lustre/quota/quota_adjust_qunit.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 <linux/lustre_quota.h>
  63 #include <class_hash.h>
  64 #include "quota_internal.h"
  65
  66 #ifdef HAVE_QUOTA_SUPPORT
  67
  68 #ifdef __KERNEL__
  69 /**
  70  * This function is charge of recording lqs_ino_rec and
  71  * lqs_blk_rec. when a lquota slave checks a quota
  72  * request(check_cur_qunit) and finishes a quota
  73  * request(dqacq_completion), it will be called.
  74  * is_chk: whether it is checking quota; otherwise, it is finishing
  75  * is_acq: whether it is acquiring; otherwise, it is releasing
  76  */
  77 void quota_compute_lqs(struct qunit_data *qdata, struct lustre_qunit_size *lqs,
  78                       int is_chk, int is_acq)
  79 {
  80         int is_blk;
  81
  82         LASSERT(qdata && lqs);
  83         LASSERT_SPIN_LOCKED(&lqs->lqs_lock);
  84         is_blk = QDATA_IS_BLK(qdata);
  85
  86         if (is_chk) {
  87                 if (is_acq) {
  88                         if (is_blk)
  89                                 lqs->lqs_blk_rec += qdata->qd_count;
  90                         else
  91                                 lqs->lqs_ino_rec += qdata->qd_count;
  92                 } else {
  93                         if (is_blk)
  94                                 lqs->lqs_blk_rec -= qdata->qd_count;
  95                         else
  96                                 lqs->lqs_ino_rec -= qdata->qd_count;
  97                 }
  98         } else {
  99                 if (is_acq) {
 100                         if (is_blk)
 101                                 lqs->lqs_blk_rec -= qdata->qd_count;
 102                         else
 103                                 lqs->lqs_ino_rec -= qdata->qd_count;
 104                 } else {
 105                         if (is_blk)
 106                                 lqs->lqs_blk_rec += qdata->qd_count;
 107                         else
 108                                 lqs->lqs_ino_rec += qdata->qd_count;
 109                 }
 110         }
 111 }
 112
 113 void qdata_to_oqaq(struct qunit_data *qdata, struct quota_adjust_qunit *oqaq)
 114 {
 115         LASSERT(qdata);
 116         LASSERT(oqaq);
 117
 118         oqaq->qaq_flags = qdata->qd_flags;
 119         oqaq->qaq_id    = qdata->qd_id;
 120         if (QDATA_IS_ADJBLK(qdata))
 121                 oqaq->qaq_bunit_sz = qdata->qd_qunit;
 122         if (QDATA_IS_ADJINO(qdata))
 123                 oqaq->qaq_iunit_sz = qdata->qd_qunit;
 124 }
 125
 126 int quota_search_lqs(struct qunit_data *qdata, struct quota_adjust_qunit *oqaq,
 127                      struct lustre_quota_ctxt *qctxt,
 128                      struct lustre_qunit_size **lqs_return)
 129 {
 130         struct quota_adjust_qunit *oqaq_tmp = NULL;
 131         ENTRY;
 132
 133         LASSERT(*lqs_return == NULL);
 134         LASSERT(oqaq || qdata);
 135
 136         if (!oqaq) {
 137                 OBD_ALLOC_PTR(oqaq_tmp);
 138                 if (!oqaq_tmp)
 139                         RETURN(-ENOMEM);
 140                 qdata_to_oqaq(qdata, oqaq_tmp);
 141         } else {
 142                 oqaq_tmp = oqaq;
 143         }
 144
 145         *lqs_return = lustre_hash_lookup(qctxt->lqc_lqs_hash, oqaq_tmp);
 146         if (*lqs_return)
 147                 LQS_DEBUG((*lqs_return), "show lqs\n");
 148
 149         if (!oqaq)
 150                 OBD_FREE_PTR(oqaq_tmp);
 151         RETURN(0);
 152 }
 153
 154 int quota_create_lqs(struct qunit_data *qdata, struct quota_adjust_qunit *oqaq,
 155                      struct lustre_quota_ctxt *qctxt,
 156                      struct lustre_qunit_size **lqs_return)
 157 {
 158         struct lustre_qunit_size *lqs = NULL;
 159         int rc = 0;
 160         ENTRY;
 161
 162         LASSERT(*lqs_return == NULL);
 163         LASSERT(oqaq || qdata);
 164
 165         OBD_ALLOC_PTR(lqs);
 166         if (!lqs)
 167                 GOTO(out, rc = -ENOMEM);
 168
 169         if (!oqaq)
 170                 qdata_to_oqaq(qdata, &lqs->lqs_key);
 171         else
 172                 lqs->lqs_key = *oqaq;
 173
 174         spin_lock_init(&lqs->lqs_lock);
 175         lqs->lqs_bwrite_pending = 0;
 176         lqs->lqs_iwrite_pending = 0;
 177         lqs->lqs_ino_rec = 0;
 178         lqs->lqs_blk_rec = 0;
 179         lqs->lqs_id = lqs->lqs_key.qaq_id;
 180         lqs->lqs_flags = QAQ_IS_GRP(&lqs->lqs_key);
 181         lqs->lqs_bunit_sz = qctxt->lqc_bunit_sz;
 182         lqs->lqs_iunit_sz = qctxt->lqc_iunit_sz;
 183         lqs->lqs_btune_sz = qctxt->lqc_btune_sz;
 184         lqs->lqs_itune_sz = qctxt->lqc_itune_sz;
 185         lqs->lqs_ctxt = qctxt;
 186         if (qctxt->lqc_handler) {
 187                 lqs->lqs_last_bshrink  = 0;
 188                 lqs->lqs_last_ishrink  = 0;
 189         }
 190         lqs_initref(lqs);
 191         rc = lustre_hash_add_unique(qctxt->lqc_lqs_hash,
 192                                     &lqs->lqs_key, &lqs->lqs_hash);
 193         LQS_DEBUG(lqs, "create lqs\n");
 194         if (!rc) {
 195                 lqs_getref(lqs);
 196                 *lqs_return = lqs;
 197         }
 198 out:
 199         if (rc && lqs)
 200                 OBD_FREE_PTR(lqs);
 201         RETURN(rc);
 202 }
 203
 204 int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
 205                            struct lustre_quota_ctxt *qctxt)
 206 {
 207         struct lustre_qunit_size *lqs = NULL;
 208         unsigned long *lbunit, *liunit, *lbtune, *litune;
 209         signed long b_tmp = 0, i_tmp = 0;
 210         cfs_time_t time_limit = 0;
 211         int rc = 0;
 212         ENTRY;
 213
 214         LASSERT(qctxt);
 215 search_lqs:
 216         rc = quota_search_lqs(NULL, oqaq, qctxt, &lqs);
 217
 218         /* deleting the lqs, because a user sets lfs quota 0 0 0 0  */
 219         if (!oqaq->qaq_bunit_sz && !oqaq->qaq_iunit_sz && QAQ_IS_ADJBLK(oqaq) &&
 220             QAQ_IS_ADJINO(oqaq)) {
 221                 if (lqs) {
 222                         LQS_DEBUG(lqs, "release lqs\n");
 223                         /* this is for quota_search_lqs */
 224                         lqs_putref(lqs);
 225                         /* kill lqs */
 226                         lqs_putref(lqs);
 227                 }
 228                 RETURN(rc);
 229         }
 230
 231         if (!lqs) {
 232                 rc = quota_create_lqs(NULL, oqaq, qctxt, &lqs);
 233                 if (rc == -EALREADY)
 234                         goto search_lqs;
 235                 if (rc < 0)
 236                         RETURN(rc);
 237         }
 238
 239         lbunit = &lqs->lqs_bunit_sz;
 240         liunit = &lqs->lqs_iunit_sz;
 241         lbtune = &lqs->lqs_btune_sz;
 242         litune = &lqs->lqs_itune_sz;
 243
 244         CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
 245         spin_lock(&lqs->lqs_lock);
 246         /* adjust the slave's block qunit size */
 247         if (QAQ_IS_ADJBLK(oqaq)) {
 248                 cfs_duration_t sec = cfs_time_seconds(qctxt->lqc_switch_seconds);
 249
 250                 b_tmp = *lbunit - oqaq->qaq_bunit_sz;
 251
 252                 if (qctxt->lqc_handler && b_tmp > 0)
 253                         lqs->lqs_last_bshrink = cfs_time_current();
 254
 255                 if (qctxt->lqc_handler && b_tmp < 0) {
 256                         time_limit = cfs_time_add(lqs->lqs_last_bshrink, sec);
 257                         if (!lqs->lqs_last_bshrink ||
 258                             cfs_time_after(cfs_time_current(), time_limit)) {
 259                                 *lbunit = oqaq->qaq_bunit_sz;
 260                                 *lbtune = (*lbunit) / 2;
 261                         } else {
 262                                 b_tmp = 0;
 263                         }
 264                 } else {
 265                         *lbunit = oqaq->qaq_bunit_sz;
 266                         *lbtune = (*lbunit) / 2;
 267                 }
 268         }
 269
 270         /* adjust the slave's file qunit size */
 271         if (QAQ_IS_ADJINO(oqaq)) {
 272                 i_tmp = *liunit - oqaq->qaq_iunit_sz;
 273
 274                 if (qctxt->lqc_handler && i_tmp > 0)
 275                         lqs->lqs_last_ishrink  = cfs_time_current();
 276
 277                 if (qctxt->lqc_handler && i_tmp < 0) {
 278                         time_limit = cfs_time_add(lqs->lqs_last_ishrink,
 279                                                   cfs_time_seconds(qctxt->
 280                                                   lqc_switch_seconds));
 281                         if (!lqs->lqs_last_ishrink ||
 282                             cfs_time_after(cfs_time_current(), time_limit)) {
 283                                 *liunit = oqaq->qaq_iunit_sz;
 284                                 *litune = (*liunit) / 2;
 285                         } else {
 286                                 i_tmp = 0;
 287                         }
 288                 } else {
 289                         *liunit = oqaq->qaq_iunit_sz;
 290                         *litune = (*liunit) / 2;
 291                 }
 292         }
 293         spin_unlock(&lqs->lqs_lock);
 294         CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
 295
 296         lqs_putref(lqs);
 297
 298         if (b_tmp > 0)
 299                 rc |= LQS_BLK_DECREASE;
 300         else if (b_tmp < 0)
 301                 rc |= LQS_BLK_INCREASE;
 302
 303         if (i_tmp > 0)
 304                 rc |= LQS_INO_DECREASE;
 305         else if (i_tmp < 0)
 306                 rc |= LQS_INO_INCREASE;
 307
 308         RETURN(rc);
 309 }
 310
 311 int filter_quota_adjust_qunit(struct obd_export *exp,
 312                               struct quota_adjust_qunit *oqaq,
 313                               struct lustre_quota_ctxt *qctxt)
 314 {
 315         struct obd_device *obd = exp->exp_obd;
 316         unsigned int id[MAXQUOTAS] = { 0, 0 };
 317         int rc = 0;
 318         ENTRY;
 319
 320         LASSERT(oqaq);
 321         LASSERT(QAQ_IS_ADJBLK(oqaq));
 322         rc = quota_adjust_slave_lqs(oqaq, qctxt);
 323         if (rc < 0) {
 324                 CERROR("adjust mds slave's qunit size failed!(rc:%d)\n", rc);
 325                 RETURN(rc);
 326         }
 327         if (QAQ_IS_GRP(oqaq))
 328                 id[GRPQUOTA] = oqaq->qaq_id;
 329         else
 330                 id[USRQUOTA] = oqaq->qaq_id;
 331
 332         if (rc > 0) {
 333                 rc = qctxt_adjust_qunit(obd, qctxt, id, 1, 0, NULL);
 334                 if (rc == -EDQUOT || rc == -EBUSY ||
 335                     rc == QUOTA_REQ_RETURNED || rc == -EAGAIN) {
 336                         CDEBUG(D_QUOTA, "rc: %d.\n", rc);
 337                         rc = 0;
 338                 }
 339                 if (rc)
 340                         CERROR("slave adjust block quota failed!(rc:%d)\n", rc);
 341         }
 342         RETURN(rc);
 343 }
 344 #endif /* __KERNEL__ */
 345 #endif
 346
 347 int client_quota_adjust_qunit(struct obd_export *exp,
 348                               struct quota_adjust_qunit *oqaq,
 349                               struct lustre_quota_ctxt *qctxt)
 350 {
 351         struct ptlrpc_request *req;
 352         struct quota_adjust_qunit *oqa;
 353         int rc = 0;
 354         ENTRY;
 355
 356         /* client don't support this kind of operation, abort it */
 357         if (!(exp->exp_connect_flags & OBD_CONNECT_CHANGE_QS)) {
 358                 CDEBUG(D_QUOTA, "osc: %s don't support change qunit size\n",
 359                        exp->exp_obd->obd_name);
 360                 RETURN(rc);
 361         }
 362         if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
 363                 RETURN(-EINVAL);
 364
 365         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
 366                                         &RQF_OST_QUOTA_ADJUST_QUNIT,
 367                                         LUSTRE_OST_VERSION,
 368                                         OST_QUOTA_ADJUST_QUNIT);
 369         if (req == NULL)
 370                 RETURN(-ENOMEM);
 371
 372         oqa = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
 373         *oqa = *oqaq;
 374
 375         ptlrpc_request_set_replen(req);
 376
 377         rc = ptlrpc_queue_wait(req);
 378         if (rc)
 379                 CERROR("%s: %s failed: rc = %d\n", exp->exp_obd->obd_name,
 380                        __FUNCTION__, rc);
 381         ptlrpc_req_finished(req);
 382         RETURN (rc);
 383 }
 384
 385 int lov_quota_adjust_qunit(struct obd_export *exp,
 386                            struct quota_adjust_qunit *oqaq,
 387                            struct lustre_quota_ctxt *qctxt)
 388 {
 389         struct obd_device *obd = class_exp2obd(exp);
 390         struct lov_obd *lov = &obd->u.lov;
 391         int i, rc = 0;
 392         ENTRY;
 393
 394         if (!QAQ_IS_ADJBLK(oqaq)) {
 395                 CERROR("bad qaq_flags %x for lov obd.\n", oqaq->qaq_flags);
 396                 RETURN(-EFAULT);
 397         }
 398
 399         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
 400                 int err;
 401
 402                 if (!lov->lov_tgts[i]->ltd_active) {
 403                         CDEBUG(D_HA, "ost %d is inactive\n", i);
 404                         continue;
 405                 }
 406
 407                 err = obd_quota_adjust_qunit(lov->lov_tgts[i]->ltd_exp, oqaq,
 408                                              NULL);
 409                 if (err) {
 410                         if (lov->lov_tgts[i]->ltd_active && !rc)
 411                                 rc = err;
 412                         continue;
 413                 }
 414         }
 415         RETURN(rc);
 416 }