1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2003 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
10 #ifndef _FILTER_INTERNAL_H
11 #define _FILTER_INTERNAL_H
14 # include <linux/spinlock.h>
16 #include <linux/lustre_handles.h>
17 #include <linux/obd.h>
19 #define FILTER_LAYOUT_VERSION "2"
21 #ifndef OBD_FILTER_DEVICENAME
22 # define OBD_FILTER_DEVICENAME "obdfilter"
25 #ifndef OBD_FILTER_SAN_DEVICENAME
26 # define OBD_FILTER_SAN_DEVICENAME "sanobdfilter"
29 #define LAST_RCVD "last_rcvd"
30 #define FILTER_INIT_OBJID 0
32 #define FILTER_LR_SERVER_SIZE 512
34 #define FILTER_LR_CLIENT_START 8192
35 #define FILTER_LR_CLIENT_SIZE 128
37 /* This limit is arbitrary, but for now we fit it in 1 page (32k clients) */
38 #define FILTER_LR_MAX_CLIENTS (PAGE_SIZE * 8)
39 #define FILTER_LR_MAX_CLIENT_WORDS (FILTER_LR_MAX_CLIENTS/sizeof(unsigned long))
41 #define FILTER_SUBDIR_COUNT 32 /* set to zero for no subdirs */
42 #define FILTER_GROUPS 3 /* must be at least 3; not dynamic yet */
44 #define FILTER_RECOVERY_TIMEOUT (obd_timeout * 5 * HZ / 2) /* *waves hands* */
46 #define FILTER_ROCOMPAT_SUPP (0)
48 #define FILTER_INCOMPAT_GROUPS 0x00000001
49 #define FILTER_INCOMPAT_SUPP (FILTER_INCOMPAT_GROUPS)
51 #define FILTER_GRANT_CHUNK (2ULL*1024*1024)
53 /* Data stored per server at the head of the last_rcvd file. In le32 order.
54 * Try to keep this the same as mds_server_data so we might one day merge. */
55 struct filter_server_data {
56 __u8 fsd_uuid[40]; /* server UUID */
57 __u64 fsd_unused; /* was fsd_last_objid - don't use for now */
58 __u64 fsd_last_transno; /* last completed transaction ID */
59 __u64 fsd_mount_count; /* FILTER incarnation number */
60 __u32 fsd_feature_compat; /* compatible feature flags */
61 __u32 fsd_feature_rocompat;/* read-only compatible feature flags */
62 __u32 fsd_feature_incompat;/* incompatible feature flags */
63 __u32 fsd_server_size; /* size of server data area */
64 __u32 fsd_client_start; /* start of per-client data area */
65 __u16 fsd_client_size; /* size of per-client data area */
66 __u16 fsd_subdir_count; /* number of subdirectories for objects */
67 __u64 fsd_catalog_oid; /* recovery catalog object id */
68 __u32 fsd_catalog_ogen; /* recovery catalog inode generation */
69 __u8 fsd_peeruuid[40]; /* UUID of MDS associated with this OST */
70 __u8 fsd_padding[FILTER_LR_SERVER_SIZE - 140];
73 /* Data stored per client in the last_rcvd file. In le32 order. */
74 struct filter_client_data {
75 __u8 fcd_uuid[40]; /* client UUID */
76 __u64 fcd_last_rcvd; /* last completed transaction ID */
77 __u64 fcd_last_xid; /* client RPC xid for the last transaction */
78 __u8 fcd_padding[FILTER_LR_CLIENT_SIZE - 56];
81 #define FILTER_DENTRY_MAGIC 0x9efba101
82 #define FILTER_FLAG_DESTROY 0x0001 /* destroy dentry on last file close */
84 /* Limit the returned fields marked valid to those that we actually might set */
85 #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER |\
86 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ|\
87 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME)
90 LPROC_FILTER_READ_BYTES = 0,
91 LPROC_FILTER_WRITE_BYTES = 1,
95 #define FILTER_MAX_CACHE_SIZE OBD_OBJECT_EOF
98 void f_dput(struct dentry *);
99 struct dentry *filter_fid2dentry(struct obd_device *, struct dentry *dir,
100 obd_gr group, obd_id id);
101 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
103 #define filter_oa2dentry(obd, oa) __filter_oa2dentry(obd, oa, __FUNCTION__)
105 int filter_finish_transno(struct obd_export *, struct obd_trans_info *, int rc);
106 __u64 filter_next_id(struct filter_obd *, struct obdo *);
107 __u64 filter_last_id(struct filter_obd *, struct obdo *);
108 int filter_update_server_data(struct obd_device *, struct file *,
109 struct filter_server_data *, int force_sync);
110 int filter_update_last_objid(struct obd_device *, obd_gr, int force_sync);
111 int filter_common_setup(struct obd_device *, obd_count len, void *buf,
115 extern struct ldlm_valblock_ops filter_lvbo;
119 int filter_preprw(int cmd, struct obd_export *, struct obdo *, int objcount,
120 struct obd_ioobj *, int niocount, struct niobuf_remote *,
121 struct niobuf_local *, struct obd_trans_info *);
122 int filter_commitrw(int cmd, struct obd_export *, struct obdo *, int objcount,
123 struct obd_ioobj *, int niocount, struct niobuf_local *,
124 struct obd_trans_info *, int rc);
125 int filter_brw(int cmd, struct obd_export *, struct obdo *,
126 struct lov_stripe_md *, obd_count oa_bufs, struct brw_page *,
127 struct obd_trans_info *);
128 void flip_into_page_cache(struct inode *inode, struct page *new_page);
131 int filter_commitrw_write(struct obd_export *exp, struct obdo *oa, int objcount,
132 struct obd_ioobj *obj, int niocount,
133 struct niobuf_local *res, struct obd_trans_info *oti,
135 obd_size filter_grant_space_left(struct obd_export *exp);
136 long filter_grant(struct obd_export *exp, obd_size current_grant,
137 obd_size want, obd_size fs_space_left);
138 void filter_grant_commit(struct obd_export *exp, int niocount,
139 struct niobuf_local *res);
142 struct ost_filterdata {
145 int filter_log_sz_change(struct llog_handle *cathandle,
146 struct ll_fid *mds_fid,
148 struct llog_cookie *logcookie,
149 struct inode *inode);
150 //int filter_get_catalog(struct obd_device *);
151 void filter_cancel_cookies_cb(struct obd_device *obd, __u64 transno,
152 void *cb_data, int error);
153 int filter_recov_log_unlink_cb(struct llog_handle *llh,
154 struct llog_rec_hdr *rec, void *data);
157 int filter_san_setup(struct obd_device *obd, obd_count len, void *buf);
158 int filter_san_preprw(int cmd, struct obd_export *, struct obdo *, int objcount,
159 struct obd_ioobj *, int niocount, struct niobuf_remote *);
162 void filter_tally_write(struct filter_obd *filter, struct page **pages,
163 int nr_pages, unsigned long *blocks,
164 int blocks_per_page);
165 void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb,
167 int lproc_filter_attach_seqstat(struct obd_device *dev);
169 static inline filter_tally_write(struct filter_obd *filter,
170 struct page **pages, int nr_pages,
171 unsigned long *blocks, int blocks_per_page) {}
172 static inline void filter_tally_read(struct filter_obd *filter,
173 struct niobuf_local *lnb, int niocount)
175 static inline lproc_filter_attach_seqstat(struct obd_device *dev) {}