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, Intel Corporation.
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, "cannot open '%s'",
88 rc = read(fd, buf, len - 1);
90 llapi_error(LLAPI_MSG_ERROR, -errno,
91 "error reading from '%s'", proc_path);
94 llapi_err_noerrno(LLAPI_MSG_ERROR,
95 "read zero bytes from '%s'", proc_path);
97 } else if (buf[rc - 1] == '\n') {
98 buf[rc - 1] = '\0'; /* Remove trailing newline */
106 int compare(struct lov_user_md *lum_dir, struct lov_user_md *lum_file1,
107 struct lov_user_md *lum_file2)
109 int stripe_count = 0, min_stripe_count = 0, def_stripe_count = 1;
111 int stripe_offset = -1;
114 char lov_path[PATH_MAX];
115 char tmp_path[PATH_MAX];
119 fp = popen("\\ls -d /proc/fs/lustre/lov/*clilov* | head -1", "r");
121 llapi_error(LLAPI_MSG_ERROR, -errno,
122 "open(lustre/lov/*clilov*) failed");
126 if (fscanf(fp, "%s", lov_path) < 1) {
127 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
128 "read(lustre/lov/*clilov*) failed");
135 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/stripecount",
137 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
139 def_stripe_count = (short)atoi(buf);
141 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/numobd", lov_path);
142 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
144 ost_count = atoi(buf);
146 if (lum_dir == NULL) {
147 stripe_count = def_stripe_count;
148 min_stripe_count = -1;
150 stripe_count = (signed short)lum_dir->lmm_stripe_count;
151 printf("dir stripe %d, ", stripe_count);
152 min_stripe_count = 1;
155 printf("default stripe %d, ost count %d\n",
156 def_stripe_count, ost_count);
158 if (stripe_count == 0) {
159 min_stripe_count = -1;
163 stripe_count = (stripe_count > 0 && stripe_count <= ost_count) ?
164 stripe_count : ost_count;
165 min_stripe_count = min_stripe_count > 0 ? stripe_count :
166 ((stripe_count + 1) / 2);
168 if (lum_file1->lmm_stripe_count != stripe_count ||
169 lum_file1->lmm_stripe_count < min_stripe_count) {
170 llapi_err_noerrno(LLAPI_MSG_ERROR,
171 "file1 stripe count %d != dir %d\n",
172 lum_file1->lmm_stripe_count, stripe_count);
176 if (lum_file1->lmm_stripe_count < stripe_count)
177 llapi_err_noerrno(LLAPI_MSG_WARN,
178 "warning: file1 used fewer stripes"
179 " %d < dir %d (likely due to bug 4900)\n",
180 lum_file1->lmm_stripe_count, stripe_count);
183 stripe_size = (int)lum_dir->lmm_stripe_size;
184 if (stripe_size == 0) {
185 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/stripesize",
187 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
190 stripe_size = atoi(buf);
193 if (lum_file1->lmm_stripe_size != stripe_size) {
194 llapi_err_noerrno(LLAPI_MSG_ERROR,
195 "file1 stripe size %d != dir %d\n",
196 lum_file1->lmm_stripe_size, stripe_size);
201 stripe_offset = (short int)lum_dir->lmm_stripe_offset;
202 if (stripe_offset != -1) {
203 for (i = 0; i < stripe_count; i++)
204 if (lum_file1->lmm_objects[i].l_ost_idx !=
205 (stripe_offset + i) % ost_count) {
206 llapi_err_noerrno(LLAPI_MSG_WARN,
207 "warning: file1 non-sequential "
208 "stripe[%d] %d != %d\n", i,
209 lum_file1->lmm_objects[i].l_ost_idx,
210 (stripe_offset + i) % ost_count);
212 } else if (lum_file2 != NULL) {
213 int next, idx, stripe = stripe_count - 1;
214 next = (lum_file1->lmm_objects[stripe].l_ost_idx + 1) %
216 idx = lum_file2->lmm_objects[0].l_ost_idx;
218 llapi_err_noerrno(LLAPI_MSG_WARN,
219 "warning: non-sequential "
220 "file1 stripe[%d] %d != file2 stripe[0] %d\n",
221 stripe, lum_file1->lmm_objects[stripe].l_ost_idx,
229 int main(int argc, char **argv)
232 struct lov_user_md *lum_dir, *lum_file1 = NULL, *lum_file2 = NULL;
237 llapi_err_noerrno(LLAPI_MSG_ERROR,
238 "Usage: %s <dirname> <filename1> [filename2]\n",
243 dir = opendir(argv[1]);
246 llapi_error(LLAPI_MSG_ERROR, rc,
247 "error: %s opendir failed\n", argv[1]);
251 lum_size = lov_user_md_size(MAX_LOV_UUID_COUNT, LOV_USER_MAGIC);
252 lum_dir = (struct lov_user_md *)malloc(lum_size);
253 if (lum_dir == NULL) {
255 llapi_error(LLAPI_MSG_ERROR, rc,
256 "error: can't allocate %d bytes "
257 "for dir EA", lum_size);
261 rc = llapi_file_get_stripe(argv[1], lum_dir);
263 if (rc == -ENODATA) {
267 llapi_error(LLAPI_MSG_ERROR, rc,
268 "error: can't get EA for %s\n", argv[1]);
273 /* XXX should be llapi_lov_getname() */
274 rc = llapi_file_get_lov_uuid(argv[1], &lov_uuid);
276 llapi_error(LLAPI_MSG_ERROR, rc,
277 "error: can't get lov name for %s\n",
282 if ((lum_file1 = (struct lov_user_md *)malloc(lum_size)) == NULL) {
284 llapi_error(LLAPI_MSG_ERROR, rc,
285 "error: can't allocate %d bytes for EA\n",
290 rc = llapi_file_get_stripe(argv[2], lum_file1);
292 llapi_error(LLAPI_MSG_ERROR, rc,
293 "error: unable to get EA for %s\n", argv[2]);
298 lum_file2 = (struct lov_user_md *)malloc(lum_size);
299 if (lum_file2 == NULL) {
301 llapi_error(LLAPI_MSG_ERROR, rc,
302 "error: can't allocate %d "
303 "bytes for file2 EA\n", lum_size);
307 rc = llapi_file_get_stripe(argv[3], lum_file2);
309 llapi_error(LLAPI_MSG_ERROR, rc,
310 "error: can't get EA for %s\n", argv[3]);
315 rc = compare(lum_dir, lum_file1, lum_file2);
321 if (lum_file1 != NULL)
323 if (lum_file2 != NULL)