4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 # define EXPORT_SYMTAB
39 #define DEBUG_SUBSYSTEM S_LQUOTA
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>
56 #include <obd_class.h>
57 #include <lustre_mds.h>
58 #include <lustre_dlm.h>
59 #include <lustre_cfg.h>
61 #include <lustre_fsfilt.h>
62 #include <lustre_quota.h>
63 #include "quota_internal.h"
65 #ifdef HAVE_QUOTA_SUPPORT
68 int mds_quota_ctl(struct obd_device *obd, struct obd_export *unused,
69 struct obd_quotactl *oqctl)
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;
79 cfs_gettimeofday(&work_start);
80 switch (oqctl->qc_cmd) {
82 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
83 rc = mds_quota_on(obd, oqctl);
86 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
87 rc = mds_quota_off(obd, oqctl);
90 rc = mds_set_dqinfo(obd, oqctl);
93 rc = mds_get_dqinfo(obd, oqctl);
96 rc = mds_set_dqblk(obd, oqctl);
99 rc = mds_get_dqblk(obd, oqctl);
103 rc = mds_get_obd_quota(obd, oqctl);
105 case LUSTRE_Q_INVALIDATE:
106 rc = mds_quota_invalidate(obd, oqctl);
108 case LUSTRE_Q_FINVALIDATE:
109 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
110 rc = mds_quota_finvalidate(obd, oqctl);
113 CERROR("%s: unsupported mds_quotactl command: %d\n",
114 obd->obd_name, oqctl->qc_cmd);
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);
129 int filter_quota_ctl(struct obd_device *unused, struct obd_export *exp,
130 struct obd_quotactl *oqctl)
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;
138 struct timeval work_start;
139 struct timeval work_end;
144 cfs_gettimeofday(&work_start);
145 switch (oqctl->qc_cmd) {
147 oqctl->qc_id = obt->obt_qfmt;
148 rc = generic_quota_on(obd, oqctl, 0);
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);
160 oqctl->qc_id = obt->obt_qfmt; /* override qfmt version */
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);
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);
175 if (oqctl->qc_stat == QUOTA_RECOVERING)
176 quota_unbarrier(handle);
178 if (oqctl->qc_cmd == Q_QUOTAOFF ||
179 oqctl->qc_cmd == Q_FINVALIDATE) {
180 if (oqctl->qc_cmd == Q_QUOTAOFF) {
182 obt->obt_qctxt.lqc_flags &=
183 ~UGQUOTA2LQC(oqctl->qc_type);
184 else if (quota_is_off(qctxt, oqctl))
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);
190 cfs_up(&obt->obt_quotachecking);
195 /* currently, it is only used for nullifying the quota */
196 handle = quota_barrier(&obd->u.obt.obt_qctxt, oqctl, 1);
198 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
199 rc = fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
202 oqctl->qc_cmd = Q_SYNC;
203 fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
204 oqctl->qc_cmd = Q_SETQUOTA;
206 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
207 quota_unbarrier(handle);
209 lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
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",
216 lqs->lqs_flags &= ~QB_SET;
223 unsigned int id[MAXQUOTAS] = { 0, 0 };
225 /* Initialize quota limit to MIN_QLIMIT */
226 LASSERT(oqctl->qc_dqblk.dqb_valid == QIF_BLIMITS);
227 LASSERT(oqctl->qc_dqblk.dqb_bsoftlimit == 0);
229 if (!oqctl->qc_dqblk.dqb_bhardlimit)
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);
240 /* Update on-disk quota, in case of lose the changed limits
241 * (MIN_QLIMIT) on crash, which cannot be recovered.*/
243 oqctl->qc_cmd = Q_SYNC;
244 fsfilt_quotactl(obd, obd->u.obt.obt_sb, oqctl);
245 oqctl->qc_cmd = Q_INITQUOTA;
247 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
248 quota_unbarrier(handle);
253 lqs = quota_search_lqs(LQS_KEY(oqctl->qc_type, oqctl->qc_id),
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",
261 lqs->lqs_flags |= QB_SET;
265 /* Trigger qunit pre-acquire */
266 if (oqctl->qc_type == USRQUOTA)
267 id[USRQUOTA] = oqctl->qc_id;
269 id[GRPQUOTA] = oqctl->qc_id;
271 rc = qctxt_adjust_qunit(obd, &obd->u.obt.obt_qctxt,
273 if (rc == -EDQUOT || rc == -EBUSY) {
274 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
281 CERROR("%s: unsupported filter_quotactl command: %d\n",
282 obd->obd_name, oqctl->qc_cmd);
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);
291 #endif /* __KERNEL__ */