1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
32 * Copyright (c) 2011, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
38 * lustre/tests/ll_dirstripe_verify.c
40 * ll_dirstripe_verify <dir> <file>:
41 * - to verify if the file has the same lov_user_md setting as the parent dir.
42 * - if dir's offset is set -1, ll_dirstripe_verify <dir> <file1> <file2>
43 * is used to further verify if file1 and file2's obdidx is continuous.
50 #include <sys/ioctl.h>
56 #include <liblustre.h>
58 #include <lustre_lib.h>
59 #include <lustre/liblustreapi.h>
62 #include <lnet/lnetctl.h>
65 #define MAX_LOV_UUID_COUNT 1000
70 #define lov_uuid lov.uuid
71 #define lov_name lov.name
73 /* Returns bytes read on success and a negative value on failure.
74 * If zero bytes are read it will be treated as failure as such
75 * zero cannot be returned from this function.
77 int read_proc_entry(char *proc_path, char *buf, int len)
83 fd = open(proc_path, O_RDONLY);
85 llapi_error(LLAPI_MSG_ERROR, -errno, "open('%s') failed: %s\n",
90 rc = read(fd, buf, len - 1);
92 llapi_error(LLAPI_MSG_ERROR, -errno,
93 "read('%s') failed: %s\n", proc_path);
96 llapi_err_noerrno(LLAPI_MSG_ERROR,
97 "read('%s') zero bytes\n", proc_path);
99 } else if (/* rc > 0 && */ buf[rc - 1] == '\n') {
100 buf[rc - 1] = '\0'; /* Remove trailing newline */
107 int compare(struct lov_user_md *lum_dir, struct lov_user_md *lum_file1,
108 struct lov_user_md *lum_file2)
110 int stripe_count = 0, min_stripe_count = 0, def_stripe_count = 1;
112 int stripe_offset = -1;
115 char lov_path[PATH_MAX];
116 char tmp_path[PATH_MAX];
120 fp = popen("\\ls -d /proc/fs/lustre/lov/*clilov* | head -1", "r");
122 llapi_error(LLAPI_MSG_ERROR, -errno,
123 "open(lustre/lov/*clilov*) failed: %s\n");
126 if (fscanf(fp, "%s", lov_path) < 1) {
127 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
128 "read(lustre/lov/*clilov*) failed: %s\n");
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_mds_md_size(MAX_LOV_UUID_COUNT, LOV_MAGIC);
251 if ((lum_dir = (struct lov_user_md *)malloc(lum_size)) == NULL) {
253 llapi_error(LLAPI_MSG_ERROR, rc,
254 "error: can't allocate %d bytes "
255 "for dir EA", lum_size);
259 rc = llapi_file_get_stripe(argv[1], lum_dir);
261 if (rc == -ENODATA) {
265 llapi_error(LLAPI_MSG_ERROR, rc,
266 "error: can't get EA for %s\n", argv[1]);
271 /* XXX should be llapi_lov_getname() */
272 rc = llapi_file_get_lov_uuid(argv[1], &lov_uuid);
274 llapi_error(LLAPI_MSG_ERROR, rc,
275 "error: can't get lov name for %s\n",
280 if ((lum_file1 = (struct lov_user_md *)malloc(lum_size)) == NULL) {
282 llapi_error(LLAPI_MSG_ERROR, rc,
283 "error: can't allocate %d bytes for EA\n",
288 rc = llapi_file_get_stripe(argv[2], lum_file1);
290 llapi_error(LLAPI_MSG_ERROR, rc,
291 "error: unable to get EA for %s\n", argv[2]);
296 lum_file2 = (struct lov_user_md *)malloc(lum_size);
297 if (lum_file2 == NULL) {
299 llapi_error(LLAPI_MSG_ERROR, rc,
300 "error: can't allocate %d "
301 "bytes for file2 EA\n", lum_size);
305 rc = llapi_file_get_stripe(argv[3], lum_file2);
307 llapi_error(LLAPI_MSG_ERROR, rc,
308 "error: can't get EA for %s\n", argv[3]);
313 rc = compare(lum_dir, lum_file1, lum_file2);
319 if (lum_file1 != NULL)
321 if (lum_file2 != NULL)