--- /dev/null
+/*
+ * 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.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * 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>
+
+/****************** on-disk files *********************/
+
+#define MDT_LOGS_DIR "LOGS" /* COMPAT_146 */
+#define MOUNT_CONFIGS_DIR "CONFIGS"
+#define CONFIGS_FILE "mountdata"
+/** Persistent mount data are stored on the disk in this file. */
+#define MOUNT_DATA_FILE MOUNT_CONFIGS_DIR"/"CONFIGS_FILE
+#define LAST_RCVD "last_rcvd"
+#define LOV_OBJID "lov_objid"
+#define LOV_OBJSEQ "lov_objseq"
+#define HEALTH_CHECK "health_check"
+#define CAPA_KEYS "capa_keys"
+#define CHANGELOG_USERS "changelog_users"
+#define MGS_NIDTBL_DIR "NIDTBL_VERSIONS"
+#define QMT_DIR "quota_master"
+#define QSD_DIR "quota_slave"
+#define HSM_ACTIONS "hsm_actions"
+
+/****************** 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
+/** need an index assignment */
+#define LDD_F_NEED_INDEX 0x0010
+/** never registered */
+#define LDD_F_VIRGIN 0x0020
+/** update the config logs for this server */
+#define LDD_F_UPDATE 0x0040
+/** rewrite the LDD */
+#define LDD_F_REWRITE_LDD 0x0080
+/** regenerate config logs for this fs or server */
+#define LDD_F_WRITECONF 0x0100
+/** COMPAT_14 */
+#define LDD_F_UPGRADE14 0x0200
+/** process as lctl conf_param */
+#define LDD_F_PARAM 0x0400
+/** all nodes are specified as service nodes */
+#define LDD_F_NO_PRIMNODE 0x1000
+/** IR enable flag */
+#define LDD_F_IR_CAPABLE 0x2000
+/** the MGS refused to register the target. */
+#define LDD_F_ERROR 0x4000
+/** process at lctl conf_param */
+#define LDD_F_PARAM2 0x8000
+
+/* opc for target register */
+#define LDD_F_OPC_REG 0x10000000
+#define LDD_F_OPC_UNREG 0x20000000
+#define LDD_F_OPC_READY 0x40000000
+#define LDD_F_OPC_MASK 0xf0000000
+
+#define LDD_F_ONDISK_MASK (LDD_F_SV_TYPE_MASK)
+
+#define LDD_F_MASK 0xFFFF
+
+enum ldd_mount_type {
+ LDD_MT_EXT3 = 0,
+ LDD_MT_LDISKFS,
+ LDD_MT_SMFS,
+ LDD_MT_REISERFS,
+ LDD_MT_LDISKFS2,
+ LDD_MT_ZFS,
+ LDD_MT_LAST
+};
+
+static inline char *mt_str(enum ldd_mount_type mt)
+{
+ static char *mount_type_string[] = {
+ "ext3",
+ "ldiskfs",
+ "smfs",
+ "reiserfs",
+ "ldiskfs2",
+ "zfs",
+ };
+ return mount_type_string[mt];
+}
+
+static inline char *mt_type(enum ldd_mount_type mt)
+{
+ static char *mount_type_string[] = {
+ "osd-ldiskfs",
+ "osd-ldiskfs",
+ "osd-smfs",
+ "osd-reiserfs",
+ "osd-ldiskfs",
+ "osd-zfs",
+ };
+ return mount_type_string[mt];
+}
+
+#define LDD_INCOMPAT_SUPP 0
+#define LDD_ROCOMPAT_SUPP 0
+
+#define LDD_MAGIC 0x1dd00001
+
+/* On-disk configuration file. In host-endian order. */
+struct lustre_disk_data {
+ __u32 ldd_magic;
+ __u32 ldd_feature_compat; /* compatible feature flags */
+ __u32 ldd_feature_rocompat;/* read-only compatible feature flags */
+ __u32 ldd_feature_incompat;/* incompatible feature flags */
+
+ __u32 ldd_config_ver; /* config rewrite count - not used */
+ __u32 ldd_flags; /* LDD_SV_TYPE */
+ __u32 ldd_svindex; /* server index (0001), must match
+ svname */
+ __u32 ldd_mount_type; /* target fs type LDD_MT_* */
+ char ldd_fsname[64]; /* filesystem this server is part of,
+ MTI_NAME_MAXLEN */
+ char ldd_svname[64]; /* this server's name (lustre-mdt0001)*/
+ __u8 ldd_uuid[40]; /* server UUID (COMPAT_146) */
+
+/*200*/ char ldd_userdata[1024 - 200]; /* arbitrary user string */
+/*1024*/__u8 ldd_padding[4096 - 1024];
+/*4096*/char ldd_mount_opts[4096]; /* target fs mount opts */
+/*8192*/char ldd_params[4096]; /* key=value pairs */
+};
+
+
+#define IS_MDT(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MDT)
+#define IS_OST(data) ((data)->lsi_flags & LDD_F_SV_TYPE_OST)
+#define IS_MGS(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MGS)
+#define IS_SERVER(data) ((data)->lsi_flags & (LDD_F_SV_TYPE_MGS | \
+ LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST))
+#define MT_STR(data) mt_str((data)->ldd_mount_type)
+
+/* Make the mdt/ost server obd name based on the filesystem name */
+static inline int server_make_name(__u32 flags, __u16 index, char *fs,
+ char *name)
+{
+ if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
+ if (!(flags & LDD_F_SV_ALL))
+ sprintf(name, "%.8s%c%s%04x", fs,
+ (flags & LDD_F_VIRGIN) ? ':' :
+ ((flags & LDD_F_WRITECONF) ? '=' : '-'),
+ (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
+ index);
+ } else if (flags & LDD_F_SV_TYPE_MGS) {
+ sprintf(name, "MGS");
+ } else {
+ CERROR("unknown server type %#x\n", flags);
+ return 1;
+ }
+ return 0;
+}
+
+/****************** mount command *********************/
+
+/* The lmd is only used internally by Lustre; mount simply passes
+ everything as string options */
+
+#define LMD_MAGIC 0xbdacbd03
+
+/* 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 */
+
+#define LR_SERVER_SIZE 512
+#define LR_CLIENT_START 8192
+#define LR_CLIENT_SIZE 128
+#if LR_CLIENT_START < LR_SERVER_SIZE
+#error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
+#endif
+
+/*
+ * This limit is arbitrary (131072 clients on x86), but it is convenient to use
+ * 2^n * PAGE_CACHE_SIZE * 8 for the number of bits that fit an order-n allocation.
+ * If we need more than 131072 clients (order-2 allocation on x86) then this
+ * should become an array of single-page pointers that are allocated on demand.
+ */
+#if (128 * 1024UL) > (PAGE_CACHE_SIZE * 8)
+#define LR_MAX_CLIENTS (128 * 1024UL)
+#else
+#define LR_MAX_CLIENTS (PAGE_CACHE_SIZE * 8)
+#endif
+
+/** COMPAT_146: this is an OST (temporary) */
+#define OBD_COMPAT_OST 0x00000002
+/** COMPAT_146: this is an MDT (temporary) */
+#define OBD_COMPAT_MDT 0x00000004
+/** 2.0 server, interop flag to show server version is changed */
+#define OBD_COMPAT_20 0x00000008
+
+/** MDS handles LOV_OBJID file */
+#define OBD_ROCOMPAT_LOVOBJID 0x00000001
+
+/** OST handles group subdirs */
+#define OBD_INCOMPAT_GROUPS 0x00000001
+/** this is an OST */
+#define OBD_INCOMPAT_OST 0x00000002
+/** this is an MDT */
+#define OBD_INCOMPAT_MDT 0x00000004
+/** common last_rvcd format */
+#define OBD_INCOMPAT_COMMON_LR 0x00000008
+/** FID is enabled */
+#define OBD_INCOMPAT_FID 0x00000010
+/** Size-on-MDS is enabled */
+#define OBD_INCOMPAT_SOM 0x00000020
+/** filesystem using iam format to store directory entries */
+#define OBD_INCOMPAT_IAM_DIR 0x00000040
+/** LMA attribute contains per-inode incompatible flags */
+#define OBD_INCOMPAT_LMA 0x00000080
+/** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
+ * bits are now used to store a generation. Once we start changing the layout
+ * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
+ * will be confused by interpreting stripe_count | gen << 16 as the actual
+ * stripe count */
+#define OBD_INCOMPAT_LMM_VER 0x00000100
+/** multiple OI files for MDT */
+#define OBD_INCOMPAT_MULTI_OI 0x00000200
+
+/* Data stored per server at the head of the last_rcvd file. In le32 order.
+ This should be common to filter_internal.h, lustre_mds.h */
+struct lr_server_data {
+ __u8 lsd_uuid[40]; /* server UUID */
+ __u64 lsd_last_transno; /* last completed transaction ID */
+ __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
+ __u64 lsd_mount_count; /* incarnation number */
+ __u32 lsd_feature_compat; /* compatible feature flags */
+ __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
+ __u32 lsd_feature_incompat;/* incompatible feature flags */
+ __u32 lsd_server_size; /* size of server data area */
+ __u32 lsd_client_start; /* start of per-client data area */
+ __u16 lsd_client_size; /* size of per-client data area */
+ __u16 lsd_subdir_count; /* number of subdirectories for objects */
+ __u64 lsd_catalog_oid; /* recovery catalog object id */
+ __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
+ __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
+ __u32 lsd_osd_index; /* index number of OST in LOV */
+ __u32 lsd_padding1; /* was lsd_mdt_index, unused in 2.4.0 */
+ __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
+ /** transaction values since lsd_trans_table_time */
+ __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
+ /** start point of transno table below */
+ __u32 lsd_trans_table_time; /* time of first slot in table above */
+ __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
+ __u8 lsd_padding[LR_SERVER_SIZE - 288];
+};
+
+/* Data stored per client in the last_rcvd file. In le32 order. */
+struct lsd_client_data {
+ __u8 lcd_uuid[40]; /* client UUID */
+ __u64 lcd_last_transno; /* last completed transaction ID */
+ __u64 lcd_last_xid; /* xid for the last transaction */
+ __u32 lcd_last_result; /* result from last RPC */
+ __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
+ /* for MDS_CLOSE requests */
+ __u64 lcd_last_close_transno; /* last completed transaction ID */
+ __u64 lcd_last_close_xid; /* xid for the last transaction */
+ __u32 lcd_last_close_result; /* result from last RPC */
+ __u32 lcd_last_close_data; /* per-op data */
+ /* VBR: last versions */
+ __u64 lcd_pre_versions[4];
+ __u32 lcd_last_epoch;
+ /** orphans handling for delayed export rely on that */
+ __u32 lcd_first_epoch;
+ __u8 lcd_padding[LR_CLIENT_SIZE - 128];
+};
+
+/* bug20354: the lcd_uuid for export of clients may be wrong */
+static inline void check_lcd(char *obd_name, int index,
+ struct lsd_client_data *lcd)
+{
+ int length = sizeof(lcd->lcd_uuid);
+ if (strnlen((char*)lcd->lcd_uuid, length) == length) {
+ lcd->lcd_uuid[length - 1] = '\0';
+
+ LCONSOLE_ERROR("the client UUID (%s) on %s for exports stored in last_rcvd(index = %d) is bad!\n",
+ lcd->lcd_uuid, obd_name, index);
+ }
+}
+
+/* last_rcvd handling */
+static inline void lsd_le_to_cpu(struct lr_server_data *buf,
+ struct lr_server_data *lsd)
+{
+ int i;
+ memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof(lsd->lsd_uuid));
+ lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
+ lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
+ lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
+ lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
+ lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
+ lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
+ lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
+ lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
+ lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
+ lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
+ lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
+ lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
+ memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
+ lsd->lsd_osd_index = le32_to_cpu(buf->lsd_osd_index);
+ lsd->lsd_padding1 = le32_to_cpu(buf->lsd_padding1);
+ lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
+ for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
+ lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
+ lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
+ lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
+}
+
+static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
+ struct lr_server_data *buf)
+{
+ int i;
+ memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof(buf->lsd_uuid));
+ buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
+ buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
+ buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
+ buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
+ buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
+ buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
+ buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
+ buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
+ buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
+ buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
+ buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
+ buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
+ memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
+ buf->lsd_osd_index = cpu_to_le32(lsd->lsd_osd_index);
+ buf->lsd_padding1 = cpu_to_le32(lsd->lsd_padding1);
+ buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
+ for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
+ buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
+ buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
+ buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
+}
+
+static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
+ struct lsd_client_data *lcd)
+{
+ memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
+ lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
+ lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
+ lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
+ lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
+ lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
+ lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
+ lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
+ lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
+ lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
+ lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
+ lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
+ lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
+ lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
+ lcd->lcd_first_epoch = le32_to_cpu(buf->lcd_first_epoch);
+}
+
+static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
+ struct lsd_client_data *buf)
+{
+ memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
+ buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
+ buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
+ buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
+ buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
+ buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
+ buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
+ buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
+ buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
+ buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
+ buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
+ buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
+ buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
+ buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
+ buf->lcd_first_epoch = cpu_to_le32(lcd->lcd_first_epoch);
+}
+
+static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
+{
+ return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
+ lcd->lcd_last_transno : lcd->lcd_last_close_transno);
+}
+
+static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
+{
+ return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
+ lcd->lcd_last_xid : lcd->lcd_last_close_xid);
+}
+
+/****************** 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*/
+ struct vfsmount *lsi_srv_mnt; /* the one server mount */
+ 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 vfsmount *lmi_mnt;
+ struct list_head lmi_list_chain;
+};
+
+/****************** prototypes *********************/
+
+/* obd_mount.c */
+int server_name2fsname(const char *svname, char *fsname, const char **endptr);
+int server_name2index(const char *svname, __u32 *idx, const char **endptr);
+int server_name2svname(const char *label, char *svname, const char **endptr,
+ size_t svsize);
+
+int lustre_put_lsi(struct super_block *sb);
+int lustre_start_simple(char *obdname, char *type, char *uuid,
+ char *s1, char *s2, char *s3, char *s4);
+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 */
Code Review / kvmfornfv.git / blobdiff