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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/tests/ll_dirstripe_verify.c
34 * ll_dirstripe_verify <dir> <file>:
35 * - to verify if the file has the same lov_user_md setting as the parent dir.
36 * - if dir's offset is set -1, ll_dirstripe_verify <dir> <file1> <file2>
37 * is used to further verify if file1 and file2's obdidx is continuous.
44 #include <sys/ioctl.h>
50 #include <libcfs/util/param.h>
51 #include <libcfs/util/string.h>
52 #include <lustre/lustreapi.h>
53 #include <linux/lustre/lustre_idl.h>
55 #define MAX_LOV_UUID_COUNT 1000
58 * Returns bytes read on success and a negative value on failure.
59 * If zero bytes are read it will be treated as failure as such
60 * zero cannot be returned from this function.
62 int read_proc_entry(char *proc_path, char *buf, int len)
68 fd = open(proc_path, O_RDONLY);
70 llapi_error(LLAPI_MSG_ERROR, -errno, "cannot open '%s'",
75 rc = read(fd, buf, len - 1);
77 llapi_error(LLAPI_MSG_ERROR, -errno,
78 "error reading from '%s'", proc_path);
81 llapi_err_noerrno(LLAPI_MSG_ERROR,
82 "read zero bytes from '%s'", proc_path);
84 } else if (buf[rc - 1] == '\n') {
85 buf[rc - 1] = '\0'; /* Remove trailing newline */
93 int compare(struct obd_uuid *puuid, struct lov_user_md *lum_dir,
94 struct lov_user_md *lum_file1, struct lov_user_md *lum_file2)
96 int stripe_count = 0, min_stripe_count = 0, def_stripe_count = 1;
98 int stripe_offset = -1;
104 if (cfs_get_param_paths(&path, "lov/%s/stripecount", puuid->uuid) != 0)
106 if (read_proc_entry(path.gl_pathv[0], buf, sizeof(buf)) < 0) {
107 cfs_free_param_data(&path);
110 cfs_free_param_data(&path);
111 def_stripe_count = (short)atoi(buf);
113 if (cfs_get_param_paths(&path, "lov/%s/numobd", puuid->uuid) != 0)
115 if (read_proc_entry(path.gl_pathv[0], buf, sizeof(buf)) < 0) {
116 cfs_free_param_data(&path);
119 cfs_free_param_data(&path);
120 ost_count = atoi(buf);
123 stripe_count = def_stripe_count;
124 min_stripe_count = -1;
126 stripe_count = (signed short)lum_dir->lmm_stripe_count;
127 printf("dir stripe %d, ", stripe_count);
128 min_stripe_count = 1;
131 printf("default stripe %d, ost count %d\n",
132 def_stripe_count, ost_count);
134 if (stripe_count == 0) {
135 min_stripe_count = -1;
139 stripe_count = (stripe_count > 0 && stripe_count <= ost_count) ?
140 stripe_count : ost_count;
141 min_stripe_count = min_stripe_count > 0 ? stripe_count :
142 ((stripe_count + 1) / 2);
144 if (lum_file1->lmm_stripe_count != stripe_count ||
145 lum_file1->lmm_stripe_count < min_stripe_count) {
146 llapi_err_noerrno(LLAPI_MSG_ERROR,
147 "file1 stripe count %d != dir %d\n",
148 lum_file1->lmm_stripe_count, stripe_count);
152 if (lum_file1->lmm_stripe_count < stripe_count)
153 llapi_err_noerrno(LLAPI_MSG_WARN,
154 "warning: file1 used fewer stripes %d < dir %d (likely due to bug 4900)\n",
155 lum_file1->lmm_stripe_count, stripe_count);
158 stripe_size = (int)lum_dir->lmm_stripe_size;
159 if (stripe_size == 0) {
160 if (cfs_get_param_paths(&path, "lov/%s/stripesize",
163 if (read_proc_entry(path.gl_pathv[0], buf, sizeof(buf)) < 0) {
164 cfs_free_param_data(&path);
167 cfs_free_param_data(&path);
169 stripe_size = atoi(buf);
172 if (lum_file1->lmm_stripe_size != stripe_size) {
173 llapi_err_noerrno(LLAPI_MSG_ERROR,
174 "file1 stripe size %d != dir %d\n",
175 lum_file1->lmm_stripe_size, stripe_size);
180 stripe_offset = (short int)lum_dir->lmm_stripe_offset;
181 if (stripe_offset != -1) {
182 for (i = 0; i < stripe_count; i++)
183 if (lum_file1->lmm_objects[i].l_ost_idx !=
184 (stripe_offset + i) % ost_count) {
185 llapi_err_noerrno(LLAPI_MSG_WARN,
186 "warning: file1 non-sequential stripe[%d] %d != %d\n",
187 i, lum_file1->lmm_objects[i].l_ost_idx,
188 (stripe_offset + i) %
191 } else if (lum_file2) {
192 int next, idx, stripe = stripe_count - 1;
194 next = (lum_file1->lmm_objects[stripe].l_ost_idx + 1) %
196 idx = lum_file2->lmm_objects[0].l_ost_idx;
198 llapi_err_noerrno(LLAPI_MSG_WARN,
199 "warning: non-sequential file1 stripe[%d] %d != file2 stripe[0] %d\n",
201 lum_file1->lmm_objects[stripe].l_ost_idx,
209 int compare_lum(struct obd_uuid *puuid, struct lov_user_md *lum_dir,
210 struct lov_user_md *lum_file1, struct lov_user_md *lum_file2)
212 struct lov_comp_md_v1 *comp_dir, *comp_file1;
213 struct lov_user_md *sub_dir, *sub_file1;
216 if (!lum_dir || lum_dir->lmm_magic != LOV_MAGIC_COMP_V1)
217 return compare(puuid, lum_dir, lum_file1, lum_file2);
219 comp_dir = (struct lov_comp_md_v1 *)lum_dir;
220 comp_file1 = (struct lov_comp_md_v1 *)lum_file1;
222 if (lum_file1->lmm_magic != lum_dir->lmm_magic) {
223 llapi_err_noerrno(LLAPI_MSG_ERROR, "file1 magic %#x != %#x\n",
224 lum_file1->lmm_magic, lum_dir->lmm_magic);
228 if (comp_file1->lcm_entry_count != comp_dir->lcm_entry_count) {
229 llapi_err_noerrno(LLAPI_MSG_ERROR, "file1 comp cnt %d != %d\n",
230 comp_file1->lcm_entry_count,
231 comp_dir->lcm_entry_count);
235 for (i = 0; i < comp_dir->lcm_entry_count; i++) {
236 sub_dir = (struct lov_user_md *)((char *)comp_dir +
237 comp_dir->lcm_entries[i].lcme_offset);
238 sub_file1 = (struct lov_user_md *)((char *)comp_file1 +
239 comp_file1->lcm_entries[i].lcme_offset);
241 rc = compare(puuid, sub_dir, sub_file1, NULL);
249 int main(int argc, char **argv)
251 struct lov_user_md *lum_dir, *lum_file1 = NULL, *lum_file2 = NULL;
252 struct obd_uuid uuid;
257 llapi_err_noerrno(LLAPI_MSG_ERROR,
258 "Usage: %s <dirname> <filename1> [filename2]\n",
263 dir = opendir(argv[1]);
266 llapi_error(LLAPI_MSG_ERROR, rc,
267 "error: %s opendir failed", argv[1]);
271 lum_size = lov_user_md_size(MAX_LOV_UUID_COUNT, LOV_USER_MAGIC);
272 lum_dir = (struct lov_user_md *)malloc(lum_size);
275 llapi_error(LLAPI_MSG_ERROR, rc,
276 "error: can't allocate %d bytes for dir EA",
281 rc = llapi_file_get_stripe(argv[1], lum_dir);
282 if (rc == -ENODATA) {
283 char root[PATH_MAX], path[PATH_MAX + 2];
285 rc = llapi_search_mounts(argv[1], 0, root, NULL);
287 llapi_error(LLAPI_MSG_ERROR, rc,
288 "error: can't get root path for %s\n",
293 snprintf(path, sizeof(path), "%s/.", root);
294 rc = llapi_file_get_stripe(path, lum_dir);
295 if (rc == -ENODATA) {
299 llapi_error(LLAPI_MSG_ERROR, rc,
300 "error: cant't get root's LOVEA for %s\n",
305 llapi_error(LLAPI_MSG_ERROR, rc,
306 "error: can't get LOVEA for %s", argv[1]);
310 /* XXX should be llapi_lov_getname() */
311 rc = llapi_file_get_lov_uuid(argv[1], &uuid);
313 llapi_error(LLAPI_MSG_ERROR, rc,
314 "error: can't get lov name for %s",
319 lum_file1 = malloc(lum_size);
322 llapi_error(LLAPI_MSG_ERROR, rc,
323 "error: can't allocate %d bytes for EA",
328 rc = llapi_file_get_stripe(argv[2], lum_file1);
330 llapi_error(LLAPI_MSG_ERROR, rc,
331 "error: unable to get EA for %s", argv[2]);
336 lum_file2 = (struct lov_user_md *)malloc(lum_size);
339 llapi_error(LLAPI_MSG_ERROR, rc,
340 "error: can't allocate %d bytes for file2 EA",
345 rc = llapi_file_get_stripe(argv[3], lum_file2);
347 llapi_error(LLAPI_MSG_ERROR, rc,
348 "error: can't get EA for %s", argv[3]);
353 rc = compare_lum(&uuid, lum_dir, lum_file1, lum_file2);