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>
59 #include <lnet/lnetctl.h>
62 #define MAX_LOV_UUID_COUNT 1000
67 #define lov_uuid lov.uuid
68 #define lov_name lov.name
70 /* Returns bytes read on success and a negative value on failure.
71 * If zero bytes are read it will be treated as failure as such
72 * zero cannot be returned from this function.
74 int read_proc_entry(char *proc_path, char *buf, int len)
80 fd = open(proc_path, O_RDONLY);
82 llapi_error(LLAPI_MSG_ERROR, -errno, "cannot open '%s'",
87 rc = read(fd, buf, len - 1);
89 llapi_error(LLAPI_MSG_ERROR, -errno,
90 "error reading from '%s'", proc_path);
93 llapi_err_noerrno(LLAPI_MSG_ERROR,
94 "read zero bytes from '%s'", proc_path);
96 } else if (buf[rc - 1] == '\n') {
97 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");
125 if (fscanf(fp, "%s", lov_path) < 1) {
126 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
127 "read(lustre/lov/*clilov*) failed");
134 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/stripecount",
136 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
138 def_stripe_count = (short)atoi(buf);
140 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/numobd", lov_path);
141 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
143 ost_count = atoi(buf);
145 if (lum_dir == NULL) {
146 stripe_count = def_stripe_count;
147 min_stripe_count = -1;
149 stripe_count = (signed short)lum_dir->lmm_stripe_count;
150 printf("dir stripe %d, ", stripe_count);
151 min_stripe_count = 1;
154 printf("default stripe %d, ost count %d\n",
155 def_stripe_count, ost_count);
157 if (stripe_count == 0) {
158 min_stripe_count = -1;
162 stripe_count = (stripe_count > 0 && stripe_count <= ost_count) ?
163 stripe_count : ost_count;
164 min_stripe_count = min_stripe_count > 0 ? stripe_count :
165 ((stripe_count + 1) / 2);
167 if (lum_file1->lmm_stripe_count != stripe_count ||
168 lum_file1->lmm_stripe_count < min_stripe_count) {
169 llapi_err_noerrno(LLAPI_MSG_ERROR,
170 "file1 stripe count %d != dir %d\n",
171 lum_file1->lmm_stripe_count, stripe_count);
175 if (lum_file1->lmm_stripe_count < stripe_count)
176 llapi_err_noerrno(LLAPI_MSG_WARN,
177 "warning: file1 used fewer stripes"
178 " %d < dir %d (likely due to bug 4900)\n",
179 lum_file1->lmm_stripe_count, stripe_count);
182 stripe_size = (int)lum_dir->lmm_stripe_size;
183 if (stripe_size == 0) {
184 snprintf(tmp_path, sizeof(tmp_path) - 1, "%s/stripesize",
186 if (read_proc_entry(tmp_path, buf, sizeof(buf)) < 0)
189 stripe_size = atoi(buf);
192 if (lum_file1->lmm_stripe_size != stripe_size) {
193 llapi_err_noerrno(LLAPI_MSG_ERROR,
194 "file1 stripe size %d != dir %d\n",
195 lum_file1->lmm_stripe_size, stripe_size);
200 stripe_offset = (short int)lum_dir->lmm_stripe_offset;
201 if (stripe_offset != -1) {
202 for (i = 0; i < stripe_count; i++)
203 if (lum_file1->lmm_objects[i].l_ost_idx !=
204 (stripe_offset + i) % ost_count) {
205 llapi_err_noerrno(LLAPI_MSG_WARN,
206 "warning: file1 non-sequential "
207 "stripe[%d] %d != %d\n", i,
208 lum_file1->lmm_objects[i].l_ost_idx,
209 (stripe_offset + i) % ost_count);
211 } else if (lum_file2 != NULL) {
212 int next, idx, stripe = stripe_count - 1;
213 next = (lum_file1->lmm_objects[stripe].l_ost_idx + 1) %
215 idx = lum_file2->lmm_objects[0].l_ost_idx;
217 llapi_err_noerrno(LLAPI_MSG_WARN,
218 "warning: non-sequential "
219 "file1 stripe[%d] %d != file2 stripe[0] %d\n",
220 stripe, lum_file1->lmm_objects[stripe].l_ost_idx,
228 int main(int argc, char **argv)
231 struct lov_user_md *lum_dir, *lum_file1 = NULL, *lum_file2 = NULL;
236 llapi_err_noerrno(LLAPI_MSG_ERROR,
237 "Usage: %s <dirname> <filename1> [filename2]\n",
242 dir = opendir(argv[1]);
245 llapi_error(LLAPI_MSG_ERROR, rc,
246 "error: %s opendir failed\n", argv[1]);
250 lum_size = lov_user_md_size(MAX_LOV_UUID_COUNT, LOV_USER_MAGIC);
251 lum_dir = (struct lov_user_md *)malloc(lum_size);
252 if (lum_dir == NULL) {
254 llapi_error(LLAPI_MSG_ERROR, rc,
255 "error: can't allocate %d bytes "
256 "for dir EA", lum_size);
260 rc = llapi_file_get_stripe(argv[1], lum_dir);
262 if (rc == -ENODATA) {
266 llapi_error(LLAPI_MSG_ERROR, rc,
267 "error: can't get EA for %s\n", argv[1]);
272 /* XXX should be llapi_lov_getname() */
273 rc = llapi_file_get_lov_uuid(argv[1], &lov_uuid);
275 llapi_error(LLAPI_MSG_ERROR, rc,
276 "error: can't get lov name for %s\n",
281 if ((lum_file1 = (struct lov_user_md *)malloc(lum_size)) == NULL) {
283 llapi_error(LLAPI_MSG_ERROR, rc,
284 "error: can't allocate %d bytes for EA\n",
289 rc = llapi_file_get_stripe(argv[2], lum_file1);
291 llapi_error(LLAPI_MSG_ERROR, rc,
292 "error: unable to get EA for %s\n", argv[2]);
297 lum_file2 = (struct lov_user_md *)malloc(lum_size);
298 if (lum_file2 == NULL) {
300 llapi_error(LLAPI_MSG_ERROR, rc,
301 "error: can't allocate %d "
302 "bytes for file2 EA\n", lum_size);
306 rc = llapi_file_get_stripe(argv[3], lum_file2);
308 llapi_error(LLAPI_MSG_ERROR, rc,
309 "error: can't get EA for %s\n", argv[3]);
314 rc = compare(lum_dir, lum_file1, lum_file2);
320 if (lum_file1 != NULL)
322 if (lum_file2 != NULL)