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