-/* -*- 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, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <lustre_log.h>
#include <lustre_export.h>
-/* mgs_llog.c */
-int class_dentry_readdir(struct obd_device *obd, struct dentry *dir,
- struct vfsmount *inmnt,
- cfs_list_t *dentry_list);
-
#define MGSSELF_NAME "_mgs"
+#define MGS_SERVICE_WATCHDOG_FACTOR 2
+
+/* -- imperative recovery control data structures -- */
+/**
+ * restarting targets.
+ */
+struct mgs_nidtbl;
+struct mgs_nidtbl_target {
+ cfs_list_t mnt_list;
+ struct mgs_nidtbl *mnt_fs;
+ u64 mnt_version;
+ int mnt_type; /* OST or MDT */
+ cfs_time_t mnt_last_active;
+ struct mgs_target_info mnt_mti;
+};
+
+enum {
+ IR_FULL = 0,
+ IR_STARTUP,
+ IR_DISABLED,
+ IR_PARTIAL
+};
+
+#define IR_STRINGS { "full", "startup", "disabled", "partial" }
+
+/**
+ */
+struct fs_db;
+
+/**
+ * maintain fs client nodes of mgs.
+ */
+struct mgs_fsc {
+ struct fs_db *mfc_fsdb;
+ /**
+ * Where the fs client comes from.
+ */
+ struct obd_export *mfc_export;
+ /**
+ * list of fs clients from the same export,
+ * protected by mgs_export_data->med_lock
+ */
+ cfs_list_t mfc_export_list;
+ /**
+ * list of fs clients in the same fsdb, protected by fsdb->fsdb_mutex
+ */
+ cfs_list_t mfc_fsdb_list;
+ unsigned mfc_ir_capable:1;
+};
+
+struct mgs_nidtbl {
+ struct fs_db *mn_fsdb;
+ struct file *mn_version_file;
+ cfs_mutex_t mn_lock;
+ u64 mn_version;
+ int mn_nr_targets;
+ cfs_list_t mn_targets;
+};
+
struct mgs_tgt_srpc_conf {
struct mgs_tgt_srpc_conf *mtsc_next;
char *mtsc_tgt;
#define FSDB_OSCNAME18 (4) /* old 1.8 style OSC naming */
#define FSDB_UDESC (5) /* sptlrpc user desc, will be obsolete */
-
struct fs_db {
char fsdb_name[9];
cfs_list_t fsdb_list; /* list of databases */
- cfs_semaphore_t fsdb_sem;
+ cfs_mutex_t fsdb_mutex;
void *fsdb_ost_index_map; /* bitmap of used indicies */
void *fsdb_mdt_index_map; /* bitmap of used indicies */
int fsdb_mdt_count;
unsigned long fsdb_flags;
__u32 fsdb_gen;
- /* in-memory copy of the srpc rules, guarded by fsdb_sem */
+ /* in-memory copy of the srpc rules, guarded by fsdb_lock */
struct sptlrpc_rule_set fsdb_srpc_gen;
struct mgs_tgt_srpc_conf *fsdb_srpc_tgt;
+
+ /* list of fs clients, mgs_fsc. protected by mgs_mutex */
+ cfs_list_t fsdb_clients;
+ int fsdb_nonir_clients;
+ int fsdb_ir_state;
+
+ /* Target NIDs Table */
+ struct mgs_nidtbl fsdb_nidtbl;
+
+ /* async thread to notify clients */
+ struct obd_device *fsdb_obd;
+ cfs_waitq_t fsdb_notify_waitq;
+ cfs_completion_t fsdb_notify_comp;
+ cfs_time_t fsdb_notify_start;
+ cfs_atomic_t fsdb_notify_phase;
+ volatile int fsdb_notify_async:1,
+ fsdb_notify_stop:1;
+ /* statistic data */
+ unsigned int fsdb_notify_total;
+ unsigned int fsdb_notify_max;
+ unsigned int fsdb_notify_count;
};
+/* mgs_llog.c */
+int class_dentry_readdir(struct obd_device *obd, struct dentry *dir,
+ struct vfsmount *inmnt,
+ cfs_list_t *dentry_list);
+
int mgs_init_fsdb_list(struct obd_device *obd);
int mgs_cleanup_fsdb_list(struct obd_device *obd);
-int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
+int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
struct fs_db **dbh);
+struct fs_db *mgs_find_fsdb(struct obd_device *obd, char *fsname);
int mgs_get_fsdb_srpc_from_llog(struct obd_device *obd, struct fs_db *fsdb);
int mgs_check_index(struct obd_device *obd, struct mgs_target_info *mti);
int mgs_check_failnid(struct obd_device *obd, struct mgs_target_info *mti);
char *poolname, char *fsname, char *ostname);
/* mgs_handler.c */
-void mgs_revoke_lock(struct obd_device *obd, struct fs_db *fsdb);
+int mgs_get_lock(struct obd_device *obd, struct ldlm_res_id *res,
+ struct lustre_handle *lockh);
+int mgs_put_lock(struct lustre_handle *lockh);
+void mgs_revoke_lock(struct obd_device *obd, struct fs_db *fsdb, int type);
+
+/* mgs_nids.c */
+int mgs_ir_update(struct obd_device *obd, struct mgs_target_info *mti);
+int mgs_ir_init_fs(struct obd_device *obd, struct fs_db *fsdb);
+void mgs_ir_fini_fs(struct obd_device *obd, struct fs_db *fsdb);
+void mgs_ir_notify_complete(struct fs_db *fsdb);
+int mgs_get_ir_logs(struct ptlrpc_request *req);
+int lprocfs_wr_ir_state(struct file *file, const char *buffer,
+ unsigned long count, void *data);
+int lprocfs_rd_ir_state(struct seq_file *seq, void *data);
+int lprocfs_wr_ir_timeout(struct file *file, const char *buffer,
+ unsigned long count, void *data);
+int lprocfs_rd_ir_timeout(char *page, char **start, off_t off, int count,
+ int *eof, void *data);
+void mgs_fsc_cleanup(struct obd_export *exp);
+void mgs_fsc_cleanup_by_fsdb(struct fs_db *fsdb);
+int mgs_fsc_attach(struct obd_export *exp, char *fsname);
/* mgs_fs.c */
int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
- int reconnect, void *localdata);
+ void *localdata);
int mgs_client_free(struct obd_export *exp);
int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt);
int mgs_fs_cleanup(struct obd_device *obddev);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff