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
|
/*-
* Copyright (c) 2014-2020 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "util.h"
static int copy(WT_SESSION *, const char *, const char *);
static int usage(void);
int
util_backup(WT_SESSION *session, int argc, char *argv[])
{
WT_CURSOR *cursor;
WT_DECL_ITEM(tmp);
WT_DECL_RET;
WT_SESSION_IMPL *session_impl;
int ch;
const char *directory, *name;
bool target;
session_impl = (WT_SESSION_IMPL *)session;
target = false;
while ((ch = __wt_getopt(progname, argc, argv, "t:")) != EOF)
switch (ch) {
case 't':
if (!target) {
WT_ERR(__wt_scr_alloc(session_impl, 0, &tmp));
WT_ERR(__wt_buf_fmt(session_impl, tmp, "%s", "target=("));
}
WT_ERR(__wt_buf_catfmt(session_impl, tmp, "%s\"%s\"", target ? "," : "", __wt_optarg));
target = true;
break;
case '?':
default:
WT_ERR(usage());
}
argc -= __wt_optind;
argv += __wt_optind;
if (argc != 1) {
(void)usage();
goto err;
}
directory = *argv;
/* Terminate any target. */
if (target)
WT_ERR(__wt_buf_catfmt(session_impl, tmp, "%s", ")"));
if ((ret = session->open_cursor(
session, "backup:", NULL, target ? (char *)tmp->data : NULL, &cursor)) != 0) {
fprintf(stderr, "%s: cursor open(backup:) failed: %s\n", progname,
session->strerror(session, ret));
goto err;
}
/* Copy the files. */
while ((ret = cursor->next(cursor)) == 0 && (ret = cursor->get_key(cursor, &name)) == 0)
if ((ret = copy(session, directory, name)) != 0)
goto err;
if (ret == WT_NOTFOUND)
ret = 0;
if (ret != 0) {
fprintf(stderr, "%s: cursor next(backup:) failed: %s\n", progname,
session->strerror(session, ret));
goto err;
}
err:
__wt_scr_free(session_impl, &tmp);
return (ret);
}
static int
copy(WT_SESSION *session, const char *directory, const char *name)
{
WT_DECL_RET;
size_t len;
char *to;
to = NULL;
/* Build the target pathname. */
len = strlen(directory) + strlen(name) + 2;
if ((to = malloc(len)) == NULL) {
fprintf(stderr, "%s: %s\n", progname, strerror(errno));
return (1);
}
if ((ret = __wt_snprintf(to, len, "%s/%s", directory, name)) != 0) {
fprintf(stderr, "%s: %s\n", progname, strerror(ret));
goto err;
}
if (verbose && printf("Backing up %s/%s to %s\n", home, name, to) < 0) {
fprintf(stderr, "%s: %s\n", progname, strerror(EIO));
goto err;
}
/*
* Use WiredTiger to copy the file: ensuring stability of the copied file on disk requires care,
* and WiredTiger knows how to do it.
*/
if ((ret = __wt_copy_and_sync(session, name, to)) != 0)
fprintf(stderr, "%s/%s to %s: backup copy: %s\n", home, name, to,
session->strerror(session, ret));
err:
free(to);
return (ret);
}
static int
usage(void)
{
(void)fprintf(stderr,
"usage: %s %s "
"backup [-t uri] directory\n",
progname, usage_prefix);
return (1);
}
|
