1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
13 struct lov_oinfo { /* per-child structure */
14 __u64 loi_id; /* object ID on the target OST */
15 struct lustre_handle *loi_handle; /* handle for object on OST */
16 int loi_ost_idx; /* OST stripe index in lmd_objects array */
19 struct lov_stripe_md {
21 __u64 lsm_object_id; /* lov object id */
22 __u64 lsm_stripe_size; /* size of the stripe */
23 __u32 lsm_stripe_pattern; /* per-lov object stripe pattern */
24 int lsm_stripe_offset; /* offset of first stripe in lmd_objects */
25 int lsm_stripe_count; /* how many objects are being striped on */
26 struct lov_oinfo lsm_oinfo[0];
30 # include <linux/fs.h>
31 # include <linux/list.h>
32 # include <linux/smp_lock.h>
33 # include <linux/proc_fs.h>
35 # include <linux/lustre_lib.h>
36 # include <linux/lustre_idl.h>
37 # include <linux/lustre_mds.h>
38 # include <linux/lustre_export.h>
41 struct list_head typ_chain;
42 struct obd_ops *typ_ops;
43 struct proc_dir_entry *typ_procroot;
55 /* Individual type definitions */
58 struct super_block *e2_sb;
59 struct vfsmount *e2_vfsmnt;
68 #define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
69 #define OBD_CTXT_DEBUG /* development-only debugging */
71 struct vfsmount *pwdmnt;
84 #define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
86 #define OBD_SET_CTXT_MAGIC(ctxt) do {} while(0)
91 struct super_block *fo_sb;
92 struct vfsmount *fo_vfsmnt;
93 struct obd_run_ctxt fo_ctxt;
94 struct dentry *fo_dentry_O;
95 struct dentry *fo_dentry_O_mode[16];
96 spinlock_t fo_objidlock; /* protects fo_lastobjid increment */
98 struct file_operations *fo_fop;
99 struct inode_operations *fo_iop;
100 struct address_space_operations *fo_aops;
101 struct list_head fo_export_list;
102 spinlock_t fo_fddlock; /* protects setting dentry->d_fsdata */
105 struct mds_server_data;
108 struct obd_import cl_import;
109 struct semaphore cl_sem;
111 obd_uuid_t cl_target_uuid; /* XXX -> lustre_name */
112 /* max_mds_easize is purely a performance thing so we don't have to
113 * call obd_size_wiremd() all the time. */
114 int cl_max_mds_easize;
115 struct obd_device *cl_containing_lov;
118 #define IOC_OSC_TYPE 'h'
119 #define IOC_OSC_MIN_NR 20
120 #define IOC_OSC_REGISTER_LOV _IOWR('h', 20, struct obd_device *)
121 #define IOC_OSC_MAX_NR 50
124 struct ptlrpc_service *mds_service;
127 struct super_block *mds_sb;
128 struct super_operations *mds_sop;
129 struct vfsmount *mds_vfsmnt;
130 struct obd_run_ctxt mds_ctxt;
131 struct file_operations *mds_fop;
132 struct inode_operations *mds_iop;
133 struct address_space_operations *mds_aops;
134 struct mds_fs_operations *mds_fsops;
137 struct file *mds_rcvd_filp;
138 struct semaphore mds_transno_sem;
139 __u64 mds_last_committed;
141 __u64 mds_mount_count;
142 struct ll_fid mds_rootfid;
143 struct mds_server_data *mds_server_data;
145 wait_queue_head_t mds_next_transno_waitq;
146 __u64 mds_next_recovery_transno;
147 int mds_recoverable_clients;
148 struct list_head mds_recovery_queue;
149 struct list_head mds_delayed_reply_queue;
150 spinlock_t mds_processing_task_lock;
151 pid_t mds_processing_task;
155 struct ptlrpc_service *ldlm_cb_service;
156 struct ptlrpc_service *ldlm_cancel_service;
157 struct ptlrpc_client *ldlm_client;
158 struct ptlrpc_connection *ldlm_server_conn;
176 spinlock_t recovd_lock;
177 struct list_head recovd_managed_items; /* items managed */
178 struct list_head recovd_troubled_items; /* items in recovery */
180 wait_queue_head_t recovd_recovery_waitq;
181 wait_queue_head_t recovd_ctl_waitq;
182 wait_queue_head_t recovd_waitq;
183 struct task_struct *recovd_thread;
188 struct obdtrace_opstats *stats;
193 unsigned int snap_index; /* which snapshot index are we accessing */
200 struct ptlrpc_service *ost_service;
201 struct lustre_handle ost_conn; /* the local connection to the OBD */
204 struct echo_client_obd {
205 struct lustre_handle conn; /* the local connection to osc/lov */
208 struct lov_tgt_desc {
210 struct lustre_handle conn;
211 int active; /* is this target available for requests, etc */
216 struct obd_device *mdcobd;
217 struct lov_desc desc;
220 struct lov_tgt_desc *tgts;
223 struct niobuf_local {
230 void *target_private;
231 struct dentry *dentry;
234 #define N_LOCAL_TEMP_PAGE 0x00000001
236 /* corresponds to one of the obd's */
238 struct obd_type *obd_type;
240 /* common and UUID name of this device */
246 struct proc_dir_entry *obd_proc_entry;
247 struct list_head obd_exports;
248 struct list_head obd_imports;
249 struct ldlm_namespace *obd_namespace;
250 struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
251 /* a spinlock is OK for what we do now, may need a semaphore later */
252 spinlock_t obd_dev_lock;
254 struct ext2_obd ext2;
255 struct filter_obd filter;
257 struct client_obd cli;
259 struct echo_client_obd echo_client;;
260 // struct osc_obd osc;
261 struct ldlm_obd ldlm;
262 struct echo_obd echo;
263 struct recovd_obd recovd;
264 struct trace_obd trace;
267 struct snap_obd snap;
270 /* Fields used by LProcFS */
271 unsigned int cntr_mem_size;
276 int (*o_iocontrol)(long cmd, struct lustre_handle *, int len,
277 void *karg, void *uarg);
278 int (*o_get_info)(struct lustre_handle *, obd_count keylen, void *key,
279 obd_count *vallen, void **val);
280 int (*o_set_info)(struct lustre_handle *, obd_count keylen, void *key,
281 obd_count vallen, void *val);
282 int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
283 int (*o_detach)(struct obd_device *dev);
284 int (*o_setup) (struct obd_device *dev, obd_count len, void *data);
285 int (*o_cleanup)(struct obd_device *dev);
286 int (*o_connect)(struct lustre_handle *conn, struct obd_device *src,
287 obd_uuid_t cluuid, struct recovd_obd *recovd,
288 ptlrpc_recovery_cb_t recover);
289 int (*o_disconnect)(struct lustre_handle *conn);
292 int (*o_statfs)(struct lustre_handle *conn, struct obd_statfs *osfs);
293 int (*o_packmd)(struct lustre_handle *, struct lov_mds_md **wire_tgt,
294 struct lov_stripe_md *mem_src);
295 int (*o_unpackmd)(struct lustre_handle *,
296 struct lov_stripe_md **mem_tgt,
297 struct lov_mds_md *wire_src);
298 int (*o_preallocate)(struct lustre_handle *, obd_count *req,
300 int (*o_create)(struct lustre_handle *conn, struct obdo *oa,
301 struct lov_stripe_md **ea);
302 int (*o_destroy)(struct lustre_handle *conn, struct obdo *oa,
303 struct lov_stripe_md *ea);
304 int (*o_setattr)(struct lustre_handle *conn, struct obdo *oa,
305 struct lov_stripe_md *ea);
306 int (*o_getattr)(struct lustre_handle *conn, struct obdo *oa,
307 struct lov_stripe_md *ea);
308 int (*o_open)(struct lustre_handle *conn, struct obdo *oa,
309 struct lov_stripe_md *ea);
310 int (*o_close)(struct lustre_handle *conn, struct obdo *oa,
311 struct lov_stripe_md *ea);
312 int (*o_brw)(int rw, struct lustre_handle *conn,
313 struct lov_stripe_md *ea, obd_count oa_bufs,
314 struct brw_page *pgarr, struct obd_brw_set *);
315 int (*o_punch)(struct lustre_handle *conn, struct obdo *tgt,
316 struct lov_stripe_md *ea, obd_size count,
318 int (*o_sync)(struct lustre_handle *conn, struct obdo *tgt,
319 obd_size count, obd_off offset);
320 int (*o_migrate)(struct lustre_handle *conn, struct obdo *dst,
321 struct obdo *src, obd_size count, obd_off offset);
322 int (*o_copy)(struct lustre_handle *dstconn, struct obdo *dst,
323 struct lustre_handle *srconn, struct obdo *src,
324 obd_size count, obd_off offset);
325 int (*o_iterate)(struct lustre_handle *conn,
326 int (*)(obd_id, obd_gr, void *),
327 obd_id *startid, obd_gr group, void *data);
328 int (*o_preprw)(int cmd, struct lustre_handle *conn,
329 int objcount, struct obd_ioobj *obj,
330 int niocount, struct niobuf_remote *remote,
331 struct niobuf_local *local, void **desc_private);
332 int (*o_commitrw)(int cmd, struct lustre_handle *conn,
333 int objcount, struct obd_ioobj *obj,
334 int niocount, struct niobuf_local *local,
336 int (*o_enqueue)(struct lustre_handle *conn, struct lov_stripe_md *md,
337 struct lustre_handle *parent_lock,
338 __u32 type, void *cookie, int cookielen, __u32 mode,
339 int *flags, void *cb, void *data, int datalen,
340 struct lustre_handle *lockh);
341 int (*o_cancel)(struct lustre_handle *, struct lov_stripe_md *md,
342 __u32 mode, struct lustre_handle *);
343 int (*o_cancel_unused)(struct lustre_handle *, struct lov_stripe_md *,
348 static inline void *mds_fs_start(struct mds_obd *mds, struct inode *inode,
351 return mds->mds_fsops->fs_start(inode, op);
354 static inline int mds_fs_commit(struct mds_obd *mds, struct inode *inode,
357 return mds->mds_fsops->fs_commit(inode, handle);
360 static inline int mds_fs_setattr(struct mds_obd *mds, struct dentry *dentry,
361 void *handle, struct iattr *iattr)
365 * NOTE: we probably don't need to take i_sem here when changing
366 * ATTR_SIZE because the MDS never needs to truncate a file.
367 * The ext2/ext3 code never truncates a directory, and files
368 * stored on the MDS are entirely sparse (no data blocks).
369 * If we do need to get it, we can do it here.
372 rc = mds->mds_fsops->fs_setattr(dentry, handle, iattr);
378 static inline int mds_fs_set_md(struct mds_obd *mds, struct inode *inode,
379 void *handle, struct lov_mds_md *md,
382 return mds->mds_fsops->fs_set_md(inode, handle, md, size);
385 static inline int mds_fs_get_md(struct mds_obd *mds, struct inode *inode,
386 struct lov_mds_md *md, int size)
388 return mds->mds_fsops->fs_get_md(inode, md, size);
391 static inline ssize_t mds_fs_readpage(struct mds_obd *mds, struct file *file,
392 char *buf, size_t count, loff_t *offset)
394 return mds->mds_fsops->fs_readpage(file, buf, count, offset);
397 /* Set up callback to update mds->mds_last_committed with the current
398 * value of mds->mds_last_recieved when this transaction is on disk.
400 static inline int mds_fs_set_last_rcvd(struct mds_obd *mds, void *handle)
402 return mds->mds_fsops->fs_set_last_rcvd(mds, handle);
405 /* Enable data journaling on the given file */
406 static inline ssize_t mds_fs_journal_data(struct mds_obd *mds,
409 return mds->mds_fsops->fs_journal_data(file);
412 static inline int mds_fs_statfs(struct mds_obd *mds, struct statfs *sfs)
414 if (mds->mds_fsops->fs_statfs)
415 return mds->mds_fsops->fs_statfs(mds->mds_sb, sfs);
417 return vfs_statfs(mds->mds_sb, sfs);
419 #endif /* __KERNEL */