darshan-lustre-logutils.c 7.44 KB
Newer Older
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
/*
 * Copyright (C) 2015 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
 */

#define _GNU_SOURCE
#include "darshan-util-config.h"
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "darshan-logutils.h"

/* counter name strings for the LUSTRE module */
#define X(a) #a,
char *lustre_counter_names[] = {
    LUSTRE_COUNTERS
};
#undef X

static int darshan_log_get_lustre_record(darshan_fd fd, void* lustre_buf,
    darshan_record_id* rec_id);
static int darshan_log_put_lustre_record(darshan_fd fd, void* lustre_buf, int ver);
static void darshan_log_print_lustre_record(void *file_rec,
    char *file_name, char *mnt_pt, char *fs_type, int ver);
static void darshan_log_print_lustre_description(void);
static void darshan_log_print_lustre_record_diff(void *rec1, char *file_name1,
    void *rec2, char *file_name2);

struct darshan_mod_logutil_funcs lustre_logutils =
{
    .log_get_record = &darshan_log_get_lustre_record,
    .log_put_record = &darshan_log_put_lustre_record,
    .log_print_record = &darshan_log_print_lustre_record,
    .log_print_description = &darshan_log_print_lustre_description,
    .log_print_diff = &darshan_log_print_lustre_record_diff
};

static int darshan_log_get_lustre_record(darshan_fd fd, void* lustre_buf,
    darshan_record_id* rec_id)
{
    struct darshan_lustre_record *rec;
    int i;
    int ret;

52
    /* retrieve the fixed-size portion of the record */
53
54
55
56
57
58
    ret = darshan_log_getmod(fd, DARSHAN_LUSTRE_MOD, lustre_buf,
        sizeof(struct darshan_lustre_record));
    if(ret < 0)
        return(-1);
    else if(ret < sizeof(struct darshan_lustre_record))
        return(0);
59
60
61
62
63

    rec = (struct darshan_lustre_record *)lustre_buf;

    /* swap bytes if necessary */
    if(fd->swap_flag)
64
    {
65
66
67
68
69
        DARSHAN_BSWAP64(&rec->rec_id);
        DARSHAN_BSWAP64(&rec->rank);
        for(i=0; i<LUSTRE_NUM_INDICES; i++)
            DARSHAN_BSWAP64(&rec->counters[i]);
    }
70

71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
    /* now read the rest of the record */
    if ( rec->counters[LUSTRE_STRIPE_WIDTH] > 1 ) {
        ret = darshan_log_getmod(
            fd,
            DARSHAN_LUSTRE_MOD,
            (void*)(&(rec->ost_ids[1])),
            (rec->counters[LUSTRE_STRIPE_WIDTH] - 1)*sizeof(OST_ID)
        );
        if(ret < 0)
            return(-1);
        else if(ret < sizeof(struct darshan_lustre_record))
            return(0);
        /* swap bytes if necessary */
        if ( fd->swap_flag )
            for (i = 1; i < rec->counters[LUSTRE_STRIPE_WIDTH]; i++ )
                DARSHAN_BSWAP64(&(rec->ost_ids[i]));
87
    }
88
89
90

    *rec_id = rec->rec_id;
    return(1);
91
92
93
94
95
96
97
98
}

static int darshan_log_put_lustre_record(darshan_fd fd, void* lustre_buf, int ver)
{
    struct darshan_lustre_record *rec = (struct darshan_lustre_record *)lustre_buf;
    int ret;

    ret = darshan_log_putmod(fd, DARSHAN_LUSTRE_MOD, rec,
99
        LUSTRE_RECORD_SIZE(rec->counters[LUSTRE_STRIPE_WIDTH]), ver);
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
    if(ret < 0)
        return(-1);

    return(0);
}

static void darshan_log_print_lustre_record(void *rec, char *file_name,
    char *mnt_pt, char *fs_type, int ver)
{
    int i;
    struct darshan_lustre_record *lustre_rec =
        (struct darshan_lustre_record *)rec;

    for(i=0; i<LUSTRE_NUM_INDICES; i++)
    {
        DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
            lustre_rec->rank, lustre_rec->rec_id, lustre_counter_names[i],
            lustre_rec->counters[i], file_name, mnt_pt, fs_type);
    }

120
121
122
123
124
125
126
127
128
129
130
131
132
133
    for (i = 0; i < lustre_rec->counters[LUSTRE_STRIPE_WIDTH]; i++ )
    {
        char strbuf[25];
        snprintf( strbuf, 25, "LUSTRE_OST_ID_%d", i );
        DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
            lustre_rec->rank,
            lustre_rec->rec_id,
            strbuf,
            lustre_rec->ost_ids[i],
            file_name,
            mnt_pt,
            fs_type);
    }

134
135
136
137
138
139
140
    return;
}

static void darshan_log_print_lustre_description()
{
    /* TODO: add actual counter descriptions here */
    printf("\n# description of LUSTRE counters:\n");
141
142
143
144
    printf("#   LUSTRE_OSTS: number of OSTs across the entire file system.\n");
    printf("#   LUSTRE_MDTS: number of MDTs across the entire file system.\n");
    printf("#   LUSTRE_STRIPE_SIZE: stripe size for file in bytes.\n");
    printf("#   LUSTRE_STRIPE_WIDTH: number of OSTs over which file is striped.\n");
145
146
    printf("#   LUSTRE_STRIPE_OFFSET: OST ID offset specified when the file was created.\n");
    printf("#   LUSTRE_OST_ID_*: indices of OSTs over which the file is striped.\n");
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

    DARSHAN_PRINT_HEADER();

    return;
}

static void darshan_log_print_lustre_record_diff(void *rec1, char *file_name1,
    void *rec2, char *file_name2)
{
    struct darshan_lustre_record *lustre_rec1 = (struct darshan_lustre_record *)rec1;
    struct darshan_lustre_record *lustre_rec2 = (struct darshan_lustre_record *)rec2;
    int i;

    /* NOTE: we assume that both input records are the same module format version */

    for(i=0; i<LUSTRE_NUM_INDICES; i++)
    {
        if(!lustre_rec2)
        {
            printf("- ");
            DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
                lustre_rec1->rank, lustre_rec1->rec_id, lustre_counter_names[i],
                lustre_rec1->counters[i], file_name1, "", "");

        }
        else if(!lustre_rec1)
        {
            printf("+ ");
            DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
                lustre_rec2->rank, lustre_rec2->rec_id, lustre_counter_names[i],
                lustre_rec2->counters[i], file_name2, "", "");
        }
        else if(lustre_rec1->counters[i] != lustre_rec2->counters[i])
        {
            printf("- ");
            DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
                lustre_rec1->rank, lustre_rec1->rec_id, lustre_counter_names[i],
                lustre_rec1->counters[i], file_name1, "", "");
            printf("+ ");
            DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
                lustre_rec2->rank, lustre_rec2->rec_id, lustre_counter_names[i],
                lustre_rec2->counters[i], file_name2, "", "");
        }
    }

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
    /* would it be more or less useful to sort the OST IDs before comparing? */
    if ( lustre_rec1->counters[LUSTRE_STRIPE_WIDTH] == lustre_rec2->counters[LUSTRE_STRIPE_WIDTH] ) {
        for (i = 0; i < lustre_rec1->counters[LUSTRE_STRIPE_WIDTH]; i++ )
        {
            if (lustre_rec1->ost_ids[i] != lustre_rec2->ost_ids[i])
            {
                char strbuf[25];
                snprintf( strbuf, 25, "LUSTRE_OST_ID_%d", i );
                printf("- ");
                DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
                    lustre_rec1->rank,
                    lustre_rec1->rec_id,
                    strbuf,
                    lustre_rec1->ost_ids[i],
                    file_name1,
                    "",
                    "");
                printf("+ ");
                DARSHAN_COUNTER_PRINT(darshan_module_names[DARSHAN_LUSTRE_MOD],
                    lustre_rec2->rank,
                    lustre_rec2->rec_id,
                    strbuf,
                    lustre_rec2->ost_ids[i],
                    file_name2,
                    "",
                    "");
            }
        }
    }

222
223
224
225
226
227
228
229
230
231
232
    return;
}

/*
 * Local variables:
 *  c-indent-level: 4
 *  c-basic-offset: 4
 * End:
 *
 * vim: ts=8 sts=4 sw=4 expandtab
 */