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) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/tests/ll_dirstripe_verify.c
38 * ll_dirstripe_verify <dir> <file>:
39 * - to verify if the file has the same lov_user_md setting as the parent dir.
40 * - if dir's offset is set -1, ll_dirstripe_verify <dir> <file1> <file2>
41 * is used to further verify if file1 and file2's obdidx is continuous.
48 #include <sys/ioctl.h>
54 #include <liblustre.h>
56 #include <lustre_lib.h>
57 #include <lustre/lustreapi.h>
60 #include <lnet/lnetctl.h>
63 #define MAX_LOV_UUID_COUNT 1000
68 #define lov_uuid lov.uuid
69 #define lov_name lov.name
71 /* Returns bytes read on success and a negative value on failure.
72 * If zero bytes are read it will be treated as failure as such
73 * zero cannot be returned from this function.
75 int read_proc_entry(char *proc_path, char *buf, int len)
81 fd = open(proc_path, O_RDONLY);
83 llapi_error(LLAPI_MSG_ERROR, -errno, "open('%s') failed: %s\n",
88 rc = read(fd, buf, len - 1);
90 llapi_error(LLAPI_MSG_ERROR, -errno,
91 "read('%s') failed: %s\n", proc_path);
94 llapi_err_noerrno(LLAPI_MSG_ERROR,
95 "read('%s') zero bytes\n", proc_path);
97 } else if (/* rc > 0 && */ buf[rc - 1] == '\n') {
98 buf[rc - 1] = '\0'; /* Remove trailing newline */
105 int compare(struct lov_user_md *lum_dir, struct lov_user_md *lum_file1,
106 struct lov_user_md *lum_file2)
108 int stripe_count = 0, min_stripe_count = 0, def_stripe_count = 1;
110 int stripe_offset = -1;
113 char lov_path[PATH_MAX];
114 char tmp_path[PATH_MAX];
118 fp = popen("\\ls -d /proc/fs/lustre/lov/*clilov* | head -1", "r");
120 llapi_error(LLAPI_MSG_ERROR, -errno,
121 "open(lustre/lov/*clilov*) failed: %s\n");
124 if (fscanf(fp, "%s", lov_path) < 1) {
125 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
126 "read(lustre/lov/*clilov*) failed: %s\n");
132 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/stripecount",
134 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
136 def_stripe_count = (short)atoi(buf);
138 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/numobd", lov_path);
139 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
141 ost_count = atoi(buf);
143 if (lum_dir == NULL) {
144 stripe_count = def_stripe_count;
145 min_stripe_count = -1;
147 stripe_count = (signed short)lum_dir->lmm_stripe_count;
148 printf("dir stripe %d, ", stripe_count);
149 min_stripe_count = 1;
152 printf("default stripe %d, ost count %d\n",
153 def_stripe_count, ost_count);
155 if (stripe_count == 0) {
156 min_stripe_count = -1;
160 stripe_count = (stripe_count > 0 && stripe_count <= ost_count) ?
161 stripe_count : ost_count;
162 min_stripe_count = min_stripe_count > 0 ? stripe_count :
163 ((stripe_count + 1) / 2);
165 if (lum_file1->lmm_stripe_count != stripe_count ||
166 lum_file1->lmm_stripe_count < min_stripe_count) {
167 llapi_err_noerrno(LLAPI_MSG_ERROR,
168 "file1 stripe count %d != dir %d\n",
169 lum_file1->lmm_stripe_count, stripe_count);
173 if (lum_file1->lmm_stripe_count < stripe_count)
174 llapi_err_noerrno(LLAPI_MSG_WARN,
175 "warning: file1 used fewer stripes"
176 " %d < dir %d (likely due to bug 4900)\n",
177 lum_file1->lmm_stripe_count, stripe_count);
180 stripe_size = (int)lum_dir->lmm_stripe_size;
181 if (stripe_size == 0) {
182 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/stripesize",
184 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
187 stripe_size = atoi(buf);
190 if (lum_file1->lmm_stripe_size != stripe_size) {
191 llapi_err_noerrno(LLAPI_MSG_ERROR,
192 "file1 stripe size %d != dir %d\n",
193 lum_file1->lmm_stripe_size, stripe_size);
198 stripe_offset = (short int)lum_dir->lmm_stripe_offset;
199 if (stripe_offset != -1) {
200 for (i = 0; i < stripe_count; i++)
201 if (lum_file1->lmm_objects[i].l_ost_idx !=
202 (stripe_offset + i) % ost_count) {
203 llapi_err_noerrno(LLAPI_MSG_WARN,
204 "warning: file1 non-sequential "
205 "stripe[%d] %d != %d\n", i,
206 lum_file1->lmm_objects[i].l_ost_idx,
207 (stripe_offset + i) % ost_count);
209 } else if (lum_file2 != NULL) {
210 int next, idx, stripe = stripe_count - 1;
211 next = (lum_file1->lmm_objects[stripe].l_ost_idx + 1) %
213 idx = lum_file2->lmm_objects[0].l_ost_idx;
215 llapi_err_noerrno(LLAPI_MSG_WARN,
216 "warning: non-sequential "
217 "file1 stripe[%d] %d != file2 stripe[0] %d\n",
218 stripe, lum_file1->lmm_objects[stripe].l_ost_idx,
226 int main(int argc, char **argv)
229 struct lov_user_md *lum_dir, *lum_file1 = NULL, *lum_file2 = NULL;
234 llapi_err_noerrno(LLAPI_MSG_ERROR,
235 "Usage: %s <dirname> <filename1> [filename2]\n",
240 dir = opendir(argv[1]);
243 llapi_error(LLAPI_MSG_ERROR, rc,
244 "error: %s opendir failed\n", argv[1]);
248 lum_size = lov_mds_md_size(MAX_LOV_UUID_COUNT, LOV_MAGIC);
249 if ((lum_dir = (struct lov_user_md *)malloc(lum_size)) == NULL) {
251 llapi_error(LLAPI_MSG_ERROR, rc,
252 "error: can't allocate %d bytes "
253 "for dir EA", lum_size);
257 rc = llapi_file_get_stripe(argv[1], lum_dir);
259 if (rc == -ENODATA) {
263 llapi_error(LLAPI_MSG_ERROR, rc,
264 "error: can't get EA for %s\n", argv[1]);
269 /* XXX should be llapi_lov_getname() */
270 rc = llapi_file_get_lov_uuid(argv[1], &lov_uuid);
272 llapi_error(LLAPI_MSG_ERROR, rc,
273 "error: can't get lov name for %s\n",
278 if ((lum_file1 = (struct lov_user_md *)malloc(lum_size)) == NULL) {
280 llapi_error(LLAPI_MSG_ERROR, rc,
281 "error: can't allocate %d bytes for EA\n",
286 rc = llapi_file_get_stripe(argv[2], lum_file1);
288 llapi_error(LLAPI_MSG_ERROR, rc,
289 "error: unable to get EA for %s\n", argv[2]);
294 lum_file2 = (struct lov_user_md *)malloc(lum_size);
295 if (lum_file2 == NULL) {
297 llapi_error(LLAPI_MSG_ERROR, rc,
298 "error: can't allocate %d "
299 "bytes for file2 EA\n", lum_size);
303 rc = llapi_file_get_stripe(argv[3], lum_file2);
305 llapi_error(LLAPI_MSG_ERROR, rc,
306 "error: can't get EA for %s\n", argv[3]);
311 rc = compare(lum_dir, lum_file1, lum_file2);
317 if (lum_file1 != NULL)
319 if (lum_file2 != NULL)