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);
84 is_blk = QDATA_IS_BLK(qdata);
89 lqs->lqs_blk_rec += qdata->qd_count;
91 lqs->lqs_ino_rec += qdata->qd_count;
94 lqs->lqs_blk_rec -= qdata->qd_count;
96 lqs->lqs_ino_rec -= qdata->qd_count;
101 lqs->lqs_blk_rec -= qdata->qd_count;
103 lqs->lqs_ino_rec -= qdata->qd_count;
106 lqs->lqs_blk_rec += qdata->qd_count;
108 lqs->lqs_ino_rec += qdata->qd_count;
113 void qdata_to_oqaq(struct qunit_data *qdata, struct quota_adjust_qunit *oqaq)
118 oqaq->qaq_flags = qdata->qd_flags;
119 oqaq->qaq_id = qdata->qd_id;
120 if (QDATA_IS_ADJBLK(qdata))
121 oqaq->qaq_bunit_sz = qdata->qd_qunit;
122 if (QDATA_IS_ADJINO(qdata))
123 oqaq->qaq_iunit_sz = qdata->qd_qunit;
126 int quota_search_lqs(struct qunit_data *qdata, struct quota_adjust_qunit *oqaq,
127 struct lustre_quota_ctxt *qctxt,
128 struct lustre_qunit_size **lqs_return)
130 struct quota_adjust_qunit *oqaq_tmp = NULL;
133 LASSERT(*lqs_return == NULL);
134 LASSERT(oqaq || qdata);
137 OBD_ALLOC_PTR(oqaq_tmp);
140 qdata_to_oqaq(qdata, oqaq_tmp);
145 *lqs_return = lustre_hash_lookup(qctxt->lqc_lqs_hash, oqaq_tmp);
147 LQS_DEBUG((*lqs_return), "show lqs\n");
150 OBD_FREE_PTR(oqaq_tmp);
154 int quota_create_lqs(struct qunit_data *qdata, struct quota_adjust_qunit *oqaq,
155 struct lustre_quota_ctxt *qctxt,
156 struct lustre_qunit_size **lqs_return)
158 struct lustre_qunit_size *lqs = NULL;
162 LASSERT(*lqs_return == NULL);
163 LASSERT(oqaq || qdata);
167 GOTO(out, rc = -ENOMEM);
170 qdata_to_oqaq(qdata, &lqs->lqs_key);
172 lqs->lqs_key = *oqaq;
174 spin_lock_init(&lqs->lqs_lock);
175 lqs->lqs_bwrite_pending = 0;
176 lqs->lqs_iwrite_pending = 0;
177 lqs->lqs_ino_rec = 0;
178 lqs->lqs_blk_rec = 0;
179 lqs->lqs_id = lqs->lqs_key.qaq_id;
180 lqs->lqs_flags = QAQ_IS_GRP(&lqs->lqs_key);
181 lqs->lqs_bunit_sz = qctxt->lqc_bunit_sz;
182 lqs->lqs_iunit_sz = qctxt->lqc_iunit_sz;
183 lqs->lqs_btune_sz = qctxt->lqc_btune_sz;
184 lqs->lqs_itune_sz = qctxt->lqc_itune_sz;
185 lqs->lqs_ctxt = qctxt;
186 if (qctxt->lqc_handler) {
187 lqs->lqs_last_bshrink = 0;
188 lqs->lqs_last_ishrink = 0;
191 rc = lustre_hash_add_unique(qctxt->lqc_lqs_hash,
192 &lqs->lqs_key, &lqs->lqs_hash);
193 LQS_DEBUG(lqs, "create lqs\n");
204 int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
205 struct lustre_quota_ctxt *qctxt)
207 struct lustre_qunit_size *lqs = NULL;
208 unsigned long *lbunit, *liunit, *lbtune, *litune;
209 signed long b_tmp = 0, i_tmp = 0;
210 cfs_time_t time_limit = 0;
216 rc = quota_search_lqs(NULL, oqaq, qctxt, &lqs);
218 /* deleting the lqs, because a user sets lfs quota 0 0 0 0 */
219 if (!oqaq->qaq_bunit_sz && !oqaq->qaq_iunit_sz && QAQ_IS_ADJBLK(oqaq) &&
220 QAQ_IS_ADJINO(oqaq)) {
222 LQS_DEBUG(lqs, "release lqs\n");
223 /* this is for quota_search_lqs */
232 rc = quota_create_lqs(NULL, oqaq, qctxt, &lqs);
239 lbunit = &lqs->lqs_bunit_sz;
240 liunit = &lqs->lqs_iunit_sz;
241 lbtune = &lqs->lqs_btune_sz;
242 litune = &lqs->lqs_itune_sz;
244 CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
245 spin_lock(&lqs->lqs_lock);
246 /* adjust the slave's block qunit size */
247 if (QAQ_IS_ADJBLK(oqaq)) {
248 cfs_duration_t sec = cfs_time_seconds(qctxt->lqc_switch_seconds);
250 b_tmp = *lbunit - oqaq->qaq_bunit_sz;
252 if (qctxt->lqc_handler && b_tmp > 0)
253 lqs->lqs_last_bshrink = cfs_time_current();
255 if (qctxt->lqc_handler && b_tmp < 0) {
256 time_limit = cfs_time_add(lqs->lqs_last_bshrink, sec);
257 if (!lqs->lqs_last_bshrink ||
258 cfs_time_after(cfs_time_current(), time_limit)) {
259 *lbunit = oqaq->qaq_bunit_sz;
260 *lbtune = (*lbunit) / 2;
265 *lbunit = oqaq->qaq_bunit_sz;
266 *lbtune = (*lbunit) / 2;
270 /* adjust the slave's file qunit size */
271 if (QAQ_IS_ADJINO(oqaq)) {
272 i_tmp = *liunit - oqaq->qaq_iunit_sz;
274 if (qctxt->lqc_handler && i_tmp > 0)
275 lqs->lqs_last_ishrink = cfs_time_current();
277 if (qctxt->lqc_handler && i_tmp < 0) {
278 time_limit = cfs_time_add(lqs->lqs_last_ishrink,
279 cfs_time_seconds(qctxt->
280 lqc_switch_seconds));
281 if (!lqs->lqs_last_ishrink ||
282 cfs_time_after(cfs_time_current(), time_limit)) {
283 *liunit = oqaq->qaq_iunit_sz;
284 *litune = (*liunit) / 2;
289 *liunit = oqaq->qaq_iunit_sz;
290 *litune = (*liunit) / 2;
293 spin_unlock(&lqs->lqs_lock);
294 CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
299 rc |= LQS_BLK_DECREASE;
301 rc |= LQS_BLK_INCREASE;
304 rc |= LQS_INO_DECREASE;
306 rc |= LQS_INO_INCREASE;
311 int filter_quota_adjust_qunit(struct obd_export *exp,
312 struct quota_adjust_qunit *oqaq,
313 struct lustre_quota_ctxt *qctxt)
315 struct obd_device *obd = exp->exp_obd;
316 unsigned int uid = 0, gid = 0;
321 LASSERT(QAQ_IS_ADJBLK(oqaq));
322 rc = quota_adjust_slave_lqs(oqaq, qctxt);
324 CERROR("adjust mds slave's qunit size failed!(rc:%d)\n", rc);
327 if (QAQ_IS_GRP(oqaq))
333 rc = qctxt_adjust_qunit(obd, qctxt, uid, gid, 1, 0, NULL);
334 if (rc == -EDQUOT || rc == -EBUSY ||
335 rc == QUOTA_REQ_RETURNED || rc == -EAGAIN) {
336 CDEBUG(D_QUOTA, "rc: %d.\n", rc);
340 CERROR("slave adjust block quota failed!(rc:%d)\n", rc);
344 #endif /* __KERNEL__ */
347 int client_quota_adjust_qunit(struct obd_export *exp,
348 struct quota_adjust_qunit *oqaq,
349 struct lustre_quota_ctxt *qctxt)
351 struct ptlrpc_request *req;
352 struct quota_adjust_qunit *oqa;
356 /* client don't support this kind of operation, abort it */
357 if (!(exp->exp_connect_flags & OBD_CONNECT_CHANGE_QS)) {
358 CDEBUG(D_QUOTA, "osc: %s don't support change qunit size\n",
359 exp->exp_obd->obd_name);
362 if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
365 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
366 &RQF_OST_QUOTA_ADJUST_QUNIT,
368 OST_QUOTA_ADJUST_QUNIT);
372 oqa = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
375 ptlrpc_request_set_replen(req);
377 rc = ptlrpc_queue_wait(req);
379 CERROR("%s: %s failed: rc = %d\n", exp->exp_obd->obd_name,
381 ptlrpc_req_finished(req);
385 int lov_quota_adjust_qunit(struct obd_export *exp,
386 struct quota_adjust_qunit *oqaq,
387 struct lustre_quota_ctxt *qctxt)
389 struct obd_device *obd = class_exp2obd(exp);
390 struct lov_obd *lov = &obd->u.lov;
394 if (!QAQ_IS_ADJBLK(oqaq)) {
395 CERROR("bad qaq_flags %x for lov obd.\n", oqaq->qaq_flags);
399 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
402 if (!lov->lov_tgts[i]->ltd_active) {
403 CDEBUG(D_HA, "ost %d is inactive\n", i);
407 err = obd_quota_adjust_qunit(lov->lov_tgts[i]->ltd_exp, oqaq,
410 if (lov->lov_tgts[i]->ltd_active && !rc)