/** Add a CL_MARK record to the changelog
* \param mdd
* \param markerflags - CLM_*
* \retval 0 ok
*/
int mdd_changelog_write_header(const struct lu_env *env,
struct mdd_device *mdd, int markerflags)
{
struct obd_device *obd = mdd2obd_dev(mdd);
struct llog_changelog_rec *rec;
struct lu_buf *buf;
struct llog_ctxt *ctxt;
int reclen;
int len = strlen(obd->obd_name);
int rc;
ENTRY;
if (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) {
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
RETURN(0);
}
reclen = llog_data_len(sizeof(*rec) + len);
buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
if (buf->lb_buf == NULL)
RETURN(-ENOMEM);
rec = buf->lb_buf;
rec->cr.cr_flags = CLF_VERSION;
rec->cr.cr_type = CL_MARK;
rec->cr.cr_namelen = len;
memcpy(changelog_rec_name(&rec->cr), obd->obd_name, rec->cr.cr_namelen);
/* Status and action flags */
rec->cr.cr_markerflags = mdd->mdd_cl.mc_flags | markerflags;
rec->cr_hdr.lrh_len = llog_data_len(changelog_rec_size(&rec->cr) +
rec->cr.cr_namelen);
rec->cr_hdr.lrh_type = CHANGELOG_REC;
rec->cr.cr_time = cl_time();
spin_lock(&mdd->mdd_cl.mc_lock);
rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
spin_unlock(&mdd->mdd_cl.mc_lock);
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
LASSERT(ctxt);
rc = llog_cat_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL);
if (rc > 0)
rc = 0;
llog_ctxt_put(ctxt);
/* assume on or off event; reset repeat-access time */
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
RETURN(rc);
}
void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
{
struct llog_rec_tail *tail = NULL;
__swab32s(&rec->lrh_len);
__swab32s(&rec->lrh_index);
__swab32s(&rec->lrh_type);
__swab32s(&rec->lrh_id);
switch (rec->lrh_type) {
case OST_SZ_REC:
{
struct llog_size_change_rec *lsc =
(struct llog_size_change_rec *)rec;
lustre_swab_ll_fid(&lsc->lsc_fid);
__swab32s(&lsc->lsc_ioepoch);
tail = &lsc->lsc_tail;
break;
}
case MDS_UNLINK_REC:
{
struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
__swab64s(&lur->lur_oid);
__swab32s(&lur->lur_oseq);
__swab32s(&lur->lur_count);
tail = &lur->lur_tail;
break;
}
case MDS_UNLINK64_REC:
{
struct llog_unlink64_rec *lur =
(struct llog_unlink64_rec *)rec;
lustre_swab_lu_fid(&lur->lur_fid);
__swab32s(&lur->lur_count);
tail = &lur->lur_tail;
break;
}
case CHANGELOG_REC:
{
struct llog_changelog_rec *cr =
(struct llog_changelog_rec *)rec;
__swab16s(&cr->cr.cr_namelen);
__swab16s(&cr->cr.cr_flags);
__swab32s(&cr->cr.cr_type);
__swab64s(&cr->cr.cr_index);
__swab64s(&cr->cr.cr_prev);
__swab64s(&cr->cr.cr_time);
lustre_swab_lu_fid(&cr->cr.cr_tfid);
lustre_swab_lu_fid(&cr->cr.cr_pfid);
if (cr->cr.cr_flags & CLF_RENAME) {
struct changelog_ext_rename *rnm =
changelog_rec_rename(&cr->cr);
lustre_swab_lu_fid(&rnm->cr_sfid);
lustre_swab_lu_fid(&rnm->cr_spfid);
}
/*
* Because the tail follows a variable-length structure we need
* to compute its location at runtime
*/
tail = (struct llog_rec_tail *)((char *)&cr->cr +
changelog_rec_size(&cr->cr) +
cr->cr.cr_namelen);
break;
}
case CHANGELOG_USER_REC:
{
struct llog_changelog_user_rec *cur =
(struct llog_changelog_user_rec *)rec;
__swab32s(&cur->cur_id);
__swab64s(&cur->cur_endrec);
tail = &cur->cur_tail;
break;
}
case HSM_AGENT_REC: {
struct llog_agent_req_rec *arr =
(struct llog_agent_req_rec *)rec;
__swab32s(&arr->arr_hai.hai_len);
__swab32s(&arr->arr_hai.hai_action);
lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
__swab64s(&arr->arr_hai.hai_cookie);
__swab64s(&arr->arr_hai.hai_extent.offset);
__swab64s(&arr->arr_hai.hai_extent.length);
__swab64s(&arr->arr_hai.hai_gid);
/* no swabing for opaque data */
/* hai_data[0]; */
break;
}
case MDS_SETATTR64_REC:
{
struct llog_setattr64_rec *lsr =
(struct llog_setattr64_rec *)rec;
lustre_swab_ost_id(&lsr->lsr_oi);
__swab32s(&lsr->lsr_uid);
__swab32s(&lsr->lsr_uid_h);
__swab32s(&lsr->lsr_gid);
__swab32s(&lsr->lsr_gid_h);
__swab64s(&lsr->lsr_valid);
tail = &lsr->lsr_tail;
break;
}
case OBD_CFG_REC:
/* these are swabbed as they are consumed */
break;
case LLOG_HDR_MAGIC:
{
struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
__swab64s(&llh->llh_timestamp);
__swab32s(&llh->llh_count);
__swab32s(&llh->llh_bitmap_offset);
__swab32s(&llh->llh_flags);
__swab32s(&llh->llh_size);
__swab32s(&llh->llh_cat_idx);
tail = LLOG_HDR_TAIL(llh);
break;
}
case LLOG_LOGID_MAGIC:
{
struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
lustre_swab_llog_id(&lid->lid_id);
tail = &lid->lid_tail;
break;
}
case LLOG_GEN_REC:
{
struct llog_gen_rec *lgr = (struct llog_gen_rec *)rec;
__swab64s(&lgr->lgr_gen.mnt_cnt);
__swab64s(&lgr->lgr_gen.conn_cnt);
tail = &lgr->lgr_tail;
break;
}
case LLOG_PAD_MAGIC:
break;
default:
CERROR("Unknown llog rec type %#x swabbing rec %p\n",
rec->lrh_type, rec);
}
if (tail) {
__swab32s(&tail->lrt_len);
__swab32s(&tail->lrt_index);
}
}
