mgs header file

diff --git a/lustre/include/linux/lustre_mgs.h b/lustre/include/linux/lustre_mgs.h
index e69de29..23f8ddd 100644 (file)
--- a/lustre/include/linux/lustre_mgs.h
+++ b/lustre/include/linux/lustre_mgs.h
@@ -0,0 +1,130 @@
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ *   This file is part of Lustre, http://www.lustre.org
+ *
+ * MGS data structures.
+ * See also lustre_idl.h for wire formats of requests.
+ */
+
+#ifndef _LUSTRE_MGS_H
+#define _LUSTRE_MGS_H
+
+#ifdef __KERNEL__
+# include <linux/fs.h>
+# include <linux/dcache.h>
+#endif
+#include <linux/lustre_handles.h>
+#include <libcfs/kp30.h>
+#include <linux/lustre_idl.h>
+#include <linux/lustre_lib.h>
+#include <linux/lustre_dlm.h>
+#include <linux/lustre_log.h>
+#include <linux/lustre_export.h>
+
+#define LUSTRE_MGS_NAME "mgs"
+#define LUSTRE_MGT_NAME "mgt"
+#define LUSTRE_MGC_NAME "mgc"
+
+#define MGS_LR_SERVER_SIZE    512
+
+#define MGS_LR_CLIENT_START  8192
+#define MGS_LR_CLIENT_SIZE    128
+
+#define MGS_ROCOMPAT_SUPP       0x00000001
+#define MGS_INCOMPAT_SUPP       (0)
+
+/* Data stored per client in the last_rcvd file.  In le32 order. */
+struct mgs_client_data {
+        __u8 mcd_uuid[40];      /* client UUID */
+        __u64 mcd_last_transno; /* last completed transaction ID */
+        __u64 mcd_last_xid;     /* xid for the last transaction */
+        __u32 mcd_last_result;  /* result from last RPC */
+        __u32 mcd_last_data;    /* per-op data (disposition for open &c.) */
+        __u8 mcd_padding[MGS_LR_CLIENT_SIZE - 64];
+};
+
+/* Data stored per server at the head of the last_rcvd file.  In le32 order.*/
+struct mgs_server_data {
+        __u8  msd_uuid[40];        /* server UUID */
+        __u64 msd_last_transno;    /* last completed transaction ID */
+        __u64 msd_mount_count;     /* MDS incarnation number */
+        __u64 msd_unused;
+        __u32 msd_feature_compat;  /* compatible feature flags */
+        __u32 msd_feature_rocompat;/* read-only compatible feature flags */
+        __u32 msd_feature_incompat;/* incompatible feature flags */
+        __u32 msd_server_size;     /* size of server data area */
+        __u32 msd_client_start;    /* start of per-client data area */
+        __u16 msd_client_size;     /* size of per-client data area */
+        __u16 msd_subdir_count;    /* number of subdirectories for objects */
+        __u64 msd_catalog_oid;     /* recovery catalog object id */
+        __u32 msd_catalog_ogen;    /* recovery catalog inode generation */
+        __u8  msd_peeruuid[40];    /* UUID of LOV/OSC associated with MDS */
+        __u8  msd_padding[MGS_LR_SERVER_SIZE - 140];
+};
+
+typedef enum {
+        MCID = 1,
+        OTID = 2,
+} llogid_t;
+
+struct mgc_op_data {
+        llogid_t   obj_id;
+        __u64      obj_version;
+};
+
+struct ost_info {
+        struct list_head osi_list;
+        char             osi_ostname[40];
+        char             osi_nodename[40];
+        char             osi_ostuuid[40];
+        lnet_nid_t       osi_nid;
+        __u32            osi_nal;
+        __u32            osi_stripe_index;
+};
+
+struct system_db {
+        char              fsname[40];
+        char              mds_name[40];  
+        char              mds_uuid[40];
+        char              mds_nodename[40];
+        lnet_nid_t        mds_nid;
+        struct lov_desc   lovdesc;
+        int               ost_number;
+        struct list_head  ost_infos;
+};
+
+struct llog_verion_desc{
+        struct list_head      lvd_list;
+        __u64                 lvd_version;
+        int                   lvd_ref;
+        struct llog_log_hdr  *lvd_log_hdr;
+};
+
+struct mgc_open_llog {
+        struct list_head   mol_list;
+        __u64              mol_version;
+        llogid_t           mol_id;
+        char               mol_fsname[40];
+};
+
+struct mgs_open_llog {
+        struct list_head     mol_list;
+        char                 mol_fsname[40];
+        struct llog_handle  *mol_cfg_llh;
+        struct dentry       *mol_dentry;
+        __u64                mol_version;
+        spinlock_t           mol_lock;
+        struct system_db    *mol_system_db;
+        struct list_head     mol_vesion_descs;
+};
+
+int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt);
+int mgs_fs_cleanup(struct obd_device *obddev);
+
+extern int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, 
+                         int len, void *karg, void *uarg);
+
+extern struct mgc_open_llog* 
+       mgc_find_open_llog(struct obd_device *obd, char *name);
+#endif