LU-1999 tests: disable recovery-small/106

[fs/lustre-release.git] / lustre / fld / lproc_fld.c

diff --git a/lustre/fld/lproc_fld.c b/lustre/fld/lproc_fld.c
index 09024dd..1604609 100644 (file)
--- a/lustre/fld/lproc_fld.c
+++ b/lustre/fld/lproc_fld.c
@@ -26,6 +26,8 @@
 /*
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -36,6 +38,7 @@
  * FLD (FIDs Location Database)
  *
  * Author: Yury Umanets <umka@clusterfs.com>
+ *     Di Wang <di.wang@whamcloud.com>
  */
 
 #define DEBUG_SUBSYSTEM S_FLD
@@ -54,6 +57,7 @@
 #include <obd_support.h>
 #include <lustre_req_layout.h>
 #include <lustre_fld.h>
+#include <lustre_fid.h>
 #include "fld_internal.h"
 
 #ifdef LPROCFS
@@ -131,7 +135,7 @@ fld_proc_write_hash(struct file *file, const char *buffer,
                 CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n",
                        fld->lcf_name, hash->fh_name);
         }
-       
+
         RETURN(count);
 }
 
@@ -147,10 +151,153 @@ fld_proc_write_cache_flush(struct file *file, const char *buffer,
         fld_cache_flush(fld->lcf_cache);
 
         CDEBUG(D_INFO, "%s: Lookup cache is flushed\n", fld->lcf_name);
-       
+
         RETURN(count);
 }
 
+struct fld_seq_param {
+       struct lu_env  fsp_env;
+       struct dt_it  *fsp_it;
+};
+
+static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
+{
+       struct lu_server_fld    *fld = p->private;
+       struct dt_object        *obj;
+       const struct dt_it_ops  *iops;
+       struct fld_seq_param    *param;
+
+       if (fld->lsf_obj == NULL)
+               return NULL;
+
+       obj = fld->lsf_obj;
+       iops = &obj->do_index_ops->dio_it;
+
+       OBD_ALLOC_PTR(param);
+       if (param == NULL)
+               return ERR_PTR(-ENOMEM);
+
+       lu_env_init(&param->fsp_env, LCT_MD_THREAD);
+       param->fsp_it = iops->init(&param->fsp_env, obj, 0, NULL);
+
+       iops->load(&param->fsp_env, param->fsp_it, *pos);
+
+       return param;
+}
+
+static void fldb_seq_stop(struct seq_file *p, void *v)
+{
+       struct lu_server_fld    *fld = p->private;
+       struct dt_object        *obj;
+       const struct dt_it_ops  *iops;
+       struct fld_seq_param    *param = (struct fld_seq_param *)v;
+
+       if (fld->lsf_obj == NULL)
+               return;
+
+       obj = fld->lsf_obj;
+       iops = &obj->do_index_ops->dio_it;
+       if (IS_ERR(param) || param == NULL)
+               return;
+
+       iops->put(&param->fsp_env, param->fsp_it);
+       iops->fini(&param->fsp_env, param->fsp_it);
+       lu_env_fini(&param->fsp_env);
+       OBD_FREE_PTR(param);
+
+       return;
+}
+
+static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
+{
+       struct lu_server_fld    *fld = p->private;
+       struct dt_object        *obj;
+       const struct dt_it_ops  *iops;
+       struct fld_seq_param    *param = (struct fld_seq_param *)v;
+       int                     rc;
+
+       if (fld->lsf_obj == NULL)
+               return NULL;
+
+       obj = fld->lsf_obj;
+       iops = &obj->do_index_ops->dio_it;
+
+       iops->get(&param->fsp_env, param->fsp_it,
+                 (const struct dt_key *)pos);
+
+       rc = iops->next(&param->fsp_env, param->fsp_it);
+       if (rc > 0) {
+               iops->put(&param->fsp_env, param->fsp_it);
+               iops->fini(&param->fsp_env, param->fsp_it);
+               lu_env_fini(&param->fsp_env);
+               OBD_FREE_PTR(param);
+               return NULL;
+       }
+
+       *pos = *(loff_t *)iops->key(&param->fsp_env, param->fsp_it);
+
+       return param;
+}
+
+static int fldb_seq_show(struct seq_file *p, void *v)
+{
+       struct lu_server_fld    *fld = p->private;
+       struct dt_object        *obj = fld->lsf_obj;
+       struct fld_seq_param    *param = (struct fld_seq_param *)v;
+       const struct dt_it_ops  *iops;
+       struct fld_thread_info  *info;
+       struct lu_seq_range     *fld_rec;
+       int                     rc;
+
+       if (fld->lsf_obj == NULL)
+               return 0;
+
+       obj = fld->lsf_obj;
+       iops = &obj->do_index_ops->dio_it;
+
+       info = lu_context_key_get(&param->fsp_env.le_ctx,
+                                 &fld_thread_key);
+       fld_rec = &info->fti_rec;
+       rc = iops->rec(&param->fsp_env, param->fsp_it,
+                      (struct dt_rec *)fld_rec, 0);
+       if (rc != 0) {
+               CERROR("%s:read record error: rc %d\n",
+                      fld->lsf_name, rc);
+       } else if (fld_rec->lsr_start != 0) {
+               range_be_to_cpu(fld_rec, fld_rec);
+               rc = seq_printf(p, DRANGE"\n", PRANGE(fld_rec));
+       }
+
+       iops->put(&param->fsp_env, param->fsp_it);
+
+       return rc;
+}
+
+struct seq_operations fldb_sops = {
+       .start = fldb_seq_start,
+       .stop = fldb_seq_stop,
+       .next = fldb_seq_next,
+       .show = fldb_seq_show,
+};
+
+static int fldb_seq_open(struct inode *inode, struct file *file)
+{
+       struct proc_dir_entry *dp = PDE(inode);
+       struct seq_file *seq;
+       int rc;
+
+       LPROCFS_ENTRY_AND_CHECK(dp);
+       rc = seq_open(file, &fldb_sops);
+       if (rc) {
+               LPROCFS_EXIT();
+               return rc;
+       }
+
+       seq = file->private_data;
+       seq->private = dp->data;
+       return 0;
+}
+
 struct lprocfs_vars fld_server_proc_list[] = {
        { NULL }};
 
@@ -159,4 +306,13 @@ struct lprocfs_vars fld_client_proc_list[] = {
        { "hash",        fld_proc_read_hash, fld_proc_write_hash, NULL },
        { "cache_flush", NULL, fld_proc_write_cache_flush, NULL },
        { NULL }};
+
+struct file_operations fld_proc_seq_fops = {
+       .owner   = THIS_MODULE,
+       .open    = fldb_seq_open,
+       .read    = seq_read,
+       .llseek  = seq_lseek,
+       .release = lprocfs_seq_release,
+};
+
 #endif