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 #ifndef OBD_FILTER_DEVICENAME
20 # define OBD_FILTER_DEVICENAME "obdfilter"
23 #ifndef OBD_FILTER_SAN_DEVICENAME
24 # define OBD_FILTER_SAN_DEVICENAME "sanobdfilter"
27 #define LAST_RCVD "last_rcvd"
28 #define FILTER_INIT_OBJID 0
30 #define FILTER_LR_SERVER_SIZE 512
32 #define FILTER_LR_CLIENT_START 8192
33 #define FILTER_LR_CLIENT_SIZE 128
35 /* This limit is arbitrary, but for now we fit it in 1 page (32k clients) */
36 #define FILTER_LR_MAX_CLIENTS (PAGE_SIZE * 8)
38 #define FILTER_RECOVERY_TIMEOUT (obd_timeout * 5 * HZ / 2) /* *waves hands* */
40 #define FILTER_ROCOMPAT_SUPP (0)
42 #define FILTER_INCOMPAT_GROUPS 0x00000001
43 #define FILTER_INCOMPAT_SUPP (FILTER_INCOMPAT_GROUPS)
45 #define FILTER_GRANT_CHUNK (2ULL*1024*1024)
47 /* Data stored per server at the head of the last_rcvd file. In le32 order.
48 * Try to keep this the same as mds_server_data so we might one day merge. */
49 struct filter_server_data {
50 __u8 fsd_uuid[40]; /* server UUID */
51 __u64 fsd_unused; /* was fsd_last_objid - don't use for now */
52 __u64 fsd_last_transno; /* last completed transaction ID */
53 __u64 fsd_mount_count; /* FILTER incarnation number */
54 __u32 fsd_feature_compat; /* compatible feature flags */
55 __u32 fsd_feature_rocompat;/* read-only compatible feature flags */
56 __u32 fsd_feature_incompat;/* incompatible feature flags */
57 __u32 fsd_server_size; /* size of server data area */
58 __u32 fsd_client_start; /* start of per-client data area */
59 __u16 fsd_client_size; /* size of per-client data area */
60 __u16 fsd_subdir_count; /* number of subdirectories for objects */
61 __u64 fsd_catalog_oid; /* recovery catalog object id */
62 __u32 fsd_catalog_ogen; /* recovery catalog inode generation */
63 __u8 fsd_peeruuid[40]; /* UUID of MDS associated with this OST */
64 __u8 fsd_padding[FILTER_LR_SERVER_SIZE - 140];
67 /* Data stored per client in the last_rcvd file. In le32 order. */
68 struct filter_client_data {
69 __u8 fcd_uuid[40]; /* client UUID */
70 __u64 fcd_last_rcvd; /* last completed transaction ID */
71 __u64 fcd_last_xid; /* client RPC xid for the last transaction */
72 __u32 fcd_group; /* client group num*/
73 __u8 fcd_padding[FILTER_LR_CLIENT_SIZE - 60];
76 #define FILTER_DENTRY_MAGIC 0x9efba101
77 #define FILTER_FLAG_DESTROY 0x0001 /* destroy dentry on last file close */
79 /* Limit the returned fields marked valid to those that we actually might set */
80 #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER |\
81 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ|\
82 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME)
85 LPROC_FILTER_READ_BYTES = 0,
86 LPROC_FILTER_WRITE_BYTES = 1,
90 #define FILTER_MAX_CACHE_SIZE (32 * 1024 * 1024) /* was OBD_OBJECT_EOF */
92 /* We have to pass a 'created' array to fsfilt_map_inode_pages() which we
93 * then ignore. So we pre-allocate one that everyone can use... */
94 #define OBDFILTER_CREATED_SCRATCHPAD_ENTRIES 1024
95 extern int *obdfilter_created_scratchpad;
98 void f_dput(struct dentry *);
99 struct dentry *filter_id2dentry(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 *, int group);
107 __u64 filter_last_id(struct filter_obd *, int group);
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_write_extents(struct obd_export *exp, struct obd_ioobj *obj,
126 int objcount, int niocount,struct niobuf_local *local,
128 int filter_do_cow(struct obd_export *exp, struct obd_ioobj *obj,
129 int nioo, struct niobuf_remote *rnb);
130 int filter_brw(int cmd, struct obd_export *, struct obdo *,
131 struct lov_stripe_md *, obd_count oa_bufs, struct brw_page *,
132 struct obd_trans_info *);
133 void flip_into_page_cache(struct inode *inode, struct page *new_page);
135 void filter_free_dio_pages(int objcount, struct obd_ioobj *obj,
136 int niocount, struct niobuf_local *res);
139 int filter_commitrw_write(struct obd_export *exp, struct obdo *oa, int objcount,
140 struct obd_ioobj *obj, int niocount,
141 struct niobuf_local *res, struct obd_trans_info *oti,
143 obd_size filter_grant_space_left(struct obd_export *exp);
144 long filter_grant(struct obd_export *exp, obd_size current_grant,
145 obd_size want, obd_size fs_space_left);
146 void filter_grant_commit(struct obd_export *exp, int niocount,
147 struct niobuf_local *res);
149 int filter_alloc_iobuf(int rw, int num_pages, void **ret);
150 void filter_free_iobuf(void *iobuf);
151 int filter_iobuf_add_page(struct obd_device *obd, void *iobuf,
152 struct inode *inode, struct page *page);
153 int filter_direct_io(int rw, struct dentry *dchild, void *iobuf,
154 struct obd_export *exp, struct iattr *attr,
155 struct obd_trans_info *oti, void **wait_handle);
158 struct ost_filterdata {
162 int filter_log_sz_change(struct llog_handle *cathandle,
163 struct lustre_id *id, __u32 io_epoch,
164 struct llog_cookie *logcookie,
165 struct inode *inode);
166 //int filter_get_catalog(struct obd_device *);
167 void filter_cancel_cookies_cb(struct obd_device *obd, __u64 transno,
168 void *cb_data, int error);
169 int filter_recov_log_unlink_cb(struct llog_handle *llh,
170 struct llog_rec_hdr *rec, void *data);
173 int filter_san_setup(struct obd_device *obd, obd_count len, void *buf);
174 int filter_san_preprw(int cmd, struct obd_export *, struct obdo *, int objcount,
175 struct obd_ioobj *, int niocount, struct niobuf_remote *);
178 void filter_tally_write(struct filter_obd *filter, struct page **pages,
179 int nr_pages, unsigned long *blocks,
180 int blocks_per_page);
181 void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb,
183 int lproc_filter_attach_seqstat(struct obd_device *dev);
185 static inline filter_tally_write(struct filter_obd *filter,
186 struct page **pages, int nr_pages,
187 unsigned long *blocks, int blocks_per_page) {}
188 static inline void filter_tally_read(struct filter_obd *filter,
189 struct niobuf_local *lnb, int niocount)
191 static inline lproc_filter_attach_seqstat(struct obd_device *dev) {}