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 (c) 2008, 2010, Oracle and/or its affiliates. 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 "quota_internal.h"
65 #ifdef HAVE_QUOTA_SUPPORT
69 * This function is charge of recording lqs_ino_rec and
70 * lqs_blk_rec. when a lquota slave checks a quota
71 * request(check_cur_qunit) and finishes a quota
72 * request(dqacq_completion), it will be called.
73 * is_chk: whether it is checking quota; otherwise, it is finishing
74 * is_acq: whether it is acquiring; otherwise, it is releasing
76 void quota_compute_lqs(struct qunit_data *qdata, struct lustre_qunit_size *lqs,
77 int is_chk, int is_acq)
81 LASSERT(qdata && lqs);
82 LASSERT_SPIN_LOCKED(&lqs->lqs_lock);
84 rec = QDATA_IS_BLK(qdata) ? &lqs->lqs_blk_rec : &lqs->lqs_ino_rec;
86 if (!!is_chk + !!is_acq == 1)
87 *rec -= qdata->qd_count;
89 *rec += qdata->qd_count;
93 struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
94 struct lustre_quota_ctxt *qctxt,
97 struct lustre_qunit_size *lqs;
98 struct lustre_qunit_size *lqs2;
99 cfs_hash_t *hs = NULL;
102 cfs_spin_lock(&qctxt->lqc_lock);
103 if (qctxt->lqc_valid) {
104 LASSERT(qctxt->lqc_lqs_hash != NULL);
105 hs = cfs_hash_getref(qctxt->lqc_lqs_hash);
107 cfs_spin_unlock(&qctxt->lqc_lock);
114 /* cfs_hash_lookup will +1 refcount for caller */
115 lqs = cfs_hash_lookup(qctxt->lqc_lqs_hash, &lqs_key);
116 if (lqs != NULL) /* found */
128 lqs->lqs_key = lqs_key;
130 cfs_spin_lock_init(&lqs->lqs_lock);
132 lqs->lqs_bwrite_pending = 0;
133 lqs->lqs_iwrite_pending = 0;
134 lqs->lqs_ino_rec = 0;
135 lqs->lqs_blk_rec = 0;
136 lqs->lqs_id = LQS_KEY_ID(lqs->lqs_key);
137 lqs->lqs_flags = LQS_KEY_GRP(lqs->lqs_key) ? LQUOTA_FLAGS_GRP : 0;
138 lqs->lqs_bunit_sz = qctxt->lqc_bunit_sz;
139 lqs->lqs_iunit_sz = qctxt->lqc_iunit_sz;
140 lqs->lqs_btune_sz = qctxt->lqc_btune_sz;
141 lqs->lqs_itune_sz = qctxt->lqc_itune_sz;
142 if (qctxt->lqc_handler) {
143 lqs->lqs_last_bshrink = 0;
144 lqs->lqs_last_ishrink = 0;
147 lqs->lqs_ctxt = qctxt; /* must be called before lqs_initref */
148 cfs_atomic_set(&lqs->lqs_refcount, 1); /* 1 for caller */
149 cfs_atomic_inc(&lqs->lqs_ctxt->lqc_lqs);
151 /* lqc_lqs_hash will take +1 refcount on lqs on adding */
152 lqs2 = cfs_hash_findadd_unique(qctxt->lqc_lqs_hash,
153 &lqs->lqs_key, &lqs->lqs_hash);
154 if (lqs2 == lqs) /* added to hash */
164 if (rc != 0) { /* error */
165 CERROR("get lqs error(rc: %d)\n", rc);
170 LQS_DEBUG(lqs, "%s\n",
171 (create == 1 ? "create lqs" : "search lqs"));
176 int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
177 struct lustre_quota_ctxt *qctxt)
179 struct lustre_qunit_size *lqs = NULL;
180 unsigned long *unit, *tune;
182 cfs_time_t time_limit = 0, *shrink;
187 lqs = quota_search_lqs(LQS_KEY(QAQ_IS_GRP(oqaq), oqaq->qaq_id),
188 qctxt, QAQ_IS_CREATE_LQS(oqaq) ? 1 : 0);
189 if (lqs == NULL || IS_ERR(lqs)){
190 CERROR("fail to find a lqs for %sid %u!\n",
191 QAQ_IS_GRP(oqaq) ? "g" : "u", oqaq->qaq_id);
192 RETURN(PTR_ERR(lqs));
195 CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n",
196 lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
197 cfs_spin_lock(&lqs->lqs_lock);
198 for (i = 0; i < 2; i++) {
199 if (i == 0 && !QAQ_IS_ADJBLK(oqaq))
202 if (i == 1 && !QAQ_IS_ADJINO(oqaq))
205 tmp = i ? (lqs->lqs_iunit_sz - oqaq->qaq_iunit_sz) :
206 (lqs->lqs_bunit_sz - oqaq->qaq_bunit_sz);
207 shrink = i ? &lqs->lqs_last_ishrink :
208 &lqs->lqs_last_bshrink;
209 time_limit = cfs_time_add(i ? lqs->lqs_last_ishrink :
210 lqs->lqs_last_bshrink,
211 cfs_time_seconds(qctxt->lqc_switch_seconds));
212 unit = i ? &lqs->lqs_iunit_sz : &lqs->lqs_bunit_sz;
213 tune = i ? &lqs->lqs_itune_sz : &lqs->lqs_btune_sz;
215 /* quota master shrinks */
216 if (qctxt->lqc_handler && tmp > 0)
217 *shrink = cfs_time_current();
219 /* quota master enlarges */
220 if (qctxt->lqc_handler && tmp < 0) {
221 /* in case of ping-pong effect, don't enlarge lqs
224 cfs_time_before(cfs_time_current(), time_limit))
228 /* when setquota, don't enlarge lqs b=18616 */
229 if (QAQ_IS_CREATE_LQS(oqaq) && tmp < 0)
233 *unit = i ? oqaq->qaq_iunit_sz : oqaq->qaq_bunit_sz;
239 rc |= i ? LQS_INO_DECREASE : LQS_BLK_DECREASE;
241 rc |= i ? LQS_INO_INCREASE : LQS_BLK_INCREASE;
243 cfs_spin_unlock(&lqs->lqs_lock);
244 CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n",
245 lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
252 int filter_quota_adjust_qunit(struct obd_export *exp,
253 struct quota_adjust_qunit *oqaq,
254 struct lustre_quota_ctxt *qctxt,
255 struct ptlrpc_request_set *rqset)
257 struct obd_device *obd = exp->exp_obd;
258 unsigned int id[MAXQUOTAS] = { 0, 0 };
263 LASSERT(QAQ_IS_ADJBLK(oqaq));
264 rc = quota_adjust_slave_lqs(oqaq, qctxt);
266 CERROR("adjust mds slave's qunit size failed!(rc:%d)\n", rc);
269 if (QAQ_IS_GRP(oqaq))
270 id[GRPQUOTA] = oqaq->qaq_id;
272 id[USRQUOTA] = oqaq->qaq_id;
275 rc = qctxt_adjust_qunit(obd, qctxt, id, 1, 0, NULL);
276 if (rc == -EDQUOT || rc == -EBUSY ||
277 rc == QUOTA_REQ_RETURNED || rc == -EAGAIN) {
278 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
282 CERROR("slave adjust block quota failed!(rc:%d)\n", rc);
286 #endif /* __KERNEL__ */
289 int client_quota_adjust_qunit(struct obd_export *exp,
290 struct quota_adjust_qunit *oqaq,
291 struct lustre_quota_ctxt *qctxt,
292 struct ptlrpc_request_set *rqset)
294 struct ptlrpc_request *req;
295 struct quota_adjust_qunit *oqa;
299 /* client don't support this kind of operation, abort it */
300 if (!(exp->exp_connect_flags & OBD_CONNECT_CHANGE_QS)) {
301 CDEBUG(D_QUOTA, "osc: %s don't support change qunit size\n",
302 exp->exp_obd->obd_name);
305 if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
310 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
311 &RQF_OST_QUOTA_ADJUST_QUNIT,
313 OST_QUOTA_ADJUST_QUNIT);
317 oqa = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
320 ptlrpc_request_set_replen(req);
322 ptlrpc_set_add_req(rqset, req);
326 int lov_quota_adjust_qunit(struct obd_export *exp,
327 struct quota_adjust_qunit *oqaq,
328 struct lustre_quota_ctxt *qctxt,
329 struct ptlrpc_request_set *rqset)
331 struct obd_device *obd = class_exp2obd(exp);
332 struct lov_obd *lov = &obd->u.lov;
337 if (!QAQ_IS_ADJBLK(oqaq)) {
338 CERROR("bad qaq_flags %x for lov obd.\n", oqaq->qaq_flags);
344 rqset = ptlrpc_prep_set();
351 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
353 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
354 CDEBUG(D_HA, "ost %d is inactive\n", i);
358 err = obd_quota_adjust_qunit(lov->lov_tgts[i]->ltd_exp, oqaq,
361 if (lov->lov_tgts[i]->ltd_active && !rc)
367 err = ptlrpc_set_wait(rqset);
371 /* Destroy the set if none was provided by the caller */
373 ptlrpc_set_destroy(rqset);