4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
47 #include <sys/types.h>
50 #include <liblustre.h>
55 #define LPDS sizeof(__u64)
56 int block_debug_setup(void *addr, int len, __u64 off, __u64 id)
58 off = cpu_to_le64(off);
60 memcpy(addr, (char *)&off, LPDS);
61 memcpy(addr + LPDS, (char *)&id, LPDS);
63 addr += len - LPDS - LPDS;
64 memcpy(addr, (char *)&off, LPDS);
65 memcpy(addr + LPDS, (char *)&id, LPDS);
70 int block_debug_check(char *who, void *addr, int size, __u64 off, __u64 id)
75 ne_off = le64_to_cpu(off);
77 if (memcmp(addr, (char *)&ne_off, LPDS)) {
78 CERROR("%s: for offset "LPU64" off: "LPX64" != "LPX64"\n",
79 who, off, *(__u64 *)addr, ne_off);
82 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
83 CERROR("%s: for offset "LPU64" id: "LPX64" != "LPX64"\n",
84 who, off, *(__u64 *)(addr + LPDS), id);
88 addr += size - LPDS - LPDS;
89 if (memcmp(addr, (char *)&ne_off, LPDS)) {
90 CERROR("%s: for offset "LPU64" end off: "LPX64" != "LPX64"\n",
91 who, off, *(__u64 *)addr, ne_off);
94 if (memcmp(addr + LPDS, (char *)&id, LPDS)) {
95 CERROR("%s: for offset "LPU64" end id: "LPX64" != "LPX64"\n",
96 who, off, *(__u64 *)(addr + LPDS), id);
104 void usage(char *prog)
107 "usage: %s file count [[d]{r|w|rw} [pages_per_vec [objid]]]\n",
112 int main(int argc, char **argv)
116 long long count, last, offset;
125 if (argc < 3 || argc > 6)
128 count = strtoull(argv[2], &end, 0);
130 fprintf(stderr, "%s: invalid count '%s'\n", argv[0], argv[2]);
134 if (strchr(argv[3], 'r')) {
138 if (strchr(argv[3], 'w')) {
140 flags = O_RDWR | O_CREAT;
142 if (strchr(argv[3], 'd')) {
147 "%s: O_DIRECT not supported in this build\n",
156 flags = O_RDWR | O_CREAT;
160 fprintf(stderr, "%s: warning: not setting O_DIRECT\n",
166 pg_vec = strtoul(argv[4], &end, 0);
168 fprintf(stderr, "%s: invalid pages_per_vec '%s'\n",
177 objid = strtoull(argv[5], &end, 0);
179 fprintf(stderr, "%s: invalid objid '%s'\n",
187 printf("%s: %s on %s(objid "LPX64") for %llux%ld pages \n",
190 flags & O_DIRECT ? "directio" : "i/o",
194 argv[1], objid, count, pg_vec);
196 fd = open(argv[1], flags | O_LARGEFILE);
198 fprintf(stderr, "%s: cannot open %s: %s\n", argv[0],
199 argv[1], strerror(errno));
205 fprintf(stderr, "%s: cannot stat %s: %s\n", argv[0],
206 argv[1], strerror(errno));
210 len = pg_vec * st.st_blksize;
211 last = (long long)count * len;
213 buf = mmap(0, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0);
214 if (buf == MAP_FAILED) {
215 fprintf(stderr, "%s: no buffer memory %s\n",
216 argv[0], strerror(errno));
220 for (offset = 0; offset < last && cmd & WRITE; offset += len) {
223 for (i = 0; i < len; i += st.st_blksize)
224 block_debug_setup(buf + i, st.st_blksize,
227 rc = write(fd, buf, len);
229 for (i = 0; i < len; i += st.st_blksize) {
230 if (block_debug_check("write", buf + i, st.st_blksize,
236 fprintf(stderr, "%s: write error: %s, rc %d != %ld\n",
237 argv[0], strerror(errno), rc, len);
242 if (lseek(fd, 0, SEEK_SET) != 0) {
243 fprintf(stderr, "%s: cannot seek %s\n",
244 argv[0], strerror(errno));
248 for (offset = 0; offset < last && cmd & READ; offset += len) {
251 rc = read(fd, buf, len);
253 fprintf(stderr, "%s: read error: %s, rc %d != %ld\n",
254 argv[0], strerror(errno), rc, len);
258 for (i = 0; i < len; i += st.st_blksize) {
259 if (block_debug_check("read", buf + i, st.st_blksize,