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 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
29 #include <asm/statfs.h>
31 #include <lprocfs_status.h>
32 #include <obd_class.h>
33 #include <linux/seq_file.h>
34 #include "lov_internal.h"
37 static int lov_rd_stripesize(char *page, char **start, off_t off, int count,
40 struct obd_device *dev = (struct obd_device *)data;
41 struct lov_desc *desc;
44 desc = &dev->u.lov.desc;
46 return snprintf(page, count, LPU64"\n", desc->ld_default_stripe_size);
49 static int lov_wr_stripesize(struct file *file, const char *buffer,
50 unsigned long count, void *data)
52 struct obd_device *dev = (struct obd_device *)data;
53 struct lov_desc *desc;
58 desc = &dev->u.lov.desc;
59 rc = lprocfs_write_u64_helper(buffer, count, &val);
63 desc->ld_default_stripe_size = val;
68 static int lov_rd_stripeoffset(char *page, char **start, off_t off, int count,
71 struct obd_device *dev = (struct obd_device *)data;
72 struct lov_desc *desc;
75 desc = &dev->u.lov.desc;
77 return snprintf(page, count, LPU64"\n", desc->ld_default_stripe_offset);
80 static int lov_wr_stripeoffset(struct file *file, const char *buffer,
81 unsigned long count, void *data)
83 struct obd_device *dev = (struct obd_device *)data;
84 struct lov_desc *desc;
89 desc = &dev->u.lov.desc;
90 rc = lprocfs_write_u64_helper(buffer, count, &val);
94 desc->ld_default_stripe_offset = val;
99 static int lov_rd_stripetype(char *page, char **start, off_t off, int count,
100 int *eof, void *data)
102 struct obd_device* dev = (struct obd_device*)data;
103 struct lov_desc *desc;
105 LASSERT(dev != NULL);
106 desc = &dev->u.lov.desc;
108 return snprintf(page, count, "%u\n", desc->ld_pattern);
111 static int lov_wr_stripetype(struct file *file, const char *buffer,
112 unsigned long count, void *data)
114 struct obd_device *dev = (struct obd_device *)data;
115 struct lov_desc *desc;
118 LASSERT(dev != NULL);
119 desc = &dev->u.lov.desc;
120 rc = lprocfs_write_helper(buffer, count, &val);
124 desc->ld_pattern = val;
129 static int lov_rd_stripecount(char *page, char **start, off_t off, int count,
130 int *eof, void *data)
132 struct obd_device *dev = (struct obd_device *)data;
133 struct lov_desc *desc;
135 LASSERT(dev != NULL);
136 desc = &dev->u.lov.desc;
138 return snprintf(page, count, "%ld\n",
139 (long)(desc->ld_default_stripe_count + 1) - 1);
142 static int lov_wr_stripecount(struct file *file, const char *buffer,
143 unsigned long count, void *data)
145 struct obd_device *dev = (struct obd_device *)data;
146 struct lov_desc *desc;
149 LASSERT(dev != NULL);
150 desc = &dev->u.lov.desc;
151 rc = lprocfs_write_helper(buffer, count, &val);
155 desc->ld_default_stripe_count = val;
160 static int lov_rd_numobd(char *page, char **start, off_t off, int count,
161 int *eof, void *data)
163 struct obd_device *dev = (struct obd_device*)data;
164 struct lov_desc *desc;
166 LASSERT(dev != NULL);
167 desc = &dev->u.lov.desc;
169 return snprintf(page, count, "%u\n", desc->ld_tgt_count);
173 static int lov_rd_activeobd(char *page, char **start, off_t off, int count,
174 int *eof, void *data)
176 struct obd_device* dev = (struct obd_device*)data;
177 struct lov_desc *desc;
179 LASSERT(dev != NULL);
180 desc = &dev->u.lov.desc;
182 return snprintf(page, count, "%u\n", desc->ld_active_tgt_count);
185 static int lov_rd_desc_uuid(char *page, char **start, off_t off, int count,
186 int *eof, void *data)
188 struct obd_device *dev = (struct obd_device*) data;
191 LASSERT(dev != NULL);
194 return snprintf(page, count, "%s\n", lov->desc.ld_uuid.uuid);
197 /* free priority (0-255): how badly user wants to choose empty osts */
198 static int lov_rd_qos_priofree(char *page, char **start, off_t off, int count,
199 int *eof, void *data)
201 struct obd_device *dev = (struct obd_device*) data;
204 LASSERT(dev != NULL);
207 return snprintf(page, count, "%d%%\n",
208 (lov->lov_qos.lq_prio_free * 100) >> 8);
211 static int lov_wr_qos_priofree(struct file *file, const char *buffer,
212 unsigned long count, void *data)
214 struct obd_device *dev = (struct obd_device *)data;
217 LASSERT(dev != NULL);
220 rc = lprocfs_write_helper(buffer, count, &val);
226 lov->lov_qos.lq_prio_free = (val << 8) / 100;
227 lov->lov_qos.lq_dirty = 1;
228 lov->lov_qos.lq_reset = 1;
232 static int lov_rd_qos_maxage(char *page, char **start, off_t off, int count,
233 int *eof, void *data)
235 struct obd_device *dev = (struct obd_device*) data;
238 LASSERT(dev != NULL);
241 return snprintf(page, count, "%u Sec\n", lov->desc.ld_qos_maxage);
244 static int lov_wr_qos_maxage(struct file *file, const char *buffer,
245 unsigned long count, void *data)
247 struct obd_device *dev = (struct obd_device *)data;
250 LASSERT(dev != NULL);
253 rc = lprocfs_write_helper(buffer, count, &val);
259 lov->desc.ld_qos_maxage = val;
263 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
265 struct obd_device *dev = p->private;
266 struct lov_obd *lov = &dev->u.lov;
268 while (*pos < lov->desc.ld_tgt_count) {
269 if (lov->lov_tgts[*pos])
270 return lov->lov_tgts[*pos];
276 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
280 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
282 struct obd_device *dev = p->private;
283 struct lov_obd *lov = &dev->u.lov;
285 while (++*pos < lov->desc.ld_tgt_count) {
286 if (lov->lov_tgts[*pos])
287 return lov->lov_tgts[*pos];
292 static int lov_tgt_seq_show(struct seq_file *p, void *v)
294 struct lov_tgt_desc *tgt = v;
295 return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
296 obd_uuid2str(&tgt->ltd_uuid),
297 tgt->ltd_active ? "" : "IN");
300 struct seq_operations lov_tgt_sops = {
301 .start = lov_tgt_seq_start,
302 .stop = lov_tgt_seq_stop,
303 .next = lov_tgt_seq_next,
304 .show = lov_tgt_seq_show,
307 static int lov_target_seq_open(struct inode *inode, struct file *file)
309 struct proc_dir_entry *dp = PDE(inode);
310 struct seq_file *seq;
313 LPROCFS_ENTRY_AND_CHECK(dp);
314 rc = seq_open(file, &lov_tgt_sops);
320 seq = file->private_data;
321 seq->private = dp->data;
325 struct lprocfs_vars lprocfs_lov_obd_vars[] = {
326 { "uuid", lprocfs_rd_uuid, 0, 0 },
327 { "stripesize", lov_rd_stripesize, lov_wr_stripesize, 0 },
328 { "stripeoffset", lov_rd_stripeoffset, lov_wr_stripeoffset, 0 },
329 { "stripecount", lov_rd_stripecount, lov_wr_stripecount, 0 },
330 { "stripetype", lov_rd_stripetype, lov_wr_stripetype, 0 },
331 { "numobd", lov_rd_numobd, 0, 0 },
332 { "activeobd", lov_rd_activeobd, 0, 0 },
333 { "filestotal", lprocfs_rd_filestotal, 0, 0 },
334 { "filesfree", lprocfs_rd_filesfree, 0, 0 },
335 /*{ "filegroups", lprocfs_rd_filegroups, 0, 0 },*/
336 { "blocksize", lprocfs_rd_blksize, 0, 0 },
337 { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 },
338 { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
339 { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 },
340 { "desc_uuid", lov_rd_desc_uuid, 0, 0 },
341 { "qos_prio_free",lov_rd_qos_priofree, lov_wr_qos_priofree, 0 },
342 { "qos_maxage", lov_rd_qos_maxage, lov_wr_qos_maxage, 0 },
346 static struct lprocfs_vars lprocfs_lov_module_vars[] = {
347 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
351 void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars)
353 lvars->module_vars = lprocfs_lov_module_vars;
354 lvars->obd_vars = lprocfs_lov_obd_vars;
357 struct file_operations lov_proc_target_fops = {
358 .owner = THIS_MODULE,
359 .open = lov_target_seq_open,
362 .release = lprocfs_seq_release,