-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre Management Server (MGS) filesystem interface code
*
* Author: Nathan Rutman <nathan@clusterfs.com>
+ * Author: Alex Zhuravlev <bzzz@whamcloud.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MGS
-#include <linux/module.h>
-#include <linux/kmod.h>
-#include <linux/version.h>
-#include <linux/sched.h>
-#include <linux/mount.h>
-#include <obd_class.h>
-#include <obd_support.h>
-#include <lustre_disk.h>
-#include <lustre_lib.h>
-#include <lustre_fsfilt.h>
-#include <libcfs/list.h>
+#include <lustre_fid.h>
#include "mgs_internal.h"
+/**
+ * Initialize MGS per-export statistics.
+ *
+ * This function sets up procfs entries for various MGS export counters. These
+ * counters are for per-client statistics tracked on the server.
+ *
+ * \param[in] obd OBD device
+ * \param[in] exp OBD export
+ * \param[in] localdata NID of client
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
- int reconnect, void *localdata)
-
+ void *localdata)
{
- lnet_nid_t *client_nid = localdata;
- int rc, newnid;
- ENTRY;
-
- rc = lprocfs_exp_setup(exp, client_nid, reconnect, &newnid);
- if (rc) {
- /* Mask error for already created
- * /proc entries */
- if (rc == -EALREADY)
- rc = 0;
- RETURN(rc);
- }
- if (newnid) {
- struct nid_stat *tmp = exp->exp_nid_stats;
- int num_stats = 0;
-
- num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
- LPROC_MGS_LAST - 1;
- tmp->nid_stats = lprocfs_alloc_stats(num_stats,
- LPROCFS_STATS_FLAG_NOPERCPU);
- if (tmp->nid_stats == NULL)
- return -ENOMEM;
- lprocfs_init_ops_stats(LPROC_MGS_LAST, tmp->nid_stats);
- mgs_stats_counter_init(tmp->nid_stats);
- rc = lprocfs_register_stats(tmp->nid_proc, "stats",
- tmp->nid_stats);
- if (rc)
- GOTO(clean, rc);
-
- rc = lprocfs_nid_ldlm_stats_init(tmp);
- if (rc)
- GOTO(clean, rc);
- }
- RETURN(0);
-clean:
- return rc;
+ lnet_nid_t *client_nid = localdata;
+ struct nid_stat *stats;
+ int rc;
+ ENTRY;
+
+ rc = lprocfs_exp_setup(exp, client_nid);
+ if (rc != 0)
+ /* Mask error for already created /proc entries */
+ RETURN(rc == -EALREADY ? 0 : rc);
+
+ stats = exp->exp_nid_stats;
+ stats->nid_stats = lprocfs_alloc_stats(NUM_OBD_STATS + LPROC_MGS_LAST,
+ LPROCFS_STATS_FLAG_NOPERCPU);
+ if (stats->nid_stats == NULL)
+ RETURN(-ENOMEM);
+
+ lprocfs_init_ops_stats(LPROC_MGS_LAST, stats->nid_stats);
+
+ mgs_stats_counter_init(stats->nid_stats);
+
+ rc = lprocfs_register_stats(stats->nid_proc, "stats", stats->nid_stats);
+ if (rc != 0) {
+ lprocfs_free_stats(&stats->nid_stats);
+ GOTO(out, rc);
+ }
+
+ rc = lprocfs_nid_ldlm_stats_init(stats);
+ if (rc != 0)
+ GOTO(out, rc);
+
+out:
+ RETURN(rc);
}
/**
* crash all connections are treated as new connections.
*/
int mgs_client_add(struct obd_device *obd, struct obd_export *exp,
- void *localdata)
+ void *localdata)
{
return 0;
}
return 0;
}
-/* Same as mds_lvfs_fid2dentry */
-/* Look up an entry by inode number. */
-/* this function ONLY returns valid dget'd dentries with an initialized inode
- or errors */
-static struct dentry *mgs_lvfs_fid2dentry(__u64 id, __u32 gen,
- __u64 gr, void *data)
+int mgs_fs_setup(const struct lu_env *env, struct mgs_device *mgs)
{
- struct fsfilt_fid fid;
- struct obd_device *obd = (struct obd_device *)data;
- ENTRY;
-
- CDEBUG(D_DENTRY, "--> mgs_fid2dentry: ino/gen %lu/%u, sb %p\n",
- (unsigned long)id, gen, obd->u.mgs.mgs_sb);
-
- if (id == 0)
- RETURN(ERR_PTR(-ESTALE));
-
- fid.ino = id;
- fid.gen = gen;
-
- RETURN(fsfilt_fid2dentry(obd, obd->u.mgs.mgs_vfsmnt, &fid, 0));
-}
-
-struct lvfs_callback_ops mgs_lvfs_ops = {
- l_fid2dentry: mgs_lvfs_fid2dentry,
-};
-
-int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
-{
- struct mgs_obd *mgs = &obd->u.mgs;
- struct lvfs_run_ctxt saved;
- struct dentry *dentry;
- int rc;
- ENTRY;
-
- /* FIXME what's this? Do I need it? */
- rc = cfs_cleanup_group_info();
- if (rc)
- RETURN(rc);
-
- mgs->mgs_vfsmnt = mnt;
- mgs->mgs_sb = mnt->mnt_root->d_inode->i_sb;
-
- fsfilt_setup(obd, mgs->mgs_sb);
-
- OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
- obd->obd_lvfs_ctxt.pwdmnt = mnt;
- obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
- obd->obd_lvfs_ctxt.fs = get_ds();
- obd->obd_lvfs_ctxt.cb_ops = mgs_lvfs_ops;
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-
- /* Setup the configs dir */
- dentry = simple_mkdir(cfs_fs_pwd(current->fs), mnt, MOUNT_CONFIGS_DIR, 0777, 1);
- if (IS_ERR(dentry)) {
- rc = PTR_ERR(dentry);
- CERROR("cannot create %s directory: rc = %d\n",
- MOUNT_CONFIGS_DIR, rc);
- GOTO(err_pop, rc);
- }
- mgs->mgs_configs_dir = dentry;
-
-err_pop:
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- return rc;
+ struct lu_fid fid;
+ struct dt_object *o;
+ struct lu_fid rfid;
+ struct dt_object *root;
+ int rc;
+
+ ENTRY;
+
+ OBD_SET_CTXT_MAGIC(&mgs->mgs_obd->obd_lvfs_ctxt);
+ mgs->mgs_obd->obd_lvfs_ctxt.dt = mgs->mgs_bottom;
+
+ /* XXX: fix when support for N:1 layering is implemented */
+ LASSERT(mgs->mgs_dt_dev.dd_lu_dev.ld_site);
+ mgs->mgs_dt_dev.dd_lu_dev.ld_site->ls_top_dev =
+ &mgs->mgs_dt_dev.dd_lu_dev;
+
+ /* Setup the configs dir */
+ fid.f_seq = FID_SEQ_LOCAL_NAME;
+ fid.f_oid = 1;
+ fid.f_ver = 0;
+ rc = local_oid_storage_init(env, mgs->mgs_bottom, &fid, &mgs->mgs_los);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = dt_root_get(env, mgs->mgs_bottom, &rfid);
+ if (rc)
+ GOTO(out_los, rc);
+
+ root = dt_locate_at(env, mgs->mgs_bottom, &rfid,
+ &mgs->mgs_dt_dev.dd_lu_dev, NULL);
+ if (unlikely(IS_ERR(root)))
+ GOTO(out_los, rc = PTR_ERR(root));
+
+ o = local_file_find_or_create(env, mgs->mgs_los, root,
+ MOUNT_CONFIGS_DIR,
+ S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
+ if (IS_ERR(o))
+ GOTO(out_root, rc = PTR_ERR(o));
+
+ if (!dt_try_as_dir(env, o)) {
+ lu_object_put(env, &o->do_lu);
+ GOTO(out_root, rc = -ENOTDIR);
+ }
+
+ mgs->mgs_configs_dir = o;
+
+ /* create directory to store nid table versions */
+ o = local_file_find_or_create(env, mgs->mgs_los, root, MGS_NIDTBL_DIR,
+ S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO);
+ if (IS_ERR(o)) {
+ lu_object_put(env, &mgs->mgs_configs_dir->do_lu);
+ mgs->mgs_configs_dir = NULL;
+ GOTO(out_root, rc = PTR_ERR(o));
+ }
+
+ mgs->mgs_nidtbl_dir = o;
+
+out_root:
+ lu_object_put(env, &root->do_lu);
+out_los:
+ if (rc) {
+ local_oid_storage_fini(env, mgs->mgs_los);
+ mgs->mgs_los = NULL;
+ }
+out:
+ mgs->mgs_dt_dev.dd_lu_dev.ld_site->ls_top_dev = NULL;
+
+ return rc;
}
-int mgs_fs_cleanup(struct obd_device *obd)
+int mgs_fs_cleanup(const struct lu_env *env, struct mgs_device *mgs)
{
- struct mgs_obd *mgs = &obd->u.mgs;
- struct lvfs_run_ctxt saved;
- int rc = 0;
-
- class_disconnect_exports(obd); /* cleans up client info too */
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-
- if (mgs->mgs_configs_dir) {
- l_dput(mgs->mgs_configs_dir);
- mgs->mgs_configs_dir = NULL;
- }
-
- shrink_dcache_sb(mgs->mgs_sb);
-
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-
- return rc;
+ class_disconnect_exports(mgs->mgs_obd); /* cleans up client info too */
+
+ if (mgs->mgs_configs_dir) {
+ lu_object_put(env, &mgs->mgs_configs_dir->do_lu);
+ mgs->mgs_configs_dir = NULL;
+ }
+ if (mgs->mgs_nidtbl_dir) {
+ lu_object_put(env, &mgs->mgs_nidtbl_dir->do_lu);
+ mgs->mgs_nidtbl_dir = NULL;
+ }
+ if (mgs->mgs_los) {
+ local_oid_storage_fini(env, mgs->mgs_los);
+ mgs->mgs_los = NULL;
+ }
+
+ return 0;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff