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b=24055 a patch to detect if quota is turned on properly
[fs/lustre-release.git] / 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,
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25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. 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
68 int mds_quota_ctl(struct obd_device *obd, struct obd_export *unused,
69                   struct obd_quotactl *oqctl)
70 {
71         struct obd_device_target *obt = &obd->u.obt;
72         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
73         struct timeval work_start;
74         struct timeval work_end;
75         long timediff;
76         int rc = 0;
77         ENTRY;
78
79         cfs_gettimeofday(&work_start);
80         switch (oqctl->qc_cmd) {
81         case Q_QUOTAON:
82                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
83                 rc = mds_quota_on(obd, oqctl);
84                 break;
85         case Q_QUOTAOFF:
86                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
87                 rc = mds_quota_off(obd, oqctl);
88                 break;
89         case Q_SETINFO:
90                 rc = mds_set_dqinfo(obd, oqctl);
91                 break;
92         case Q_GETINFO:
93                 rc = mds_get_dqinfo(obd, oqctl);
94                 break;
95         case Q_SETQUOTA:
96                 rc = mds_set_dqblk(obd, oqctl);
97                 break;
98         case Q_GETQUOTA:
99                 rc = mds_get_dqblk(obd, oqctl);
100                 break;
101         case Q_GETOINFO:
102         case Q_GETOQUOTA:
103                 rc = mds_get_obd_quota(obd, oqctl);
104                 break;
105         case LUSTRE_Q_INVALIDATE:
106                 rc = mds_quota_invalidate(obd, oqctl);
107                 break;
108         case LUSTRE_Q_FINVALIDATE:
109                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
110                 rc = mds_quota_finvalidate(obd, oqctl);
111                 break;
112         default:
113                 CERROR("%s: unsupported mds_quotactl command: %d\n",
114                        obd->obd_name, oqctl->qc_cmd);
115                 RETURN(-EFAULT);
116         }
117
118         if (rc)
119                 CDEBUG(D_INFO, "mds_quotactl admin quota command %d, id %u, "
120                                "type %d, failed: rc = %d\n",
121                        oqctl->qc_cmd, oqctl->qc_id, oqctl->qc_type, rc);
122         cfs_gettimeofday(&work_end);
123         timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
124         lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_QUOTA_CTL, timediff);
125
126         RETURN(rc);
127 }
128
129 int filter_quota_ctl(struct obd_device *unused, struct obd_export *exp,
130                      struct obd_quotactl *oqctl)
131 {
132         struct obd_device *obd = exp->exp_obd;
133         struct obd_device_target *obt = &obd->u.obt;
134         struct lvfs_run_ctxt saved;
135         struct lustre_quota_ctxt *qctxt = &obt->obt_qctxt;
136         struct lustre_qunit_size *lqs;
137         void *handle = NULL;
138         struct timeval work_start;
139         struct timeval work_end;
140         long timediff;
141         int rc = 0;
142         ENTRY;
143
144         cfs_gettimeofday(&work_start);
145         switch (oqctl->qc_cmd) {
146         case Q_QUOTAON:
147                 oqctl->qc_id = obt->obt_qfmt;
148                 rc = generic_quota_on(obd, oqctl, 0);
149                 break;
150         case Q_FINVALIDATE:
151         case Q_QUOTAOFF:
152                 cfs_down(&obt->obt_quotachecking);
153                 if (oqctl->qc_cmd == Q_FINVALIDATE &&
154                     (obt->obt_qctxt.lqc_flags & UGQUOTA2LQC(oqctl->qc_type))) {
155                         CWARN("quota[%u] is on yet\n", oqctl->qc_type);
156                         cfs_up(&obt->obt_quotachecking);
157                         rc = -EBUSY;
158                         break;
159                 }
160                 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
161         case Q_GETOINFO:
162         case Q_GETOQUOTA:
163         case Q_GETQUOTA:
164                 /* In recovery scenario, this pending dqacq/dqrel might have
165                  * been processed by master successfully before it's dquot
166                  * on master enter recovery mode. We must wait for this
167                  * dqacq/dqrel done then return the correct limits to master */
168                 if (oqctl->qc_stat == QUOTA_RECOVERING)
169                         handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
170
171                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
172                 rc = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
173                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
174
175                 if (oqctl->qc_stat == QUOTA_RECOVERING)
176                         quota_unbarrier(handle);
177
178                 if (oqctl->qc_cmd == Q_QUOTAOFF ||
179                     oqctl->qc_cmd == Q_FINVALIDATE) {
180                         if (oqctl->qc_cmd == Q_QUOTAOFF) {
181                                 if (!rc)
182                                         obt->obt_qctxt.lqc_flags &=
183                                                 ~UGQUOTA2LQC(oqctl->qc_type);
184                                 else if (quota_is_off(qctxt, oqctl))
185                                                 rc = -EALREADY;
186                                 CDEBUG(D_QUOTA, "%s: quotaoff type:flags:rc "
187                                        "%u:%lu:%d\n", obd->obd_name,
188                                        oqctl->qc_type, qctxt->lqc_flags, rc);
189                         }
190                         cfs_up(&obt->obt_quotachecking);
191                 }
192
193                 break;
194         case Q_SETQUOTA:
195                 /* currently, it is only used for nullifying the quota */
196                 handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
197
198                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
199                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
200
201                 if (!rc) {
202                         oqctl->qc_cmd = Q_SYNC;
203                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
204                         oqctl->qc_cmd = Q_SETQUOTA;
205                 }
206                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
207                 quota_unbarrier(handle);
208
209                 lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
210                                        qctxt, 0);
211                 if (lqs == NULL || IS_ERR(lqs)){
212                         CERROR("fail to create lqs during setquota operation "
213                                "for %sid %u\n", oqctl->qc_type ? "g" : "u",
214                                oqctl->qc_id);
215                 } else {
216                         lqs->lqs_flags &= ~QB_SET;
217                         lqs_putref(lqs);
218                 }
219
220                 break;
221         case Q_INITQUOTA:
222                 {
223                 unsigned int id[MAXQUOTAS] = { 0, 0 };
224
225                 /* Initialize quota limit to MIN_QLIMIT */
226                 LASSERT(oqctl->qc_dqblk.dqb_valid == QIF_BLIMITS);
227                 LASSERT(oqctl->qc_dqblk.dqb_bsoftlimit == 0);
228
229                 if (!oqctl->qc_dqblk.dqb_bhardlimit)
230                         goto adjust;
231
232                /* There might be a pending dqacq/dqrel (which is going to
233                  * clear stale limits on slave). we should wait for it's
234                  * completion then initialize limits */
235                 handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
236                 LASSERT(oqctl->qc_dqblk.dqb_bhardlimit == MIN_QLIMIT);
237                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
238                 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
239
240                 /* Update on-disk quota, in case of lose the changed limits
241                  * (MIN_QLIMIT) on crash, which cannot be recovered.*/
242                 if (!rc) {
243                         oqctl->qc_cmd = Q_SYNC;
244                         fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
245                         oqctl->qc_cmd = Q_INITQUOTA;
246                 }
247                 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
248                 quota_unbarrier(handle);
249
250                 if (rc)
251                         RETURN(rc);
252 adjust:
253                 lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
254                                        qctxt, 1);
255                 if (lqs == NULL || IS_ERR(lqs)){
256                         CERROR("fail to create lqs during setquota operation "
257                                "for %sid %u\n", oqctl->qc_type ? "g" : "u",
258                                oqctl->qc_id);
259                         break;
260                 } else {
261                         lqs->lqs_flags |= QB_SET;
262                         lqs_putref(lqs);
263                 }
264
265                 /* Trigger qunit pre-acquire */
266                 if (oqctl->qc_type == USRQUOTA)
267                         id[USRQUOTA] = oqctl->qc_id;
268                 else
269                         id[GRPQUOTA] = oqctl->qc_id;
270
271                 rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt,
272                                         id, 1, 0, NULL);
273                 if (rc == -EDQUOT || rc == -EBUSY) {
274                         CDEBUG(D_QUOTA, "rc: %d.\n", rc);
275                         rc = 0;
276                 }
277
278                 break;
279                 }
280         default:
281                 CERROR("%s: unsupported filter_quotactl command: %d\n",
282                        obd->obd_name, oqctl->qc_cmd);
283                 RETURN(-EFAULT);
284         }
285         cfs_gettimeofday(&work_end);
286         timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
287         lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_QUOTA_CTL, timediff);
288
289         RETURN(rc);
290 }
291 #endif /* __KERNEL__ */
292 #endif
293
294 int client_quota_ctl(struct obd_device *unused, struct obd_export *exp,
295                      struct obd_quotactl *oqctl)
296 {
297         struct ptlrpc_request   *req;
298         struct obd_quotactl     *oqc;
299         const struct req_format *rf;
300         int                      ver, opc, rc;
301         ENTRY;
302
303         if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_MDC_NAME)) {
304                 rf  = &RQF_MDS_QUOTACTL;
305                 ver = LUSTRE_MDS_VERSION,
306                 opc = MDS_QUOTACTL;
307         } else if (!strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
308                 rf  = &RQF_OST_QUOTACTL;
309                 ver = LUSTRE_OST_VERSION,
310                 opc = OST_QUOTACTL;
311         } else {
312                 RETURN(-EINVAL);
313         }
314
315         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), rf, ver, opc);
316         if (req == NULL)
317                 RETURN(-ENOMEM);
318
319         oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
320         *oqc = *oqctl;
321
322         ptlrpc_request_set_replen(req);
323         ptlrpc_at_set_req_timeout(req);
324         req->rq_no_resend = 1;
325
326         rc = ptlrpc_queue_wait(req);
327         if (rc)
328                 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
329
330         if (req->rq_repmsg &&
331             (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
332                 *oqctl = *oqc;
333         } else if (!rc) {
334                 CERROR ("Can't unpack obd_quotactl\n");
335                 rc = -EPROTO;
336         }
337
338         EXIT;
339
340         ptlrpc_req_finished(req);
341
342         return rc;
343 }
344
345 /**
346  * For lmv, only need to send request to master MDT, and the master MDT will
347  * process with other slave MDTs.
348  */
349 int lmv_quota_ctl(struct obd_device *unused, struct obd_export *exp,
350                   struct obd_quotactl *oqctl)
351 {
352         struct obd_device *obd = class_exp2obd(exp);
353         struct lmv_obd *lmv = &obd->u.lmv;
354         struct lmv_tgt_desc *tgt = &lmv->tgts[0];
355         int rc;
356         ENTRY;
357
358         if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) {
359                 CERROR("master lmv inactive\n");
360                 RETURN(-EIO);
361         }
362
363         rc = obd_quotactl(tgt->ltd_exp, oqctl);
364         RETURN(rc);
365 }
366
367 int lov_quota_ctl(struct obd_device *unused, struct obd_export *exp,
368                   struct obd_quotactl *oqctl)
369 {
370         struct obd_device *obd = class_exp2obd(exp);
371         struct lov_obd *lov = &obd->u.lov;
372         struct lov_tgt_desc *tgt;
373         __u64 curspace = 0;
374         __u64 bhardlimit = 0;
375         int i, rc = 0;
376         ENTRY;
377
378         if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON &&
379             oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF &&
380             oqctl->qc_cmd != Q_GETOQUOTA &&
381             oqctl->qc_cmd != Q_INITQUOTA &&
382             oqctl->qc_cmd != LUSTRE_Q_SETQUOTA &&
383             oqctl->qc_cmd != Q_FINVALIDATE) {
384                 CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
385                 RETURN(-EFAULT);
386         }
387
388         /* for lov tgt */
389         obd_getref(obd);
390         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
391                 int err;
392
393                 tgt = lov->lov_tgts[i];
394                 if (!tgt || !tgt->ltd_active || tgt->ltd_reap) {
395                         if (oqctl->qc_cmd == Q_GETOQUOTA) {
396                                 rc = -EREMOTEIO;
397                                 CERROR("ost %d is inactive\n", i);
398                         } else {
399                                 CDEBUG(D_HA, "ost %d is inactive\n", i);
400                         }
401                         continue;
402                 }
403
404                 err = obd_quotactl(tgt->ltd_exp, oqctl);
405                 if (err) {
406                         if (tgt->ltd_active && !rc)
407                                 rc = err;
408                         continue;
409                 }
410
411                 if (oqctl->qc_cmd == Q_GETOQUOTA) {
412                         curspace += oqctl->qc_dqblk.dqb_curspace;
413                         bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
414                 }
415         }
416         obd_putref(obd);
417
418         if (oqctl->qc_cmd == Q_GETOQUOTA) {
419                 oqctl->qc_dqblk.dqb_curspace = curspace;
420                 oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
421         }
422         RETURN(rc);
423 }