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, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2012, 2017, Intel Corporation.
25 * Use is subject to license terms.
27 * Author: Johann Lombardi <johann.lombardi@intel.com>
28 * Author: Niu Yawei <yawei.niu@intel.com>
31 #define DEBUG_SUBSYSTEM S_LQUOTA
33 #include "qsd_internal.h"
36 * Initialize qsd-specific fields of quota entry.
38 * \param lqe - is the quota entry to initialize
39 * \param arg - is the pointer to the qsd_qtype_info structure
41 static void qsd_lqe_init(struct lquota_entry *lqe, void *arg)
43 LASSERT(!lqe_is_master(lqe));
45 /* initialize slave parameters */
46 rwlock_init(&lqe->lqe_lock);
47 memset(&lqe->lqe_lockh, 0, sizeof(lqe->lqe_lockh));
48 lqe->lqe_pending_write = 0;
49 lqe->lqe_pending_req = 0;
50 init_waitqueue_head(&lqe->lqe_waiters);
52 lqe->lqe_nopreacq = false;
56 * Update a slave quota entry. This is done by reading enforcement status from
57 * the copy of the global index and then how much is the slave currenly owns
58 * for this user from the slave index copy.
60 * \param env - the environment passed by the caller
61 * \param lqe - is the quota entry to refresh
62 * \param arg - is the pointer to the qsd_qtype_info structure
63 * \param need_crt - needed to be compat with qmt_lqe_read
65 static int qsd_lqe_read(const struct lu_env *env, struct lquota_entry *lqe,
66 void *arg, bool need_crt)
68 struct qsd_thread_info *qti = qsd_info(env);
69 struct qsd_qtype_info *qqi = (struct qsd_qtype_info *)arg;
72 LASSERT(!lqe_is_master(lqe));
74 /* read record from global index copy to know whether quota is
75 * enforced for this user */
76 rc = lquota_disk_read(env, qqi->qqi_glb_obj, &lqe->lqe_id,
77 (struct dt_rec *)&qti->qti_glb_rec);
81 /* no such entry, assume quota isn't enforced for this user */
82 lqe->lqe_enforced = false;
85 if (lqe->lqe_id.qid_uid == 0) {
86 qqi->qqi_default_hardlimit =
87 qti->qti_glb_rec.qbr_hardlimit;
88 qqi->qqi_default_softlimit =
89 qti->qti_glb_rec.qbr_softlimit;
90 qqi->qqi_default_gracetime =
91 qti->qti_glb_rec.qbr_granted;
94 if (lqe->lqe_id.qid_uid != 0 &&
95 (qti->qti_glb_rec.qbr_hardlimit != 0 ||
96 qti->qti_glb_rec.qbr_softlimit != 0))
97 lqe->lqe_enforced = true;
99 lqe->lqe_enforced = false;
102 LQUOTA_ERROR(lqe, "failed to read quota entry from global "
103 "index copy, rc:%d", rc);
107 if (lqe->lqe_id.qid_uid != 0 &&
109 (LQUOTA_FLAG(qti->qti_glb_rec.qbr_time) & LQUOTA_FLAG_DEFAULT &&
110 qti->qti_glb_rec.qbr_hardlimit == 0 &&
111 qti->qti_glb_rec.qbr_softlimit == 0))) {
112 struct lquota_entry *lqe_def;
113 union lquota_id qid = { {0} };
115 /* ensure the lqe storing the default quota setting loaded */
116 lqe_def = lqe_locate(env, qqi->qqi_site, &qid);
118 lqe->lqe_is_default = true;
120 if (qqi->qqi_default_hardlimit != 0 ||
121 qqi->qqi_default_softlimit != 0) {
122 LQUOTA_DEBUG(lqe, "enforced by default quota");
123 lqe->lqe_enforced = true;
126 if (!IS_ERR(lqe_def))
130 /* read record from slave index copy to find out how much space is
131 * currently owned by this slave */
132 rc = lquota_disk_read(env, qqi->qqi_slv_obj, &lqe->lqe_id,
133 (struct dt_rec *)&qti->qti_slv_rec);
136 lqe->lqe_granted = 0;
139 lqe->lqe_granted = qti->qti_slv_rec.qsr_granted;
142 LQUOTA_ERROR(lqe, "failed to read quota entry from slave "
143 "index copy, rc:%d", rc);
147 /* don't know what the qunit value is yet */
148 qsd_set_qunit(lqe, 0);
150 /* read current disk-usage from disk */
151 rc = qsd_refresh_usage(env, lqe);
155 LQUOTA_DEBUG(lqe, "successfully read from disk");
160 * Print lqe information for debugging.
162 * \param lqe - is the quota entry to debug
163 * \param arg - is the pointer to the qsd_qtype_info structure
164 * \param msgdata - debug message
165 * \param fmt - format of debug message
167 static void qsd_lqe_debug(struct lquota_entry *lqe, void *arg,
168 struct libcfs_debug_msg_data *msgdata,
169 struct va_format *vaf)
171 struct qsd_qtype_info *qqi = (struct qsd_qtype_info *)arg;
173 libcfs_debug_msg(msgdata,
174 "%pV qsd:%s qtype:%s id:%llu enforced:%d granted: %llu pending:%llu waiting:%llu req:%d usage: %llu qunit:%llu qtune:%llu edquot:%d default:%s\n",
176 qqi->qqi_qsd->qsd_svname, qtype_name(qqi->qqi_qtype),
177 lqe->lqe_id.qid_uid, lqe->lqe_enforced,
178 lqe->lqe_granted, lqe->lqe_pending_write,
179 lqe->lqe_waiting_write, lqe->lqe_pending_req,
180 lqe->lqe_usage, lqe->lqe_qunit, lqe->lqe_qtune,
181 lqe->lqe_edquot, lqe->lqe_is_default ? "yes" : "no");
185 * Vector of quota entry operations supported on the slave
187 struct lquota_entry_operations qsd_lqe_ops = {
188 .lqe_init = qsd_lqe_init,
189 .lqe_read = qsd_lqe_read,
190 .lqe_debug = qsd_lqe_debug,
193 int qsd_write_version(const struct lu_env *env, struct qsd_qtype_info *qqi,
194 __u64 ver, bool global)
196 struct qsd_instance *qsd = qqi->qqi_qsd;
197 struct dt_object *obj = global ? qqi->qqi_glb_obj :
202 rc = lquota_disk_update_ver(env, qsd->qsd_dev, obj, ver);
206 qsd_bump_version(qqi, ver, global);
211 * Consult current disk space consumed by a given identifier.
213 * \param env - the environment passed by the caller
214 * \param qqi - is the pointer to the qsd_qtype_info structure associated
215 * with the identifier.
216 * \param lqe - is the quota entry associated with the identifier
218 int qsd_refresh_usage(const struct lu_env *env, struct lquota_entry *lqe)
220 struct qsd_thread_info *qti = qsd_info(env);
221 struct lquota_acct_rec *rec = &qti->qti_acct_rec;
222 struct qsd_qtype_info *qqi = lqe2qqi(lqe);
226 LASSERT(qqi->qqi_acct_obj);
228 /* read disk usage */
229 rc = lquota_disk_read(env, qqi->qqi_acct_obj, &lqe->lqe_id,
230 (struct dt_rec *)rec);
237 if (qqi->qqi_qsd->qsd_is_md)
238 lqe->lqe_usage = rec->ispace;
240 lqe->lqe_usage = toqb(rec->bspace);
243 LQUOTA_ERROR(lqe, "failed to read disk usage, rc:%d", rc);
247 LQUOTA_DEBUG(lqe, "disk usage: %llu", lqe->lqe_usage);
252 * Update slave or global index copy.
254 * \param env - the environment passed by the caller
255 * \param qqi - is the qsd_type_info structure managing the index to be
257 * \param qid - is the identifier for which we need to update the quota
259 * \param global - is set to true when updating the global index copy and to
260 * false for the slave index copy.
261 * \param ver - is the new version of the index. If equal to 0, the version
262 * of the index isn't changed
263 * \param rec - is the updated record to insert in the index file
265 int qsd_update_index(const struct lu_env *env, struct qsd_qtype_info *qqi,
266 union lquota_id *qid, bool global, __u64 ver, void *rec)
268 struct thandle *th = NULL;
269 struct dt_object *obj;
270 __u64 *new_verp = NULL;
275 obj = global ? qqi->qqi_glb_obj : qqi->qqi_slv_obj;
277 /* allocate transaction */
278 th = dt_trans_create(env, qqi->qqi_qsd->qsd_dev);
282 /* reserve enough credits to update record in index file */
283 rc = lquota_disk_declare_write(env, th, obj, qid);
287 /* start local transaction */
288 rc = dt_trans_start_local(env, qqi->qqi_qsd->qsd_dev, th);
293 /* Update record in global index copy */
294 struct lquota_glb_rec *glb_rec = (struct lquota_glb_rec *)rec;
296 CDEBUG(D_QUOTA, "%s: updating global index hardlimit: %llu, "
297 "softlimit: %llu for id %llu\n",
298 qqi->qqi_qsd->qsd_svname, glb_rec->qbr_hardlimit,
299 glb_rec->qbr_softlimit, qid->qid_uid);
301 /* Update record in slave index copy */
302 struct lquota_slv_rec *slv_rec = (struct lquota_slv_rec *)rec;
304 CDEBUG(D_QUOTA, "%s: update granted to %llu for id %llu"
305 "\n", qqi->qqi_qsd->qsd_svname, slv_rec->qsr_granted,
311 flags = LQUOTA_SET_VER;
314 /* write new record to index file */
315 rc = lquota_disk_write(env, th, obj, qid, (struct dt_rec *)rec, flags,
319 dt_trans_stop(env, qqi->qqi_qsd->qsd_dev, th);
321 CERROR("%s: failed to update %s index copy for id %llu, : rc = %d\n",
322 qqi->qqi_qsd->qsd_svname,
323 global ? "global" : "slave", qid->qid_uid, rc);
324 else if (flags == LQUOTA_SET_VER)
325 qsd_bump_version(qqi, ver, global);
330 * Update in-memory lquota entry with new quota setting from record \rec.
331 * The record can either be a global record (i.e. lquota_glb_rec) or a slave
332 * index record (i.e. lquota_slv_rec). In the former case, \global should be
335 * \param env - the environment passed by the caller
336 * \param lqe - is the quota entry associated with the identifier
337 * \param global - is set to true when updating the record is of type
338 * lquota_glb_rec. Otherwise, it is a lquota_slv_rec record.
339 * \param rec - is the updated record received from the master.
341 int qsd_update_lqe(const struct lu_env *env, struct lquota_entry *lqe,
342 bool global, void *rec)
346 LASSERT(lqe != NULL);
347 LASSERT(!lqe_is_master(lqe));
349 /* updating lqe is always serialized, no locking needed. */
351 struct lquota_glb_rec *glb_rec = (struct lquota_glb_rec *)rec;
353 /* doesn't change quota enforcement if the quota entry is still
354 * using default quota. */
355 if (LQUOTA_FLAG(glb_rec->qbr_time) & LQUOTA_FLAG_DEFAULT &&
356 glb_rec->qbr_hardlimit == 0 && glb_rec->qbr_softlimit == 0)
359 LQUOTA_DEBUG(lqe, "the ID has been set quota, so clear the"
360 " default quota flag");
361 lqe->lqe_is_default = false;
363 /* change enforcement status based on new hard/soft limit */
364 if (lqe->lqe_id.qid_uid != 0 && (glb_rec->qbr_hardlimit != 0 ||
365 glb_rec->qbr_softlimit != 0))
366 lqe->lqe_enforced = true;
368 lqe->lqe_enforced = false;
370 LQUOTA_DEBUG(lqe, "updating global index hardlimit: %llu, "
371 "softlimit: %llu", glb_rec->qbr_hardlimit,
372 glb_rec->qbr_softlimit);
374 struct lquota_slv_rec *slv_rec = (struct lquota_slv_rec *)rec;
376 lqe->lqe_granted = slv_rec->qsr_granted;
378 LQUOTA_DEBUG(lqe, "updating slave index, granted:%llu",
379 slv_rec->qsr_granted);