1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
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 <linux/lustre_quota.h>
63 #include <class_hash.h>
64 #include "quota_internal.h"
66 #ifdef HAVE_QUOTA_SUPPORT
70 * This function is charge of recording lqs_ino_rec and
71 * lqs_blk_rec. when a lquota slave checks a quota
72 * request(check_cur_qunit) and finishes a quota
73 * request(dqacq_completion), it will be called.
74 * is_chk: whether it is checking quota; otherwise, it is finishing
75 * is_acq: whether it is acquiring; otherwise, it is releasing
77 void quota_compute_lqs(struct qunit_data *qdata, struct lustre_qunit_size *lqs,
78 int is_chk, int is_acq)
82 LASSERT(qdata && lqs);
83 LASSERT_SPIN_LOCKED(&lqs->lqs_lock);
85 rec = QDATA_IS_BLK(qdata) ? &lqs->lqs_blk_rec : &lqs->lqs_ino_rec;
87 if (!!is_chk + !!is_acq == 1)
88 *rec -= qdata->qd_count;
90 *rec += qdata->qd_count;
94 static struct lustre_qunit_size *
95 quota_create_lqs(unsigned long long lqs_key, struct lustre_quota_ctxt *qctxt)
97 struct lustre_qunit_size *lqs = NULL;
102 GOTO(out, rc = -ENOMEM);
104 lqs->lqs_key = lqs_key;
106 spin_lock_init(&lqs->lqs_lock);
107 lqs->lqs_bwrite_pending = 0;
108 lqs->lqs_iwrite_pending = 0;
109 lqs->lqs_ino_rec = 0;
110 lqs->lqs_blk_rec = 0;
111 lqs->lqs_id = LQS_KEY_ID(lqs->lqs_key);
112 lqs->lqs_flags = LQS_KEY_GRP(lqs->lqs_key) ? LQUOTA_FLAGS_GRP : 0;
113 lqs->lqs_bunit_sz = qctxt->lqc_bunit_sz;
114 lqs->lqs_iunit_sz = qctxt->lqc_iunit_sz;
115 lqs->lqs_btune_sz = qctxt->lqc_btune_sz;
116 lqs->lqs_itune_sz = qctxt->lqc_itune_sz;
117 lqs->lqs_ctxt = qctxt;
118 if (qctxt->lqc_handler) {
119 lqs->lqs_last_bshrink = 0;
120 lqs->lqs_last_ishrink = 0;
123 rc = lustre_hash_add_unique(qctxt->lqc_lqs_hash, &lqs->lqs_key,
138 struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
139 struct lustre_quota_ctxt *qctxt,
143 struct lustre_qunit_size *lqs;
146 lqs = lustre_hash_lookup(qctxt->lqc_lqs_hash, &lqs_key);
147 if (lqs == NULL && create) {
148 lqs = quota_create_lqs(lqs_key, qctxt);
151 if (rc == -EALREADY) {
158 LQS_DEBUG(lqs, "%s\n",
159 (create == 1 ? "create lqs" : "search lqs"));
164 CDEBUG(D_ERROR, "get lqs error(rc: %d)\n", rc);
169 int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
170 struct lustre_quota_ctxt *qctxt)
172 struct lustre_qunit_size *lqs = NULL;
173 unsigned long *lbunit, *liunit, *lbtune, *litune;
174 signed long b_tmp = 0, i_tmp = 0;
175 cfs_time_t time_limit = 0;
180 lqs = quota_search_lqs(LQS_KEY(QAQ_IS_GRP(oqaq), oqaq->qaq_id),
182 if (lqs == NULL || IS_ERR(lqs))
183 RETURN(PTR_ERR(lqs));
185 /* deleting the lqs, because a user sets lfs quota 0 0 0 0 */
186 if (!oqaq->qaq_bunit_sz && !oqaq->qaq_iunit_sz && QAQ_IS_ADJBLK(oqaq) &&
187 QAQ_IS_ADJINO(oqaq)) {
188 LQS_DEBUG(lqs, "release lqs\n");
189 /* this is for quota_search_lqs */
196 lbunit = &lqs->lqs_bunit_sz;
197 liunit = &lqs->lqs_iunit_sz;
198 lbtune = &lqs->lqs_btune_sz;
199 litune = &lqs->lqs_itune_sz;
201 CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
202 spin_lock(&lqs->lqs_lock);
203 /* adjust the slave's block qunit size */
204 if (QAQ_IS_ADJBLK(oqaq)) {
205 cfs_duration_t sec = cfs_time_seconds(qctxt->lqc_switch_seconds);
207 b_tmp = *lbunit - oqaq->qaq_bunit_sz;
209 if (qctxt->lqc_handler && b_tmp > 0)
210 lqs->lqs_last_bshrink = cfs_time_current();
212 if (qctxt->lqc_handler && b_tmp < 0) {
213 time_limit = cfs_time_add(lqs->lqs_last_bshrink, sec);
214 if (!lqs->lqs_last_bshrink ||
215 cfs_time_after(cfs_time_current(), time_limit)) {
216 *lbunit = oqaq->qaq_bunit_sz;
217 *lbtune = (*lbunit) / 2;
222 *lbunit = oqaq->qaq_bunit_sz;
223 *lbtune = (*lbunit) / 2;
227 /* adjust the slave's file qunit size */
228 if (QAQ_IS_ADJINO(oqaq)) {
229 i_tmp = *liunit - oqaq->qaq_iunit_sz;
231 if (qctxt->lqc_handler && i_tmp > 0)
232 lqs->lqs_last_ishrink = cfs_time_current();
234 if (qctxt->lqc_handler && i_tmp < 0) {
235 time_limit = cfs_time_add(lqs->lqs_last_ishrink,
236 cfs_time_seconds(qctxt->
237 lqc_switch_seconds));
238 if (!lqs->lqs_last_ishrink ||
239 cfs_time_after(cfs_time_current(), time_limit)) {
240 *liunit = oqaq->qaq_iunit_sz;
241 *litune = (*liunit) / 2;
246 *liunit = oqaq->qaq_iunit_sz;
247 *litune = (*liunit) / 2;
250 spin_unlock(&lqs->lqs_lock);
251 CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
256 rc |= LQS_BLK_DECREASE;
258 rc |= LQS_BLK_INCREASE;
261 rc |= LQS_INO_DECREASE;
263 rc |= LQS_INO_INCREASE;
268 int filter_quota_adjust_qunit(struct obd_export *exp,
269 struct quota_adjust_qunit *oqaq,
270 struct lustre_quota_ctxt *qctxt)
272 struct obd_device *obd = exp->exp_obd;
273 unsigned int id[MAXQUOTAS] = { 0, 0 };
278 LASSERT(QAQ_IS_ADJBLK(oqaq));
279 rc = quota_adjust_slave_lqs(oqaq, qctxt);
281 CERROR("adjust mds slave's qunit size failed!(rc:%d)\n", rc);
284 if (QAQ_IS_GRP(oqaq))
285 id[GRPQUOTA] = oqaq->qaq_id;
287 id[USRQUOTA] = oqaq->qaq_id;
290 rc = qctxt_adjust_qunit(obd, qctxt, id, 1, 0, NULL);
291 if (rc == -EDQUOT || rc == -EBUSY ||
292 rc == QUOTA_REQ_RETURNED || rc == -EAGAIN) {
293 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
297 CERROR("slave adjust block quota failed!(rc:%d)\n", rc);
301 #endif /* __KERNEL__ */
304 int client_quota_adjust_qunit(struct obd_export *exp,
305 struct quota_adjust_qunit *oqaq,
306 struct lustre_quota_ctxt *qctxt)
308 struct ptlrpc_request *req;
309 struct quota_adjust_qunit *oqa;
313 /* client don't support this kind of operation, abort it */
314 if (!(exp->exp_connect_flags & OBD_CONNECT_CHANGE_QS)) {
315 CDEBUG(D_QUOTA, "osc: %s don't support change qunit size\n",
316 exp->exp_obd->obd_name);
319 if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
322 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
323 &RQF_OST_QUOTA_ADJUST_QUNIT,
325 OST_QUOTA_ADJUST_QUNIT);
329 oqa = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
332 ptlrpc_request_set_replen(req);
334 rc = ptlrpc_queue_wait(req);
336 CERROR("%s: %s failed: rc = %d\n", exp->exp_obd->obd_name,
338 ptlrpc_req_finished(req);
342 int lov_quota_adjust_qunit(struct obd_export *exp,
343 struct quota_adjust_qunit *oqaq,
344 struct lustre_quota_ctxt *qctxt)
346 struct obd_device *obd = class_exp2obd(exp);
347 struct lov_obd *lov = &obd->u.lov;
351 if (!QAQ_IS_ADJBLK(oqaq)) {
352 CERROR("bad qaq_flags %x for lov obd.\n", oqaq->qaq_flags);
356 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
359 if (!lov->lov_tgts[i]->ltd_active) {
360 CDEBUG(D_HA, "ost %d is inactive\n", i);
364 err = obd_quota_adjust_qunit(lov->lov_tgts[i]->ltd_exp, oqaq,
367 if (lov->lov_tgts[i]->ltd_active && !rc)