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;
124 spin_lock(&qctxt->lqc_lock);
125 if (!qctxt->lqc_valid)
128 rc = lustre_hash_add_unique(qctxt->lqc_lqs_hash,
129 &lqs->lqs_key, &lqs->lqs_hash);
130 spin_unlock(&qctxt->lqc_lock);
145 struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
146 struct lustre_quota_ctxt *qctxt,
149 struct lustre_qunit_size *lqs;
153 lqs = lustre_hash_lookup(qctxt->lqc_lqs_hash, &lqs_key);
155 GOTO(out, rc = PTR_ERR(lqs));
157 if (create && lqs == NULL) {
158 /* if quota_create_lqs is successful, it will get a
159 * ref to the lqs. The ref will be released when
160 * qctxt_cleanup() or quota is nullified */
161 lqs = quota_create_lqs(lqs_key, qctxt);
165 GOTO(search_lqs, rc = 0);
166 /* get a reference for the caller when creating lqs
173 LQS_DEBUG(lqs, "%s\n",
174 (create == 1 ? "create lqs" : "search lqs"));
180 CDEBUG(D_ERROR, "get lqs error(rc: %d)\n", rc);
185 int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
186 struct lustre_quota_ctxt *qctxt)
188 struct lustre_qunit_size *lqs = NULL;
189 unsigned long *unit, *tune;
191 cfs_time_t time_limit = 0, *shrink;
196 lqs = quota_search_lqs(LQS_KEY(QAQ_IS_GRP(oqaq), oqaq->qaq_id),
197 qctxt, QAQ_IS_CREATE_LQS(oqaq) ? 1 : 0);
198 if (lqs == NULL || IS_ERR(lqs)){
199 CDEBUG(D_ERROR, "fail to find a lqs(%s id: %u)!\n",
200 QAQ_IS_GRP(oqaq) ? "group" : "user", oqaq->qaq_id);
201 RETURN(PTR_ERR(lqs));
204 CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n",
205 lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
206 spin_lock(&lqs->lqs_lock);
207 for (i = 0; i < 2; i++) {
208 if (i == 0 && !QAQ_IS_ADJBLK(oqaq))
211 if (i == 1 && !QAQ_IS_ADJINO(oqaq))
214 tmp = i ? (lqs->lqs_iunit_sz - oqaq->qaq_iunit_sz) :
215 (lqs->lqs_bunit_sz - oqaq->qaq_bunit_sz);
216 shrink = i ? &lqs->lqs_last_ishrink :
217 &lqs->lqs_last_bshrink;
218 time_limit = cfs_time_add(i ? lqs->lqs_last_ishrink :
219 lqs->lqs_last_bshrink,
220 cfs_time_seconds(qctxt->lqc_switch_seconds));
221 unit = i ? &lqs->lqs_iunit_sz : &lqs->lqs_bunit_sz;
222 tune = i ? &lqs->lqs_itune_sz : &lqs->lqs_btune_sz;
224 /* quota master shrinks */
225 if (qctxt->lqc_handler && tmp > 0)
226 *shrink = cfs_time_current();
228 /* quota master enlarges */
229 if (qctxt->lqc_handler && tmp < 0) {
230 /* in case of ping-pong effect, don't enlarge lqs
233 cfs_time_before(cfs_time_current(), time_limit))
237 /* when setquota, don't enlarge lqs b=18616 */
238 if (QAQ_IS_CREATE_LQS(oqaq) && tmp < 0)
242 *unit = i ? oqaq->qaq_iunit_sz : oqaq->qaq_bunit_sz;
248 rc |= i ? LQS_INO_DECREASE : LQS_BLK_DECREASE;
250 rc |= i ? LQS_INO_INCREASE : LQS_BLK_INCREASE;
252 spin_unlock(&lqs->lqs_lock);
253 CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n",
254 lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
261 int filter_quota_adjust_qunit(struct obd_export *exp,
262 struct quota_adjust_qunit *oqaq,
263 struct lustre_quota_ctxt *qctxt)
265 struct obd_device *obd = exp->exp_obd;
266 unsigned int id[MAXQUOTAS] = { 0, 0 };
271 LASSERT(QAQ_IS_ADJBLK(oqaq));
272 rc = quota_adjust_slave_lqs(oqaq, qctxt);
274 CERROR("adjust mds slave's qunit size failed!(rc:%d)\n", rc);
277 if (QAQ_IS_GRP(oqaq))
278 id[GRPQUOTA] = oqaq->qaq_id;
280 id[USRQUOTA] = oqaq->qaq_id;
283 rc = qctxt_adjust_qunit(obd, qctxt, id, 1, 0, NULL);
284 if (rc == -EDQUOT || rc == -EBUSY ||
285 rc == QUOTA_REQ_RETURNED || rc == -EAGAIN) {
286 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
290 CERROR("slave adjust block quota failed!(rc:%d)\n", rc);
294 #endif /* __KERNEL__ */
297 int client_quota_adjust_qunit(struct obd_export *exp,
298 struct quota_adjust_qunit *oqaq,
299 struct lustre_quota_ctxt *qctxt)
301 struct ptlrpc_request *req;
302 struct quota_adjust_qunit *oqa;
306 /* client don't support this kind of operation, abort it */
307 if (!(exp->exp_connect_flags & OBD_CONNECT_CHANGE_QS)) {
308 CDEBUG(D_QUOTA, "osc: %s don't support change qunit size\n",
309 exp->exp_obd->obd_name);
312 if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
315 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
316 &RQF_OST_QUOTA_ADJUST_QUNIT,
318 OST_QUOTA_ADJUST_QUNIT);
322 oqa = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
325 ptlrpc_request_set_replen(req);
327 rc = ptlrpc_queue_wait(req);
329 CERROR("%s: %s failed: rc = %d\n", exp->exp_obd->obd_name,
331 ptlrpc_req_finished(req);
335 int lov_quota_adjust_qunit(struct obd_export *exp,
336 struct quota_adjust_qunit *oqaq,
337 struct lustre_quota_ctxt *qctxt)
339 struct obd_device *obd = class_exp2obd(exp);
340 struct lov_obd *lov = &obd->u.lov;
344 if (!QAQ_IS_ADJBLK(oqaq)) {
345 CERROR("bad qaq_flags %x for lov obd.\n", oqaq->qaq_flags);
349 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
352 if (!lov->lov_tgts[i]->ltd_active) {
353 CDEBUG(D_HA, "ost %d is inactive\n", i);
357 err = obd_quota_adjust_qunit(lov->lov_tgts[i]->ltd_exp, oqaq,
360 if (lov->lov_tgts[i]->ltd_active && !rc)