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 2
29 /* max creates/sec * journal->j_commit_interval */
30 #define FILTER_SKIP_OBJID (10000 * 5)
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 */
43 #define FILTER_MOUNT_RECOV 2
44 #define FILTER_RECOVERY_TIMEOUT (obd_timeout * 5 * HZ / 2) /* *waves hands* */
46 /* Data stored per server at the head of the last_rcvd file. In le32 order. */
47 struct filter_server_data {
48 __u8 fsd_uuid[37]; /* server UUID */
49 __u8 fsd_uuid_padding[3]; /* unused */
50 __u64 fsd_last_objid; /* last created object ID */
51 __u64 fsd_last_transno; /* last completed transaction ID */
52 __u64 fsd_mount_count; /* FILTER incarnation number */
53 __u32 fsd_feature_compat; /* compatible feature flags */
54 __u32 fsd_feature_rocompat;/* read-only compatible feature flags */
55 __u32 fsd_feature_incompat;/* incompatible feature flags */
56 __u32 fsd_server_size; /* size of server data area */
57 __u32 fsd_client_start; /* start of per-client data area */
58 __u16 fsd_client_size; /* size of per-client data area */
59 __u16 fsd_subdir_count; /* number of subdirectories for objects */
60 __u64 fsd_catalog_oid; /* recovery catalog object id */
61 __u32 fsd_catalog_ogen; /* recovery catalog inode generation */
62 __u8 fsd_peeruuid[37]; /* UUID of MDS associated with this OST */
63 __u8 peer_padding[3]; /* unused */
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[37]; /* client UUID */
70 __u8 fcd_uuid_padding[3]; /* unused */
71 __u64 fcd_last_rcvd; /* last completed transaction ID */
72 __u64 fcd_mount_count; /* FILTER incarnation number */
73 __u64 fcd_last_xid; /* client RPC xid for the last transaction */
74 __u8 fcd_padding[FILTER_LR_CLIENT_SIZE - 64];
77 /* file data for open files on OST */
78 struct filter_file_data {
79 struct portals_handle ffd_handle;
80 atomic_t ffd_refcount;
81 struct list_head ffd_export_list; /* export open list - fed_lock */
82 struct file *ffd_file; /* file handle */
85 struct filter_dentry_data {
86 struct llog_cookie fdd_cookie;
89 atomic_t fdd_open_count;
93 #define FILTER_DENTRY_MAGIC 0x9efba101
94 #define FILTER_FLAG_DESTROY 0x0001 /* destroy dentry on last file close */
96 /* Limit the returned fields marked valid to those that we actually might set */
97 #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER |\
98 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ|\
99 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME)
102 LPROC_FILTER_READ_BYTES = 0,
103 LPROC_FILTER_WRITE_BYTES = 1,
108 struct dentry *filter_parent(struct obd_device *, obd_mode mode, obd_id objid);
109 struct dentry *filter_parent_lock(struct obd_device *, obd_mode mode,
110 obd_id objid, ldlm_mode_t lock_mode,
111 struct lustre_handle *lockh);
112 void f_dput(struct dentry *);
113 struct dentry *filter_fid2dentry(struct obd_device *, struct dentry *dir,
114 obd_mode mode, obd_id id);
115 struct dentry *__filter_oa2dentry(struct obd_device *obd, struct obdo *oa,
117 #define filter_oa2dentry(obd, oa) __filter_oa2dentry(obd, oa, __FUNCTION__)
119 int filter_finish_transno(struct obd_export *, struct obd_trans_info *, int rc);
120 __u64 filter_next_id(struct filter_obd *);
121 int filter_update_server_data(struct obd_device *, struct file *,
122 struct filter_server_data *);
123 int filter_common_setup(struct obd_device *, obd_count len, void *buf,
127 int filter_preprw(int cmd, struct obd_export *, struct obdo *, int objcount,
128 struct obd_ioobj *, int niocount, struct niobuf_remote *,
129 struct niobuf_local *, struct obd_trans_info *);
130 int filter_commitrw(int cmd, struct obd_export *, struct obdo *, int objcount,
131 struct obd_ioobj *, int niocount, struct niobuf_local *,
132 struct obd_trans_info *);
133 int filter_brw(int cmd, struct lustre_handle *, struct obdo *,
134 struct lov_stripe_md *, obd_count oa_bufs, struct brw_page *,
135 struct obd_trans_info *);
138 int filter_log_cancel(struct lustre_handle *, struct lov_stripe_md *,
139 int num_cookies, struct llog_cookie *, int flags);
140 int filter_log_op_create(struct llog_handle *cathandle, struct ll_fid *mds_fid,
141 obd_id oid, obd_count ogen, struct llog_cookie *);
142 int filter_log_op_orphan(struct llog_handle *cathandle, obd_id oid,
143 obd_count ogen, struct llog_cookie *);
144 struct llog_handle *filter_get_catalog(struct obd_device *);
145 void filter_put_catalog(struct llog_handle *cathandle);
148 int filter_san_setup(struct obd_device *obd, obd_count len, void *buf);
149 int filter_san_preprw(int cmd, struct obd_export *, struct obdo *, int objcount,
150 struct obd_ioobj *, int niocount, struct niobuf_remote *);