lustre/quota/quota_ctl.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 #ifndef EXPORT_SYMTAB
  37 # define EXPORT_SYMTAB
  38 #endif
  39 #define DEBUG_SUBSYSTEM S_LQUOTA
  40
  41 #ifdef __KERNEL__
  42 # include <linux/version.h>
  43 # include <linux/module.h>
  44 # include <linux/init.h>
  45 # include <linux/fs.h>
  46 # include <linux/jbd.h>
  47 # include <linux/quota.h>
  48 # include <linux/smp_lock.h>
  49 # include <linux/buffer_head.h>
  50 # include <linux/workqueue.h>
  51 # include <linux/mount.h>
  52 #else /* __KERNEL__ */
  53 # include <liblustre.h>
  54 #endif
  55
  56 #include <obd_class.h>
  57 #include <lustre_mds.h>
  58 #include <lustre_dlm.h>
  59 #include <lustre_cfg.h>
  60 #include <obd_ost.h>
  61 #include <lustre_fsfilt.h>
  62 #include <lustre_quota.h>
  63 #include "quota_internal.h"
  64
  65 #ifdef HAVE_QUOTA_SUPPORT
  66 #ifdef __KERNEL__
  67
  68 /* When quotaon, build a lqs for every uid/gid who has been set limitation
  69  * for quota. After quota_search_lqs, it will hold one ref for the lqs.
  70  * It will be released when qctxt_cleanup() is executed b=18574 */
  71 void build_lqs(struct obd_device *obd)
  72 {
  73         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
  74         struct list_head id_list;
  75         int i, rc;
  76
  77         INIT_LIST_HEAD(&id_list);
  78         for (i = 0; i < MAXQUOTAS; i++) {
  79                 struct dquot_id *dqid, *tmp;
  80
  81 #ifndef KERNEL_SUPPORTS_QUOTA_READ
  82                 rc = fsfilt_qids(obd, sb_dqopt(qctxt->lqc_sb)->files[i], NULL,
  83                                  i, &id_list);
  84 #else
  85                 rc = fsfilt_qids(obd, NULL, sb_dqopt(qctxt->lqc_sb)->files[i],
  86                                  i, &id_list);
  87 #endif
  88                 if (rc) {
  89                         CDEBUG(D_ERROR, "fail to get %s qids!\n",
  90                                i ? "group" : "user");
  91                         continue;
  92                 }
  93
  94                 list_for_each_entry_safe(dqid, tmp, &id_list,
  95                                          di_link) {
  96                         struct lustre_qunit_size *lqs;
  97
  98                         list_del_init(&dqid->di_link);
  99                         lqs = quota_search_lqs(LQS_KEY(i, dqid->di_id),
 100                                                qctxt, 1);
 101                         if (lqs && !IS_ERR(lqs)) {
 102                                 lqs->lqs_flags |= dqid->di_flag;
 103                                 lqs_putref(lqs);
 104                         } else {
 105                                 CDEBUG(D_ERROR, "fail to create a lqs"
 106                                        "(%s id: %u)!\n", i ? "group" : "user",
 107                                        dqid->di_id);
 108                         }
 109
 110                         OBD_FREE_PTR(dqid);
 111                 }
 112         }
 113 }
 114
 115 int mds_quota_ctl(struct obd_device *obd, struct obd_export *unused,
 116                   struct obd_quotactl *oqctl)
 117 {
 118         struct obd_device_target *obt = &obd->u.obt;
 119         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 120         struct timeval work_start;
 121         struct timeval work_end;
 122         long timediff;
 123         int rc = 0;
 124         ENTRY;
 125
 126         do_gettimeofday(&work_start);
 127         switch (oqctl->qc_cmd) {
 128         case Q_QUOTAON:
 129                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
 130                 rc = mds_quota_on(obd, oqctl);
 131                 /* when quotaon, create lqs for every quota uid/gid b=18574 */
 132                 build_lqs(obd);
 133                 break;
 134         case Q_QUOTAOFF:
 135                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
 136                 rc = mds_quota_off(obd, oqctl);
 137                 break;
 138         case Q_SETINFO:
 139                 rc = mds_set_dqinfo(obd, oqctl);
 140                 break;
 141         case Q_GETINFO:
 142                 rc = mds_get_dqinfo(obd, oqctl);
 143                 break;
 144         case Q_SETQUOTA:
 145                 rc = mds_set_dqblk(obd, oqctl);
 146                 break;
 147         case Q_GETQUOTA:
 148                 rc = mds_get_dqblk(obd, oqctl);
 149                 break;
 150         case Q_GETOINFO:
 151         case Q_GETOQUOTA:
 152                 rc = mds_get_obd_quota(obd, oqctl);
 153                 break;
 154         case LUSTRE_Q_INVALIDATE:
 155                 rc = mds_quota_invalidate(obd, oqctl);
 156                 break;
 157         case LUSTRE_Q_FINVALIDATE:
 158                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
 159                 rc = mds_quota_finvalidate(obd, oqctl);
 160                 break;
 161         default:
 162                 CERROR("%s: unsupported mds_quotactl command: %d\n",
 163                        obd->obd_name, oqctl->qc_cmd);
 164                 RETURN(-EFAULT);
 165         }
 166
 167         if (rc)
 168                 CDEBUG(D_INFO, "mds_quotactl admin quota command %d, id %u, "
 169                                "type %d, failed: rc = %d\n",
 170                        oqctl->qc_cmd, oqctl->qc_id, oqctl->qc_type, rc);
 171         do_gettimeofday(&work_end);
 172         timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
 173         lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_QUOTA_CTL, timediff);
 174
 175         RETURN(rc);
 176 }
 177
 178 int filter_quota_ctl(struct obd_device *unused, struct obd_export *exp,
 179                      struct obd_quotactl *oqctl)
 180 {
 181         struct obd_device *obd = exp->exp_obd;
 182         struct obd_device_target *obt = &obd->u.obt;
 183         struct lvfs_run_ctxt saved;
 184         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 185         struct lustre_qunit_size *lqs;
 186         void *handle = NULL;
 187         struct timeval work_start;
 188         struct timeval work_end;
 189         long timediff;
 190         int rc = 0;
 191         ENTRY;
 192
 193         do_gettimeofday(&work_start);
 194         switch (oqctl->qc_cmd) {
 195         case Q_FINVALIDATE:
 196         case Q_QUOTAON:
 197         case Q_QUOTAOFF:
 198                 if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 199                         CDEBUG(D_INFO, "other people are doing quotacheck\n");
 200                         atomic_inc(&obt->obt_quotachecking);
 201                         rc = -EBUSY;
 202                         break;
 203                 }
 204                 if (oqctl->qc_cmd == Q_FINVALIDATE &&
 205                     (obt->obt_qctxt.lqc_flags & UGQUOTA2LQC(oqctl->qc_type))) {
 206                         atomic_inc(&obt->obt_quotachecking);
 207                         rc = -EBUSY;
 208                         break;
 209                 }
 210                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
 211         case Q_GETOINFO:
 212         case Q_GETOQUOTA:
 213         case Q_GETQUOTA:
 214                 /* In recovery scenario, this pending dqacq/dqrel might have
 215                  * been processed by master successfully before it's dquot
 216                  * on master enter recovery mode. We must wait for this
 217                  * dqacq/dqrel done then return the correct limits to master */
 218                 if (oqctl->qc_stat == QUOTA_RECOVERING)
 219                         handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
 220
 221                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 222                 rc = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
 223                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 224
 225                 if (oqctl->qc_stat == QUOTA_RECOVERING)
 226                         quota_unbarrier(handle);
 227
 228                 if (oqctl->qc_cmd == Q_QUOTAON || oqctl->qc_cmd == Q_QUOTAOFF ||
 229                     oqctl->qc_cmd == Q_FINVALIDATE) {
 230                         if (!rc && oqctl->qc_cmd == Q_QUOTAON)
 231                                 obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
 232                         if (!rc && oqctl->qc_cmd == Q_QUOTAOFF)
 233                                 obt->obt_qctxt.lqc_flags &= ~UGQUOTA2LQC(oqctl->qc_type);
 234                         atomic_inc(&obt->obt_quotachecking);
 235                 }
 236
 237                 /* when quotaon, create lqs for every quota uid/gid b=18574 */
 238                 if (oqctl->qc_cmd == Q_QUOTAON)
 239                         build_lqs(obd);
 240                 break;
 241         case Q_SETQUOTA:
 242                 /* currently, it is only used for nullifying the quota */
 243                 handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
 244
 245                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 246                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 247
 248                 if (!rc) {
 249                         oqctl->qc_cmd = Q_SYNC;
 250                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 251                         oqctl->qc_cmd = Q_SETQUOTA;
 252                 }
 253                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 254                 quota_unbarrier(handle);
 255
 256                 lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
 257                                        qctxt, 0);
 258                 if (lqs == NULL || IS_ERR(lqs)){
 259                         CDEBUG(D_ERROR, "fail to create lqs when setquota\n");
 260                 } else {
 261                         lqs->lqs_flags &= ~QB_SET;
 262                         lqs_putref(lqs);
 263                 }
 264
 265                 break;
 266         case Q_INITQUOTA:
 267                 {
 268                 unsigned int id[MAXQUOTAS] = { 0, 0 };
 269
 270                 /* Initialize quota limit to MIN_QLIMIT */
 271                 LASSERT(oqctl->qc_dqblk.dqb_valid == QIF_BLIMITS);
 272                 LASSERT(oqctl->qc_dqblk.dqb_bsoftlimit == 0);
 273
 274                 if (!oqctl->qc_dqblk.dqb_bhardlimit)
 275                         goto adjust;
 276
 277                /* There might be a pending dqacq/dqrel (which is going to
 278                  * clear stale limits on slave). we should wait for it's
 279                  * completion then initialize limits */
 280                 handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
 281                 LASSERT(oqctl->qc_dqblk.dqb_bhardlimit == MIN_QLIMIT);
 282                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 283                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 284
 285                 /* Update on-disk quota, in case of lose the changed limits
 286                  * (MIN_QLIMIT) on crash, which cannot be recovered.*/
 287                 if (!rc) {
 288                         oqctl->qc_cmd = Q_SYNC;
 289                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 290                         oqctl->qc_cmd = Q_INITQUOTA;
 291                 }
 292                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 293                 quota_unbarrier(handle);
 294
 295                 if (rc)
 296                         RETURN(rc);
 297 adjust:
 298                 lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
 299                                        qctxt, 1);
 300                 if (lqs == NULL || IS_ERR(lqs)){
 301                         CDEBUG(D_ERROR, "fail to create lqs when setquota\n");
 302                         break;
 303                 } else {
 304                         lqs->lqs_flags |= QB_SET;
 305                         lqs_putref(lqs);
 306                 }
 307
 308                 /* Trigger qunit pre-acquire */
 309                 if (oqctl->qc_type == USRQUOTA)
 310                         id[USRQUOTA] = oqctl->qc_id;
 311                 else
 312                         id[GRPQUOTA] = oqctl->qc_id;
 313
 314                 rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt,
 315                                         id, 1, 0, NULL);
 316                 if (rc == -EDQUOT || rc == -EBUSY) {
 317                         CDEBUG(D_QUOTA, "rc: %d.\n", rc);
 318                         rc = 0;
 319                 }
 320
 321                 break;
 322                 }
 323         default:
 324                 CERROR("%s: unsupported filter_quotactl command: %d\n",
 325                        obd->obd_name, oqctl->qc_cmd);
 326                 RETURN(-EFAULT);
 327         }
 328         do_gettimeofday(&work_end);
 329         timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
 330         lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_QUOTA_CTL, timediff);
 331
 332         RETURN(rc);
 333 }
 334 #endif /* __KERNEL__ */
 335 #endif
 336
 337 int client_quota_ctl(struct obd_device *unused, struct obd_export *exp,
 338                      struct obd_quotactl *oqctl)
 339 {
 340         struct ptlrpc_request   *req;
 341         struct obd_quotactl     *oqc;
 342         const struct req_format *rf;
 343         int                      ver, opc, rc;
 344         ENTRY;
 345
 346         if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_MDC_NAME)) {
 347                 rf  = &RQF_MDS_QUOTACTL;
 348                 ver = LUSTRE_MDS_VERSION,
 349                 opc = MDS_QUOTACTL;
 350         } else if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 351                 rf  = &RQF_OST_QUOTACTL;
 352                 ver = LUSTRE_OST_VERSION,
 353                 opc = OST_QUOTACTL;
 354         } else {
 355                 RETURN(-EINVAL);
 356         }
 357
 358         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), rf, ver, opc);
 359         if (req == NULL)
 360                 RETURN(-ENOMEM);
 361
 362         oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
 363         *oqc = *oqctl;
 364
 365         ptlrpc_request_set_replen(req);
 366
 367         rc = ptlrpc_queue_wait(req);
 368         if (rc) {
 369                 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
 370                 GOTO(out, rc);
 371         }
 372
 373         oqc = NULL;
 374         if (req->rq_repmsg)
 375                 oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
 376
 377         if (oqc == NULL) {
 378                 CERROR ("Can't unpack obd_quotactl\n");
 379                 GOTO(out, rc = -EPROTO);
 380         }
 381
 382         *oqctl = *oqc;
 383         EXIT;
 384 out:
 385         ptlrpc_req_finished(req);
 386         return rc;
 387 }
 388
 389 /**
 390  * For lmv, only need to send request to master MDT, and the master MDT will
 391  * process with other slave MDTs.
 392  */
 393 int lmv_quota_ctl(struct obd_device *unused, struct obd_export *exp,
 394                   struct obd_quotactl *oqctl)
 395 {
 396         struct obd_device *obd = class_exp2obd(exp);
 397         struct lmv_obd *lmv = &obd->u.lmv;
 398         struct lmv_tgt_desc *tgt = &lmv->tgts[0];
 399         int rc;
 400         ENTRY;
 401
 402         if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) {
 403                 CERROR("master lmv inactive\n");
 404                 RETURN(-EIO);
 405         }
 406
 407         rc = obd_quotactl(tgt->ltd_exp, oqctl);
 408         RETURN(rc);
 409 }
 410
 411 int lov_quota_ctl(struct obd_device *unused, struct obd_export *exp,
 412                   struct obd_quotactl *oqctl)
 413 {
 414         struct obd_device *obd = class_exp2obd(exp);
 415         struct lov_obd *lov = &obd->u.lov;
 416         struct lov_tgt_desc *tgt;
 417         __u64 curspace = 0;
 418         __u64 bhardlimit = 0;
 419         int i, rc = 0;
 420         ENTRY;
 421
 422         if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON &&
 423             oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF &&
 424             oqctl->qc_cmd != Q_GETOQUOTA &&
 425             oqctl->qc_cmd != Q_INITQUOTA &&
 426             oqctl->qc_cmd != LUSTRE_Q_SETQUOTA &&
 427             oqctl->qc_cmd != Q_FINVALIDATE) {
 428                 CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
 429                 RETURN(-EFAULT);
 430         }
 431
 432         /* for lov tgt */
 433         obd_getref(obd);
 434         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
 435                 int err;
 436
 437                 tgt = lov->lov_tgts[i];
 438                 if (!tgt || !tgt->ltd_active || tgt->ltd_reap) {
 439                         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 440                                 rc = -EREMOTEIO;
 441                                 CERROR("ost %d is inactive\n", i);
 442                         } else {
 443                                 CDEBUG(D_HA, "ost %d is inactive\n", i);
 444                         }
 445                         continue;
 446                 }
 447
 448                 err = obd_quotactl(tgt->ltd_exp, oqctl);
 449                 if (err) {
 450                         if (tgt->ltd_active && !rc)
 451                                 rc = err;
 452                         continue;
 453                 }
 454
 455                 if (oqctl->qc_cmd == Q_GETOQUOTA) {
 456                         curspace += oqctl->qc_dqblk.dqb_curspace;
 457                         bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
 458                 }
 459         }
 460         obd_putref(obd);
 461
 462         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 463                 oqctl->qc_dqblk.dqb_curspace = curspace;
 464                 oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
 465         }
 466         RETURN(rc);
 467 }