list_empty(&dquot->dq_hash));
 175         list_del_init(&dquot->dq_hash);
 176 }
 177
 178 static void lustre_dqput(struct lustre_dquot *dquot)
 179 {
 180         ENTRY;
 181         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         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         spin_lock(&dquot_hash_lock);
 204         if ((dquot = find_dquot(hashent, lqi, id, type)) != NULL) {
 205                 dquot->dq_refcnt++;
 206                 spin_unlock(&dquot_hash_lock);
 207                 free_dquot(empty);
 208         } else {
 209                 int rc;
 210
 211                 dquot = empty;
 212                 insert_dquot_nolock(dquot);
 213                 spin_unlock(&dquot_hash_lock);
 214
 215                 rc = fsfilt_dquot(obd, dquot, QFILE_RD_DQUOT);
 216                 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         quota_search_lqs(NULL, oqaq, qctxt, &lqs);
 239         if (lqs) {
 240                 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                 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         struct obd_device *lov_mds_obd = class_exp2obd(mds->mds_osc_exp);
 259         struct lov_obd *lov = &lov_mds_obd->u.lov;
 260         __u32 ost_num = lov->desc.ld_tgt_count, mdt_num = 1;
 261         struct quota_adjust_qunit *oqaq = NULL;
 262         unsigned int uid = 0, gid = 0;
 263         struct lustre_quota_info *info = &mds->mds_quota_info;
 264         struct lustre_dquot *dquot = NULL;
 265         int adjust_res = 0;
 266         int rc = 0;
 267         ENTRY;
 268
 269         LASSERT(mds);
 270         dquot = lustre_dqget(obd, info, id, type);
 271         if (IS_ERR(dquot))
 272                 RETURN(PTR_ERR(dquot));
 273
 274         OBD_ALLOC_PTR(oqaq);
 275         if (!oqaq)
 276                 GOTO(out, rc = -ENOMEM);
 277
 278         down(&dquot->dq_sem);
 279         init_oqaq(oqaq, qctxt, id, type);
 280
 281         rc = dquot_create_oqaq(qctxt, dquot, ost_num, mdt_num,
 282                                is_blk ? LQUOTA_FLAGS_ADJBLK :
 283                                LQUOTA_FLAGS_ADJINO, oqaq);
 284
 285         if (rc < 0) {
 286                 CDEBUG(D_ERROR, "create oqaq failed! (rc:%d)\n", rc);
 287                 GOTO(out_sem, rc);
 288         }
 289         QAQ_DEBUG(oqaq, "show oqaq.\n")
 290
 291         if (!QAQ_IS_ADJBLK(oqaq) && !QAQ_IS_ADJINO(oqaq))
 292                 GOTO(out_sem, rc);
 293
 294         /* adjust the mds slave qunit size */
 295         adjust_res = quota_adjust_slave_lqs(oqaq, qctxt);
 296         if (adjust_res <= 0) {
 297                 if (adjust_res < 0) {
 298                         rc = adjust_res;
 299                         CDEBUG(D_ERROR, "adjust mds slave's qunit size failed! \
 300                                (rc:%d)\n", rc);
 301                 } else {
 302                         CDEBUG(D_QUOTA, "qunit doesn't need to be adjusted.\n");
 303                 }
 304                 GOTO(out_sem, rc);
 305         }
 306
 307         if (type)
 308                 gid = dquot->dq_id;
 309         else
 310                 uid = dquot->dq_id;
 311
 312         up(&dquot->dq_sem);
 313
 314         rc = qctxt_adjust_qunit(obd, qctxt, uid, gid, is_blk, 0, NULL);
 315         if (rc == -EDQUOT || rc == -EBUSY) {
 316                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
 317                 rc = 0;
 318         }
 319         if (rc) {
 320                 CDEBUG(D_ERROR, "mds fail to adjust file quota! \
 321                                (rc:%d)\n", rc);
 322                 GOTO(out, rc);
 323         }
 324
 325         /* only when block qunit is reduced, boardcast to osts */
 326         if ((adjust_res & LQS_BLK_DECREASE) && QAQ_IS_ADJBLK(oqaq))
 327                 rc = obd_quota_adjust_qunit(mds->mds_osc_exp, oqaq, qctxt);
 328
 329 out:
 330         lustre_dqput(dquot);
 331         if (oqaq)
 332                 OBD_FREE_PTR(oqaq);
 333
 334         RETURN(rc);
 335 out_sem:
 336         up(&dquot->dq_sem);
 337         goto out;
 338 }
 339
 340 int dqacq_handler(struct obd_device *obd, struct qunit_data *qdata, int opc)
 341 {
 342         struct mds_obd *mds = &obd->u.mds;
 343         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
 344         struct lustre_quota_info *info = &mds->mds_quota_info;
 345         struct lustre_dquot *dquot = NULL;
 346         __u64 *usage = NULL;
 347         __u64 hlimit = 0, slimit = 0;
 348         time_t *time = NULL;
 349         unsigned int grace = 0;
 350         struct lustre_qunit_size *lqs = NULL;
 351         int rc = 0;
 352         ENTRY;
 353
 354         if (OBD_FAIL_CHECK(OBD_FAIL_OBD_DQACQ))
 355                 RETURN(-EIO);
 356
 357         dquot = lustre_dqget(obd, info, qdata->qd_id, QDATA_IS_GRP(qdata));
 358         if (IS_ERR(dquot))
 359                 RETURN(PTR_ERR(dquot));
 360
 361         DQUOT_DEBUG(dquot, "get dquot in dqacq_handler\n");
 362         QINFO_DEBUG(dquot->dq_info, "get dquot in dqadq_handler\n");
 363
 364         down(&mds->mds_qonoff_sem);
 365         down(&dquot->dq_sem);
 366
 367         if (dquot->dq_status & DQ_STATUS_RECOVERY) {
 368                 DQUOT_DEBUG(dquot, "this dquot is under recovering.\n");
 369                 GOTO(out, rc = -EBUSY);
 370         }
 371
 372         if (QDATA_IS_BLK(qdata)) {
 373                 grace = info->qi_info[QDATA_IS_GRP(qdata)].dqi_bgrace;
 374                 usage = &dquot->dq_dqb.dqb_curspace;
 375                 hlimit = dquot->dq_dqb.dqb_bhardlimit;
 376                 slimit = dquot->dq_dqb.dqb_bsoftlimit;
 377                 time = &dquot->dq_dqb.dqb_btime;
 378         } else {
 379                 grace = info->qi_info[QDATA_IS_GRP(qdata)].dqi_igrace;
 380                 usage = (__u64 *) & dquot->dq_dqb.dqb_curinodes;
 381                 hlimit = dquot->dq_dqb.dqb_ihardlimit;
 382                 slimit = dquot->dq_dqb.dqb_isoftlimit;
 383                 time = &dquot->dq_dqb.dqb_itime;
 384         }
 385
 386         /* if the quota limit in admin quotafile is zero, we just inform
 387          * slave to clear quota limit with zero qd_count */
 388         if (hlimit == 0 && slimit == 0) {
 389                 qdata->qd_count = 0;
 390                 GOTO(out, rc);
 391         }
 392
 393         switch (opc) {
 394         case QUOTA_DQACQ:
 395                 if (hlimit &&
 396                     QUSG(*usage + qdata->qd_count, QDATA_IS_BLK(qdata)) > hlimit)
 397                 {
 398                         if (QDATA_IS_CHANGE_QS(qdata) &&
 399                             QUSG(*usage, QDATA_IS_BLK(qdata)) < hlimit)
 400                                 qdata->qd_count = (hlimit -
 401                                         QUSG(*usage, QDATA_IS_BLK(qdata)))
 402                                         * (QDATA_IS_BLK(qdata) ?
 403                                            QUOTABLOCK_SIZE : 1);
 404                         else
 405                                 GOTO(out, rc = -EDQUOT);
 406                 }
 407
 408                 if (slimit &&
 409                     QUSG(*usage + qdata->qd_count, QDATA_IS_BLK(qdata)) > slimit) {
 410                         if (*time && cfs_time_current_sec() >= *time)
 411                                 GOTO(out, rc = -EDQUOT);
 412                         else if (!*time)
 413                                 *time = cfs_time_current_sec() + grace;
 414                 }
 415
 416                 *usage += qdata->qd_count;
 417                 break;
 418         case QUOTA_DQREL:
 419                 /* The usage in administrative file might be incorrect before
 420                  * recovery done */
 421                 if (*usage - qdata->qd_count < 0)
 422                         *usage = 0;
 423                 else
 424                         *usage -= qdata->qd_count;
 425
 426                 /* (usage <= soft limit) but not (usage < soft limit) */
 427                 if (!slimit || QUSG(*usage, QDATA_IS_BLK(qdata)) <= slimit)
 428                         *time = 0;
 429                 break;
 430         default:
 431                 LBUG();
 432         }
 433
 434         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
 435         EXIT;
 436 out:
 437         up(&dquot->dq_sem);
 438         up(&mds->mds_qonoff_sem);
 439         lustre_dqput(dquot);
 440         if (rc != -EDQUOT)
 441                 dqacq_adjust_qunit_sz(obd, qdata->qd_id, QDATA_IS_GRP(qdata),
 442                                       QDATA_IS_BLK(qdata));
 443
 444         quota_search_lqs(qdata, NULL, qctxt, &lqs);
 445         if (QDATA_IS_BLK(qdata)) {
 446                 if (!lqs) {
 447                         CDEBUG(D_INFO, "Can't find the lustre qunit size!\n");
 448                         qdata->qd_qunit  = qctxt->lqc_bunit_sz;
 449                 } else {
 450                         spin_lock(&lqs->lqs_lock);
 451                         qdata->qd_qunit  = lqs->lqs_bunit_sz;
 452                         spin_unlock(&lqs->lqs_lock);
 453                 }
 454                 QDATA_SET_ADJBLK(qdata);
 455         } else {
 456                 if (!lqs) {
 457                         CDEBUG(D_INFO, "Can't find the lustre qunit size!\n");
 458                         qdata->qd_qunit  = qctxt->lqc_iunit_sz;
 459                 } else {
 460                         spin_lock(&lqs->lqs_lock);
 461                         qdata->qd_qunit  = lqs->lqs_iunit_sz;
 462                         spin_unlock(&lqs->lqs_lock);
 463                 }
 464                 QDATA_SET_ADJINO(qdata);
 465         }
 466
 467         QDATA_DEBUG(qdata, "alloc/release qunit in dqacq_handler\n");
 468         if (lqs)
 469                 lqs_putref(lqs);
 470
 471         return rc;
 472 }
 473
 474 int mds_quota_adjust(struct obd_device *obd, unsigned int qcids[],
 475                      unsigned int qpids[], int rc, int opc)
 476 {
 477         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 478         int rc2 = 0;
 479         ENTRY;
 480
 481         if (rc && rc != -EDQUOT && rc != ENOLCK)
 482                 RETURN(0);
 483
 484         switch (opc) {
 485         case FSFILT_OP_SETATTR:
 486                 /* release file quota on original owner */
 487                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 0, 0,
 488                                           NULL);
 489                 /* release block quota on original owner */
 490                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 491                                           NULL);
 492                 /* acquire file quota on current owner */
 493                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 494                                           NULL);
 495                 /* acquire block quota on current owner */
 496                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 497                                           NULL);
 498                 break;
 499         case FSFILT_OP_UNLINK_PARTIAL_CHILD:
 500                 /* release file quota on child */
 501                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 502                                           NULL);
 503                 /* rlease block quota on child */
 504                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 505                                           NULL);
 506                 break;
 507         case FSFILT_OP_CREATE_PARTIAL_CHILD:
 508                 /* acquire file quota on child */
 509                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 510                                           NULL);
 511                 /* acquire block quota on child */
 512                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 513                                           NULL);
 514                 break;
 515         case FSFILT_OP_LINK:
 516                 /* acquire block quota on parent */
 517                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 518                                           NULL);
 519                 break;
 520         case FSFILT_OP_UNLINK:
 521                 /* release block quota on parent */
 522                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 523                                           NULL);
 524                 /* release file quota on child */
 525                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 526                                           NULL);
 527                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
 528                         /* release block quota on child */
 529                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0],
 530                                                   qcids[1], 1, 0, NULL);
 531                 break;
 532         case FSFILT_OP_UNLINK_PARTIAL_PARENT:
 533                 /* release block quota on parent */
 534                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 535                                           NULL);
 536                 break;
 537         case FSFILT_OP_CREATE:
 538                 /* acquire block quota on parent */
 539                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 540                                           NULL);
 541                 /* acquire file quota on child */
 542                 rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 0, 0,
 543                                           NULL);
 544                 if (qpids[0] != qcids[0] || qpids[1] != qcids[1])
 545                         /* acquire block quota on child */
 546                         rc2 |= qctxt_adjust_qunit(obd, qctxt, qcids[0],
 547                                                   qcids[1], 1, 0, NULL);
 548                 break;
 549         default:
 550                 LBUG();
 551                 break;
 552         }
 553
 554         if (rc2)
 555                 CDEBUG(rc2 == -EAGAIN ? D_QUOTA: D_ERROR,
 556                        "mds adjust qunit failed! (opc:%d rc:%d)\n", opc, rc2);
 557         RETURN(0);
 558 }
 559
 560 int filter_quota_adjust(struct obd_device *obd, unsigned int qcids[],
 561                         unsigned int qpids[], int rc, int opc)
 562 {
 563         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 564         int rc2 = 0;
 565         ENTRY;
 566
 567         if (rc && rc != -EDQUOT)
 568                 RETURN(0);
 569
 570         switch (opc) {
 571         case FSFILT_OP_SETATTR:
 572                 /* acquire/release block quota on original & current owner */
 573                 rc = qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 574                                         NULL);
 575                 rc2 = qctxt_adjust_qunit(obd, qctxt, qpids[0], qpids[1], 1, 0,
 576                                          NULL);
 577                 break;
 578         case FSFILT_OP_UNLINK:
 579                 /* release block quota on this owner */
 580         case FSFILT_OP_CREATE: /* XXX for write operation on obdfilter */
 581                 /* acquire block quota on this owner */
 582                 rc = qctxt_adjust_qunit(obd, qctxt, qcids[0], qcids[1], 1, 0,
 583                                         NULL);
 584                 break;
 585         default:
 586                 LBUG();
 587                 break;
 588         }
 589
 590         if (rc || rc2) {
 591                 if (!rc)
 592                         rc = rc2;
 593                 CDEBUG(rc == -EAGAIN ? D_QUOTA: D_ERROR,
 594                        "filter adjust qunit failed! (opc:%d rc%d)\n",
 595                        opc, rc);
 596         }
 597
 598         RETURN(0);
 599 }
 600
 601 static const char prefix[] = "OBJECTS/";
 602
 603 int mds_quota_invalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
 604 {
 605         struct mds_obd *mds = &obd->u.mds;
 606         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 607         int rc = 0, i;
 608         char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 609         char name[64];
 610         struct lvfs_run_ctxt saved;
 611
 612         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 613
 614         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 615
 616         down(&mds->mds_qonoff_sem);
 617
 618         for (i = 0; i < MAXQUOTAS; i++) {
 619                 struct file *fp;
 620
 621                 if (!Q_TYPESET(oqctl, i))
 622                         continue;
 623
 624                 /* quota file has been opened ? */
 625                 if (qinfo->qi_files[i]) {
 626                         rc = -EBUSY;
 627                         goto out;
 628                 }
 629
 630                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
 631                 sprintf(name, "%s%s", prefix, quotafile[i]);
 632
 633                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
 634                 if (IS_ERR(fp)) {
 635                         rc = PTR_ERR(fp);
 636                         CERROR("error invalidating admin quotafile %s (rc:%d)\n",
 637                                name, rc);
 638                 }
 639                 else
 640                         filp_close(fp, 0);
 641         }
 642
 643 out:
 644         up(&mds->mds_qonoff_sem);
 645
 646         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 647
 648         return rc;
 649 }
 650
 651 int mds_quota_finvalidate(struct obd_device *obd, struct obd_quotactl *oqctl)
 652 {
 653         struct mds_obd *mds = &obd->u.mds;
 654         int rc;
 655         struct lvfs_run_ctxt saved;
 656
 657         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 658         down(&mds->mds_qonoff_sem);
 659
 660         oqctl->qc_cmd = Q_FINVALIDATE;
 661         oqctl->qc_id = obd->u.obt.obt_qfmt;
 662         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 663         if (!rc)
 664                 rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 665
 666         up(&mds->mds_qonoff_sem);
 667         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 668
 669         return rc;
 670 }
 671
 672 int init_admin_quotafiles(struct obd_device *obd, struct obd_quotactl *oqctl)
 673 {
 674         struct mds_obd *mds = &obd->u.mds;
 675         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 676         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 677         struct lvfs_run_ctxt saved;
 678         char name[64];
 679         int i, rc = 0;
 680         ENTRY;
 681
 682         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 683
 684         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 685
 686         down(&mds->mds_qonoff_sem);
 687
 688         for (i = 0; i < MAXQUOTAS && !rc; i++) {
 689                 struct file *fp;
 690
 691                 if (!Q_TYPESET(oqctl, i))
 692                         continue;
 693
 694                 /* quota file has been opened ? */
 695                 if (qinfo->qi_files[i]) {
 696                         CWARN("init %s admin quotafile while quota on.\n",
 697                               i == USRQUOTA ? "user" : "group");
 698                         continue;
 699                 }
 700
 701                 LASSERT(strlen(quotafile[i]) + sizeof(prefix) <= sizeof(name));
 702                 sprintf(name, "%s%s", prefix, quotafile[i]);
 703
 704                 /* check if quota file exists and is correct */
 705                 fp = filp_open(name, O_RDONLY, 0);
 706                 if (!IS_ERR(fp)) {
 707                         /* irregular file is not the right place for quota */
 708                         if (!S_ISREG(fp->f_dentry->d_inode->i_mode)) {
 709                                 CERROR("admin quota file %s is not "
 710                                        "regular!", name);
 711                                 filp_close(fp, 0);
 712                                 rc = -EINVAL;
 713                                 break;
 714                         }
 715                         qinfo->qi_files[i] = fp;
 716                         rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
 717                         qinfo->qi_files[i] = 0;
 718                         filp_close(fp, 0);
 719                 }
 720                 else
 721                         rc = PTR_ERR(fp);
 722
 723                 if (!rc)
 724                         continue;
 725
 726                 /* -EINVAL may be returned by quotainfo for bad quota file */
 727                 if (rc != -ENOENT && rc != -EINVAL) {
 728                         CERROR("error opening old quota file %s (%d)\n",
 729                                name, rc);
 730                         break;
 731                 }
 732
 733                 CDEBUG(D_INFO, "%s new quota file %s\n", name,
 734                        rc == -ENOENT ? "creating" : "overwriting");
 735
 736                 /* create quota file overwriting old if needed */
 737                 fp = filp_open(name, O_CREAT | O_TRUNC | O_RDWR, 0644);
 738                 if (IS_ERR(fp)) {
 739                         rc = PTR_ERR(fp);
 740                         CERROR("error creating admin quotafile %s (rc:%d)\n",
 741                                name, rc);
 742                         break;
 743                 }
 744
 745                 qinfo->qi_files[i] = fp;
 746
 747                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_INIT_INFO);
 748                 if (rc)
 749                         CERROR("error init %s admin quotafile! (rc:%d)\n",
 750                                i == USRQUOTA ? "user" : "group", rc);
 751
 752                 filp_close(fp, 0);
 753                 qinfo->qi_files[i] = NULL;
 754         }
 755         up(&mds->mds_qonoff_sem);
 756
 757         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 758         RETURN(rc);
 759 }
 760
 761 static int close_quota_files(struct obd_quotactl *oqctl,
 762                              struct lustre_quota_info *qinfo)
 763 {
 764         int i, rc = 0;
 765         ENTRY;
 766
 767         for (i = 0; i < MAXQUOTAS; i++) {
 768                 if (!Q_TYPESET(oqctl, i))
 769                         continue;
 770                 if (qinfo->qi_files[i] == NULL) {
 771                         rc = -ESRCH;
 772                         continue;
 773                 }
 774                 filp_close(qinfo->qi_files[i], 0);
 775                 qinfo->qi_files[i] = NULL;
 776         }
 777         RETURN(rc);
 778 }
 779
 780 int mds_admin_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
 781 {
 782         struct mds_obd *mds = &obd->u.mds;
 783         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 784         const char *quotafile[] = LUSTRE_ADMIN_QUOTAFILES_V2;
 785         char name[64];
 786         int i, rc = 0;
 787         ENTRY;
 788
 789         LASSERT(qinfo->qi_version == LUSTRE_QUOTA_V2);
 790
 791         /* open admin quota files and read quotafile info */
 792         for (i = 0; i < MAXQUOTAS; i++) {
 793                 struct file *fp;
 794
 795                 if (!Q_TYPESET(oqctl, i))
 796                         continue;
 797
 798                 LASSERT(strlen(quotafile[i])
 799                         + sizeof(prefix) <= sizeof(name));
 800                 sprintf(name, "%s%s", prefix, quotafile[i]);
 801
 802                 if (qinfo->qi_files[i] != NULL) {
 803                         rc = -EBUSY;
 804                         break;
 805                 }
 806
 807                 fp = filp_open(name, O_RDWR, 0);
 808                 if (IS_ERR(fp) || !S_ISREG(fp->f_dentry->d_inode->i_mode)) {
 809                         rc = IS_ERR(fp) ? PTR_ERR(fp) : -EINVAL;
 810                         CERROR("error open/create %s! (rc:%d)\n", name, rc);
 811                         break;
 812                 }
 813                 qinfo->qi_files[i] = fp;
 814
 815                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_CHK);
 816                 if (rc) {
 817                         CERROR("invalid quota file %s! (rc:%d)\n", name, rc);
 818                         break;
 819                 }
 820
 821                 rc = fsfilt_quotainfo(obd, qinfo, i, QFILE_RD_INFO);
 822                 if (rc) {
 823                         CERROR("error read quotainfo of %s! (rc:%d)\n", name,
 824                                rc);
 825                         break;
 826                 }
 827         }
 828
 829         if (rc && rc != -EBUSY)
 830                 close_quota_files(oqctl, qinfo);
 831
 832         RETURN(rc);
 833 }
 834
 835 int mds_admin_quota_off(struct obd_device *obd,
 836                         struct obd_quotactl *oqctl)
 837 {
 838         struct mds_obd *mds = &obd->u.mds;
 839         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 840         int rc;
 841         ENTRY;
 842
 843         /* close admin quota files */
 844         rc = close_quota_files(oqctl, qinfo);
 845         RETURN(rc);
 846 }
 847
 848 int mds_quota_on(struct obd_device *obd, struct obd_quotactl *oqctl)
 849 {
 850         struct mds_obd *mds = &obd->u.mds;
 851         struct obd_device_target *obt = &obd->u.obt;
 852         struct lvfs_run_ctxt saved;
 853         int rc;
 854         ENTRY;
 855
 856         if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 857                 CDEBUG(D_INFO, "other people are doing quotacheck\n");
 858                 atomic_inc(&obt->obt_quotachecking);
 859                 RETURN(-EBUSY);
 860         }
 861
 862         down(&mds->mds_qonoff_sem);
 863         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 864         rc = mds_admin_quota_on(obd, oqctl);
 865         if (rc)
 866                 goto out;
 867
 868         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 869         if (rc)
 870                 goto out;
 871
 872         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 873         if (!rc)
 874                 obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
 875 out:
 876         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 877         up(&mds->mds_qonoff_sem);
 878         atomic_inc(&obt->obt_quotachecking);
 879         RETURN(rc);
 880 }
 881
 882 int mds_quota_off(struct obd_device *obd, struct obd_quotactl *oqctl)
 883 {
 884         struct mds_obd *mds = &obd->u.mds;
 885         struct obd_device_target *obt = &obd->u.obt;
 886         struct lvfs_run_ctxt saved;
 887         int rc, rc2;
 888         ENTRY;
 889
 890         if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 891                 CDEBUG(D_INFO, "other people are doing quotacheck\n");
 892                 atomic_inc(&obt->obt_quotachecking);
 893                 RETURN(-EBUSY);
 894         }
 895
 896         down(&mds->mds_qonoff_sem);
 897         /* close admin quota files */
 898         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 899         mds_admin_quota_off(obd, oqctl);
 900
 901         rc = obd_quotactl(mds->mds_osc_exp, oqctl);
 902         rc2 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 903         if (!rc2)
 904                 obt->obt_qctxt.lqc_flags &= ~UGQUOTA2LQC(oqctl->qc_type);
 905
 906         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 907         up(&mds->mds_qonoff_sem);
 908         atomic_inc(&obt->obt_quotachecking);
 909
 910         RETURN(rc ?: rc2);
 911 }
 912
 913 int mds_set_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
 914 {
 915         struct mds_obd *mds = &obd->u.mds;
 916         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 917         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
 918         int rc;
 919         ENTRY;
 920
 921         down(&mds->mds_qonoff_sem);
 922         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
 923                 rc = -ESRCH;
 924                 goto out;
 925         }
 926
 927         qinfo->qi_info[oqctl->qc_type].dqi_bgrace = dqinfo->dqi_bgrace;
 928         qinfo->qi_info[oqctl->qc_type].dqi_igrace = dqinfo->dqi_igrace;
 929         qinfo->qi_info[oqctl->qc_type].dqi_flags = dqinfo->dqi_flags;
 930
 931         rc = fsfilt_quotainfo(obd, qinfo, oqctl->qc_type, QFILE_WR_INFO);
 932
 933 out:
 934         up(&mds->mds_qonoff_sem);
 935         RETURN(rc);
 936 }
 937
 938 int mds_get_dqinfo(struct obd_device *obd, struct obd_quotactl *oqctl)
 939 {
 940         struct mds_obd *mds = &obd->u.mds;
 941         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
 942         struct obd_dqinfo *dqinfo = &oqctl->qc_dqinfo;
 943         int rc = 0;
 944         ENTRY;
 945
 946         down(&mds->mds_qonoff_sem);
 947         if (qinfo->qi_files[oqctl->qc_type] == NULL) {
 948                 rc = -ESRCH;
 949                 goto out;
 950         }
 951
 952         dqinfo->dqi_bgrace = qinfo->qi_info[oqctl->qc_type].dqi_bgrace;
 953         dqinfo->dqi_igrace = qinfo->qi_info[oqctl->qc_type].dqi_igrace;
 954         dqinfo->dqi_flags = qinfo->qi_info[oqctl->qc_type].dqi_flags;
 955
 956 out:
 957         up(&mds->mds_qonoff_sem);
 958         RETURN(rc);
 959 }
 960
 961 int dquot_create_oqaq(struct lustre_quota_ctxt *qctxt,
 962                       struct lustre_dquot *dquot, __u32 ost_num, __u32 mdt_num,
 963                       int type, struct quota_adjust_qunit *oqaq)
 964 {
 965         __u64 bunit_curr_o, iunit_curr_o;
 966         unsigned long shrink_qunit_limit = qctxt->lqc_cqs_boundary_factor;
 967         unsigned long cqs_factor = qctxt->lqc_cqs_qs_factor;
 968         __u64 blimit = dquot->dq_dqb.dqb_bhardlimit ?
 969                 dquot->dq_dqb.dqb_bhardlimit : dquot->dq_dqb.dqb_bsoftlimit;
 970         __u64 ilimit = dquot->dq_dqb.dqb_ihardlimit ?
 971                 dquot->dq_dqb.dqb_ihardlimit : dquot->dq_dqb.dqb_isoftlimit;
 972         int rc = 0;
 973         ENTRY;
 974
 975         if (!dquot || !oqaq)
 976                 RETURN(-EINVAL);
 977         LASSERT_SEM_LOCKED(&dquot->dq_sem);
 978         LASSERT(oqaq->qaq_iunit_sz);
 979         LASSERT(oqaq->qaq_bunit_sz);
 980
 981         /* don't change qunit size */
 982         if (!qctxt->lqc_switch_qs)
 983                 RETURN(rc);
 984
 985         bunit_curr_o = oqaq->qaq_bunit_sz;
 986         iunit_curr_o = oqaq->qaq_iunit_sz;
 987
 988         if (dquot->dq_type == GRPQUOTA)
 989                 QAQ_SET_GRP(oqaq);
 990
 991         if ((type & LQUOTA_FLAGS_ADJBLK) && blimit) {
 992                 __u64 b_limitation =
 993                         oqaq->qaq_bunit_sz * ost_num * shrink_qunit_limit;
 994                 /* enlarge block qunit size */
 995                 while (blimit >
 996                        QUSG(dquot->dq_dqb.dqb_curspace + 2 * b_limitation, 1)) {
 997                         oqaq->qaq_bunit_sz =
 998                                 QUSG(oqaq->qaq_bunit_sz * cqs_factor, 1)
 999                                 << QUOTABLOCK_BITS;
1000                         b_limitation = oqaq->qaq_bunit_sz * ost_num *
1001                                 shrink_qunit_limit;
1002                 }
1003
1004                 if (oqaq->qaq_bunit_sz > qctxt->lqc_bunit_sz)
1005                         oqaq->qaq_bunit_sz = qctxt->lqc_bunit_sz;
1006
1007                 /* shrink block qunit size */
1008                 while (blimit <
1009                        QUSG(dquot->dq_dqb.dqb_curspace + b_limitation, 1)) {
1010                         do_div(oqaq->qaq_bunit_sz , cqs_factor);
1011                         oqaq->qaq_bunit_sz = QUSG(oqaq->qaq_bunit_sz, 1) <<
1012                                 QUOTABLOCK_BITS;
1013                         b_limitation = oqaq->qaq_bunit_sz * ost_num *
1014                                 shrink_qunit_limit;
1015                         if (oqaq->qaq_bunit_sz <  qctxt->lqc_cqs_least_bunit)
1016                                 break;
1017                 }
1018
1019                 if (oqaq->qaq_bunit_sz < qctxt->lqc_cqs_least_bunit)
1020                         oqaq->qaq_bunit_sz = qctxt->lqc_cqs_least_bunit;
1021
1022                 if (bunit_curr_o != oqaq->qaq_bunit_sz)
1023                         QAQ_SET_ADJBLK(oqaq);
1024
1025         }
1026
1027         if ((type & LQUOTA_FLAGS_ADJINO) && ilimit) {
1028                 __u64 i_limitation =
1029                         oqaq->qaq_iunit_sz * mdt_num * shrink_qunit_limit;
1030                 /* enlarge file qunit size */
1031                 while (ilimit > dquot->dq_dqb.dqb_curinodes
1032                        + 2 * i_limitation) {
1033                         oqaq->qaq_iunit_sz = oqaq->qaq_iunit_sz * cqs_factor;
1034                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1035                                 shrink_qunit_limit;
1036                 }
1037
1038                 if (oqaq->qaq_iunit_sz > qctxt->lqc_iunit_sz)
1039                         oqaq->qaq_iunit_sz = qctxt->lqc_iunit_sz;
1040
1041                 /* shrink file qunit size */
1042                 while (ilimit < dquot->dq_dqb.dqb_curinodes
1043                        + i_limitation) {
1044                         do_div(oqaq->qaq_iunit_sz, cqs_factor);
1045                         i_limitation = oqaq->qaq_iunit_sz * mdt_num *
1046                                        shrink_qunit_limit;
1047                         if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1048                                 break;
1049                 }
1050
1051                 if (oqaq->qaq_iunit_sz < qctxt->lqc_cqs_least_iunit)
1052                         oqaq->qaq_iunit_sz = qctxt->lqc_cqs_least_iunit;
1053
1054                 if (iunit_curr_o != oqaq->qaq_iunit_sz)
1055                         QAQ_SET_ADJINO(oqaq);
1056
1057         }
1058
1059         if (!dquot->dq_dqb.dqb_bhardlimit && !dquot->dq_dqb.dqb_bsoftlimit &&
1060             !dquot->dq_dqb.dqb_ihardlimit && !dquot->dq_dqb.dqb_isoftlimit) {
1061                 oqaq->qaq_bunit_sz = 0;
1062                 oqaq->qaq_iunit_sz = 0;
1063                 QAQ_SET_ADJBLK(oqaq);
1064                 QAQ_SET_ADJINO(oqaq);
1065         }
1066
1067         QAQ_DEBUG(oqaq, "the oqaq computed\n");
1068
1069         RETURN(rc);
1070 }
1071
1072 static int mds_init_slave_ilimits(struct obd_device *obd,
1073                                   struct obd_quotactl *oqctl, int set,
1074                                   struct quota_adjust_qunit *oqaq)
1075 {
1076         /* XXX: for file limits only adjust local now */
1077         struct obd_device_target *obt = &obd->u.obt;
1078         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1079         unsigned int uid = 0, gid = 0;
1080         struct obd_quotactl *ioqc = NULL;
1081         int flag;
1082         int rc;
1083         ENTRY;
1084
1085         /* if we are going to set zero limit, needn't init slaves */
1086         if (!oqctl->qc_dqblk.dqb_ihardlimit && !oqctl->qc_dqblk.dqb_isoftlimit &&
1087             !set)
1088                 RETURN(0);
1089
1090         OBD_ALLOC_PTR(ioqc);
1091         if (!ioqc)
1092                 RETURN(-ENOMEM);
1093
1094         flag = oqctl->qc_dqblk.dqb_ihardlimit ||
1095                oqctl->qc_dqblk.dqb_isoftlimit || !set;
1096         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1097         ioqc->qc_id = oqctl->qc_id;
1098         ioqc->qc_type = oqctl->qc_type;
1099         ioqc->qc_dqblk.dqb_valid = QIF_ILIMITS;
1100         ioqc->qc_dqblk.dqb_ihardlimit = flag ? MIN_QLIMIT : 0;
1101
1102         if (QAQ_IS_ADJINO(oqaq)) {
1103                 /* adjust the mds slave's inode qunit size */
1104                 rc = quota_adjust_slave_lqs(oqaq, qctxt);
1105                 if (rc < 0)
1106                         CDEBUG(D_ERROR, "adjust mds slave's inode qunit size \
1107                                failed! (rc:%d)\n", rc);
1108         }
1109
1110         /* set local limit to MIN_QLIMIT */
1111         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1112         if (rc)
1113                 GOTO(out, rc);
1114
1115         /* trigger local qunit pre-acquire */
1116         if (oqctl->qc_type == USRQUOTA)
1117                 uid = oqctl->qc_id;
1118         else
1119                 gid = oqctl->qc_id;
1120
1121         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, uid, gid, 0, 0,
1122                                 NULL);
1123         if (rc == -EDQUOT || rc == -EBUSY) {
1124                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1125                 rc = 0;
1126         }
1127         if (rc) {
1128                 CDEBUG(D_QUOTA,"error mds adjust local file quota! (rc:%d)\n",
1129                        rc);
1130                 GOTO(out, rc);
1131         }
1132         /* FIXME initialize all slaves in CMD */
1133         EXIT;
1134 out:
1135         if (ioqc)
1136                 OBD_FREE_PTR(ioqc);
1137         return rc;
1138 }
1139
1140 static int mds_init_slave_blimits(struct obd_device *obd,
1141                                   struct obd_quotactl *oqctl, int set,
1142                                   struct quota_adjust_qunit *oqaq)
1143 {
1144         struct obd_device_target *obt = &obd->u.obt;
1145         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
1146         struct mds_obd *mds = &obd->u.mds;
1147         struct obd_quotactl *ioqc;
1148         unsigned int uid = 0, gid = 0;
1149         int rc, rc1 = 0;
1150         int flag;
1151         ENTRY;
1152
1153         /* if we are going to set zero limit, needn't init slaves */
1154         if (!oqctl->qc_dqblk.dqb_bhardlimit && !oqctl->qc_dqblk.dqb_bsoftlimit &&
1155             !set)
1156                 RETURN(0);
1157
1158         OBD_ALLOC_PTR(ioqc);
1159         if (!ioqc)
1160                 RETURN(-ENOMEM);
1161
1162         flag = oqctl->qc_dqblk.dqb_bhardlimit ||
1163                oqctl->qc_dqblk.dqb_bsoftlimit || !set;
1164         ioqc->qc_cmd = flag ? Q_INITQUOTA : Q_SETQUOTA;
1165         ioqc->qc_id = oqctl->qc_id;
1166         ioqc->qc_type = oqctl->qc_type;
1167         ioqc->qc_dqblk.dqb_valid = QIF_BLIMITS;
1168         ioqc->qc_dqblk.dqb_bhardlimit = flag ? MIN_QLIMIT : 0;
1169         if (QAQ_IS_ADJBLK(oqaq)) {
1170                 /* adjust the mds slave's block qunit size */
1171                 rc1 = quota_adjust_slave_lqs(oqaq, qctxt);
1172                 if (rc1 < 0)
1173                         CERROR("adjust mds slave's block qunit size failed!"
1174                                "(rc:%d)\n", rc1);
1175         }
1176
1177         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, ioqc);
1178         if (rc)
1179                 GOTO(out, rc);
1180
1181         /* trigger local qunit pre-acquire */
1182         if (oqctl->qc_type == USRQUOTA)
1183                 uid = oqctl->qc_id;
1184         else
1185                 gid = oqctl->qc_id;
1186
1187         /* initialize all slave's limit */
1188         rc = obd_quotactl(mds->mds_osc_exp, ioqc);
1189
1190         rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt, uid, gid, 1, 0,
1191                                 NULL);
1192         if (rc == -EDQUOT || rc == -EBUSY) {
1193                 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
1194                 rc = 0;
1195         }
1196         if (rc) {
1197                 CERROR("error mds adjust local block quota! (rc:%d)\n", rc);
1198                 GOTO(out, rc);
1199         }
1200
1201         /* adjust all slave's qunit size when setting quota
1202          * this is will create a lqs for every ost, which will present
1203          * certain uid/gid is set quota or not */
1204         QAQ_SET_ADJBLK(oqaq);
1205         rc = obd_quota_adjust_qunit(mds->mds_osc_exp, oqaq, qctxt);
1206
1207         EXIT;
1208 out:
1209         OBD_FREE_PTR(ioqc);
1210         return rc;
1211 }
1212
1213 int mds_set_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1214 {
1215         struct mds_obd *mds = &obd->u.mds;
1216         struct lustre_quota_ctxt *qctxt = &mds->mds_obt.obt_qctxt;
1217         struct obd_device *lov_obd = class_exp2obd(mds->mds_osc_exp);
1218         struct lov_obd *lov = &lov_obd->u.lov;
1219         struct quota_adjust_qunit *oqaq = NULL;
1220         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1221         __u64 ihardlimit, isoftlimit, bhardlimit, bsoftlimit;
1222         time_t btime, itime;
1223         struct lustre_dquot *dquot;
1224         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1225         /* orig_set means if quota was set before; now_set means we are
1226          * setting/cancelling quota */
1227         int orig_set, now_set;
1228         int rc, rc2 = 0, flag = 0;
1229         ENTRY;
1230
1231         OBD_ALLOC_PTR(oqaq);
1232         if (!oqaq)
1233                 RETURN(-ENOMEM);
1234         down(&mds->mds_qonoff_sem);
1235         init_oqaq(oqaq, qctxt, oqctl->qc_id, oqctl->qc_type);
1236
1237         if (qinfo->qi_files[oqctl->qc_type] == NULL)
1238                 GOTO(out_sem, rc = -ESRCH);
1239
1240         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1241         if (IS_ERR(dquot))
1242                 GOTO(out_sem, rc = PTR_ERR(dquot));
1243         DQUOT_DEBUG(dquot, "get dquot in mds_set_blk\n");
1244         QINFO_DEBUG(dquot->dq_info, "get dquot in mds_set_blk\n");
1245
1246         down(&dquot->dq_sem);
1247
1248         if (dquot->dq_status) {
1249                 up(&dquot->dq_sem);
1250                 lustre_dqput(dquot);
1251                 GOTO(out_sem, rc = -EBUSY);
1252         }
1253         dquot->dq_status |= DQ_STATUS_SET;
1254
1255         ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1256         isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1257         bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1258         bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1259         btime = dquot->dq_dqb.dqb_btime;
1260         itime = dquot->dq_dqb.dqb_itime;
1261
1262         if (dqblk->dqb_valid & QIF_BTIME)
1263                 dquot->dq_dqb.dqb_btime = dqblk->dqb_btime;
1264         if (dqblk->dqb_valid & QIF_ITIME)
1265                 dquot->dq_dqb.dqb_itime = dqblk->dqb_itime;
1266
1267         if (dqblk->dqb_valid & QIF_BLIMITS) {
1268                 dquot->dq_dqb.dqb_bhardlimit = dqblk->dqb_bhardlimit;
1269                 dquot->dq_dqb.dqb_bsoftlimit = dqblk->dqb_bsoftlimit;
1270                 /* clear usage (limit pool) */
1271                 if (!dquot->dq_dqb.dqb_bhardlimit &&
1272                     !dquot->dq_dqb.dqb_bsoftlimit)
1273                         dquot->dq_dqb.dqb_curspace = 0;
1274
1275                 /* clear grace time */
1276                 if (!dqblk->dqb_bsoftlimit ||
1277                     toqb(dquot->dq_dqb.dqb_curspace) <= dqblk->dqb_bsoftlimit)
1278                         dquot->dq_dqb.dqb_btime = 0;
1279                 /* set grace only if user hasn't provided his own */
1280                 else if (!(dqblk->dqb_valid & QIF_BTIME))
1281                         dquot->dq_dqb.dqb_btime = cfs_time_current_sec() +
1282                                 qinfo->qi_info[dquot->dq_type].dqi_bgrace;
1283
1284                 flag |= LQUOTA_FLAGS_ADJBLK;
1285         }
1286
1287         if (dqblk->dqb_valid & QIF_ILIMITS) {
1288                 dquot->dq_dqb.dqb_ihardlimit = dqblk->dqb_ihardlimit;
1289                 dquot->dq_dqb.dqb_isoftlimit = dqblk->dqb_isoftlimit;
1290                 /* clear usage (limit pool) */
1291                 if (!dquot->dq_dqb.dqb_ihardlimit &&
1292                     !dquot->dq_dqb.dqb_isoftlimit)
1293                         dquot->dq_dqb.dqb_curinodes = 0;
1294
1295                 if (!dqblk->dqb_isoftlimit ||
1296                     dquot->dq_dqb.dqb_curinodes <= dqblk->dqb_isoftlimit)
1297                         dquot->dq_dqb.dqb_itime = 0;
1298                 else if (!(dqblk->dqb_valid & QIF_ITIME))
1299                         dquot->dq_dqb.dqb_itime = cfs_time_current_sec() +
1300                                 qinfo->qi_info[dquot->dq_type].dqi_igrace;
1301
1302                 flag |= LQUOTA_FLAGS_ADJINO;
1303         }
1304         QAQ_DEBUG(oqaq, "before dquot_create_oqaq\n");
1305         rc = dquot_create_oqaq(qctxt, dquot, lov->desc.ld_tgt_count, 1,
1306                                flag, oqaq);
1307         QAQ_DEBUG(oqaq, "after dquot_create_oqaq\n");
1308         if (rc < 0)
1309                 CDEBUG(D_QUOTA, "adjust qunit size failed! (rc:%d)\n", rc);
1310
1311
1312         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1313
1314         up(&dquot->dq_sem);
1315
1316         if (rc) {
1317                 CERROR("set limit failed! (rc:%d)\n", rc);
1318                 goto out;
1319         }
1320
1321         up(&mds->mds_qonoff_sem);
1322         orig_set = ihardlimit || isoftlimit;
1323         now_set  = dqblk->dqb_ihardlimit || dqblk->dqb_isoftlimit;
1324         if (dqblk->dqb_valid & QIF_ILIMITS && orig_set != now_set) {
1325                 down(&dquot->dq_sem);
1326                 dquot->dq_dqb.dqb_curinodes = 0;
1327                 up(&dquot->dq_sem);
1328                 rc = mds_init_slave_ilimits(obd, oqctl, orig_set, oqaq);
1329                 if (rc) {
1330                         CERROR("init slave ilimits failed! (rc:%d)\n", rc);
1331                         goto revoke_out;
1332                 }
1333         }
1334
1335         orig_set = bhardlimit || bsoftlimit;
1336         now_set  = dqblk->dqb_bhardlimit || dqblk->dqb_bsoftlimit;
1337         if (dqblk->dqb_valid & QIF_BLIMITS && orig_set != now_set) {
1338                 down(&dquot->dq_sem);
1339                 dquot->dq_dqb.dqb_curspace = 0;
1340                 up(&dquot->dq_sem);
1341                 rc = mds_init_slave_blimits(obd, oqctl, orig_set, oqaq);
1342                 if (rc) {
1343                         CERROR("init slave blimits failed! (rc:%d)\n", rc);
1344                         goto revoke_out;
1345                 }
1346         }
1347
1348 revoke_out:
1349         down(&mds->mds_qonoff_sem);
1350         down(&dquot->dq_sem);
1351         if (rc) {
1352                 /* cancel previous setting */
1353                 dquot->dq_dqb.dqb_ihardlimit = ihardlimit;
1354                 dquot->dq_dqb.dqb_isoftlimit = isoftlimit;
1355                 dquot->dq_dqb.dqb_bhardlimit = bhardlimit;
1356                 dquot->dq_dqb.dqb_bsoftlimit = bsoftlimit;
1357                 dquot->dq_dqb.dqb_btime = btime;
1358                 dquot->dq_dqb.dqb_itime = itime;
1359         }
1360         rc2 = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1361         up(&dquot->dq_sem);
1362
1363 out:
1364         down(&dquot->dq_sem);
1365         dquot->dq_status &= ~DQ_STATUS_SET;
1366         up(&dquot->dq_sem);
1367         lustre_dqput(dquot);
1368         EXIT;
1369 out_sem:
1370         up(&mds->mds_qonoff_sem);
1371
1372         if (oqaq)
1373                 OBD_FREE_PTR(oqaq);
1374
1375         return rc ? rc : rc2;
1376 }
1377
1378 static int mds_get_space(struct obd_device *obd, struct obd_quotactl *oqctl)
1379 {
1380         struct obd_quotactl *soqc;
1381         struct lvfs_run_ctxt saved;
1382         int rc, rc1;
1383         ENTRY;
1384
1385         OBD_ALLOC_PTR(soqc);
1386         if (!soqc)
1387                 RETURN(-ENOMEM);
1388
1389         soqc->qc_cmd = Q_GETOQUOTA;
1390         soqc->qc_id = oqctl->qc_id;
1391         soqc->qc_type = oqctl->qc_type;
1392
1393         /* get block usage from OSS */
1394         soqc->qc_dqblk.dqb_curspace = 0;
1395         rc = obd_quotactl(obd->u.mds.mds_osc_exp, soqc);
1396         if (!rc) {
1397                 oqctl->qc_dqblk.dqb_curspace = soqc->qc_dqblk.dqb_curspace;
1398                 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
1399         }
1400
1401         /* get block/inode usage from MDS */
1402         soqc->qc_dqblk.dqb_curspace = 0;
1403         soqc->qc_dqblk.dqb_curinodes = 0;
1404         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1405         rc1 = fsfilt_quotactl(obd, obd->u.obt.obt_sb, soqc);
1406         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1407         if (!rc1) {
1408                 oqctl->qc_dqblk.dqb_curspace += soqc->qc_dqblk.dqb_curspace;
1409                 oqctl->qc_dqblk.dqb_curinodes = soqc->qc_dqblk.dqb_curinodes;
1410                 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
1411         }
1412
1413         OBD_FREE_PTR(soqc);
1414
1415         RETURN(rc ? : rc1);
1416 }
1417
1418 int mds_get_dqblk(struct obd_device *obd, struct obd_quotactl *oqctl)
1419 {
1420         struct mds_obd *mds = &obd->u.mds;
1421         struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1422         struct lustre_dquot *dquot;
1423         struct obd_dqblk *dqblk = &oqctl->qc_dqblk;
1424         int rc;
1425         ENTRY;
1426
1427         down(&mds->mds_qonoff_sem);
1428         dqblk->dqb_valid = 0;
1429         if (qinfo->qi_files[oqctl->qc_type] == NULL)
1430                 GOTO(out, rc = -ESRCH);
1431
1432         dquot = lustre_dqget(obd, qinfo, oqctl->qc_id, oqctl->qc_type);
1433         if (IS_ERR(dquot))
1434                 GOTO(out, rc = PTR_ERR(dquot));
1435
1436         down(&dquot->dq_sem);
1437         dqblk->dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
1438         dqblk->dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
1439         dqblk->dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
1440         dqblk->dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
1441         dqblk->dqb_btime = dquot->dq_dqb.dqb_btime;
1442         dqblk->dqb_itime = dquot->dq_dqb.dqb_itime;
1443         dqblk->dqb_valid |= QIF_LIMITS | QIF_TIMES;
1444         up(&dquot->dq_sem);
1445
1446         lustre_dqput(dquot);
1447
1448         /* the usages in admin quota file is inaccurate */
1449         dqblk->dqb_curinodes = 0;
1450         dqblk->dqb_curspace = 0;
1451         rc = mds_get_space(obd, oqctl);
1452         EXIT;
1453 out:
1454         up(&mds->mds_qonoff_sem);
1455         return rc;
1456 }
1457
1458 int mds_get_obd_quota(struct obd_device *obd, struct obd_quotactl *oqctl)
1459 {
1460         struct lvfs_run_ctxt saved;
1461         int rc;
1462         ENTRY;
1463
1464         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1465         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
1466         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1467
1468         RETURN(rc);
1469 }
1470
1471
1472 /* FIXME we only recovery block limit by now, need recovery inode
1473  * limits also after CMD involved in */
1474 static int
1475 dquot_recovery(struct obd_device *obd, unsigned int id, unsigned short type)
1476 {
1477         struct mds_obd *mds = &obd->u.mds;
1478         struct lustre_quota_info *qinfo= &mds->mds_quota_info;
1479         struct lustre_dquot *dquot;
1480         struct obd_quotactl *qctl;
1481         __u64 total_limits = 0;
1482         int rc;
1483         ENTRY;
1484
1485         OBD_ALLOC_PTR(qctl);
1486         if (qctl == NULL)
1487                 RETURN(-ENOMEM);
1488
1489         dquot = lustre_dqget(obd, qinfo, id, type);
1490         if (IS_ERR(dquot)) {
1491                 CERROR("Get dquot failed. (rc:%ld)\n", PTR_ERR(dquot));
1492                 OBD_FREE_PTR(qctl);
1493                 RETURN(PTR_ERR(dquot));
1494         }
1495
1496         down(&dquot->dq_sem);
1497
1498         /* don't recovery the dquot without limits or under setting */
1499         if (!(dquot->dq_dqb.dqb_bhardlimit || dquot->dq_dqb.dqb_bsoftlimit) ||
1500             dquot->dq_status)
1501                 GOTO(skip, rc = 0);
1502         dquot->dq_status |= DQ_STATUS_RECOVERY;
1503
1504         up(&dquot->dq_sem);
1505
1506         /* get real bhardlimit from all slaves. */
1507         qctl->qc_cmd = Q_GETOQUOTA;
1508         qctl->qc_type = type;
1509         qctl->qc_id = id;
1510         qctl->qc_stat = QUOTA_RECOVERING;
1511         rc = obd_quotactl(mds->mds_osc_exp, qctl);
1512         if (rc)
1513                 GOTO(out, rc);
1514         total_limits = qctl->qc_dqblk.dqb_bhardlimit;
1515
1516         /* get real bhardlimit from master */
1517         rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, qctl);
1518         if (rc)
1519                 GOTO(out, rc);
1520         total_limits += qctl->qc_dqblk.dqb_bhardlimit;
1521
1522         /* amend the usage of the administrative quotafile */
1523         down(&mds->mds_qonoff_sem);
1524         down(&dquot->dq_sem);
1525
1526         dquot->dq_dqb.dqb_curspace = total_limits << QUOTABLOCK_BITS;
1527
1528         rc = fsfilt_dquot(obd, dquot, QFILE_WR_DQUOT);
1529         if (rc)
1530                 CERROR("write dquot failed! (rc:%d)\n", rc);
1531
1532         up(&dquot->dq_sem);
1533         up(&mds->mds_qonoff_sem);
1534         EXIT;
1535 out:
1536         down(&dquot->dq_sem);
1537         dquot->dq_status &= ~DQ_STATUS_RECOVERY;
1538 skip:
1539         up(&dquot->dq_sem);
1540
1541         lustre_dqput(dquot);
1542         OBD_FREE_PTR(qctl);
1543         return rc;
1544 }
1545
1546 struct qmaster_recov_thread_data {
1547         struct obd_device *obd;
1548         struct completion comp;
1549 };
1550
1551 static int qmaster_recovery_main(void *arg)
1552 {
1553         struct qmaster_recov_thread_data *data = arg;
1554         struct obd_device *obd = data->obd;
1555         int rc = 0;
1556         unsigned short type;
1557         ENTRY;
1558
1559         ptlrpc_daemonize("qmaster_recovd");
1560
1561         complete(&data->comp);
1562
1563         for (type = USRQUOTA; type < MAXQUOTAS; type++) {
1564                 struct mds_obd *mds = &obd->u.mds;
1565                 struct lustre_quota_info *qinfo = &mds->mds_quota_info;
1566                 struct list_head id_list;
1567                 struct dquot_id *dqid, *tmp;
1568
1569                 down(&mds->mds_qonoff_sem);
1570                 if (qinfo->qi_files[type] == NULL) {
1571                         up(&mds->mds_qonoff_sem);
1572                         continue;
1573                 }
1574                 CFS_INIT_LIST_HEAD(&id_list);
1575                 rc = fsfilt_qids(obd, qinfo->qi_files[type], NULL, type,
1576                                  &id_list);
1577                 up(&mds->mds_qonoff_sem);
1578
1579                 if (rc)
1580                         CERROR("error get ids from admin quotafile.(%d)\n", rc);
1581
1582                 list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
1583                         list_del_init(&dqid->di_link);
1584                         if (rc)
1585                                 goto free;
1586
1587                         rc = dquot_recovery(obd, dqid->di_id, type);
1588                         if (rc)
1589                                 CERROR("qmaster recovery failed! (id:%d type:%d"
1590                                        " rc:%d)\n", dqid->di_id, type, rc);
1591 free:
1592                         kfree(dqid);
1593                 }
1594         }
1595         RETURN(rc);
1596 }
1597
1598 int mds_quota_recovery(struct obd_device *obd)
1599 {
1600         struct mds_obd *mds = &obd->u.mds;
1601         struct lov_obd *lov = &mds->mds_osc_obd->u.lov;
1602         struct qmaster_recov_thread_data data;
1603         int rc = 0;
1604         ENTRY;
1605
1606         if (unlikely(!mds->mds_quota))
1607                 RETURN(rc);
1608
1609         mutex_down(&lov->lov_lock);
1610         if (lov->desc.ld_tgt_count != lov->desc.ld_active_tgt_count) {
1611                 CWARN("Not all osts are active, abort quota recovery\n");
1612                 mutex_up(&lov->lov_lock);
1613                 RETURN(rc);
1614         }
1615         mutex_up(&lov->lov_lock);
1616
1617         data.obd = obd;
1618         init_completion(&data.comp);
1619
1620         rc = kernel_thread(qmaster_recovery_main, &data, CLONE_VM|CLONE_FILES);
1621         if (rc < 0)
1622                 CERROR("Cannot start quota recovery thread: rc %d\n", rc);
1623
1624         wait_for_completion(&data.comp);
1625         RETURN(rc);
1626 }
1627
1628 #endif /* HAVE_QUOTA_SUPPORT */