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         default:
  78                 CERROR("%s: unsupported mds_quotactl command: %d\n",
  79                        obd->obd_name, oqctl->qc_cmd);
  80                 RETURN(-EFAULT);
  81         }
  82
  83         if (rc)
  84                 CDEBUG(D_INFO, "mds_quotactl admin quota command %d, id %u, "
  85                                "type %d, failed: rc = %d\n",
  86                        oqctl->qc_cmd, oqctl->qc_id, oqctl->qc_type, rc);
  87
  88         RETURN(rc);
  89 }
  90
  91 int filter_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
  92 {
  93         struct obd_device *obd = exp->exp_obd;
  94         struct obd_device_target *obt = &obd->u.obt;
  95         struct lvfs_run_ctxt saved;
  96         int rc = 0;
  97         ENTRY;
  98
  99         switch (oqctl->qc_cmd) {
 100         case Q_QUOTAON:
 101         case Q_QUOTAOFF:
 102                 if (!atomic_dec_and_test(&obt->obt_quotachecking)) {
 103                         CDEBUG(D_INFO, "other people are doing quotacheck\n");
 104                         atomic_inc(&obt->obt_quotachecking);
 105                         rc = -EBUSY;
 106                         break;
 107                 }
 108         case Q_GETOINFO:
 109         case Q_GETOQUOTA:
 110         case Q_GETQUOTA:
 111                 /* In recovery scenario, this pending dqacq/dqrel might have
 112                  * been processed by master successfully before it's dquot
 113                  * on master enter recovery mode. We must wait for this
 114                  * dqacq/dqrel done then return the correct limits to master */
 115                 if (oqctl->qc_stat == QUOTA_RECOVERING)
 116                         qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 117                                                  oqctl->qc_id, oqctl->qc_type,
 118                                                  1);
 119
 120                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 121                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 122                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 123
 124                 if (oqctl->qc_cmd == Q_QUOTAON || oqctl->qc_cmd == Q_QUOTAOFF) {
 125                         if (!rc)
 126                                 obt->obt_qctxt.lqc_status =
 127                                         (oqctl->qc_cmd == Q_QUOTAON) ? 1 : 0;
 128                         atomic_inc(&obt->obt_quotachecking);
 129                 }
 130                 break;
 131         case Q_INITQUOTA:
 132                 {
 133                 unsigned int uid = 0, gid = 0;
 134
 135                 /* Initialize quota limit to MIN_QLIMIT */
 136                 LASSERT(oqctl->qc_dqblk.dqb_valid == QIF_BLIMITS);
 137                 LASSERT(oqctl->qc_dqblk.dqb_bsoftlimit == 0);
 138
 139                 /* There might be a pending dqacq/dqrel (which is going to
 140                  * clear stale limits on slave). we should wait for it's
 141                  * completion then initialize limits */
 142                 qctxt_wait_pending_dqacq(&obd->u.obt.obt_qctxt,
 143                                          oqctl->qc_id, oqctl->qc_type, 1);
 144
 145                 if (!oqctl->qc_dqblk.dqb_bhardlimit)
 146                         goto adjust;
 147
 148                 LASSERT(oqctl->qc_dqblk.dqb_bhardlimit == MIN_QLIMIT);
 149                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 150                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 151
 152                 /* Update on-disk quota, in case of lose the changed limits
 153                  * (MIN_QLIMIT) on crash, which cannot be recovered.*/
 154                 if (!rc) {
 155                         oqctl->qc_cmd = Q_SYNC;
 156                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
 157                         oqctl->qc_cmd = Q_INITQUOTA;
 158                 }
 159                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 160
 161                 if (rc)
 162                         RETURN(rc);
 163 adjust:
 164                 /* Trigger qunit pre-acquire */
 165                 if (oqctl->qc_type == USRQUOTA)
 166                         uid = oqctl->qc_id;
 167                 else
 168                         gid = oqctl->qc_id;
 169
 170                 rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt,
 171                                         uid, gid, 1, 0);
 172                 break;
 173                 }
 174         default:
 175                 CERROR("%s: unsupported filter_quotactl command: %d\n",
 176                        obd->obd_name, oqctl->qc_cmd);
 177                 RETURN(-EFAULT);
 178         }
 179
 180         RETURN(rc);
 181 }
 182 #endif /* __KERNEL__ */
 183
 184 int client_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
 185 {
 186         struct ptlrpc_request *req;
 187         struct obd_quotactl *oqc;
 188         int size[2] = { sizeof(struct ptlrpc_body), sizeof(*oqctl) };
 189         int ver, opc, rc;
 190         ENTRY;
 191
 192         if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_MDC_NAME)) {
 193                 ver = LUSTRE_MDS_VERSION,
 194                 opc = MDS_QUOTACTL;
 195         } else if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 196                 ver = LUSTRE_OST_VERSION,
 197                 opc = OST_QUOTACTL;
 198         } else {
 199                 RETURN(-EINVAL);
 200         }
 201
 202         req = ptlrpc_prep_req(class_exp2cliimp(exp), ver, opc, 2, size, NULL);
 203         if (!req)
 204                 GOTO(out, rc = -ENOMEM);
 205
 206         oqc = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*oqctl));
 207         *oqc = *oqctl;
 208
 209         ptlrpc_req_set_repsize(req, 2, size);
 210
 211         rc = ptlrpc_queue_wait(req);
 212         if (!rc) {
 213                 oqc = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*oqc),
 214                                          lustre_swab_obd_quotactl);
 215                 if (oqc == NULL) {
 216                         CERROR ("Can't unpack obd_quotactl\n");
 217                         GOTO(out, rc = -EPROTO);
 218                 }
 219
 220                 *oqctl = *oqc;
 221         }
 222 out:
 223         ptlrpc_req_finished(req);
 224         RETURN (rc);
 225 }
 226
 227 int lov_quota_ctl(struct obd_export *exp, struct obd_quotactl *oqctl)
 228 {
 229         struct obd_device *obd = class_exp2obd(exp);
 230         struct lov_obd *lov = &obd->u.lov;
 231         __u64 curspace = 0;
 232         __u32 bhardlimit = 0;
 233         int i, rc = 0;
 234         ENTRY;
 235
 236         if (oqctl->qc_cmd != Q_QUOTAON && oqctl->qc_cmd != Q_QUOTAOFF &&
 237             oqctl->qc_cmd != Q_GETOQUOTA && oqctl->qc_cmd != Q_INITQUOTA) {
 238                 CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
 239                 RETURN(-EFAULT);
 240         }
 241
 242         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
 243                 int err;
 244
 245                 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
 246                         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 247                                 CERROR("ost %d is inactive\n", i);
 248                                 rc = -EIO;
 249                                 break;
 250                         } else {
 251                                 CDEBUG(D_HA, "ost %d is inactive\n", i);
 252                                 continue;
 253                         }
 254                 }
 255
 256                 err = obd_quotactl(lov->lov_tgts[i]->ltd_exp, oqctl);
 257                 if (err) {
 258                         if (lov->lov_tgts[i]->ltd_active && !rc)
 259                                 rc = err;
 260                         continue;
 261                 }
 262
 263                 if (oqctl->qc_cmd == Q_GETOQUOTA) {
 264                         curspace += oqctl->qc_dqblk.dqb_curspace;
 265                         bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
 266                 }
 267         }
 268
 269         if (oqctl->qc_cmd == Q_GETOQUOTA) {
 270                 oqctl->qc_dqblk.dqb_curspace = curspace;
 271                 oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
 272         }
 273         RETURN(rc);
 274 }
 275