#include "filter_internal.h"
-static struct llog_handle *filter_log_create(struct obd_device *obd);
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static int filter_log_close(struct llog_handle *cathandle,
- struct llog_handle *loghandle)
+int filter_log_sz_change(struct llog_handle *cathandle,
+ struct ll_fid *mds_fid,
+ __u32 io_epoch,
+ struct llog_cookie *logcookie,
+ struct inode *inode)
{
- struct llog_object_hdr *llh = loghandle->lgh_hdr;
- struct file *file = loghandle->lgh_file;
- struct dentry *dparent = NULL, *dchild = NULL;
- struct lustre_handle parent_lockh;
- struct llog_logid *lgl = &loghandle->lgh_cookie.lgc_lgl;
+ struct llog_size_change_rec *lsc;
int rc;
+ struct ost_filterdata *ofd;
ENTRY;
- /* If we are going to delete this log, grab a ref before we close
- * it so we don't have to immediately do another lookup. */
- if (llh->llh_hdr.lth_type != LLOG_CATALOG_MAGIC && llh->llh_count == 0){
- CDEBUG(D_INODE, "deleting log file "LPX64":%x\n",
- lgl->lgl_oid, lgl->lgl_ogen);
- dparent = filter_parent_lock(loghandle->lgh_obd, S_IFREG,
- lgl->lgl_oid,LCK_PW,&parent_lockh);
- if (IS_ERR(dparent)) {
- rc = PTR_ERR(dparent);
- CERROR("error locking parent, orphan log %*s: rc %d\n",
- file->f_dentry->d_name.len,
- file->f_dentry->d_name.name, rc);
- RETURN(rc);
- } else {
- dchild = dget(file->f_dentry);
- llog_delete_log(cathandle, loghandle);
- }
- } else {
- CDEBUG(D_INODE, "closing log file "LPX64":%x\n",
- lgl->lgl_oid, lgl->lgl_ogen);
+ down(&inode->i_sem);
+ ofd = inode->i_filterdata;
+
+ if (ofd && ofd->ofd_epoch >= io_epoch) {
+ if (ofd->ofd_epoch > io_epoch)
+ CERROR("client sent old epoch %d for obj ino %ld\n",
+ io_epoch, inode->i_ino);
+ up(&inode->i_sem);
+ RETURN(0);
}
- rc = filp_close(file, 0);
-
- llog_free_handle(loghandle); /* also removes loghandle from list */
-
- if (dchild != NULL) {
- int err = vfs_unlink(dparent->d_inode, dchild);
- if (err) {
- CERROR("error unlinking empty log %*s: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, err);
- if (!rc)
- rc = err;
- }
- f_dput(dchild);
- ldlm_lock_decref(&parent_lockh, LCK_PW);
+ if (ofd && ofd->ofd_epoch < io_epoch) {
+ ofd->ofd_epoch = io_epoch;
+ } else if (!ofd) {
+ OBD_ALLOC(ofd, sizeof(*ofd));
+ if (!ofd)
+ GOTO(out, rc = -ENOMEM);
+ igrab(inode);
+ inode->i_filterdata = ofd;
+ ofd->ofd_epoch = io_epoch;
}
- RETURN(rc);
-}
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static struct llog_handle *filter_log_open(struct obd_device *obd,
- struct llog_cookie *logcookie)
-{
- struct llog_logid *lgl = &logcookie->lgc_lgl;
- struct llog_handle *loghandle;
- struct dentry *dchild;
- int rc;
- ENTRY;
-
- loghandle = llog_alloc_handle();
- if (!loghandle)
- RETURN(ERR_PTR(-ENOMEM));
-
- dchild = filter_fid2dentry(obd, NULL, S_IFREG, lgl->lgl_oid);
- if (IS_ERR(dchild))
- GOTO(out_handle, rc = PTR_ERR(dchild));
+ /* the decision to write a record is now made, unlock */
+ up(&inode->i_sem);
- if (dchild->d_inode == NULL) {
- CERROR("logcookie references non-existent object %*s\n",
- dchild->d_name.len, dchild->d_name.name);
- GOTO(out_dentry, rc = -ENOENT);
- }
+ OBD_ALLOC(lsc, sizeof(*lsc));
+ if (lsc == NULL)
+ RETURN(-ENOMEM);
+ lsc->lsc_hdr.lrh_len = lsc->lsc_tail.lrt_len = sizeof(*lsc);
+ lsc->lsc_hdr.lrh_type = OST_SZ_REC;
+ lsc->lsc_fid = *mds_fid;
+ lsc->lsc_io_epoch = io_epoch;
- if (dchild->d_inode->i_generation != lgl->lgl_ogen) {
- CERROR("logcookie for %*s had different generation %x != %x\n",
- dchild->d_name.len, dchild->d_name.name,
- dchild->d_inode->i_generation, lgl->lgl_ogen);
- GOTO(out_dentry, rc = -ESTALE);
- }
+ rc = llog_cat_add_rec(cathandle, &lsc->lsc_hdr, logcookie, NULL);
+ OBD_FREE(lsc, sizeof(*lsc));
- /* dentry_open does a dput(dchild) and mntput(mnt) on error */
- mntget(obd->u.filter.fo_vfsmnt);
- loghandle->lgh_file = dentry_open(dchild, obd->u.filter.fo_vfsmnt,
- O_RDWR);
- if (IS_ERR(loghandle->lgh_file)) {
- rc = PTR_ERR(loghandle->lgh_file);
- CERROR("error opening logfile %*s: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, rc);
- GOTO(out_dentry, rc);
+ if (rc > 0) {
+ LASSERT(rc == sizeof(*logcookie));
+ rc = 0;
}
- memcpy(&loghandle->lgh_cookie, logcookie, sizeof(*logcookie));
- loghandle->lgh_log_create = filter_log_create;
- loghandle->lgh_log_open = filter_log_open;
- loghandle->lgh_log_close = filter_log_close;
- loghandle->lgh_obd = obd;
- RETURN(loghandle);
-out_dentry:
- f_dput(dchild);
-out_handle:
- llog_free_handle(loghandle);
- RETURN(ERR_PTR(rc));
+ out:
+ RETURN(rc);
}
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static struct llog_handle *filter_log_create(struct obd_device *obd)
+/* When this (destroy) operation is committed, return the cancel cookie */
+void filter_cancel_cookies_cb(struct obd_device *obd, __u64 transno,
+ void *cb_data, int error)
{
- struct filter_obd *filter = &obd->u.filter;
- struct lustre_handle parent_lockh;
- struct dentry *dparent, *dchild;
- struct llog_handle *loghandle;
- struct file *file;
- int err, rc;
- obd_id id;
- ENTRY;
-
- loghandle = llog_alloc_handle();
- if (!loghandle)
- RETURN(ERR_PTR(-ENOMEM));
-
- retry:
- id = filter_next_id(filter);
-
- dparent = filter_parent_lock(obd, S_IFREG, id, LCK_PW, &parent_lockh);
- if (IS_ERR(dparent))
- GOTO(out_ctxt, rc = PTR_ERR(dparent));
-
- dchild = filter_fid2dentry(obd, dparent, S_IFREG, id);
- if (IS_ERR(dchild))
- GOTO(out_lock, rc = PTR_ERR(dchild));
-
- if (dchild->d_inode != NULL) {
- /* This would only happen if lastobjid was bad on disk */
- CERROR("Serious error: objid %*s already exists; is this "
- "filesystem corrupt? I will try to work around it.\n",
- dchild->d_name.len, dchild->d_name.name);
- f_dput(dchild);
- ldlm_lock_decref(&parent_lockh, LCK_PW);
- goto retry;
- }
-
- rc = vfs_create(dparent->d_inode, dchild, S_IFREG);
- if (rc) {
- CERROR("log create failed rc = %d\n", rc);
- GOTO(out_child, rc);
- }
-
- rc = filter_update_server_data(obd, filter->fo_rcvd_filp,
- filter->fo_fsd);
- if (rc) {
- CERROR("can't write lastobjid but log created: rc %d\n",rc);
- GOTO(out_destroy, rc);
- }
-
- /* dentry_open does a dput(dchild) and mntput(mnt) on error */
- mntget(filter->fo_vfsmnt);
- file = dentry_open(dchild, filter->fo_vfsmnt, O_RDWR | O_LARGEFILE);
- if (IS_ERR(file)) {
- rc = PTR_ERR(file);
- CERROR("error opening log file "LPX64": rc %d\n", id, rc);
- GOTO(out_destroy, rc);
- }
- ldlm_lock_decref(&parent_lockh, LCK_PW);
-
- loghandle->lgh_file = file;
- loghandle->lgh_cookie.lgc_lgl.lgl_oid = id;
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen = dchild->d_inode->i_generation;
- loghandle->lgh_log_create = filter_log_create;
- loghandle->lgh_log_open = filter_log_open;
- loghandle->lgh_log_close = filter_log_close;
- loghandle->lgh_obd = obd;
-
- RETURN(loghandle);
-
-out_destroy:
- err = vfs_unlink(dparent->d_inode, dchild);
- if (err)
- CERROR("error unlinking %*s on error: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, err);
-out_child:
- f_dput(dchild);
-out_lock:
- ldlm_lock_decref(&parent_lockh, LCK_PW);
-out_ctxt:
- llog_free_handle(loghandle);
- RETURN(ERR_PTR(rc));
+ struct llog_cookie *cookie = cb_data;
+ llog_cancel(llog_get_context(obd, cookie->lgc_subsys + 1),
+ NULL, 1, cookie, 0);
+ //NULL, 1, cookie, OBD_LLOG_FL_SENDNOW);
+ OBD_FREE(cb_data, sizeof(struct llog_cookie));
}
-/* This is called from filter_setup() and should be single threaded */
-struct llog_handle *filter_get_catalog(struct obd_device *obd)
+/* Callback for processing the unlink log record received from MDS by
+ * llog_client_api.
+ */
+int filter_recov_log_unlink_cb(struct llog_handle *llh,
+ struct llog_rec_hdr *rec, void *data)
{
- struct filter_obd *filter = &obd->u.filter;
- struct filter_server_data *fsd = filter->fo_fsd;
- struct obd_run_ctxt saved;
- struct llog_handle *cathandle = NULL;
- int rc;
+ struct llog_ctxt *ctxt = llh->lgh_ctxt;
+ struct obd_device *obd = ctxt->loc_obd;
+ struct obd_export *exp = obd->obd_self_export;
+ struct llog_cookie cookie;
+ struct llog_gen_rec *lgr;
+ struct llog_unlink_rec *lur;
+ struct obdo *oa;
+ obd_id oid;
+ int rc = 0;
ENTRY;
-
- push_ctxt(&saved, &filter->fo_ctxt, NULL);
- if (fsd->fsd_catalog_oid) {
- struct llog_cookie catcookie;
-
- catcookie.lgc_lgl.lgl_oid = le64_to_cpu(fsd->fsd_catalog_oid);
- catcookie.lgc_lgl.lgl_ogen = le32_to_cpu(fsd->fsd_catalog_ogen);
- cathandle = filter_log_open(obd, &catcookie);
- if (IS_ERR(cathandle)) {
- CERROR("error opening catalog "LPX64":%x: rc %d\n",
- catcookie.lgc_lgl.lgl_oid,
- catcookie.lgc_lgl.lgl_ogen,
- (int)PTR_ERR(cathandle));
- fsd->fsd_catalog_oid = 0;
- fsd->fsd_catalog_ogen = 0;
- }
+
+ if (!(le32_to_cpu(llh->lgh_hdr->llh_flags) & LLOG_F_IS_PLAIN)) {
+ CERROR("log is not plain\n");
+ RETURN(-EINVAL);
}
-
- if (!fsd->fsd_catalog_oid) {
- struct llog_logid *lgl;
-
- cathandle = filter_log_create(obd);
- if (IS_ERR(cathandle)) {
- CERROR("error creating new catalog: rc %d\n",
- (int)PTR_ERR(cathandle));
- GOTO(out, cathandle);
- }
- lgl = &cathandle->lgh_cookie.lgc_lgl;
- fsd->fsd_catalog_oid = cpu_to_le64(lgl->lgl_oid);
- fsd->fsd_catalog_ogen = cpu_to_le32(lgl->lgl_ogen);
- rc = filter_update_server_data(obd, filter->fo_rcvd_filp, fsd);
- if (rc) {
- CERROR("error writing new catalog to disk: rc %d\n",rc);
- GOTO(out_handle, rc);
- }
+ if (rec->lrh_type != MDS_UNLINK_REC &&
+ rec->lrh_type != LLOG_GEN_REC) {
+ CERROR("log record type error\n");
+ RETURN(-EINVAL);
}
-
- rc = llog_init_catalog(cathandle, &obd->u.filter.fo_mdc_uuid);
- if (rc)
- GOTO(out_handle, rc);
-out:
- pop_ctxt(&saved, &filter->fo_ctxt, NULL);
- RETURN(cathandle);
-
-out_handle:
- filter_log_close(cathandle, cathandle);
- cathandle = ERR_PTR(rc);
- goto out;
-}
-
-void filter_put_catalog(struct llog_handle *cathandle)
-{
- struct llog_handle *loghandle, *n;
- int rc;
- ENTRY;
-
- list_for_each_entry_safe(loghandle, n, &cathandle->lgh_list, lgh_list)
- filter_log_close(cathandle, loghandle);
-
- rc = filp_close(cathandle->lgh_file, 0);
- if (rc)
- CERROR("error closing catalog: rc %d\n", rc);
-
- llog_free_handle(cathandle);
- EXIT;
-}
-
-int filter_log_cancel(struct lustre_handle *conn, struct lov_stripe_md *lsm,
- int num_cookies, struct llog_cookie *logcookies,
- int flags)
-{
- struct obd_device *obd = class_conn2obd(conn);
- struct obd_run_ctxt saved;
- int rc;
- ENTRY;
-
- push_ctxt(&saved, &obd->u.filter.fo_ctxt, NULL);
- rc = llog_cancel_records(obd->u.filter.fo_catalog, num_cookies,
- logcookies);
- pop_ctxt(&saved, &obd->u.filter.fo_ctxt, NULL);
-
- RETURN(rc);
-}
-
-int filter_log_op_create(struct llog_handle *cathandle, struct ll_fid *mds_fid,
- obd_id oid, obd_count ogen,
- struct llog_cookie *logcookie)
-{
- struct llog_create_rec *lcr;
- int rc;
- ENTRY;
-
- OBD_ALLOC(lcr, sizeof(*lcr));
- if (lcr == NULL)
- RETURN(-ENOMEM);
- lcr->lcr_hdr.lth_len = lcr->lcr_end_len = sizeof(*lcr);
- lcr->lcr_hdr.lth_type = OST_CREATE_REC;
- lcr->lcr_fid.id = mds_fid->id;
- lcr->lcr_fid.generation = mds_fid->generation;
- lcr->lcr_fid.f_type = mds_fid->f_type;
- lcr->lcr_oid = oid;
- lcr->lcr_ogen = ogen;
-
- rc = llog_add_record(cathandle, &lcr->lcr_hdr, logcookie);
- OBD_FREE(lcr, sizeof(*lcr));
-
- if (rc > 0) {
- LASSERT(rc == sizeof(*logcookie));
- rc = 0;
+
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_subsys = LLOG_UNLINK_ORIG_CTXT;
+ cookie.lgc_index = le32_to_cpu(rec->lrh_index);
+
+ if (rec->lrh_type == LLOG_GEN_REC) {
+ lgr = (struct llog_gen_rec *)rec;
+ if (llog_gen_lt(lgr->lgr_gen, ctxt->loc_gen))
+ rc = 0;
+ else
+ rc = LLOG_PROC_BREAK;
+ CWARN("fetch generation log, send cookie\n");
+ llog_cancel(ctxt, NULL, 1, &cookie, 0);
+ RETURN(rc);
}
- RETURN(rc);
-}
-
-int filter_log_op_orphan(struct llog_handle *cathandle, obd_id oid,
- obd_count ogen, struct llog_cookie *logcookie)
-{
- struct llog_orphan_rec *lor;
- int rc;
- ENTRY;
- OBD_ALLOC(lor, sizeof(*lor));
- if (lor == NULL)
+ lur = (struct llog_unlink_rec *)rec;
+ oa = obdo_alloc();
+ if (oa == NULL)
RETURN(-ENOMEM);
- lor->lor_hdr.lth_len = lor->lor_end_len = sizeof(*lor);
- lor->lor_hdr.lth_type = OST_ORPHAN_REC;
- lor->lor_oid = oid;
- lor->lor_ogen = ogen;
+ oa->o_valid |= OBD_MD_FLCOOKIE;
+ oa->o_id = lur->lur_oid;
+ oa->o_gr = lur->lur_ogen;
+ memcpy(obdo_logcookie(oa), &cookie, sizeof(cookie));
+ oid = oa->o_id;
+
+ rc = obd_destroy(exp, oa, NULL, NULL);
+ obdo_free(oa);
+ if (rc == -ENOENT) {
+ CWARN("object already removed, send cookie\n");
+ llog_cancel(ctxt, NULL, 1, &cookie, 0);
+ RETURN(0);
+ }
- rc = llog_add_record(cathandle, &lor->lor_hdr, logcookie);
+ if (rc == 0)
+ CWARN("object: "LPU64" in record is destroyed\n", oid);
- if (rc > 0) {
- LASSERT(rc == sizeof(*logcookie));
- rc = 0;
- }
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff