Whamcloud - gitweb
LU-3106 ofd: create additional symlinks to osd
[fs/lustre-release.git] / lustre / ofd / ofd_dev.c
index a637f03..4c2fec3 100644 (file)
@@ -27,7 +27,7 @@
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -44,6 +44,7 @@
 
 #include <obd_class.h>
 #include <lustre_param.h>
+#include <lustre_fid.h>
 
 #include "ofd_internal.h"
 
@@ -179,6 +180,12 @@ static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
        EXIT;
 }
 
+/* For interoperability, see mdt_interop_param[]. */
+static struct cfg_interop_param ofd_interop_param[] = {
+       { "ost.quota_type",     NULL },
+       { NULL }
+};
+
 /* used by MGS to process specific configurations */
 static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
                              struct lustre_cfg *cfg)
@@ -194,6 +201,38 @@ static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
        case LCFG_PARAM: {
                struct lprocfs_static_vars lvars;
 
+               /* For interoperability */
+               struct cfg_interop_param   *ptr = NULL;
+               struct lustre_cfg          *old_cfg = NULL;
+               char                       *param = NULL;
+
+               param = lustre_cfg_string(cfg, 1);
+               if (param == NULL) {
+                       CERROR("param is empty\n");
+                       rc = -EINVAL;
+                       break;
+               }
+
+               ptr = class_find_old_param(param, ofd_interop_param);
+               if (ptr != NULL) {
+                       if (ptr->new_param == NULL) {
+                               rc = 0;
+                               CWARN("For interoperability, skip this %s."
+                                     " It is obsolete.\n", ptr->old_param);
+                               break;
+                       }
+
+                       CWARN("Found old param %s, changed it to %s.\n",
+                             ptr->old_param, ptr->new_param);
+
+                       old_cfg = cfg;
+                       cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
+                       if (IS_ERR(cfg)) {
+                               rc = PTR_ERR(cfg);
+                               break;
+                       }
+               }
+
                lprocfs_ofd_init_vars(&lvars);
                rc = class_process_proc_param(PARAM_OST, lvars.obd_vars, cfg,
                                              d->ld_obd);
@@ -293,17 +332,39 @@ static struct lu_object *ofd_object_alloc(const struct lu_env *env,
 
 extern int ost_handle(struct ptlrpc_request *req);
 
-static int ofd_start(const struct lu_env *env, struct lu_device *dev)
+static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
+                      struct lu_device *dev)
 {
+       struct ofd_thread_info *info;
        struct ofd_device       *ofd = ofd_dev(dev);
+       struct obd_device       *obd = ofd_obd(ofd);
        struct lu_device        *next = &ofd->ofd_osd->dd_lu_dev;
        int                      rc;
 
        ENTRY;
 
+       rc = lu_env_refill((struct lu_env *)env);
+       if (rc != 0) {
+               CERROR("Failure to refill session: '%d'\n", rc);
+               RETURN(rc);
+       }
+
+       info = ofd_info_init(env, NULL);
+       if (info == NULL)
+               RETURN(-EFAULT);
+
        /* initialize lower device */
        rc = next->ld_ops->ldo_prepare(env, dev, next);
 
+       target_recovery_init(&ofd->ofd_lut, ost_handle);
+       LASSERT(obd->obd_no_conn);
+       spin_lock(&obd->obd_dev_lock);
+       obd->obd_no_conn = 0;
+       spin_unlock(&obd->obd_dev_lock);
+
+       if (obd->obd_recovering == 0)
+               ofd_postrecov(env, ofd);
+
        RETURN(rc);
 }
 
@@ -322,7 +383,8 @@ static int ofd_recovery_complete(const struct lu_env *env,
         * precreate request size (see ofd_grant_create()
         */
        ofd_grant_connect(env, dev->ld_obd->obd_self_export,
-                         OST_MAX_PRECREATE * ofd->ofd_dt_conf.ddp_inodespace);
+                         OST_MAX_PRECREATE * ofd->ofd_dt_conf.ddp_inodespace,
+                         false);
        rc = next->ld_ops->ldo_recovery_complete(env, next);
        RETURN(rc);
 }
@@ -331,6 +393,7 @@ static struct lu_device_operations ofd_lu_ops = {
        .ldo_object_alloc       = ofd_object_alloc,
        .ldo_process_config     = ofd_process_config,
        .ldo_recovery_complete  = ofd_recovery_complete,
+       .ldo_prepare            = ofd_prepare,
 };
 
 static int ofd_procfs_init(struct ofd_device *ofd)
@@ -365,18 +428,12 @@ static int ofd_procfs_init(struct ofd_device *ofd)
        lprocfs_counter_init(obd->obd_stats, LPROC_OFD_WRITE_BYTES,
                             LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
 
-       rc = lproc_ofd_attach_seqstat(obd);
-       if (rc) {
-               CERROR("%s: create seqstat failed: %d.\n", obd->obd_name, rc);
-               GOTO(free_obd_stats, rc);
-       }
-
        entry = lprocfs_register("exports", obd->obd_proc_entry, NULL, NULL);
        if (IS_ERR(entry)) {
                rc = PTR_ERR(entry);
                CERROR("%s: error %d setting up lprocfs for %s\n",
                       obd->obd_name, rc, "exports");
-               GOTO(free_obd_stats, rc);
+               GOTO(obd_cleanup, rc);
        }
        obd->obd_proc_exports_entry = entry;
 
@@ -387,7 +444,7 @@ static int ofd_procfs_init(struct ofd_device *ofd)
                rc = PTR_ERR(entry);
                CERROR("%s: add proc entry 'clear' failed: %d.\n",
                       obd->obd_name, rc);
-               GOTO(free_obd_stats, rc);
+               GOTO(obd_cleanup, rc);
        }
 
        rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
@@ -397,27 +454,142 @@ static int ofd_procfs_init(struct ofd_device *ofd)
        RETURN(0);
 remove_entry_clear:
        lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
-free_obd_stats:
-       lprocfs_free_obd_stats(obd);
 obd_cleanup:
        lprocfs_obd_cleanup(obd);
+       lprocfs_free_obd_stats(obd);
+
        return rc;
 }
 
-static int ofd_procfs_fini(struct ofd_device *ofd)
+static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
+{
+       struct obd_device       *obd = ofd_obd(ofd);
+       struct obd_device       *osd_obd = ofd->ofd_osd_exp->exp_obd;
+       cfs_proc_dir_entry_t    *osd_root = osd_obd->obd_type->typ_procroot;
+       cfs_proc_dir_entry_t    *osd_dir;
+
+       osd_dir = lprocfs_srch(osd_root, obd->obd_name);
+       if (osd_dir == NULL)
+               return;
+
+       if (lprocfs_srch(osd_dir, "brw_stats") != NULL)
+               lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
+                                   "../../%s/%s/brw_stats",
+                                   osd_root->name, osd_dir->name);
+
+       if (lprocfs_srch(osd_dir, "read_cache_enable") != NULL)
+               lprocfs_add_symlink("read_cache_enable", obd->obd_proc_entry,
+                                   "../../%s/%s/read_cache_enable",
+                                   osd_root->name, osd_dir->name);
+
+       if (lprocfs_srch(osd_dir, "readcache_max_filesize") != NULL)
+               lprocfs_add_symlink("readcache_max_filesize",
+                                   obd->obd_proc_entry,
+                                   "../../%s/%s/readcache_max_filesize",
+                                   osd_root->name, osd_dir->name);
+
+       if (lprocfs_srch(osd_dir, "writethrough_cache_enable") != NULL)
+               lprocfs_add_symlink("writethrough_cache_enable",
+                                   obd->obd_proc_entry,
+                                   "../../%s/%s/writethrough_cache_enable",
+                                   osd_root->name, osd_dir->name);
+}
+
+static void ofd_procfs_fini(struct ofd_device *ofd)
 {
        struct obd_device *obd = ofd_obd(ofd);
 
-       lprocfs_job_stats_fini(obd);
+       lprocfs_remove_proc_entry("writethrough_cache_enable",
+                                 obd->obd_proc_entry);
+       lprocfs_remove_proc_entry("readcache_max_filesize",
+                                 obd->obd_proc_entry);
+       lprocfs_remove_proc_entry("read_cache_enable", obd->obd_proc_entry);
+       lprocfs_remove_proc_entry("brw_stats", obd->obd_proc_entry);
        lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
        lprocfs_free_per_client_stats(obd);
-       lprocfs_free_obd_stats(obd);
        lprocfs_obd_cleanup(obd);
-       return 0;
+       lprocfs_free_obd_stats(obd);
+       lprocfs_job_stats_fini(obd);
 }
 
 extern int ost_handle(struct ptlrpc_request *req);
 
+int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
+{
+       return seq_site_fini(env, &ofd->ofd_seq_site);
+}
+
+int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
+{
+       struct seq_server_site  *ss = &ofd->ofd_seq_site;
+       struct lu_device        *lu = &ofd->ofd_dt_dev.dd_lu_dev;
+       char                    *obd_name = ofd_name(ofd);
+       char                    *name = NULL;
+       int                     rc = 0;
+
+       ss = &ofd->ofd_seq_site;
+       lu->ld_site->ld_seq_site = ss;
+       ss->ss_lu = lu->ld_site;
+       ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
+
+       OBD_ALLOC_PTR(ss->ss_server_seq);
+       if (ss->ss_server_seq == NULL)
+               GOTO(out_free, rc = -ENOMEM);
+
+       OBD_ALLOC(name, strlen(obd_name) + 10);
+       if (!name) {
+               OBD_FREE_PTR(ss->ss_server_seq);
+               ss->ss_server_seq = NULL;
+               GOTO(out_free, rc = -ENOMEM);
+       }
+
+       rc = seq_server_init(ss->ss_server_seq, ofd->ofd_osd, obd_name,
+                            LUSTRE_SEQ_SERVER, ss, env);
+       if (rc) {
+               CERROR("%s : seq server init error %d\n", obd_name, rc);
+               GOTO(out_free, rc);
+       }
+       ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
+
+       OBD_ALLOC_PTR(ss->ss_client_seq);
+       if (ss->ss_client_seq == NULL)
+               GOTO(out_free, -ENOMEM);
+
+       snprintf(name, strlen(obd_name) + 6, "%p-super", obd_name);
+       rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
+                            name, NULL);
+       if (rc) {
+               CERROR("%s : seq client init error %d\n", obd_name, rc);
+               GOTO(out_free, rc);
+       }
+       OBD_FREE(name, strlen(obd_name) + 10);
+       name = NULL;
+
+       rc = seq_server_set_cli(ss->ss_server_seq, ss->ss_client_seq, env);
+
+out_free:
+       if (rc) {
+               if (ss->ss_server_seq) {
+                       seq_server_fini(ss->ss_server_seq, env);
+                       OBD_FREE_PTR(ss->ss_server_seq);
+                       ss->ss_server_seq = NULL;
+               }
+
+               if (ss->ss_client_seq) {
+                       seq_client_fini(ss->ss_client_seq);
+                       OBD_FREE_PTR(ss->ss_client_seq);
+                       ss->ss_client_seq = NULL;
+               }
+
+               if (name) {
+                       OBD_FREE(name, strlen(obd_name) + 10);
+                       name = NULL;
+               }
+       }
+
+       return rc;
+}
+
 static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
                     struct lu_device_type *ldt, struct lustre_cfg *cfg)
 {
@@ -444,27 +616,28 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        m->ofd_fmd_max_num = OFD_FMD_MAX_NUM_DEFAULT;
        m->ofd_fmd_max_age = OFD_FMD_MAX_AGE_DEFAULT;
 
-       cfs_spin_lock_init(&m->ofd_flags_lock);
+       spin_lock_init(&m->ofd_flags_lock);
        m->ofd_raid_degraded = 0;
        m->ofd_syncjournal = 0;
        ofd_slc_set(m);
        m->ofd_grant_compat_disable = 0;
 
        /* statfs data */
-       cfs_spin_lock_init(&m->ofd_osfs_lock);
+       spin_lock_init(&m->ofd_osfs_lock);
        m->ofd_osfs_age = cfs_time_shift_64(-1000);
        m->ofd_osfs_unstable = 0;
        m->ofd_statfs_inflight = 0;
        m->ofd_osfs_inflight = 0;
 
        /* grant data */
-       cfs_spin_lock_init(&m->ofd_grant_lock);
+       spin_lock_init(&m->ofd_grant_lock);
        m->ofd_tot_dirty = 0;
        m->ofd_tot_granted = 0;
        m->ofd_tot_pending = 0;
-       m->ofd_max_group = 0;
+       m->ofd_seq_count = 0;
 
-       cfs_rwlock_init(&obd->u.filter.fo_sptlrpc_lock);
+       spin_lock_init(&m->ofd_batch_lock);
+       rwlock_init(&obd->u.filter.fo_sptlrpc_lock);
        sptlrpc_rule_set_init(&obd->u.filter.fo_sptlrpc_rset);
 
        obd->u.filter.fo_fl_oss_capa = 0;
@@ -485,7 +658,9 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        }
 
        /* No connection accepted until configurations will finish */
+       spin_lock(&obd->obd_dev_lock);
        obd->obd_no_conn = 1;
+       spin_unlock(&obd->obd_dev_lock);
        obd->obd_replayable = 1;
        if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
                char *str = lustre_cfg_string(cfg, 4);
@@ -506,6 +681,8 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
                GOTO(err_fini_proc, rc);
        }
 
+       ofd_procfs_add_brw_stats_symlink(m);
+
        /* populate cached statfs data */
        osfs = &ofd_info(env)->fti_u.osfs;
        rc = ofd_statfs_internal(env, m, osfs, 0, NULL);
@@ -518,9 +695,14 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
                                obd->obd_name, osfs->os_bsize);
                GOTO(err_fini_stack, rc = -EPROTO);
        }
-       m->ofd_blockbits = cfs_fls(osfs->os_bsize) - 1;
+       m->ofd_blockbits = fls(osfs->os_bsize) - 1;
+
+       m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
+       if (osfs->os_bsize * osfs->os_blocks < OFD_PRECREATE_SMALL_FS)
+               m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
 
-       snprintf(info->fti_u.name, sizeof(info->fti_u.name), "filter-%p", m);
+       snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
+                "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
        m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
                                              LDLM_NAMESPACE_SERVER,
                                              LDLM_NAMESPACE_GREEDY,
@@ -546,11 +728,7 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        m->ofd_grant_ratio =
                ofd_grant_ratio_conv(m->ofd_dt_conf.ddp_grant_reserved);
 
-       rc = ofd_start(env, &m->ofd_dt_dev.dd_lu_dev);
-       if (rc)
-               GOTO(err_fini_stack, rc);
-
-       rc = lut_init(env, &m->ofd_lut, obd, m->ofd_osd);
+       rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd);
        if (rc)
                GOTO(err_free_ns, rc);
 
@@ -558,11 +736,9 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        if (rc)
                GOTO(err_fini_lut, rc);
 
-       target_recovery_init(&m->ofd_lut, ost_handle);
-
        RETURN(0);
 err_fini_lut:
-       lut_fini(env, &m->ofd_lut);
+       tgt_fini(env, &m->ofd_lut);
 err_free_ns:
        ldlm_namespace_free(m->ofd_namespace, 0, obd->obd_force);
        obd->obd_namespace = m->ofd_namespace = NULL;
@@ -582,7 +758,7 @@ static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
        obd_exports_barrier(obd);
        obd_zombie_barrier();
 
-       lut_fini(env, &m->ofd_lut);
+       tgt_fini(env, &m->ofd_lut);
        ofd_fs_cleanup(env, m);
 
        ofd_free_capa_keys(m);