| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.gnu.org/licenses/gpl-2.0.html |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/include/lustre_disk.h |
| * |
| * Lustre disk format definitions. |
| * |
| * Author: Nathan Rutman <nathan@clusterfs.com> |
| */ |
| |
| #ifndef _LUSTRE_DISK_H |
| #define _LUSTRE_DISK_H |
| |
| /** \defgroup disk disk |
| * |
| * @{ |
| */ |
| |
| #include "../../include/linux/libcfs/libcfs.h" |
| #include "../../include/linux/lnet/types.h" |
| #include <linux/backing-dev.h> |
| |
| /****************** persistent mount data *********************/ |
| |
| #define LDD_F_SV_TYPE_MDT 0x0001 |
| #define LDD_F_SV_TYPE_OST 0x0002 |
| #define LDD_F_SV_TYPE_MGS 0x0004 |
| #define LDD_F_SV_TYPE_MASK (LDD_F_SV_TYPE_MDT | \ |
| LDD_F_SV_TYPE_OST | \ |
| LDD_F_SV_TYPE_MGS) |
| #define LDD_F_SV_ALL 0x0008 |
| |
| /****************** mount command *********************/ |
| |
| /* The lmd is only used internally by Lustre; mount simply passes |
| * everything as string options |
| */ |
| |
| #define LMD_MAGIC 0xbdacbd03 |
| #define LMD_PARAMS_MAXLEN 4096 |
| |
| /* gleaned from the mount command - no persistent info here */ |
| struct lustre_mount_data { |
| __u32 lmd_magic; |
| __u32 lmd_flags; /* lustre mount flags */ |
| int lmd_mgs_failnodes; /* mgs failover node count */ |
| int lmd_exclude_count; |
| int lmd_recovery_time_soft; |
| int lmd_recovery_time_hard; |
| char *lmd_dev; /* device name */ |
| char *lmd_profile; /* client only */ |
| char *lmd_mgssec; /* sptlrpc flavor to mgs */ |
| char *lmd_opts; /* lustre mount options (as opposed to |
| * _device_ mount options) |
| */ |
| char *lmd_params; /* lustre params */ |
| __u32 *lmd_exclude; /* array of OSTs to ignore */ |
| char *lmd_mgs; /* MGS nid */ |
| char *lmd_osd_type; /* OSD type */ |
| }; |
| |
| #define LMD_FLG_SERVER 0x0001 /* Mounting a server */ |
| #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */ |
| #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */ |
| #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers, |
| * no other services |
| */ |
| #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, |
| * reusing existing MGS services |
| */ |
| #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */ |
| #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */ |
| #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */ |
| #define LMD_FLG_MGS 0x0200 /* Also start MGS along with server */ |
| #define LMD_FLG_IAM 0x0400 /* IAM dir */ |
| #define LMD_FLG_NO_PRIMNODE 0x0800 /* all nodes are service nodes */ |
| #define LMD_FLG_VIRGIN 0x1000 /* the service registers first time */ |
| #define LMD_FLG_UPDATE 0x2000 /* update parameters */ |
| #define LMD_FLG_HSM 0x4000 /* Start coordinator */ |
| |
| #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT) |
| |
| /****************** last_rcvd file *********************/ |
| |
| /** version recovery epoch */ |
| #define LR_EPOCH_BITS 32 |
| #define lr_epoch(a) ((a) >> LR_EPOCH_BITS) |
| #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */ |
| #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */ |
| |
| /****************** superblock additional info *********************/ |
| |
| struct ll_sb_info; |
| |
| struct lustre_sb_info { |
| int lsi_flags; |
| struct obd_device *lsi_mgc; /* mgc obd */ |
| struct lustre_mount_data *lsi_lmd; /* mount command info */ |
| struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */ |
| struct dt_device *lsi_dt_dev; /* dt device to access disk fs*/ |
| atomic_t lsi_mounts; /* references to the srv_mnt */ |
| char lsi_svname[MTI_NAME_MAXLEN]; |
| char lsi_osd_obdname[64]; |
| char lsi_osd_uuid[64]; |
| struct obd_export *lsi_osd_exp; |
| char lsi_osd_type[16]; |
| char lsi_fstype[16]; |
| struct backing_dev_info lsi_bdi; /* each client mountpoint needs |
| * own backing_dev_info |
| */ |
| }; |
| |
| #define LSI_UMOUNT_FAILOVER 0x00200000 |
| #define LSI_BDI_INITIALIZED 0x00400000 |
| |
| #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info)) |
| #define s2lsi_nocast(sb) ((sb)->s_fs_info) |
| |
| #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile) |
| #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags) |
| #define get_mntdev_name(sb) (s2lsi(sb)->lsi_lmd->lmd_dev) |
| |
| /****************** mount lookup info *********************/ |
| |
| struct lustre_mount_info { |
| char *lmi_name; |
| struct super_block *lmi_sb; |
| struct list_head lmi_list_chain; |
| }; |
| |
| /****************** prototypes *********************/ |
| |
| /* obd_mount.c */ |
| |
| int lustre_start_mgc(struct super_block *sb); |
| void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb, |
| struct vfsmount *mnt)); |
| void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb)); |
| int lustre_common_put_super(struct super_block *sb); |
| |
| int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type); |
| |
| /** @} disk */ |
| |
| #endif /* _LUSTRE_DISK_H */ |