/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2001-2003 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre 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 for more details. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * MDS data structures. * See also lustre_idl.h for wire formats of requests. * */ #ifndef _LUSTRE_MDS_H #define _LUSTRE_MDS_H #ifdef __KERNEL__ # include # include #endif #include #include #include #include #include #include #include struct ldlm_lock_desc; struct mds_obd; struct ptlrpc_connection; struct ptlrpc_client; struct obd_export; struct ptlrpc_request; struct obd_device; struct ll_file_data; #define LUSTRE_MDS_NAME "mds" #define LUSTRE_MDT_NAME "mdt" #define LUSTRE_MDC_NAME "mdc" struct mds_update_record { __u32 ur_opcode; struct ll_fid *ur_fid1; struct ll_fid *ur_fid2; int ur_namelen; char *ur_name; int ur_tgtlen; char *ur_tgt; int ur_eadatalen; void *ur_eadata; int ur_cookielen; struct llog_cookie *ur_logcookies; struct iattr ur_iattr; struct lvfs_ucred ur_uc; __u64 ur_rdev; __u32 ur_mode; __u64 ur_time; __u32 ur_flags; }; #define _ur_fsuid ur_uc.luc_fsuid #define _ur_fsgid ur_uc.luc_fsgid #define _ur_cap ur_uc.luc_cap #define _ur_suppgid1 ur_uc.luc_suppgid1 #define _ur_suppgid2 ur_uc.luc_suppgid2 /* i_attr_flags holds the open count in the inode in 2.4 */ //XXX Alex implement on 2.4 with i_attr_flags and find soln for 2.5 please #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) # define mds_inode_oatomic(inode) ((atomic_t *)&(inode)->i_cindex) #else # define mds_inode_oatomic(inode) ((atomic_t *)&(inode)->i_attr_flags) #endif # define mds_open_orphan_count(inode) \ atomic_read(mds_inode_oatomic(inode)) # define mds_open_orphan_inc(inode) \ atomic_inc(mds_inode_oatomic(inode)) # define mds_open_orphan_dec_test(inode) \ atomic_dec_and_test(mds_inode_oatomic(inode)) #define mds_inode_is_orphan(inode) ((inode)->i_flags & 0x4000000) #define mds_inode_set_orphan(inode) (inode)->i_flags |= 0x4000000 #define MDS_LR_SERVER_SIZE 512 #define MDS_LR_CLIENT_START 8192 #define MDS_LR_CLIENT_SIZE 128 #if MDS_LR_CLIENT_START < MDS_LR_SERVER_SIZE #error "Can't have MDS_LR_CLIENT_START < MDS_LR_SERVER_SIZE" #endif #define MDS_CLIENT_SLOTS 17 #define MDS_ROCOMPAT_LOVOBJID 0x00000001 #define MDS_ROCOMPAT_SUPP (MDS_ROCOMPAT_LOVOBJID) #define MDS_INCOMPAT_SUPP (0) #define REAL_MDS_NUMBER 1 #define CACHE_MDS_NUMBER 0 /*flags for indicate the record are come from cmobd reint or mdc create */ #define REC_REINT_CREATE 0x0001 /* Data stored per server at the head of the last_rcvd file. In le32 order. * Try to keep this the same as fsd_server_data so we might one day merge. */ struct mds_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[MDS_LR_SERVER_SIZE - 140]; }; /* Data stored per client in the last_rcvd file. In le32 order. */ struct mds_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[MDS_LR_CLIENT_SIZE - 64]; }; /* file data for open files on MDS */ struct mds_file_data { struct portals_handle mfd_handle; /* must be first */ atomic_t mfd_refcount; struct list_head mfd_list; __u64 mfd_xid; int mfd_mode; struct dentry *mfd_dentry; }; /* mds/mds_reint.c */ int mds_reint_rec(struct mds_update_record *r, int offset, struct ptlrpc_request *req, struct lustre_handle *); /* mds/handler.c */ #ifdef __KERNEL__ struct dentry *mds_fid2locked_dentry(struct obd_device *obd, struct ll_fid *fid, struct vfsmount **mnt, int lock_mode, struct lustre_handle *lockh, int *pmode, char *name, int namelen, __u64 lockpart); struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt); int mds_update_server_data(struct obd_device *, int force_sync); /* mds/mds_fs.c */ int mds_fs_setup(struct obd_device *obddev, struct vfsmount *mnt); int mds_fs_cleanup(struct obd_device *obddev, int failover); #endif /* mds/mds_lov.c */ /* mdc/mdc_locks.c */ int it_disposition(struct lookup_intent *it, int flag); void it_set_disposition(struct lookup_intent *it, int flag); int it_open_error(int phase, struct lookup_intent *it); int mdc_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data); int mdc_change_cbdata(struct obd_export *exp, struct ll_fid *fid, ldlm_iterator_t it, void *data); int mdc_intent_lock(struct obd_export *exp, struct ll_uctxt *, struct ll_fid *parent, const char *name, int len, void *lmm, int lmmsize, struct ll_fid *child, struct lookup_intent *, int, struct ptlrpc_request **reqp, ldlm_blocking_callback cb_blocking); int mdc_enqueue(struct obd_export *exp, int lock_type, struct lookup_intent *it, int lock_mode, struct mdc_op_data *data, struct lustre_handle *lockh, void *lmm, int lmmlen, ldlm_completion_callback cb_completion, ldlm_blocking_callback cb_blocking, void *cb_data); /* mdc/mdc_request.c */ int mdc_req2lustre_md(struct obd_export *exp_mdc, struct ptlrpc_request *req, unsigned int offset, struct obd_export *exp_osc, struct lustre_md *md); int mdc_getstatus(struct obd_export *exp, struct ll_fid *rootfid); int mdc_getattr(struct obd_export *exp, struct ll_fid *fid, unsigned long valid, unsigned int ea_size, struct ptlrpc_request **request); int mdc_getattr_name(struct obd_export *exp, struct ll_fid *fid, char *filename, int namelen, unsigned long valid, unsigned int ea_size, struct ptlrpc_request **request); int mdc_setattr(struct obd_export *exp, struct mdc_op_data *data, struct iattr *iattr, void *ea, int ealen, void *ea2, int ea2len, struct ptlrpc_request **request); int mdc_open(struct obd_export *exp, obd_id ino, int type, int flags, struct lov_mds_md *lmm, int lmm_size, struct lustre_handle *fh, struct ptlrpc_request **); struct obd_client_handle; int mdc_set_open_replay_data(struct obd_export *exp, struct obd_client_handle *och, struct ptlrpc_request *open_req); int mdc_clear_open_replay_data(struct obd_export *exp, struct obd_client_handle *och); int mdc_close(struct obd_export *, struct obdo *, struct obd_client_handle *, struct ptlrpc_request **); int mdc_readpage(struct obd_export *exp, struct ll_fid *mdc_fid, __u64, struct page *, struct ptlrpc_request **); int mdc_create(struct obd_export *exp, struct mdc_op_data *op_data, const void *data, int datalen, int mode, __u32 uid, __u32 gid, __u64 rdev, struct ptlrpc_request **request); int mdc_unlink(struct obd_export *exp, struct mdc_op_data *data, struct ptlrpc_request **request); int mdc_link(struct obd_export *exp, struct mdc_op_data *data, struct ptlrpc_request **); int mdc_rename(struct obd_export *exp, struct mdc_op_data *data, const char *old, int oldlen, const char *new, int newlen, struct ptlrpc_request **request); int mdc_sync(struct obd_export *exp, struct ll_fid *fid, struct ptlrpc_request **); int mdc_create_client(struct obd_uuid uuid, struct ptlrpc_client *cl); /* Store the generation of a newly-created inode in |req| for replay. */ int mdc_store_inode_generation(struct obd_export *exp, struct ptlrpc_request *req, int reqoff, int repoff); int mdc_llog_process(struct obd_export *, char *logname, llog_cb_t, void *data); int mdc_done_writing(struct obd_export *exp, struct obdo *); int mdc_reint(struct ptlrpc_request *request, struct mdc_rpc_lock *rpc_lock, int level); static inline void mdc_pack_fid(struct ll_fid *fid, obd_id ino, __u32 gen, int type) { fid->id = ino; fid->generation = gen; fid->f_type = type; } /* ioctls for trying requests */ #define IOC_REQUEST_TYPE 'f' #define IOC_REQUEST_MIN_NR 30 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long) #define IOC_REQUEST_READPAGE _IOWR('f', 31, long) #define IOC_REQUEST_SETATTR _IOWR('f', 32, long) #define IOC_REQUEST_CREATE _IOWR('f', 33, long) #define IOC_REQUEST_OPEN _IOWR('f', 34, long) #define IOC_REQUEST_CLOSE _IOWR('f', 35, long) #define IOC_REQUEST_MAX_NR 35 #define MDS_CHECK_RESENT(req, reconstruct) \ { \ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { \ struct mds_client_data *mcd = \ req->rq_export->exp_mds_data.med_mcd; \ if (mcd->mcd_last_xid == req->rq_xid) { \ reconstruct; \ RETURN(0); \ } \ DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")", \ mcd->mcd_last_xid); \ } \ } #endif