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