mdd->mdd_txn_cb.dtc_txn_stop = mdd_txn_stop_cb;
mdd->mdd_txn_cb.dtc_txn_commit = mdd_txn_commit_cb;
mdd->mdd_txn_cb.dtc_cookie = mdd;
+ mdd->mdd_txn_cb.dtc_tag = LCT_MD_THREAD;
CFS_INIT_LIST_HEAD(&mdd->mdd_txn_cb.dtc_linkage);
mdd->mdd_atime_diff = MAX_ATIME_DIFF;
ENTRY;
mdd_changelog_fini(env, m);
dt_txn_callback_del(m->mdd_child, &m->mdd_txn_cb);
- mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf);
- mdd_object_put(env, m->mdd_dot_lustre);
+ if (m->mdd_dot_lustre_objs.mdd_obf)
+ mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf);
+ if (m->mdd_dot_lustre)
+ mdd_object_put(env, m->mdd_dot_lustre);
if (m->mdd_obd_dev)
mdd_fini_obd(env, m, cfg);
orph_index_fini(env, m);
struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
ENTRY;
- if (!(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN)) {
- CERROR("log is not plain\n");
- RETURN(-EINVAL);
- }
- if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
- CERROR("Not a changelog rec? %d\n", rec->cr_hdr.lrh_type);
- RETURN(-EINVAL);
- }
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cr_hdr.lrh_type == CHANGELOG_REC);
- CDEBUG(D_INODE,
+ CDEBUG(D_INFO,
"seeing record at index %d/%d/"LPU64" t=%x %.*s in log "LPX64"\n",
hdr->lrh_index, rec->cr_hdr.lrh_index, rec->cr_index,
rec->cr_type, rec->cr_namelen, rec->cr_name,
RETURN(LLOG_PROC_BREAK);
}
+static int changelog_user_init_cb(struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct mdd_device *mdd = (struct mdd_device *)data;
+ struct llog_changelog_user_rec *rec =
+ (struct llog_changelog_user_rec *)hdr;
+ ENTRY;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC);
+
+ CDEBUG(D_INFO, "seeing user at index %d/%d id=%d endrec="LPU64
+ " in log "LPX64"\n", hdr->lrh_index, rec->cur_hdr.lrh_index,
+ rec->cur_id, rec->cur_endrec, llh->lgh_id.lgl_oid);
+
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = rec->cur_id;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ RETURN(LLOG_PROC_BREAK);
+}
+
+
static int mdd_changelog_llog_init(struct mdd_device *mdd)
{
struct obd_device *obd = mdd2obd_dev(mdd);
struct llog_ctxt *ctxt;
int rc;
+ /* Find last changelog entry number */
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
if (ctxt == NULL) {
- CERROR("no context\n");
+ CERROR("no changelog context\n");
return -EINVAL;
}
if (!ctxt->loc_handle) {
- CERROR("no handle\n");
+ llog_ctxt_put(ctxt);
return -EINVAL;
}
+
rc = llog_cat_reverse_process(ctxt->loc_handle, changelog_init_cb, mdd);
llog_ctxt_put(ctxt);
- if (rc < 0)
+ if (rc < 0) {
CERROR("changelog init failed: %d\n", rc);
- else
- rc = 0; /* llog_proc_break is ok */
+ return rc;
+ }
+ CDEBUG(D_IOCTL, "changelog starting index="LPU64"\n",
+ mdd->mdd_cl.mc_index);
- CDEBUG(D_INODE, "changelog_init index="LPU64"\n", mdd->mdd_cl.mc_index);
+ /* Find last changelog user id */
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL) {
+ CERROR("no changelog user context\n");
+ return -EINVAL;
+ }
+ if (!ctxt->loc_handle) {
+ llog_ctxt_put(ctxt);
+ return -EINVAL;
+ }
+
+ rc = llog_cat_reverse_process(ctxt->loc_handle, changelog_user_init_cb,
+ mdd);
+ llog_ctxt_put(ctxt);
+
+ if (rc < 0) {
+ CERROR("changelog user init failed: %d\n", rc);
+ return rc;
+ }
+
+ /* If we have registered users, assume we want changelogs on */
+ if (mdd->mdd_cl.mc_lastuser > 0)
+ rc = mdd_changelog_on(mdd, 1);
return rc;
}
mdd->mdd_cl.mc_index = 0;
spin_lock_init(&mdd->mdd_cl.mc_lock);
cfs_waitq_init(&mdd->mdd_cl.mc_waitq);
-
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
mdd->mdd_cl.mc_flags = 0; /* off by default */
- mdd->mdd_cl.mc_mask = CL_DEFMASK;
+ mdd->mdd_cl.mc_mask = CHANGELOG_DEFMASK;
+ spin_lock_init(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = 0;
+
rc = mdd_changelog_llog_init(mdd);
if (rc) {
CERROR("Changelog setup during init failed %d\n", rc);
mdd->mdd_cl.mc_flags |= CLM_ERR;
}
+
return rc;
}
mdd->mdd_cl.mc_flags = 0;
}
+/* Start / stop recording */
+int mdd_changelog_on(struct mdd_device *mdd, int on)
+{
+ int rc = 0;
+
+ if ((on == 1) && ((mdd->mdd_cl.mc_flags & CLM_ON) == 0)) {
+ LCONSOLE_INFO("%s: changelog on\n", mdd2obd_dev(mdd)->obd_name);
+ if (mdd->mdd_cl.mc_flags & CLM_ERR) {
+ CERROR("Changelogs cannot be enabled due to error "
+ "condition (see %s log).\n",
+ mdd2obd_dev(mdd)->obd_name);
+ rc = -ESRCH;
+ } else {
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags |= CLM_ON;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ rc = mdd_changelog_write_header(mdd, CLM_START);
+ }
+ } else if ((on == 0) && ((mdd->mdd_cl.mc_flags & CLM_ON) == CLM_ON)) {
+ LCONSOLE_INFO("%s: changelog off\n",mdd2obd_dev(mdd)->obd_name);
+ rc = mdd_changelog_write_header(mdd, CLM_FINI);
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags &= ~CLM_ON;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ }
+ return rc;
+}
+
/** Add a changelog entry \a rec to the changelog llog
* \param mdd
* \param rec
{
struct obd_device *obd = mdd2obd_dev(mdd);
struct llog_ctxt *ctxt;
+ long long unsigned cur;
int rc;
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
if (ctxt == NULL)
return -ENXIO;
- /* Some records purged; reset repeat-access time */
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ cur = (long long)mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ if (endrec > cur)
+ endrec = cur;
+
+ /* purge to "0" is shorthand for everything */
+ if (endrec == 0)
+ endrec = cur;
+
+ /* If purging all records, write a header entry so we don't have an
+ empty catalog and we're sure to have a valid starting index next
+ time. In case of crash, we just restart with old log so we're
+ allright. */
+ if (endrec == cur) {
+ rc = mdd_changelog_write_header(mdd, CLM_PURGE);
+ if (rc)
+ goto out;
+ }
+
+ /* Some records were purged, so reset repeat-access time (so we
+ record new mtime update records, so users can see a file has been
+ changed since the last purge) */
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
rc = llog_cancel(ctxt, NULL, 1, (struct llog_cookie *)&endrec, 0);
-
+out:
llog_ctxt_put(ctxt);
-
return rc;
}
memcpy(fid, &LU_DOT_LUSTRE_FID, sizeof(struct lu_fid));
mdo = llo_store_create_index(env, &m->mdd_md_dev, m->mdd_child,
- mdd_root_dir_name, mdd_dot_lustre_name,
+ mdd_root_dir_name, dot_lustre_name,
fid, &dt_directory_features);
/* .lustre dir may be already present */
if (IS_ERR(mdo) && PTR_ERR(mdo) != -EEXIST) {
rc = PTR_ERR(mdo);
CERROR("creating obj [%s] fid = "DFID" rc = %d\n",
- mdd_dot_lustre_name, PFID(fid), rc);
+ dot_lustre_name, PFID(fid), rc);
RETURN(rc);
}
+ if (!IS_ERR(mdo))
+ lu_object_put(env, &mdo->mo_lu);
+
return 0;
}
return 0;
}
+static int dot_lustre_xattr_list(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf)
+{
+ return -EPERM;
+}
+
static int dot_lustre_mdd_open(const struct lu_env *env, struct md_object *obj,
int flags)
{
}
static int dot_lustre_path(const struct lu_env *env, struct md_object *obj,
- char *path, int pathlen, __u64 recno, int *linkno)
+ char *path, int pathlen, __u64 *recno, int *linkno)
{
return -ENOSYS;
}
return 0;
}
+static dt_obj_version_t dot_lustre_version_get(const struct lu_env *env,
+ struct md_object *obj)
+{
+ return 0;
+}
+
+static void dot_lustre_version_set(const struct lu_env *env,
+ struct md_object *obj,
+ dt_obj_version_t version)
+{
+ return;
+}
+
+
static struct md_object_operations mdd_dot_lustre_obj_ops = {
.moo_attr_get = dot_lustre_attr_get,
.moo_attr_set = dot_lustre_attr_set,
.moo_xattr_get = dot_lustre_xattr_get,
+ .moo_xattr_list = dot_lustre_xattr_list,
.moo_open = dot_lustre_mdd_open,
.moo_close = dot_lustre_close,
.moo_readpage = mdd_readpage,
+ .moo_version_get = dot_lustre_version_get,
+ .moo_version_set = dot_lustre_version_set,
.moo_path = dot_lustre_path
};
}
static int obf_path(const struct lu_env *env, struct md_object *obj,
- char *path, int pathlen, __u64 recno, int *linkno)
+ char *path, int pathlen, __u64 *recno, int *linkno)
{
return -ENOSYS;
}
while (*name == '[')
name++;
- sscanf(name, SFID, &(f->f_seq), &(f->f_oid),
- &(f->f_ver));
+ sscanf(name, SFID, RFID(f));
if (!fid_is_sane(f)) {
CWARN("bad FID format [%s], should be "DFID"\n", lname->ln_name,
(__u64)1, 2, 0);
return rc;
dt_dot_lustre = dt_store_open(env, m->mdd_child, mdd_root_dir_name,
- mdd_dot_lustre_name, fid);
+ dot_lustre_name, fid);
if (IS_ERR(dt_dot_lustre)) {
rc = PTR_ERR(dt_dot_lustre);
GOTO(out, rc);
m->mdd_dot_lustre = lu2mdd_obj(lu_object_locate(dt_dot_lustre->do_lu.lo_header,
&mdd_device_type));
- lu_object_put(env, &dt_dot_lustre->do_lu);
-
m->mdd_dot_lustre->mod_obj.mo_dir_ops = &mdd_dot_lustre_dir_ops;
m->mdd_dot_lustre->mod_obj.mo_ops = &mdd_dot_lustre_obj_ops;
struct md_device *m,
struct lustre_capa_key *key)
{
+ struct mds_capa_info info = { .uuid = NULL, .capa = key };
struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
struct obd_export *lov_exp = mdd2obd_dev(mdd)->u.mds.mds_osc_exp;
int rc;
ENTRY;
rc = obd_set_info_async(lov_exp, sizeof(KEY_CAPA_KEY), KEY_CAPA_KEY,
- sizeof(*key), key, NULL);
+ sizeof(info), &info, NULL);
RETURN(rc);
}
+static int mdd_llog_ctxt_get(const struct lu_env *env, struct md_device *m,
+ int idx, void **h)
+{
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ *h = llog_group_get_ctxt(&mdd2obd_dev(mdd)->obd_olg, idx);
+ return (*h == NULL ? -ENOENT : 0);
+}
+
static struct lu_device *mdd_device_alloc(const struct lu_env *env,
struct lu_device_type *t,
struct lustre_cfg *lcfg)
}
EXPORT_SYMBOL(md_capainfo);
+static int mdd_changelog_user_register(struct mdd_device *mdd, int *id)
+{
+ struct llog_ctxt *ctxt;
+ struct llog_changelog_user_rec *rec;
+ int rc;
+ ENTRY;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ RETURN(-ENXIO);
+
+ OBD_ALLOC_PTR(rec);
+ if (rec == NULL) {
+ llog_ctxt_put(ctxt);
+ RETURN(-ENOMEM);
+ }
+
+ /* Assume we want it on since somebody registered */
+ rc = mdd_changelog_on(mdd, 1);
+ if (rc)
+ GOTO(out, rc);
+
+ rec->cur_hdr.lrh_len = sizeof(*rec);
+ rec->cur_hdr.lrh_type = CHANGELOG_USER_REC;
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ if (mdd->mdd_cl.mc_lastuser == (unsigned int)(-1)) {
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+ CERROR("Maximum number of changelog users exceeded!\n");
+ GOTO(out, rc = -EOVERFLOW);
+ }
+ *id = rec->cur_id = ++mdd->mdd_cl.mc_lastuser;
+ rec->cur_endrec = mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ rc = llog_add(ctxt, &rec->cur_hdr, NULL, NULL, 0);
+
+ CDEBUG(D_IOCTL, "Registered changelog user %d\n", *id);
+out:
+ OBD_FREE_PTR(rec);
+ llog_ctxt_put(ctxt);
+ RETURN(rc);
+}
+
+struct mdd_changelog_user_data {
+ __u64 mcud_endrec; /**< purge record for this user */
+ __u64 mcud_minrec; /**< lowest changelog recno still referenced */
+ __u32 mcud_id;
+ __u32 mcud_minid; /**< user id with lowest rec reference */
+ __u32 mcud_usercount;
+ int mcud_found:1;
+};
+#define MCUD_UNREGISTER -1LL
+
+/** Two things:
+ * 1. Find the smallest record everyone is willing to purge
+ * 2. Update the last purgeable record for this user
+ */
+static int mdd_changelog_user_purge_cb(struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct llog_changelog_user_rec *rec;
+ struct mdd_changelog_user_data *mcud =
+ (struct mdd_changelog_user_data *)data;
+ int rc;
+ ENTRY;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ rec = (struct llog_changelog_user_rec *)hdr;
+
+ mcud->mcud_usercount++;
+
+ /* If we have a new endrec for this id, use it for the following
+ min check instead of its old value */
+ if (rec->cur_id == mcud->mcud_id)
+ rec->cur_endrec = max(rec->cur_endrec, mcud->mcud_endrec);
+
+ /* Track the minimum referenced record */
+ if (mcud->mcud_minid == 0 || mcud->mcud_minrec > rec->cur_endrec) {
+ mcud->mcud_minid = rec->cur_id;
+ mcud->mcud_minrec = rec->cur_endrec;
+ }
+
+ if (rec->cur_id != mcud->mcud_id)
+ RETURN(0);
+
+ /* Update this user's record */
+ mcud->mcud_found = 1;
+
+ /* Special case: unregister this user */
+ if (mcud->mcud_endrec == MCUD_UNREGISTER) {
+ struct llog_cookie cookie;
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_index = hdr->lrh_index;
+ rc = llog_cat_cancel_records(llh->u.phd.phd_cat_handle,
+ 1, &cookie);
+ if (rc == 0)
+ mcud->mcud_usercount--;
+ RETURN(rc);
+ }
+
+ /* Update the endrec */
+ CDEBUG(D_IOCTL, "Rewriting changelog user %d endrec to "LPU64"\n",
+ mcud->mcud_id, rec->cur_endrec);
+
+ /* hdr+1 is loc of data */
+ hdr->lrh_len -= sizeof(*hdr) + sizeof(struct llog_rec_tail);
+ rc = llog_write_rec(llh, hdr, NULL, 0, (void *)(hdr + 1),
+ hdr->lrh_index);
+
+ RETURN(rc);
+}
+
+static int mdd_changelog_user_purge(struct mdd_device *mdd, int id,
+ long long endrec)
+{
+ struct mdd_changelog_user_data data;
+ struct llog_ctxt *ctxt;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_IOCTL, "Purge request: id=%d, endrec="LPD64"\n", id, endrec);
+
+ data.mcud_id = id;
+ data.mcud_minid = 0;
+ data.mcud_minrec = 0;
+ data.mcud_usercount = 0;
+ data.mcud_endrec = endrec;
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ endrec = mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ if ((data.mcud_endrec == 0) ||
+ ((data.mcud_endrec > endrec) &&
+ (data.mcud_endrec != MCUD_UNREGISTER)))
+ data.mcud_endrec = endrec;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ return -ENXIO;
+ LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
+
+ rc = llog_cat_process(ctxt->loc_handle, mdd_changelog_user_purge_cb,
+ (void *)&data, 0, 0);
+ if ((rc >= 0) && (data.mcud_minrec > 0)) {
+ CDEBUG(D_IOCTL, "Purging changelog entries up to "LPD64
+ ", referenced by "CHANGELOG_USER_PREFIX"%d\n",
+ data.mcud_minrec, data.mcud_minid);
+ rc = mdd_changelog_llog_cancel(mdd, data.mcud_minrec);
+ } else {
+ CWARN("Could not determine changelog records to purge; rc=%d\n",
+ rc);
+ }
+
+ llog_ctxt_put(ctxt);
+
+ if (!data.mcud_found) {
+ CWARN("No entry for user %d. Last changelog reference is "
+ LPD64" by changelog user %d\n", data.mcud_id,
+ data.mcud_minrec, data.mcud_minid);
+ rc = -ENOENT;
+ }
+
+ if (!rc && data.mcud_usercount == 0)
+ /* No more users; turn changelogs off */
+ rc = mdd_changelog_on(mdd, 0);
+
+ RETURN (rc);
+}
+
+/** mdd_iocontrol
+ * May be called remotely from mdt_iocontrol_handle or locally from
+ * mdt_iocontrol. Data may be freeform - remote handling doesn't enforce
+ * an obd_ioctl_data format (but local ioctl handler does).
+ * \param cmd - ioc
+ * \param len - data len
+ * \param karg - ioctl data, in kernel space
+ */
+static int mdd_iocontrol(const struct lu_env *env, struct md_device *m,
+ unsigned int cmd, int len, void *karg)
+{
+ struct mdd_device *mdd;
+ struct obd_ioctl_data *data = karg;
+ int rc;
+ ENTRY;
+
+ mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ /* Doesn't use obd_ioctl_data */
+ if (cmd == OBD_IOC_CHANGELOG_CLEAR) {
+ struct changelog_setinfo *cs = karg;
+ rc = mdd_changelog_user_purge(mdd, cs->cs_id, cs->cs_recno);
+ RETURN(rc);
+ }
+
+ /* Below ioctls use obd_ioctl_data */
+ if (len != sizeof(*data)) {
+ CERROR("Bad ioctl size %d\n", len);
+ RETURN(-EINVAL);
+ }
+ if (data->ioc_version != OBD_IOCTL_VERSION) {
+ CERROR("Bad magic %x != %x\n", data->ioc_version,
+ OBD_IOCTL_VERSION);
+ RETURN(-EINVAL);
+ }
+
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_REG:
+ rc = mdd_changelog_user_register(mdd, &data->ioc_u32_1);
+ break;
+ case OBD_IOC_CHANGELOG_DEREG:
+ rc = mdd_changelog_user_purge(mdd, data->ioc_u32_1,
+ MCUD_UNREGISTER);
+ break;
+ default:
+ rc = -EOPNOTSUPP;
+ }
+
+ RETURN (rc);
+}
+
/* type constructor/destructor: mdd_type_init, mdd_type_fini */
LU_TYPE_INIT_FINI(mdd, &mdd_thread_key, &mdd_ucred_key, &mdd_capainfo_key);
.mdo_maxsize_get = mdd_maxsize_get,
.mdo_init_capa_ctxt = mdd_init_capa_ctxt,
.mdo_update_capa_key= mdd_update_capa_key,
+ .mdo_llog_ctxt_get = mdd_llog_ctxt_get,
+ .mdo_iocontrol = mdd_iocontrol,
#ifdef HAVE_QUOTA_SUPPORT
.mdo_quota = {
.mqo_notify = mdd_quota_notify,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff