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34 * lustre/lov/lov_log.c
36 * Author: Phil Schwan <phil@clusterfs.com>
37 * Author: Peter Braam <braam@clusterfs.com>
38 * Author: Mike Shaver <shaver@clusterfs.com>
41 #define DEBUG_SUBSYSTEM S_LOV
43 #include <libcfs/libcfs.h>
45 #include <liblustre.h>
48 #include <obd_support.h>
49 #include <lustre_lib.h>
50 #include <lustre_net.h>
51 #include <lustre/lustre_idl.h>
52 #include <lustre_dlm.h>
53 #include <lustre_mds.h>
54 #include <obd_class.h>
57 #include <lprocfs_status.h>
58 #include <lustre_log.h>
60 #include "lov_internal.h"
62 /* Add log records for each OSC that this object is striped over, and return
63 * cookies for each one. We _would_ have nice abstraction here, except that
64 * we need to keep cookies in stripe order, even if some are NULL, so that
65 * the right cookies are passed back to the right OSTs at the client side.
66 * Unset cookies should be all-zero (which will never occur naturally). */
67 static int lov_llog_origin_add(const struct lu_env *env,
68 struct llog_ctxt *ctxt,
69 struct llog_rec_hdr *rec,
70 struct lov_stripe_md *lsm,
71 struct llog_cookie *logcookies, int numcookies)
73 struct obd_device *obd = ctxt->loc_obd;
74 struct lov_obd *lov = &obd->u.lov;
75 int i, rc = 0, cookies = 0;
78 LASSERTF(logcookies && numcookies >= lsm->lsm_stripe_count,
79 "logcookies %p, numcookies %d lsm->lsm_stripe_count %d \n",
80 logcookies, numcookies, lsm->lsm_stripe_count);
82 for (i = 0; i < lsm->lsm_stripe_count; i++) {
83 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
84 struct obd_device *child =
85 lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd;
86 struct llog_ctxt *cctxt = llog_get_context(child, ctxt->loc_idx);
88 /* fill mds unlink/setattr log record */
89 switch (rec->lrh_type) {
90 case MDS_UNLINK_REC: {
91 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
92 lur->lur_oid = loi->loi_id;
93 lur->lur_oseq = loi->loi_seq;
96 case MDS_SETATTR64_REC: {
97 struct llog_setattr64_rec *lsr = (struct llog_setattr64_rec *)rec;
98 lsr->lsr_oid = loi->loi_id;
99 lsr->lsr_oseq = loi->loi_seq;
106 /* inject error in llog_obd_add() below */
107 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FAIL_LOV_LOG_ADD)) {
108 llog_ctxt_put(cctxt);
111 rc = llog_obd_add(env, cctxt, rec, NULL, logcookies + cookies,
112 numcookies - cookies);
113 llog_ctxt_put(cctxt);
115 CERROR("Can't add llog (rc = %d) for stripe %d\n",
117 memset(logcookies + cookies, 0,
118 sizeof(struct llog_cookie));
119 rc = 1; /* skip this cookie */
121 /* Note that rc is always 1 if llog_obd_add was successful */
127 static int lov_llog_origin_connect(struct llog_ctxt *ctxt,
128 struct llog_logid *logid,
129 struct llog_gen *gen,
130 struct obd_uuid *uuid)
132 struct obd_device *obd = ctxt->loc_obd;
133 struct lov_obd *lov = &obd->u.lov;
134 int i, rc = 0, err = 0;
138 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
139 struct obd_device *child;
140 struct llog_ctxt *cctxt;
142 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
144 if (uuid && !obd_uuid_equals(uuid, &lov->lov_tgts[i]->ltd_uuid))
146 CDEBUG(D_CONFIG, "connect %d/%d\n", i, lov->desc.ld_tgt_count);
147 child = lov->lov_tgts[i]->ltd_exp->exp_obd;
148 cctxt = llog_get_context(child, ctxt->loc_idx);
149 rc = llog_connect(cctxt, logid, gen, uuid);
150 llog_ctxt_put(cctxt);
153 CERROR("error osc_llog_connect tgt %d (%d)\n", i, rc);
163 /* the replicators commit callback */
164 static int lov_llog_repl_cancel(const struct lu_env *env,
165 struct llog_ctxt *ctxt,
166 struct lov_stripe_md *lsm,
167 int count, struct llog_cookie *cookies,
171 struct obd_device *obd = ctxt->loc_obd;
175 LASSERT(lsm != NULL);
176 LASSERT(count == lsm->lsm_stripe_count);
180 for (i = 0; i < count; i++, cookies++) {
181 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
182 struct obd_device *child =
183 lov->lov_tgts[loi->loi_ost_idx]->ltd_exp->exp_obd;
184 struct llog_ctxt *cctxt =
185 llog_get_context(child, ctxt->loc_idx);
188 err = llog_cancel(env, cctxt, NULL, 1, cookies, flags);
189 llog_ctxt_put(cctxt);
190 if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
191 CERROR("error: objid "LPX64" subobj "LPX64
192 " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
193 loi->loi_id, loi->loi_ost_idx, err);
202 static struct llog_operations lov_mds_ost_orig_logops = {
203 .lop_obd_add = lov_llog_origin_add,
204 .lop_connect = lov_llog_origin_connect,
207 static struct llog_operations lov_size_repl_logops = {
208 .lop_cancel = lov_llog_repl_cancel,
211 int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
212 struct obd_device *disk_obd, int *index)
214 struct lov_obd *lov = &obd->u.lov;
215 struct obd_device *child;
219 LASSERT(olg == &obd->obd_olg);
220 rc = llog_setup(NULL, obd, olg, LLOG_MDS_OST_ORIG_CTXT, disk_obd,
221 &lov_mds_ost_orig_logops);
225 rc = llog_setup(NULL, obd, olg, LLOG_SIZE_REPL_CTXT, disk_obd,
226 &lov_size_repl_logops);
228 GOTO(err_cleanup, rc);
231 /* count may not match lov->desc.ld_tgt_count during dynamic ost add */
232 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
233 if (!lov->lov_tgts[i])
236 if (index && i != *index)
239 child = lov->lov_tgts[i]->ltd_obd;
240 rc = obd_llog_init(child, &child->obd_olg, disk_obd, &i);
242 CERROR("error osc_llog_init idx %d osc '%s' tgt '%s' "
243 "(rc=%d)\n", i, child->obd_name,
244 disk_obd->obd_name, rc);
248 GOTO(err_cleanup, rc);
251 struct llog_ctxt *ctxt =
252 llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
254 llog_cleanup(NULL, ctxt);
255 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
257 llog_cleanup(NULL, ctxt);
262 int lov_llog_finish(struct obd_device *obd, int count)
264 struct llog_ctxt *ctxt;
268 /* cleanup our llogs only if the ctxts have been setup
269 * (client lov doesn't setup, mds lov does). */
270 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
272 llog_cleanup(NULL, ctxt);
274 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
276 llog_cleanup(NULL, ctxt);
278 /* lov->tgt llogs are cleaned during osc_cleanup. */