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27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
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36 * lustre/lov/lov_log.c
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Peter Braam <braam@clusterfs.com>
40 * Author: Mike Shaver <shaver@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_LOV
44 #include <linux/libcfs/libcfs.h>
46 #include <obd_support.h>
47 #include <lustre_lib.h>
48 #include <lustre_net.h>
49 #include <lustre/lustre_idl.h>
50 #include <lustre_dlm.h>
51 #include <lustre_mds.h>
52 #include <obd_class.h>
55 #include <lprocfs_status.h>
56 #include <lustre_log.h>
58 #include "lov_internal.h"
60 /* Add log records for each OSC that this object is striped over, and return
61 * cookies for each one. We _would_ have nice abstraction here, except that
62 * we need to keep cookies in stripe order, even if some are NULL, so that
63 * the right cookies are passed back to the right OSTs at the client side.
64 * Unset cookies should be all-zero (which will never occur naturally). */
65 static int lov_llog_origin_add(const struct lu_env *env,
66 struct llog_ctxt *ctxt,
67 struct llog_rec_hdr *rec,
68 struct lov_stripe_md *lsm,
69 struct llog_cookie *logcookies, int numcookies)
71 struct obd_device *obd = ctxt->loc_obd;
72 struct lov_obd *lov = &obd->u.lov;
73 int i, rc = 0, cookies = 0;
75 LASSERTF(logcookies && numcookies >= lsm->lsm_stripe_count,
76 "logcookies %p, numcookies %d lsm->lsm_stripe_count %d \n",
77 logcookies, numcookies, lsm->lsm_stripe_count);
79 for (i = 0; i < lsm->lsm_stripe_count; i++) {
80 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
81 struct obd_device *child =
82 lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd;
83 struct llog_ctxt *cctxt = llog_get_context(child, ctxt->loc_idx);
85 /* fill mds unlink/setattr log record */
86 switch (rec->lrh_type) {
87 case MDS_UNLINK_REC: {
88 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
89 lur->lur_oid = ostid_id(&loi->loi_oi);
90 lur->lur_oseq = (__u32)ostid_seq(&loi->loi_oi);
93 case MDS_SETATTR64_REC: {
94 struct llog_setattr64_rec *lsr = (struct llog_setattr64_rec *)rec;
95 lsr->lsr_oi = loi->loi_oi;
102 /* inject error in llog_obd_add() below */
103 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FAIL_LOV_LOG_ADD)) {
104 llog_ctxt_put(cctxt);
107 rc = llog_obd_add(env, cctxt, rec, NULL, logcookies + cookies,
108 numcookies - cookies);
109 llog_ctxt_put(cctxt);
111 CERROR("Can't add llog (rc = %d) for stripe %d\n",
113 memset(logcookies + cookies, 0,
114 sizeof(struct llog_cookie));
115 rc = 1; /* skip this cookie */
117 /* Note that rc is always 1 if llog_obd_add was successful */
123 static int lov_llog_origin_connect(struct llog_ctxt *ctxt,
124 struct llog_logid *logid,
125 struct llog_gen *gen,
126 struct obd_uuid *uuid)
128 struct obd_device *obd = ctxt->loc_obd;
129 struct lov_obd *lov = &obd->u.lov;
130 int i, rc = 0, err = 0;
133 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
134 struct obd_device *child;
135 struct llog_ctxt *cctxt;
137 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
139 if (uuid && !obd_uuid_equals(uuid, &lov->lov_tgts[i]->ltd_uuid))
141 CDEBUG(D_CONFIG, "connect %d/%d\n", i, lov->desc.ld_tgt_count);
142 child = lov->lov_tgts[i]->ltd_exp->exp_obd;
143 cctxt = llog_get_context(child, ctxt->loc_idx);
144 rc = llog_connect(cctxt, logid, gen, uuid);
145 llog_ctxt_put(cctxt);
148 CERROR("error osc_llog_connect tgt %d (%d)\n", i, rc);
158 /* the replicators commit callback */
159 static int lov_llog_repl_cancel(const struct lu_env *env,
160 struct llog_ctxt *ctxt,
161 struct lov_stripe_md *lsm,
162 int count, struct llog_cookie *cookies,
166 struct obd_device *obd = ctxt->loc_obd;
169 LASSERT(lsm != NULL);
170 LASSERT(count == lsm->lsm_stripe_count);
174 for (i = 0; i < count; i++, cookies++) {
175 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
176 struct obd_device *child =
177 lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd;
178 struct llog_ctxt *cctxt =
179 llog_get_context(child, ctxt->loc_idx);
182 err = llog_cancel(env, cctxt, NULL, 1, cookies, flags);
183 llog_ctxt_put(cctxt);
184 if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
185 CERROR("%s: objid "DOSTID" subobj "DOSTID
186 " on OST idx %d: rc = %d\n",
187 obd->obd_name, POSTID(&lsm->lsm_oi),
188 POSTID(&loi->loi_oi), loi->loi_ost_idx, err);
197 static struct llog_operations lov_mds_ost_orig_logops = {
198 .lop_obd_add = lov_llog_origin_add,
199 .lop_connect = lov_llog_origin_connect,
202 static struct llog_operations lov_size_repl_logops = {
203 .lop_cancel = lov_llog_repl_cancel,
206 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
207 struct obd_device *disk_obd, int *index)
209 struct lov_obd *lov = &obd->u.lov;
210 struct obd_device *child;
213 LASSERT(olg == &obd->obd_olg);
214 rc = llog_setup(NULL, obd, olg, LLOG_MDS_OST_ORIG_CTXT, disk_obd,
215 &lov_mds_ost_orig_logops);
219 rc = llog_setup(NULL, obd, olg, LLOG_SIZE_REPL_CTXT, disk_obd,
220 &lov_size_repl_logops);
222 GOTO(err_cleanup, rc);
225 /* count may not match lov->desc.ld_tgt_count during dynamic ost add */
226 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
227 if (!lov->lov_tgts[i])
230 if (index && i != *index)
233 child = lov->lov_tgts[i]->ltd_obd;
234 rc = obd_llog_init(child, &child->obd_olg, disk_obd, &i);
236 CERROR("error osc_llog_init idx %d osc '%s' tgt '%s' "
237 "(rc=%d)\n", i, child->obd_name,
238 disk_obd->obd_name, rc);
242 GOTO(err_cleanup, rc);
245 struct llog_ctxt *ctxt =
246 llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
248 llog_cleanup(NULL, ctxt);
249 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
251 llog_cleanup(NULL, ctxt);
256 int lov_llog_finish(struct obd_device *obd, int count)
258 struct llog_ctxt *ctxt;
260 /* cleanup our llogs only if the ctxts have been setup
261 * (client lov doesn't setup, mds lov does). */
262 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
264 llog_cleanup(NULL, ctxt);
266 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
268 llog_cleanup(NULL, ctxt);
270 /* lov->tgt llogs are cleaned during osc_cleanup. */