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  *  lustre/quota/quota_ctl.c
   5  *
   6  *  Copyright (c) 2005 Cluster File Systems, Inc.
   7  *
   8  *   This file is part of Lustre, http://www.lustre.org.
   9  *
  10  *   No redistribution or use is permitted outside of Cluster File Systems, Inc.
  11  *
  12  */
  13 #ifndef EXPORT_SYMTAB
  14 # define EXPORT_SYMTAB
  15 #endif
  16 #define DEBUG_SUBSYSTEM S_MDS
  17
  18 #ifdef __KERNEL__
  19 # include <linux/version.h>
  20 # include <linux/module.h>
  21 # include <linux/init.h>
  22 # include <linux/fs.h>
  23 # include <linux/jbd.h>
  24 # include <linux/ext3_fs.h>
  25 # include <linux/quota.h>
  26 # if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
  27 #  include <linux/smp_lock.h>
  28 #  include <linux/buffer_head.h>
  29 #  include <linux/workqueue.h>
  30 #  include <linux/mount.h>
  31 # else
  32 #  include <linux/locks.h>
  33 # endif
  34 #else /* __KERNEL__ */
  35 # include <liblustre.h>
  36 #endif
  37
  38 #include <obd_class.h>
  39 #include <lustre_mds.h>
  40 #include <lustre_dlm.h>
  41 #include <lustre_cfg.h>
  42 #include <obd_ost.h>
  43 #include <lustre_fsfilt.h>
  44 #include <lustre_quota.h>
  45 #include "quota_internal.h"
  46
  47 #ifdef __KERNEL__
  48 int mds_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
  49 {
  50         struct obd_device *obd = exp->exp_obd;
  51         int rc = 0;
  52         ENTRY;
  53
  54         switch (oqctl->qc_cmd) {
  55         case Q_QUOTAON:
  56                 rc = mds_quota_on(obd, oqctl);
  57                 break;
  58         case Q_QUOTAOFF:
  59                 mds_quota_off(obd, oqctl);
  60                 break;
  61         case Q_SETINFO:
  62                 rc = mds_set_dqinfo(obd, oqctl);
  63                 break;
  64         case Q_GETINFO:
  65                 rc = mds_get_dqinfo(obd, oqctl);
  66                 break;
  67         case Q_SETQUOTA:
  68                 rc = mds_set_dqblk(obd, oqctl);
  69                 break;
  70         case Q_GETQUOTA:
  71                 rc = mds_get_dqblk(obd, oqctl);
  72                 break;
  73         case Q_GETOINFO:
  74         case Q_GETOQUOTA:
  75                 rc = mds_get_obd_quota(obd, oqctl);
  76                 break;
  77         case LUSTRE_Q_INVALIDATE:
  78                 rc = mds_quota_invalidate(obd, oqctl);
  79                 break;
  80         default:
  81                 CERROR("%s: unsupported mds_quotactl command: %d\n",
  82                        obd->obd_name, oqctl->qc_cmd);
  83                 RETURN(-EFAULT);
  84         }
  85
  86         if (rc)
  87                 CDEBUG(D_INFO, "mds_quotactl admin quota command %d, id %u, "
  88                                "type %d, failed: rc = %d\n",
  89                        oqctl->qc_cmd, oqctl->qc_id, oqctl->qc_type, rc);
  90
  91         RETURN(rc);
  92 }
  93
  94 int filter_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
  95 {
  96         struct obd_device *obd = exp->exp_obd;
  97         struct obd_device_target *obt = &obd->u.obt;
  98         struct lvfs_run_ctxt saved;
  99         int rc = 0;
 100         ENTRY;
 101
 102         switch (oqctl->qc_cmd) {
 103         case Q_QUOTAON:
 104         case Q_QUOTAOFF:
 105                 if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 106                         CDEBUG(D_INFO, "other people are doing quotacheck\n");
 107                         atomic_inc(&obt->obt_quotachecking);
 108                         rc = -EBUSY;
 109                         break;
 110                 }
 111         case Q_GETOINFO:
 112         case Q_GETOQUOTA:
 113         case Q_GETQUOTA:
 114                 /* In recovery scenario, this pending dqacq/dqrel might have
 115                  * been processed by master successfully before it's dquot
 116                  * on master enter recovery mode. We must wait for this
 117                  * dqacq/dqrel done then return the correct limits to master */
 118                 if (oqctl->qc_stat == QUOTA_RECOVERING)
 119                         qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 120                                                  oqctl->qc_id, oqctl->qc_type,
 121                                                  1);
 122
 123                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 124                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 125                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 126
 127                 if (oqctl->qc_cmd == Q_QUOTAON || oqctl->qc_cmd == Q_QUOTAOFF) {
 128                         if (!rc)
 129                                 obt->obt_qctxt.lqc_status =
 130                                         (oqctl->qc_cmd == Q_QUOTAON) ? 1 : 0;
 131                         atomic_inc(&obt->obt_quotachecking);
 132                 }
 133                 break;
 134         case Q_SETQUOTA:
 135                 /* currently, it is only used for nullifying the quota */
 136                 qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 137                                          oqctl->qc_id, oqctl->qc_type, 1);
 138
 139                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 140                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 141
 142                 if (!rc) {
 143                         oqctl->qc_cmd = Q_SYNC;
 144                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 145                         oqctl->qc_cmd = Q_SETQUOTA;
 146                 }
 147                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 148                 break;
 149         case Q_INITQUOTA:
 150                 {
 151                 unsigned int uid = 0, gid = 0;
 152
 153                 /* Initialize quota limit to MIN_QLIMIT */
 154                 LASSERT(oqctl->qc_dqblk.dqb_valid == QIF_BLIMITS);
 155                 LASSERT(oqctl->qc_dqblk.dqb_bsoftlimit == 0);
 156
 157                 /* There might be a pending dqacq/dqrel (which is going to
 158                  * clear stale limits on slave). we should wait for it's
 159                  * completion then initialize limits */
 160                 qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 161                                          oqctl->qc_id, oqctl->qc_type, 1);
 162
 163                 if (!oqctl->qc_dqblk.dqb_bhardlimit)
 164                         goto adjust;
 165
 166                 LASSERT(oqctl->qc_dqblk.dqb_bhardlimit == MIN_QLIMIT);
 167                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 168                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 169
 170                 /* Update on-disk quota, in case of lose the changed limits
 171                  * (MIN_QLIMIT) on crash, which cannot be recovered.*/
 172                 if (!rc) {
 173                         oqctl->qc_cmd = Q_SYNC;
 174                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 175                         oqctl->qc_cmd = Q_INITQUOTA;
 176                 }
 177                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 178
 179                 if (rc)
 180                         RETURN(rc);
 181 adjust:
 182                 /* Trigger qunit pre-acquire */
 183                 if (oqctl->qc_type == USRQUOTA)
 184                         uid = oqctl->qc_id;
 185                 else
 186                         gid = oqctl->qc_id;
 187
 188                 rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt,
 189                                         uid, gid, 1, 0);
 190                 break;
 191                 }
 192         default:
 193                 CERROR("%s: unsupported filter_quotactl command: %d\n",
 194                        obd->obd_name, oqctl->qc_cmd);
 195                 RETURN(-EFAULT);
 196         }
 197
 198         RETURN(rc);
 199 }
 200 #endif /* __KERNEL__ */
 201
 202 int client_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
 203 {
 204         struct ptlrpc_request *req;
 205         struct obd_quotactl *oqc;
 206         int size[2] = { sizeof(struct ptlrpc_body), sizeof(*oqctl) };
 207         int ver, opc, rc;
 208         ENTRY;
 209
 210         if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_MDC_NAME)) {
 211                 ver = LUSTRE_MDS_VERSION,
 212                 opc = MDS_QUOTACTL;
 213         } else if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 214                 ver = LUSTRE_OST_VERSION,
 215                 opc = OST_QUOTACTL;
 216         } else {
 217                 RETURN(-EINVAL);
 218         }
 219
 220         req = ptlrpc_prep_req(class_exp2cliimp(exp), ver, opc, 2, size, NULL);
 221         if (!req)
 222                 GOTO(out, rc = -ENOMEM);
 223
 224         oqc = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*oqctl));
 225         *oqc = *oqctl;
 226
 227         ptlrpc_req_set_repsize(req, 2, size);
 228
 229         rc = ptlrpc_queue_wait(req);
 230         oqc = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*oqc),
 231                                  lustre_swab_obd_quotactl);
 232         if (oqc == NULL) {
 233                 CERROR ("Can't unpack obd_quotactl\n");
 234                 GOTO(out, rc = -EPROTO);
 235         }
 236
 237         *oqctl = *oqc;
 238         EXIT;
 239 out:
 240         ptlrpc_req_finished(req);
 241         return rc;
 242 }
 243
 244 int lov_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
 245 {
 246         struct obd_device *obd = class_exp2obd(exp);
 247         struct lov_obd *lov = &obd->u.lov;
 248         __u64 curspace = 0;
 249         __u32 bhardlimit = 0;
 250         int i, rc = 0;
 251         ENTRY;
 252
 253         if (oqctl->qc_cmd != Q_QUOTAON && oqctl->qc_cmd != Q_QUOTAOFF &&
 254             oqctl->qc_cmd != Q_GETOQUOTA && oqctl->qc_cmd != Q_INITQUOTA &&
 255             oqctl->qc_cmd != Q_SETQUOTA) {
 256                 CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
 257                 RETURN(-EFAULT);
 258         }
 259
 260         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
 261                 int err;
 262
 263                 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
 264                         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 265                                 CERROR("ost %d is inactive\n", i);
 266                                 rc = -EIO;
 267                         } else {
 268                                 CDEBUG(D_HA, "ost %d is inactive\n", i);
 269                         }
 270                         continue;
 271                 }
 272
 273                 err = obd_quotactl(lov->lov_tgts[i]->ltd_exp, oqctl);
 274                 if (err) {
 275                         if (lov->lov_tgts[i]->ltd_active && !rc)
 276                                 rc = err;
 277                         continue;
 278                 }
 279
 280                 if (oqctl->qc_cmd == Q_GETOQUOTA) {
 281                         curspace += oqctl->qc_dqblk.dqb_curspace;
 282                         bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
 283                 }
 284         }
 285
 286         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 287                 oqctl->qc_dqblk.dqb_curspace = curspace;
 288                 oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
 289         }
 290         RETURN(rc);
 291 }
 292