/* * 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, 2017, 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 */ #ifndef _LUSTRE_DISK_H #define _LUSTRE_DISK_H /** \defgroup disk disk * * @{ */ #include #include #include #include #include #include #include #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) /****************** 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_fileset; /* mount fileset */ 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 */ char *lmd_nidnet; /* network to restrict this client to */ }; #define LMD_FLG_SERVER 0x0001 /* Mounting a server */ #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */ #define LMD_FLG_SKIP_LFSCK 0x0004 /* NOT auto resume LFSCK when mount */ #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_FLG_DEV_RDONLY 0x8000 /* discard modification quitely */ #define LMD_FLG_NO_PRECREATE 0x10000 /* do not allow OST object creation */ #define LMD_FLG_LOCAL_RECOV 0x20000 /* force recovery for local clients */ #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT) /****************** superblock additional info *********************/ struct ll_sb_info; struct kobject; 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 */ struct kobject *lsi_kobj; char lsi_svname[MTI_NAME_MAXLEN]; /* lsi_osd_obdname format = 'lsi->ls_svname'-osd */ char lsi_osd_obdname[MTI_NAME_MAXLEN + 4]; /* lsi_osd_uuid format = 'lsi->ls_osd_obdname'_UUID */ char lsi_osd_uuid[MTI_NAME_MAXLEN + 9]; 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 */ /* protect lsi_lwp_list */ struct mutex lsi_lwp_mutex; struct list_head lsi_lwp_list; unsigned long lsi_lwp_started:1, lsi_server_started:1; }; #define LSI_UMOUNT_FAILOVER 0x00200000 #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_fileset(sb) (s2lsi(sb)->lsi_lmd->lmd_fileset) # ifdef HAVE_SERVER_SUPPORT /* 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_MASK 0xFFFF /* * This limit is arbitrary (131072 clients on x86), but it is convenient to use * 2^n * PAGE_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_SIZE * 8) #define LR_MAX_CLIENTS (128 * 1024UL) #else #define LR_MAX_CLIENTS (PAGE_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 /** store OST index in the IDIF */ #define OBD_ROCOMPAT_IDX_IN_IDIF 0x00000002 /** 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 /** multiple RPCs in flight */ #define OBD_INCOMPAT_MULTI_RPCS 0x00000400 /* 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_generation = le32_to_cpu(buf->lcd_generation); } 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_generation = cpu_to_le32(lcd->lcd_generation); } 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); } /****************** mount lookup info *********************/ struct lustre_mount_info { char *lmi_name; struct super_block *lmi_sb; struct list_head lmi_list_chain; }; /****************** prototypes *********************/ /* obd_mount_server.c */ int server_fill_super(struct super_block *sb); struct lustre_mount_info *server_get_mount(const char *name); int server_put_mount(const char *name, bool dereg_mnt); struct mgs_target_info; int server_mti_print(const char *title, struct mgs_target_info *mti); void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd); /* obd_mount.c */ int server_name2svname(const char *label, char *svname, const char **endptr, size_t svsize); int server_name_is_ost(const char *svname); int target_name2index(const char *svname, u32 *idx, const char **endptr); 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); #endif /* HAVE_SERVER_SUPPORT */ int server_name2fsname(const char *svname, char *fsname, const char **endptr); void obdname2fsname(const char *tgt, char *fsname, size_t fslen); void lustre_register_super_ops(struct module *mod, int (*cfs)(struct super_block *sb), void (*ksc)(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); int mgc_logname2resid(char *fsname, struct ldlm_res_id *res_id, int type); /** @} disk */ #endif /* _LUSTRE_DISK_H */