1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
|
/*
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _STRIPE_H_
#define _STRIPE_H_
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "xlator.h"
#include "logging.h"
#include "defaults.h"
#include "common-utils.h"
#include "compat.h"
#include "compat-errno.h"
#include "stripe-mem-types.h"
#include "libxlator.h"
#include <fnmatch.h>
#include <signal.h>
#define STRIPE_PATHINFO_HEADER "STRIPE:"
#define STRIPE_MIN_BLOCK_SIZE (16*GF_UNIT_KB)
#define STRIPE_STACK_UNWIND(fop, frame, params ...) do { \
stripe_local_t *__local = NULL; \
if (frame) { \
__local = frame->local; \
frame->local = NULL; \
} \
STACK_UNWIND_STRICT (fop, frame, params); \
if (__local) { \
stripe_local_wipe(__local); \
mem_put (__local); \
} \
} while (0)
#define STRIPE_STACK_DESTROY(frame) do { \
stripe_local_t *__local = NULL; \
__local = frame->local; \
frame->local = NULL; \
STACK_DESTROY (frame->root); \
if (__local) { \
stripe_local_wipe (__local); \
mem_put (__local); \
} \
} while (0)
#define STRIPE_VALIDATE_FCTX(fctx, label) do { \
int idx = 0; \
if (!fctx) { \
op_errno = EINVAL; \
goto label; \
} \
for (idx = 0; idx < fctx->stripe_count; idx++) { \
if (!fctx->xl_array[idx]) { \
gf_log (this->name, GF_LOG_ERROR, \
"fctx->xl_array[%d] is NULL", \
idx); \
op_errno = ESTALE; \
goto label; \
} \
} \
} while (0)
typedef struct stripe_xattr_sort {
int pos;
int xattr_len;
char *xattr_value;
} stripe_xattr_sort_t;
/**
* struct stripe_options : This keeps the pattern and the block-size
* information, which is used for striping on a file.
*/
struct stripe_options {
struct stripe_options *next;
char path_pattern[256];
uint64_t block_size;
};
/**
* Private structure for stripe translator
*/
struct stripe_private {
struct stripe_options *pattern;
xlator_t **xl_array;
uint64_t block_size;
gf_lock_t lock;
uint8_t nodes_down;
int8_t first_child_down;
int8_t child_count;
int8_t *state; /* Current state of child node */
gf_boolean_t xattr_supported; /* default yes */
gf_boolean_t coalesce;
char vol_uuid[UUID_SIZE + 1];
};
/**
* Used to keep info about the replies received from readv/writev calls
*/
struct stripe_replies {
struct iovec *vector;
int32_t count; //count of vector
int32_t op_ret; //op_ret of readv
int32_t op_errno;
int32_t requested_size;
struct iatt stbuf; /* 'stbuf' is also a part of reply */
};
typedef struct _stripe_fd_ctx {
off_t stripe_size;
int stripe_count;
int stripe_coalesce;
int static_array;
xlator_t **xl_array;
} stripe_fd_ctx_t;
/**
* Local structure to be passed with all the frames in case of STACK_WIND
*/
struct stripe_local; /* this itself is used inside the structure; */
struct stripe_local {
struct stripe_local *next;
call_frame_t *orig_frame;
stripe_fd_ctx_t *fctx;
/* Used by _cbk functions */
struct iatt stbuf;
struct iatt pre_buf;
struct iatt post_buf;
struct iatt preparent;
struct iatt postparent;
off_t stbuf_size;
off_t prebuf_size;
off_t postbuf_size;
off_t preparent_size;
off_t postparent_size;
blkcnt_t stbuf_blocks;
blkcnt_t prebuf_blocks;
blkcnt_t postbuf_blocks;
blkcnt_t preparent_blocks;
blkcnt_t postparent_blocks;
struct stripe_replies *replies;
struct statvfs statvfs_buf;
dir_entry_t *entry;
int8_t revalidate;
int8_t failed;
int8_t unwind;
size_t readv_size;
int32_t entry_count;
int32_t node_index;
int32_t call_count;
int32_t wind_count; /* used instead of child_cound
in case of read and write */
int32_t op_ret;
int32_t op_errno;
int32_t count;
int32_t flags;
char *name;
inode_t *inode;
loc_t loc;
loc_t loc2;
mode_t mode;
dev_t rdev;
/* For File I/O fops */
dict_t *xdata;
stripe_xattr_sort_t *xattr_list;
int32_t xattr_total_len;
int32_t nallocs;
char xsel[256];
struct marker_str marker;
/* General usage */
off_t offset;
off_t stripe_size;
int xattr_self_heal_needed;
int entry_self_heal_needed;
int8_t *list;
struct gf_flock lock;
fd_t *fd;
void *value;
struct iobref *iobref;
gf_dirent_t entries;
gf_dirent_t *dirent;
dict_t *xattr;
uuid_t ia_gfid;
int xflag;
mode_t umask;
};
typedef struct stripe_local stripe_local_t;
typedef struct stripe_private stripe_private_t;
/*
* Determine the stripe index of a particular frame based on the translator.
*/
static inline int32_t stripe_get_frame_index(stripe_fd_ctx_t *fctx,
call_frame_t *prev)
{
int32_t i, idx = -1;
for (i = 0; i < fctx->stripe_count; i++) {
if (fctx->xl_array[i] == prev->this) {
idx = i;
break;
}
}
return idx;
}
static inline void stripe_copy_xl_array(xlator_t **dst, xlator_t **src,
int count)
{
int i;
for (i = 0; i < count; i++)
dst[i] = src[i];
}
void stripe_local_wipe (stripe_local_t *local);
int32_t stripe_ctx_handle (xlator_t *this, call_frame_t *prev,
stripe_local_t *local, dict_t *dict);
void stripe_aggregate_xattr (dict_t *dst, dict_t *src);
int32_t stripe_xattr_request_build (xlator_t *this, dict_t *dict,
uint64_t stripe_size, uint32_t stripe_count,
uint32_t stripe_index,
uint32_t stripe_coalesce);
int32_t stripe_get_matching_bs (const char *path, stripe_private_t *priv);
int set_stripe_block_size (xlator_t *this, stripe_private_t *priv, char *data);
int32_t stripe_iatt_merge (struct iatt *from, struct iatt *to);
int32_t stripe_fill_pathinfo_xattr (xlator_t *this, stripe_local_t *local,
char **xattr_serz);
int32_t stripe_free_xattr_str (stripe_local_t *local);
int32_t stripe_xattr_aggregate (char *buffer, stripe_local_t *local,
int32_t *total);
off_t coalesced_offset(off_t offset, uint64_t stripe_size, int stripe_count);
off_t uncoalesced_size(off_t size, uint64_t stripe_size, int stripe_count,
int stripe_index);
int32_t
stripe_fill_lockinfo_xattr (xlator_t *this, stripe_local_t *local,
void **xattr_serz);
/*
* Adjust the size attribute for files if coalesce is enabled.
*/
static inline void correct_file_size(struct iatt *buf, stripe_fd_ctx_t *fctx,
call_frame_t *prev)
{
int index;
if (!IA_ISREG(buf->ia_type))
return;
if (!fctx || !fctx->stripe_coalesce)
return;
index = stripe_get_frame_index(fctx, prev);
buf->ia_size = uncoalesced_size(buf->ia_size, fctx->stripe_size,
fctx->stripe_count, index);
}
#endif /* _STRIPE_H_ */
|
