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