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_export *exp, struct obd_quotactl *oqctl)
  68 {
  69         struct obd_device *obd = exp->exp_obd;
  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                 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_export *exp, struct obd_quotactl *oqctl)
 125 {
 126         struct obd_device *obd = exp->exp_obd;
 127         struct obd_device_target *obt = &obd->u.obt;
 128         struct lvfs_run_ctxt saved;
 129         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 130         struct timeval work_start;
 131         struct timeval work_end;
 132         long timediff;
 133         int rc = 0;
 134         ENTRY;
 135
 136         do_gettimeofday(&work_start);
 137         switch (oqctl->qc_cmd) {
 138         case Q_FINVALIDATE:
 139         case Q_QUOTAON:
 140         case Q_QUOTAOFF:
 141                 if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 142                         CDEBUG(D_INFO, "other people are doing quotacheck\n");
 143                         atomic_inc(&obt->obt_quotachecking);
 144                         rc = -EBUSY;
 145                         break;
 146                 }
 147                 if (oqctl->qc_cmd == Q_FINVALIDATE &&
 148                     (obt->obt_qctxt.lqc_flags & UGQUOTA2LQC(oqctl->qc_type))) {
 149                         rc = -EBUSY;
 150                         break;
 151                 }
 152                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
 153         case Q_GETOINFO:
 154         case Q_GETOQUOTA:
 155         case Q_GETQUOTA:
 156                 /* In recovery scenario, this pending dqacq/dqrel might have
 157                  * been processed by master successfully before it's dquot
 158                  * on master enter recovery mode. We must wait for this
 159                  * dqacq/dqrel done then return the correct limits to master */
 160                 if (oqctl->qc_stat == QUOTA_RECOVERING)
 161                         qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 162                                                  oqctl->qc_id, oqctl->qc_type,
 163                                                  1);
 164
 165                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 166                 rc = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
 167                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 168
 169                 if (oqctl->qc_cmd == Q_QUOTAON || oqctl->qc_cmd == Q_QUOTAOFF ||
 170                     oqctl->qc_cmd == Q_FINVALIDATE) {
 171                         if (!rc && oqctl->qc_cmd == Q_QUOTAON)
 172                                 obt->obt_qctxt.lqc_flags |= UGQUOTA2LQC(oqctl->qc_type);
 173                         if (!rc && oqctl->qc_cmd == Q_QUOTAOFF)
 174                                 obt->obt_qctxt.lqc_flags &= ~UGQUOTA2LQC(oqctl->qc_type);
 175                         atomic_inc(&obt->obt_quotachecking);
 176                 }
 177                 break;
 178         case Q_SETQUOTA:
 179                 /* currently, it is only used for nullifying the quota */
 180                 qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 181                                          oqctl->qc_id, oqctl->qc_type, 1);
 182
 183                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 184                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 185
 186                 if (!rc) {
 187                         oqctl->qc_cmd = Q_SYNC;
 188                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 189                         oqctl->qc_cmd = Q_SETQUOTA;
 190                 }
 191                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 192                 break;
 193         case Q_INITQUOTA:
 194                 {
 195                 unsigned int uid = 0, gid = 0;
 196
 197                 /* Initialize quota limit to MIN_QLIMIT */
 198                 LASSERT(oqctl->qc_dqblk.dqb_valid == QIF_BLIMITS);
 199                 LASSERT(oqctl->qc_dqblk.dqb_bsoftlimit == 0);
 200
 201                 /* There might be a pending dqacq/dqrel (which is going to
 202                  * clear stale limits on slave). we should wait for it's
 203                  * completion then initialize limits */
 204                 qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 205                                          oqctl->qc_id, oqctl->qc_type, 1);
 206
 207                 if (!oqctl->qc_dqblk.dqb_bhardlimit)
 208                         goto adjust;
 209
 210                 LASSERT(oqctl->qc_dqblk.dqb_bhardlimit == MIN_QLIMIT);
 211                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 212                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 213
 214                 /* Update on-disk quota, in case of lose the changed limits
 215                  * (MIN_QLIMIT) on crash, which cannot be recovered.*/
 216                 if (!rc) {
 217                         oqctl->qc_cmd = Q_SYNC;
 218                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 219                         oqctl->qc_cmd = Q_INITQUOTA;
 220                 }
 221                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 222
 223                 if (rc)
 224                         RETURN(rc);
 225 adjust:
 226                 /* Trigger qunit pre-acquire */
 227                 if (oqctl->qc_type == USRQUOTA)
 228                         uid = oqctl->qc_id;
 229                 else
 230                         gid = oqctl->qc_id;
 231
 232                 rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt,
 233                                         uid, gid, 1, 0, NULL);
 234                 if (rc == -EDQUOT || rc == -EBUSY) {
 235                         CDEBUG(D_QUOTA, "rc: %d.\n", rc);
 236                         rc = 0;
 237                 }
 238
 239                 break;
 240                 }
 241         default:
 242                 CERROR("%s: unsupported filter_quotactl command: %d\n",
 243                        obd->obd_name, oqctl->qc_cmd);
 244                 RETURN(-EFAULT);
 245         }
 246         do_gettimeofday(&work_end);
 247         timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
 248         lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_QUOTA_CTL, timediff);
 249
 250         RETURN(rc);
 251 }
 252 #endif /* __KERNEL__ */
 253 #endif
 254
 255 int client_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
 256 {
 257         struct ptlrpc_request *req;
 258         struct obd_quotactl *oqc;
 259         __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*oqctl) };
 260         int ver, opc, rc;
 261         ENTRY;
 262
 263         if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_MDC_NAME)) {
 264                 ver = LUSTRE_MDS_VERSION,
 265                 opc = MDS_QUOTACTL;
 266         } else if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 267                 ver = LUSTRE_OST_VERSION,
 268                 opc = OST_QUOTACTL;
 269         } else {
 270                 RETURN(-EINVAL);
 271         }
 272
 273         req = ptlrpc_prep_req(class_exp2cliimp(exp), ver, opc, 2, size, NULL);
 274         if (!req)
 275                 GOTO(out, rc = -ENOMEM);
 276
 277         oqc = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*oqctl));
 278         *oqc = *oqctl;
 279
 280         ptlrpc_req_set_repsize(req, 2, size);
 281
 282         rc = ptlrpc_queue_wait(req);
 283         if (rc) {
 284                 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
 285                 GOTO(out, rc);
 286         }
 287
 288         oqc = NULL;
 289         if (req->rq_repmsg)
 290                 oqc = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*oqc),
 291                                          lustre_swab_obd_quotactl);
 292         if (oqc == NULL) {
 293                 CERROR ("Can't unpack obd_quotactl\n");
 294                 GOTO(out, rc = -EPROTO);
 295         }
 296
 297         *oqctl = *oqc;
 298         EXIT;
 299 out:
 300         ptlrpc_req_finished(req);
 301         return rc;
 302 }
 303
 304 int lov_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
 305 {
 306         struct obd_device *obd = class_exp2obd(exp);
 307         struct lov_obd *lov = &obd->u.lov;
 308         __u64 curspace = 0;
 309         __u64 bhardlimit = 0;
 310         int i, rc = 0;
 311         ENTRY;
 312
 313         if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON &&
 314             oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF &&
 315             oqctl->qc_cmd != Q_GETOQUOTA &&
 316             oqctl->qc_cmd != Q_INITQUOTA &&
 317             oqctl->qc_cmd != LUSTRE_Q_SETQUOTA &&
 318             oqctl->qc_cmd != Q_FINVALIDATE) {
 319                 CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
 320                 RETURN(-EFAULT);
 321         }
 322
 323         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
 324                 int err;
 325
 326                 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
 327                         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 328                                 CERROR("ost %d is inactive\n", i);
 329                                 rc = -EIO;
 330                         } else {
 331                                 CDEBUG(D_HA, "ost %d is inactive\n", i);
 332                         }
 333                         continue;
 334                 }
 335
 336                 err = obd_quotactl(lov->lov_tgts[i]->ltd_exp, oqctl);
 337                 if (err) {
 338                         if (lov->lov_tgts[i]->ltd_active && !rc)
 339                                 rc = err;
 340                         continue;
 341                 }
 342
 343                 if (oqctl->qc_cmd == Q_GETOQUOTA) {
 344                         curspace += oqctl->qc_dqblk.dqb_curspace;
 345                         bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
 346                 }
 347         }
 348
 349         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 350                 oqctl->qc_dqblk.dqb_curspace = curspace;
 351                 oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
 352         }
 353         RETURN(rc);
 354 }