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