1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of the Lustre file system, http://www.lustre.org
7 * Lustre is a trademark of Cluster File Systems, Inc.
9 * You may have signed or agreed to another license before downloading
10 * this software. If so, you are bound by the terms and conditions
11 * of that agreement, and the following does not apply to you. See the
12 * LICENSE file included with this distribution for more information.
14 * If you did not agree to a different license, then this copy of Lustre
15 * is open source software; you can redistribute it and/or modify it
16 * under the terms of version 2 of the GNU General Public License as
17 * published by the Free Software Foundation.
19 * In either case, Lustre is distributed in the hope that it will be
20 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
21 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * license text for more details.
25 #define DEBUG_SUBSYSTEM S_CLASS
27 #include <linux/version.h>
28 #include <asm/statfs.h>
29 #include <lprocfs_status.h>
30 #include <obd_class.h>
31 #include <linux/seq_file.h>
32 #include "lov_internal.h"
35 static int lov_rd_stripesize(char *page, char **start, off_t off, int count,
38 struct obd_device *dev = (struct obd_device *)data;
39 struct lov_desc *desc;
42 desc = &dev->u.lov.desc;
44 return snprintf(page, count, LPU64"\n", desc->ld_default_stripe_size);
47 static int lov_wr_stripesize(struct file *file, const char *buffer,
48 unsigned long count, void *data)
50 struct obd_device *dev = (struct obd_device *)data;
51 struct lov_desc *desc;
56 desc = &dev->u.lov.desc;
57 rc = lprocfs_write_u64_helper(buffer, count, &val);
61 desc->ld_default_stripe_size = val;
66 static int lov_rd_stripeoffset(char *page, char **start, off_t off, int count,
69 struct obd_device *dev = (struct obd_device *)data;
70 struct lov_desc *desc;
73 desc = &dev->u.lov.desc;
75 return snprintf(page, count, LPU64"\n", desc->ld_default_stripe_offset);
78 static int lov_wr_stripeoffset(struct file *file, const char *buffer,
79 unsigned long count, void *data)
81 struct obd_device *dev = (struct obd_device *)data;
82 struct lov_desc *desc;
87 desc = &dev->u.lov.desc;
88 rc = lprocfs_write_u64_helper(buffer, count, &val);
92 desc->ld_default_stripe_offset = val;
97 static int lov_rd_stripetype(char *page, char **start, off_t off, int count,
100 struct obd_device* dev = (struct obd_device*)data;
101 struct lov_desc *desc;
103 LASSERT(dev != NULL);
104 desc = &dev->u.lov.desc;
106 return snprintf(page, count, "%u\n", desc->ld_pattern);
109 static int lov_wr_stripetype(struct file *file, const char *buffer,
110 unsigned long count, void *data)
112 struct obd_device *dev = (struct obd_device *)data;
113 struct lov_desc *desc;
116 LASSERT(dev != NULL);
117 desc = &dev->u.lov.desc;
118 rc = lprocfs_write_helper(buffer, count, &val);
122 desc->ld_pattern = val;
127 static int lov_rd_stripecount(char *page, char **start, off_t off, int count,
128 int *eof, void *data)
130 struct obd_device *dev = (struct obd_device *)data;
131 struct lov_desc *desc;
133 LASSERT(dev != NULL);
134 desc = &dev->u.lov.desc;
136 return snprintf(page, count, "%ld\n",
137 (long)(desc->ld_default_stripe_count + 1) - 1);
140 static int lov_wr_stripecount(struct file *file, const char *buffer,
141 unsigned long count, void *data)
143 struct obd_device *dev = (struct obd_device *)data;
144 struct lov_desc *desc;
147 LASSERT(dev != NULL);
148 desc = &dev->u.lov.desc;
149 rc = lprocfs_write_helper(buffer, count, &val);
153 desc->ld_default_stripe_count = val;
158 static int lov_rd_numobd(char *page, char **start, off_t off, int count,
159 int *eof, void *data)
161 struct obd_device *dev = (struct obd_device*)data;
162 struct lov_desc *desc;
164 LASSERT(dev != NULL);
165 desc = &dev->u.lov.desc;
167 return snprintf(page, count, "%u\n", desc->ld_tgt_count);
171 static int lov_rd_activeobd(char *page, char **start, off_t off, int count,
172 int *eof, void *data)
174 struct obd_device* dev = (struct obd_device*)data;
175 struct lov_desc *desc;
177 LASSERT(dev != NULL);
178 desc = &dev->u.lov.desc;
180 return snprintf(page, count, "%u\n", desc->ld_active_tgt_count);
183 static int lov_rd_desc_uuid(char *page, char **start, off_t off, int count,
184 int *eof, void *data)
186 struct obd_device *dev = (struct obd_device*) data;
189 LASSERT(dev != NULL);
192 return snprintf(page, count, "%s\n", lov->desc.ld_uuid.uuid);
195 /* free priority (0-255): how badly user wants to choose empty osts */
196 static int lov_rd_qos_priofree(char *page, char **start, off_t off, int count,
197 int *eof, void *data)
199 struct obd_device *dev = (struct obd_device*) data;
202 LASSERT(dev != NULL);
205 return snprintf(page, count, "%d%%\n",
206 (lov->lov_qos.lq_prio_free * 100) >> 8);
209 static int lov_wr_qos_priofree(struct file *file, const char *buffer,
210 unsigned long count, void *data)
212 struct obd_device *dev = (struct obd_device *)data;
215 LASSERT(dev != NULL);
218 rc = lprocfs_write_helper(buffer, count, &val);
224 lov->lov_qos.lq_prio_free = (val << 8) / 100;
225 lov->lov_qos.lq_dirty = 1;
226 lov->lov_qos.lq_reset = 1;
230 static int lov_rd_qos_maxage(char *page, char **start, off_t off, int count,
231 int *eof, void *data)
233 struct obd_device *dev = (struct obd_device*) data;
236 LASSERT(dev != NULL);
239 return snprintf(page, count, "%u Sec\n", lov->desc.ld_qos_maxage);
242 static int lov_wr_qos_maxage(struct file *file, const char *buffer,
243 unsigned long count, void *data)
245 struct obd_device *dev = (struct obd_device *)data;
248 LASSERT(dev != NULL);
251 rc = lprocfs_write_helper(buffer, count, &val);
257 lov->desc.ld_qos_maxage = val;
261 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
263 struct obd_device *dev = p->private;
264 struct lov_obd *lov = &dev->u.lov;
266 while (*pos < lov->desc.ld_tgt_count) {
267 if (lov->lov_tgts[*pos])
268 return lov->lov_tgts[*pos];
274 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
278 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
280 struct obd_device *dev = p->private;
281 struct lov_obd *lov = &dev->u.lov;
283 while (++*pos < lov->desc.ld_tgt_count) {
284 if (lov->lov_tgts[*pos])
285 return lov->lov_tgts[*pos];
290 static int lov_tgt_seq_show(struct seq_file *p, void *v)
292 struct lov_tgt_desc *tgt = v;
293 return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
294 obd_uuid2str(&tgt->ltd_uuid),
295 tgt->ltd_active ? "" : "IN");
298 struct seq_operations lov_tgt_sops = {
299 .start = lov_tgt_seq_start,
300 .stop = lov_tgt_seq_stop,
301 .next = lov_tgt_seq_next,
302 .show = lov_tgt_seq_show,
305 static int lov_target_seq_open(struct inode *inode, struct file *file)
307 struct proc_dir_entry *dp = PDE(inode);
308 struct seq_file *seq;
311 LPROCFS_ENTRY_AND_CHECK(dp);
312 rc = seq_open(file, &lov_tgt_sops);
318 seq = file->private_data;
319 seq->private = dp->data;
323 struct lprocfs_vars lprocfs_lov_obd_vars[] = {
324 { "uuid", lprocfs_rd_uuid, 0, 0 },
325 { "stripesize", lov_rd_stripesize, lov_wr_stripesize, 0 },
326 { "stripeoffset", lov_rd_stripeoffset, lov_wr_stripeoffset, 0 },
327 { "stripecount", lov_rd_stripecount, lov_wr_stripecount, 0 },
328 { "stripetype", lov_rd_stripetype, lov_wr_stripetype, 0 },
329 { "numobd", lov_rd_numobd, 0, 0 },
330 { "activeobd", lov_rd_activeobd, 0, 0 },
331 { "filestotal", lprocfs_rd_filestotal, 0, 0 },
332 { "filesfree", lprocfs_rd_filesfree, 0, 0 },
333 /*{ "filegroups", lprocfs_rd_filegroups, 0, 0 },*/
334 { "blocksize", lprocfs_rd_blksize, 0, 0 },
335 { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 },
336 { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
337 { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 },
338 { "desc_uuid", lov_rd_desc_uuid, 0, 0 },
339 { "qos_prio_free",lov_rd_qos_priofree, lov_wr_qos_priofree, 0 },
340 { "qos_maxage", lov_rd_qos_maxage, lov_wr_qos_maxage, 0 },
344 static struct lprocfs_vars lprocfs_lov_module_vars[] = {
345 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
349 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
351 lvars->module_vars = lprocfs_lov_module_vars;
352 lvars->obd_vars = lprocfs_lov_obd_vars;
355 struct file_operations lov_proc_target_fops = {
356 .owner = THIS_MODULE,
357 .open = lov_target_seq_open,
360 .release = lprocfs_seq_release,