1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
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.
9 *
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).
15 *
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
19 *
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
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 */
36 #define DEBUG_SUBSYSTEM S_CLASS
37
38 #include <linux/statfs.h>
39 #include "../include/lprocfs_status.h"
40 #include "../include/obd_class.h"
41 #include <linux/seq_file.h>
42 #include "lov_internal.h"
43
lov_stripesize_seq_show(struct seq_file * m,void * v)44 static int lov_stripesize_seq_show(struct seq_file *m, void *v)
45 {
46 struct obd_device *dev = (struct obd_device *)m->private;
47 struct lov_desc *desc;
48
49 LASSERT(dev != NULL);
50 desc = &dev->u.lov.desc;
51 seq_printf(m, "%llu\n", desc->ld_default_stripe_size);
52 return 0;
53 }
54
lov_stripesize_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)55 static ssize_t lov_stripesize_seq_write(struct file *file,
56 const char __user *buffer,
57 size_t count, loff_t *off)
58 {
59 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
60 struct lov_desc *desc;
61 __u64 val;
62 int rc;
63
64 LASSERT(dev != NULL);
65 desc = &dev->u.lov.desc;
66 rc = lprocfs_write_u64_helper(buffer, count, &val);
67 if (rc)
68 return rc;
69
70 lov_fix_desc_stripe_size(&val);
71 desc->ld_default_stripe_size = val;
72 return count;
73 }
74 LPROC_SEQ_FOPS(lov_stripesize);
75
lov_stripeoffset_seq_show(struct seq_file * m,void * v)76 static int lov_stripeoffset_seq_show(struct seq_file *m, void *v)
77 {
78 struct obd_device *dev = (struct obd_device *)m->private;
79 struct lov_desc *desc;
80
81 LASSERT(dev != NULL);
82 desc = &dev->u.lov.desc;
83 seq_printf(m, "%llu\n", desc->ld_default_stripe_offset);
84 return 0;
85 }
86
lov_stripeoffset_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)87 static ssize_t lov_stripeoffset_seq_write(struct file *file,
88 const char __user *buffer,
89 size_t count, loff_t *off)
90 {
91 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
92 struct lov_desc *desc;
93 __u64 val;
94 int rc;
95
96 LASSERT(dev != NULL);
97 desc = &dev->u.lov.desc;
98 rc = lprocfs_write_u64_helper(buffer, count, &val);
99 if (rc)
100 return rc;
101
102 desc->ld_default_stripe_offset = val;
103 return count;
104 }
105 LPROC_SEQ_FOPS(lov_stripeoffset);
106
lov_stripetype_seq_show(struct seq_file * m,void * v)107 static int lov_stripetype_seq_show(struct seq_file *m, void *v)
108 {
109 struct obd_device *dev = (struct obd_device *)m->private;
110 struct lov_desc *desc;
111
112 LASSERT(dev != NULL);
113 desc = &dev->u.lov.desc;
114 seq_printf(m, "%u\n", desc->ld_pattern);
115 return 0;
116 }
117
lov_stripetype_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)118 static ssize_t lov_stripetype_seq_write(struct file *file,
119 const char __user *buffer,
120 size_t count, loff_t *off)
121 {
122 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
123 struct lov_desc *desc;
124 int val, rc;
125
126 LASSERT(dev != NULL);
127 desc = &dev->u.lov.desc;
128 rc = lprocfs_write_helper(buffer, count, &val);
129 if (rc)
130 return rc;
131
132 lov_fix_desc_pattern(&val);
133 desc->ld_pattern = val;
134 return count;
135 }
136 LPROC_SEQ_FOPS(lov_stripetype);
137
lov_stripecount_seq_show(struct seq_file * m,void * v)138 static int lov_stripecount_seq_show(struct seq_file *m, void *v)
139 {
140 struct obd_device *dev = (struct obd_device *)m->private;
141 struct lov_desc *desc;
142
143 LASSERT(dev != NULL);
144 desc = &dev->u.lov.desc;
145 seq_printf(m, "%d\n", (__s16)(desc->ld_default_stripe_count + 1) - 1);
146 return 0;
147 }
148
lov_stripecount_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)149 static ssize_t lov_stripecount_seq_write(struct file *file,
150 const char __user *buffer,
151 size_t count, loff_t *off)
152 {
153 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
154 struct lov_desc *desc;
155 int val, rc;
156
157 LASSERT(dev != NULL);
158 desc = &dev->u.lov.desc;
159 rc = lprocfs_write_helper(buffer, count, &val);
160 if (rc)
161 return rc;
162
163 lov_fix_desc_stripe_count(&val);
164 desc->ld_default_stripe_count = val;
165 return count;
166 }
167 LPROC_SEQ_FOPS(lov_stripecount);
168
lov_numobd_seq_show(struct seq_file * m,void * v)169 static int lov_numobd_seq_show(struct seq_file *m, void *v)
170 {
171 struct obd_device *dev = (struct obd_device *)m->private;
172 struct lov_desc *desc;
173
174 LASSERT(dev != NULL);
175 desc = &dev->u.lov.desc;
176 seq_printf(m, "%u\n", desc->ld_tgt_count);
177 return 0;
178 }
179 LPROC_SEQ_FOPS_RO(lov_numobd);
180
lov_activeobd_seq_show(struct seq_file * m,void * v)181 static int lov_activeobd_seq_show(struct seq_file *m, void *v)
182 {
183 struct obd_device *dev = (struct obd_device *)m->private;
184 struct lov_desc *desc;
185
186 LASSERT(dev != NULL);
187 desc = &dev->u.lov.desc;
188 seq_printf(m, "%u\n", desc->ld_active_tgt_count);
189 return 0;
190 }
191 LPROC_SEQ_FOPS_RO(lov_activeobd);
192
lov_desc_uuid_seq_show(struct seq_file * m,void * v)193 static int lov_desc_uuid_seq_show(struct seq_file *m, void *v)
194 {
195 struct obd_device *dev = (struct obd_device *)m->private;
196 struct lov_obd *lov;
197
198 LASSERT(dev != NULL);
199 lov = &dev->u.lov;
200 seq_printf(m, "%s\n", lov->desc.ld_uuid.uuid);
201 return 0;
202 }
203 LPROC_SEQ_FOPS_RO(lov_desc_uuid);
204
lov_tgt_seq_start(struct seq_file * p,loff_t * pos)205 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
206 {
207 struct obd_device *dev = p->private;
208 struct lov_obd *lov = &dev->u.lov;
209
210 while (*pos < lov->desc.ld_tgt_count) {
211 if (lov->lov_tgts[*pos])
212 return lov->lov_tgts[*pos];
213 ++*pos;
214 }
215 return NULL;
216 }
217
lov_tgt_seq_stop(struct seq_file * p,void * v)218 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
219 {
220 }
221
lov_tgt_seq_next(struct seq_file * p,void * v,loff_t * pos)222 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
223 {
224 struct obd_device *dev = p->private;
225 struct lov_obd *lov = &dev->u.lov;
226
227 while (++*pos < lov->desc.ld_tgt_count) {
228 if (lov->lov_tgts[*pos])
229 return lov->lov_tgts[*pos];
230 }
231 return NULL;
232 }
233
lov_tgt_seq_show(struct seq_file * p,void * v)234 static int lov_tgt_seq_show(struct seq_file *p, void *v)
235 {
236 struct lov_tgt_desc *tgt = v;
237
238 seq_printf(p, "%d: %s %sACTIVE\n",
239 tgt->ltd_index, obd_uuid2str(&tgt->ltd_uuid),
240 tgt->ltd_active ? "" : "IN");
241 return 0;
242 }
243
244 static const struct seq_operations lov_tgt_sops = {
245 .start = lov_tgt_seq_start,
246 .stop = lov_tgt_seq_stop,
247 .next = lov_tgt_seq_next,
248 .show = lov_tgt_seq_show,
249 };
250
lov_target_seq_open(struct inode * inode,struct file * file)251 static int lov_target_seq_open(struct inode *inode, struct file *file)
252 {
253 struct seq_file *seq;
254 int rc;
255
256 rc = seq_open(file, &lov_tgt_sops);
257 if (rc)
258 return rc;
259
260 seq = file->private_data;
261 seq->private = PDE_DATA(inode);
262 return 0;
263 }
264
265 LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
266 LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
267 LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
268 LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
269 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
270 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
271 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
272
273 static struct lprocfs_vars lprocfs_lov_obd_vars[] = {
274 { "uuid", &lov_uuid_fops, NULL, 0 },
275 { "stripesize", &lov_stripesize_fops, NULL },
276 { "stripeoffset", &lov_stripeoffset_fops, NULL },
277 { "stripecount", &lov_stripecount_fops, NULL },
278 { "stripetype", &lov_stripetype_fops, NULL },
279 { "numobd", &lov_numobd_fops, NULL, 0 },
280 { "activeobd", &lov_activeobd_fops, NULL, 0 },
281 { "filestotal", &lov_filestotal_fops, NULL, 0 },
282 { "filesfree", &lov_filesfree_fops, NULL, 0 },
283 /*{ "filegroups", lprocfs_rd_filegroups, NULL, 0 },*/
284 { "blocksize", &lov_blksize_fops, NULL, 0 },
285 { "kbytestotal", &lov_kbytestotal_fops, NULL, 0 },
286 { "kbytesfree", &lov_kbytesfree_fops, NULL, 0 },
287 { "kbytesavail", &lov_kbytesavail_fops, NULL, 0 },
288 { "desc_uuid", &lov_desc_uuid_fops, NULL, 0 },
289 { NULL }
290 };
291
292 LPROC_SEQ_FOPS_RO_TYPE(lov, numrefs);
293
294 static struct lprocfs_vars lprocfs_lov_module_vars[] = {
295 { "num_refs", &lov_numrefs_fops, NULL, 0 },
296 { NULL }
297 };
298
lprocfs_lov_init_vars(struct lprocfs_static_vars * lvars)299 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
300 {
301 lvars->module_vars = lprocfs_lov_module_vars;
302 lvars->obd_vars = lprocfs_lov_obd_vars;
303 }
304
305 const struct file_operations lov_proc_target_fops = {
306 .owner = THIS_MODULE,
307 .open = lov_target_seq_open,
308 .read = seq_read,
309 .llseek = seq_lseek,
310 .release = lprocfs_seq_release,
311 };
312