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36 * lustre/mds/mds_log.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Andreas Dilger <adilger@clusterfs.com>
40 * Author: Phil Schwan <phil@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <linux/module.h>
46 #include <linux/version.h>
48 #include <libcfs/list.h>
49 #include <obd_class.h>
50 #include <lustre_fsfilt.h>
51 #include <lustre_mds.h>
52 #include <lustre_log.h>
54 #include "mds_internal.h"
56 static int mds_llog_origin_add(const struct lu_env *env,
57 struct llog_ctxt *ctxt,
58 struct llog_rec_hdr *rec,
59 struct lov_stripe_md *lsm,
60 struct llog_cookie *logcookies, int numcookies)
62 struct obd_device *obd = ctxt->loc_obd;
63 struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
64 struct llog_ctxt *lctxt;
68 lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
69 rc = llog_obd_add(env, lctxt, rec, lsm, logcookies, numcookies);
75 static int mds_llog_origin_connect(struct llog_ctxt *ctxt,
76 struct llog_logid *logid,
78 struct obd_uuid *uuid)
80 struct obd_device *obd = ctxt->loc_obd;
81 struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
82 struct llog_ctxt *lctxt;
86 lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
87 rc = llog_connect(lctxt, logid, gen, uuid);
92 static struct llog_operations mds_ost_orig_logops = {
93 .lop_obd_add = mds_llog_origin_add,
94 .lop_connect = mds_llog_origin_connect,
97 static int mds_llog_repl_cancel(const struct lu_env *env,
98 struct llog_ctxt *ctxt,
99 struct lov_stripe_md *lsm,
100 int count, struct llog_cookie *cookies,
103 struct obd_device *obd = ctxt->loc_obd;
104 struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
105 struct llog_ctxt *lctxt;
109 lctxt = llog_get_context(lov_obd, ctxt->loc_idx);
110 rc = llog_cancel(env, lctxt, lsm, count, cookies, flags);
111 llog_ctxt_put(lctxt);
115 static struct llog_operations mds_size_repl_logops = {
116 lop_cancel: mds_llog_repl_cancel,
119 static struct llog_operations changelog_orig_logops;
121 static int llog_changelog_cancel_cb(const struct lu_env *env,
122 struct llog_handle *llh,
123 struct llog_rec_hdr *hdr, void *data)
125 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
126 struct llog_cookie cookie;
127 long long endrec = *(long long *)data;
129 struct obd_device *obd;
134 /* This is always a (sub)log, not the catalog */
135 LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
137 if (rec->cr.cr_index > endrec)
138 /* records are in order, so we're done */
139 RETURN(LLOG_PROC_BREAK);
141 cookie.lgc_lgl = llh->lgh_id;
142 cookie.lgc_index = hdr->lrh_index;
143 obd = llh->lgh_ctxt->loc_exp->exp_obd;
144 inode = llh->lgh_file->f_dentry->d_inode;
146 /* XXX This is a workaround for the deadlock of changelog adding vs.
147 * changelog cancelling. Changelog adding always start transaction
148 * before acquiring the catlog lock (lgh_lock), whereas, changelog
149 * cancelling do start transaction after holding catlog lock.
151 * We start the transaction earlier here to keep the locking ordering:
152 * 'start transaction -> catlog lock'. LU-81. */
153 trans_h = fsfilt_start_log(obd, inode, FSFILT_OP_CANCEL_UNLINK,
155 if (IS_ERR(trans_h)) {
156 CERROR("fsfilt_start_log failed: %ld\n", PTR_ERR(trans_h));
157 RETURN(PTR_ERR(trans_h));
160 /* cancel them one at a time. I suppose we could store up the cookies
161 and cancel them all at once; probably more efficient, but this is
162 done as a user call, so who cares... */
163 rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle, 1,
166 err = fsfilt_commit(obd, inode, trans_h, 0);
168 CERROR("fsfilt_commit failed: %d\n", err);
169 rc = (rc >= 0) ? err : rc;
172 RETURN(rc < 0 ? rc : 0);
175 static int llog_changelog_cancel(const struct lu_env *env,
176 struct llog_ctxt *ctxt,
177 struct lov_stripe_md *lsm, int count,
178 struct llog_cookie *cookies, int flags)
180 struct llog_handle *cathandle = ctxt->loc_handle;
184 /* This should only be called with the catalog handle */
185 LASSERT(cathandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
187 rc = llog_cat_process(env, cathandle, llog_changelog_cancel_cb,
188 (void *)cookies, 0, 0);
190 /* 0 or 1 means we're done */
193 CERROR("cancel idx %u of catalog "LPX64" rc=%d\n",
194 cathandle->lgh_last_idx, cathandle->lgh_id.lgl_oid, rc);
199 int mds_changelog_llog_init(struct obd_device *obd, struct obd_device *tgt)
201 struct llog_ctxt *ctxt = NULL, *uctxt = NULL;
204 /* see osc_llog_init */
205 changelog_orig_logops = llog_lvfs_ops;
206 changelog_orig_logops.lop_obd_add = llog_obd_origin_add;
207 changelog_orig_logops.lop_cancel = llog_changelog_cancel;
209 rc = llog_setup(NULL, obd, &obd->obd_olg, LLOG_CHANGELOG_ORIG_CTXT,
210 tgt, &changelog_orig_logops);
212 CERROR("%s: changelog llog setup failed: rc = %d\n",
217 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
220 rc = llog_open_create(NULL, ctxt, &ctxt->loc_handle, NULL,
223 GOTO(out_cleanup, rc);
225 rc = llog_cat_init_and_process(NULL, ctxt->loc_handle);
229 /* setup user changelog */
230 rc = llog_setup(NULL, obd, &obd->obd_olg,
231 LLOG_CHANGELOG_USER_ORIG_CTXT, tgt,
232 &changelog_orig_logops);
234 CERROR("%s: changelog users llog setup failed: rc = %d\n",
239 uctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
242 rc = llog_open_create(NULL, uctxt, &uctxt->loc_handle, NULL,
245 GOTO(out_ucleanup, rc);
247 rc = llog_cat_init_and_process(NULL, uctxt->loc_handle);
249 GOTO(out_uclose, rc);
252 llog_ctxt_put(uctxt);
255 llog_cat_close(NULL, uctxt->loc_handle);
257 llog_cleanup(NULL, uctxt);
259 llog_cat_close(NULL, ctxt->loc_handle);
261 llog_cleanup(NULL, ctxt);
264 EXPORT_SYMBOL(mds_changelog_llog_init);
266 int mds_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
267 struct obd_device *disk_obd, int *index)
269 struct obd_device *lov_obd = obd->u.mds.mds_lov_obd;
270 struct llog_ctxt *ctxt;
274 LASSERT(olg == &obd->obd_olg);
275 rc = llog_setup(NULL, obd, &obd->obd_olg, LLOG_MDS_OST_ORIG_CTXT,
276 disk_obd, &mds_ost_orig_logops);
280 rc = llog_setup(NULL, obd, &obd->obd_olg, LLOG_SIZE_REPL_CTXT,
281 disk_obd, &mds_size_repl_logops);
285 rc = obd_llog_init(lov_obd, &lov_obd->obd_olg, disk_obd, index);
287 CERROR("lov_llog_init err %d\n", rc);
288 GOTO(err_cleanup, rc);
293 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
295 llog_cleanup(NULL, ctxt);
297 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
299 llog_cleanup(NULL, ctxt);
303 int mds_llog_finish(struct obd_device *obd, int count)
305 struct llog_ctxt *ctxt;
309 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
311 llog_cleanup(NULL, ctxt);
313 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
315 llog_cleanup(NULL, ctxt);
317 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
319 llog_cat_close(NULL, ctxt->loc_handle);
320 llog_cleanup(NULL, ctxt);
323 ctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
325 llog_cat_close(NULL, ctxt->loc_handle);
326 llog_cleanup(NULL, ctxt);
331 static int mds_llog_add_unlink(struct obd_device *obd,
332 struct lov_stripe_md *lsm, obd_count count,
333 struct llog_cookie *logcookie, int cookies)
335 struct llog_unlink_rec *lur;
336 struct llog_ctxt *ctxt;
339 if (cookies < lsm->lsm_stripe_count)
342 /* first prepare unlink log record */
345 RETURN(rc = -ENOMEM);
346 lur->lur_hdr.lrh_len = lur->lur_tail.lrt_len = sizeof(*lur);
347 lur->lur_hdr.lrh_type = MDS_UNLINK_REC;
348 lur->lur_count = count;
350 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
351 rc = llog_obd_add(NULL, ctxt, &lur->lur_hdr, lsm, logcookie, cookies);
358 int mds_log_op_unlink(struct obd_device *obd,
359 struct lov_mds_md *lmm, int lmm_size,
360 struct llog_cookie *logcookies, int cookies_size)
362 struct mds_obd *mds = &obd->u.mds;
363 struct lov_stripe_md *lsm = NULL;
367 if (IS_ERR(mds->mds_lov_obd))
368 RETURN(PTR_ERR(mds->mds_lov_obd));
370 rc = obd_unpackmd(mds->mds_lov_exp, &lsm, lmm, lmm_size);
373 rc = mds_llog_add_unlink(obd, lsm, 0, logcookies,
374 cookies_size / sizeof(struct llog_cookie));
375 obd_free_memmd(mds->mds_lov_exp, &lsm);
378 EXPORT_SYMBOL(mds_log_op_unlink);
380 int mds_log_op_orphan(struct obd_device *obd, struct lov_stripe_md *lsm,
383 struct mds_obd *mds = &obd->u.mds;
384 struct llog_cookie logcookie;
388 if (IS_ERR(mds->mds_lov_obd))
389 RETURN(PTR_ERR(mds->mds_lov_obd));
391 rc = mds_llog_add_unlink(obd, lsm, count - 1, &logcookie, 1);