/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2003 Cluster File Systems, Inc. * * This code is issued under the GNU General Public License. * See the file COPYING in this distribution */ #ifndef _FILTER_INTERNAL_H #define _FILTER_INTERNAL_H #ifdef __KERNEL__ # include #endif #include #include #ifndef OBD_FILTER_DEVICENAME # define OBD_FILTER_DEVICENAME "obdfilter" #endif #ifndef OBD_FILTER_SAN_DEVICENAME # define OBD_FILTER_SAN_DEVICENAME "sanobdfilter" #endif #define LAST_RCVD "last_rcvd" #define FILTER_INIT_OBJID 0 #define FILTER_LR_SERVER_SIZE 512 #define FILTER_LR_CLIENT_START 8192 #define FILTER_LR_CLIENT_SIZE 128 /* This limit is arbitrary, but for now we fit it in 1 page (32k clients) */ #define FILTER_LR_MAX_CLIENTS (PAGE_SIZE * 8) #define FILTER_RECOVERY_TIMEOUT (obd_timeout * 5 * HZ / 2) /* *waves hands* */ #define FILTER_ROCOMPAT_SUPP (0) #define FILTER_INCOMPAT_GROUPS 0x00000001 #define FILTER_INCOMPAT_SUPP (FILTER_INCOMPAT_GROUPS) #define FILTER_GRANT_CHUNK (2ULL*1024*1024) /* Data stored per server at the head of the last_rcvd file. In le32 order. * Try to keep this the same as mds_server_data so we might one day merge. */ struct filter_server_data { __u8 fsd_uuid[40]; /* server UUID */ __u64 fsd_unused; /* was fsd_last_objid - don't use for now */ __u64 fsd_last_transno; /* last completed transaction ID */ __u64 fsd_mount_count; /* FILTER incarnation number */ __u32 fsd_feature_compat; /* compatible feature flags */ __u32 fsd_feature_rocompat;/* read-only compatible feature flags */ __u32 fsd_feature_incompat;/* incompatible feature flags */ __u32 fsd_server_size; /* size of server data area */ __u32 fsd_client_start; /* start of per-client data area */ __u16 fsd_client_size; /* size of per-client data area */ __u16 fsd_subdir_count; /* number of subdirectories for objects */ __u64 fsd_catalog_oid; /* recovery catalog object id */ __u32 fsd_catalog_ogen; /* recovery catalog inode generation */ __u8 fsd_peeruuid[40]; /* UUID of MDS associated with this OST */ __u8 fsd_padding[FILTER_LR_SERVER_SIZE - 140]; }; /* Data stored per client in the last_rcvd file. In le32 order. */ struct filter_client_data { __u8 fcd_uuid[40]; /* client UUID */ __u64 fcd_last_rcvd; /* last completed transaction ID */ __u64 fcd_last_xid; /* client RPC xid for the last transaction */ __u32 fcd_group; /* client group num*/ __u8 fcd_padding[FILTER_LR_CLIENT_SIZE - 60]; }; #define FILTER_DENTRY_MAGIC 0x9efba101 #define FILTER_FLAG_DESTROY 0x0001 /* destroy dentry on last file close */ /* Limit the returned fields marked valid to those that we actually might set */ #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER |\ OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ|\ OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME) enum { LPROC_FILTER_READ_BYTES = 0, LPROC_FILTER_WRITE_BYTES = 1, LPROC_FILTER_LAST, }; #define FILTER_MAX_CACHE_SIZE (32 * 1024 * 1024) /* was OBD_OBJECT_EOF */ /* We have to pass a 'created' array to fsfilt_map_inode_pages() which we * then ignore. So we pre-allocate one that everyone can use... */ #define OBDFILTER_CREATED_SCRATCHPAD_ENTRIES 1024 extern int *obdfilter_created_scratchpad; /* filter.c */ void f_dput(struct dentry *); struct dentry *filter_id2dentry(struct obd_device *, struct dentry *dir, obd_gr group, obd_id id); struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa, const char *what); #define filter_oa2dentry(obd, oa) __filter_oa2dentry(obd, oa, __FUNCTION__) int filter_finish_transno(struct obd_export *, struct obd_trans_info *, int rc); __u64 filter_next_id(struct filter_obd *, int group); __u64 filter_last_id(struct filter_obd *, int group); int filter_update_server_data(struct obd_device *, struct file *, struct filter_server_data *, int force_sync); int filter_update_last_objid(struct obd_device *, obd_gr, int force_sync); int filter_common_setup(struct obd_device *, obd_count len, void *buf, char *option); /* filter_lvb.c */ extern struct ldlm_valblock_ops filter_lvbo; /* filter_io.c */ int filter_preprw(int cmd, struct obd_export *, struct obdo *, int objcount, struct obd_ioobj *, int niocount, struct niobuf_remote *, struct niobuf_local *, struct obd_trans_info *); int filter_commitrw(int cmd, struct obd_export *, struct obdo *, int objcount, struct obd_ioobj *, int niocount, struct niobuf_local *, struct obd_trans_info *, int rc); int filter_write_extents(struct obd_export *exp, struct obd_ioobj *obj, int objcount, int niocount,struct niobuf_local *local, int rc); int filter_do_cow(struct obd_export *exp, struct obd_ioobj *obj, int nioo, struct niobuf_remote *rnb); int filter_brw(int cmd, struct obd_export *, struct obdo *, struct lov_stripe_md *, obd_count oa_bufs, struct brw_page *, struct obd_trans_info *); void flip_into_page_cache(struct inode *inode, struct page *new_page); void filter_free_dio_pages(int objcount, struct obd_ioobj *obj, int niocount, struct niobuf_local *res); /* filter_io_*.c */ int filter_commitrw_write(struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, int niocount, struct niobuf_local *res, struct obd_trans_info *oti, int rc); obd_size filter_grant_space_left(struct obd_export *exp); long filter_grant(struct obd_export *exp, obd_size current_grant, obd_size want, obd_size fs_space_left); void filter_grant_commit(struct obd_export *exp, int niocount, struct niobuf_local *res); int filter_alloc_iobuf(int rw, int num_pages, void **ret); void filter_free_iobuf(void *iobuf); int filter_iobuf_add_page(struct obd_device *obd, void *iobuf, struct inode *inode, struct page *page); int filter_direct_io(int rw, struct dentry *dchild, void *iobuf, struct obd_export *exp, struct iattr *attr, struct obd_trans_info *oti, void **wait_handle); /* filter_log.c */ struct ost_filterdata { __u32 ofd_epoch; }; int filter_log_sz_change(struct llog_handle *cathandle, struct lustre_id *id, __u32 io_epoch, struct llog_cookie *logcookie, struct inode *inode); //int filter_get_catalog(struct obd_device *); void filter_cancel_cookies_cb(struct obd_device *obd, __u64 transno, void *cb_data, int error); int filter_recov_log_unlink_cb(struct llog_handle *llh, struct llog_rec_hdr *rec, void *data); /* filter_san.c */ int filter_san_setup(struct obd_device *obd, obd_count len, void *buf); int filter_san_preprw(int cmd, struct obd_export *, struct obdo *, int objcount, struct obd_ioobj *, int niocount, struct niobuf_remote *); #ifdef __KERNEL__ void filter_tally_write(struct filter_obd *filter, struct page **pages, int nr_pages, unsigned long *blocks, int blocks_per_page); void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb, int niocount); int lproc_filter_attach_seqstat(struct obd_device *dev); #else static inline filter_tally_write(struct filter_obd *filter, struct page **pages, int nr_pages, unsigned long *blocks, int blocks_per_page) {} static inline void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb, int niocount) {} static inline lproc_filter_attach_seqstat(struct obd_device *dev) {} #endif #endif